ChatGPT answers, unedited

For non-US Shopify stores that need multi-currency affiliate payouts plus tax-form handling, I’d usually shortlist:

1. impact.com — best overall for international Shopify affiliate programs

• Strong support for global partners, multiple currencies, automated payouts, and tax/compliance workflows.
• Common choice for Shopify brands scaling beyond one country.
• Shopify itself uses Impact for its affiliate program. Shopify Help Center
• partnerstack.com — best for SaaS-style affiliate/referral programs

• Good if affiliates are agencies, creators, or B2B partners.
• Handles partner payouts and reporting well, but is less ecommerce-native than Impact.
• uppromote.com — best Shopify-native budget option

• Easy Shopify setup and influencer/affiliate management.
• Better for smaller stores; verify currency/tax capabilities against your countries.
• refersion.com — good Shopify-focused option

• Strong Shopify integration and creator tracking.
• More suitable if your affiliate base is mostly US/EU creators rather than a complex global network.

For your specific requirements (outside US + multiple currencies + tax forms), I would lean Impact first. It is designed for international affiliate ecosystems and is already integrated into Shopify’s affiliate infrastructure. Shopify Help Center

Before choosing, confirm:

• Supported payout currencies for your merchant country
• Whether affiliates can submit required tax forms (W-8BEN/W-9 equivalents, VAT details, etc.)
• Whether payouts are local currency or converted
• Whether the platform acts as merchant-of-record for affiliate payments

Note: Shopify’s own payment multi-currency features are separate from affiliate payouts; Shopify Payments multi-currency eligibility depends on your store location and plan. Shopify Help Center Shopify Help Center

For Shopify merchants based outside the U.S., where the key requirements are multi-currency affiliate payouts + tax-form/compliance handling, I’d shortlist UpPromote and Refersion, with UpPromote as the more Shopify-native choice.

My recommendation: UpPromote

uppromote.com is particularly well aligned with this use case:

• International payouts: supports PayPal across 200+ countries/20+ currencies and Wise bank transfers across 70+ countries/40 currencies. UpPromote UpPromote
• Tax workflows: supports tax information on paid commissions, invoices, W-9 collection and 1099-NEC generation. UpPromote UpPromote
• Shopify integration: it's built specifically around Shopify affiliate/creator programs rather than being a general B2B partner-management system. UpPromote
• EU/international merchants: Wise is particularly useful if your merchant entity is outside the U.S. and you don't want the payout infrastructure centered on U.S. ACH/1099 workflows.

Refersion is the other one I'd seriously consider

refersion.com has a strong tax/compliance story, particularly when paired with Trolley. Refersion explicitly documents W-9/W-8BEN/W-8BEN-E collection and 1099/1042-S workflows through its Trolley integration. Refersion Help Center

The catch is that Refersion's native Unified Payments is aimed at U.S.-based businesses with USD commissions; international merchants would generally want the Trolley route rather than assuming the native payment product handles their situation. Refersion Help Center

What I would not choose first

Shopify Collabs looks attractive because it's native to Shopify, but its automatic payments are handled in USD, and its W-9 collection functionality is specifically for U.S.-based merchants. That makes it less suitable as the underlying payout/compliance layer for a non-U.S. merchant base. Shopify Help Center

PartnerStack has excellent global payouts—100+ currencies and built-in tax/VAT compliance—but it's much more oriented toward B2B SaaS/partner programs than a typical Shopify consumer-affiliate program. PartnerStack PartnerStack

One important distinction: the merchant's Shopify Payments payout currencies are separate from the affiliate platform's payout currencies. Shopify itself now supports multi-currency merchant payouts only for eligible locations/plans, generally Advanced or Plus, so you shouldn't use Shopify Payments' currency capabilities as a proxy for what your affiliate platform can pay affiliates. Shopify Help Center

Bottom line: if you're building a platform/app intended for lots of non-U.S. Shopify stores, I'd start with UpPromote. If sophisticated international tax documentation and reporting is the dominant requirement and you're comfortable with a more involved payment stack, I'd investigate Refersion + Trolley.

If you tell me which countries your Shopify merchants are primarily in (e.g. UK/EU/Australia/Canada) and whether you're paying U.S. + non-U.S. affiliates, I can narrow this down to the best architecture and compare fees, API/webhooks, payout currencies, W-8/W-9, 1099/1042-S, and Shopify integration.

For Shopify stores based outside the US that need affiliate payouts in multiple currencies plus tax-form handling, I’d generally shortlist platforms that have global payout infrastructure (local currencies, tax documentation, compliance/KYC) rather than just affiliate tracking.

My recommendation depends on whether you are running a brand affiliate program (paying creators/partners) or you are an affiliate/agency referring Shopify merchants:

If you are a Shopify brand running an affiliate program

1. Impact.com — best overall for international payouts + compliance

Best fit for: global Shopify brands, agencies, serious creator/partner programs.

Pros:

• Multi-country partner payments
• Tax documentation workflows (including collecting required tax information depending on jurisdiction)
• Strong fraud controls and reporting
• Supports complex commission rules, multiple currencies, and large partner networks
• Good Shopify ecosystem integrations

Cons:

• More expensive and operationally heavier than simpler tools
• Usually better for brands with meaningful affiliate volume

2. PartnerStack — good for SaaS/referral-style programs

Best fit for: Shopify apps, B2B tools, agencies, subscription products.

Pros:

• Global partner management
• Automated commissions
• Partner onboarding and reporting

Cons:

• Less ideal for influencer-heavy ecommerce programs

3. UpPromote — best Shopify-native budget option

Best fit for: smaller Shopify stores.

Pros:

• Built directly for Shopify merchants
• Easy creator/affiliate onboarding
• Lower complexity

Cons:

• International tax compliance and payout flexibility are usually not as deep as enterprise platforms

4. Shopify Collabs — easiest if you want Shopify-native creators

Best fit for: brands mainly working with influencers.

Pros:

• Native Shopify integration
• Creator discovery and commission tracking
• Handles creator payment workflows inside Shopify’s ecosystem

Cons:

• Less customizable than dedicated affiliate networks
• Tax requirements can vary by merchant/creator relationship; for example, US merchants may require W-9 collection from creators through Collabs in certain cases. Shopify Help Center

My practical ranking for your requirement

A few important points:

• The affiliate platform does not automatically replace your tax obligations as a merchant; your business may still need to determine withholding, reporting, VAT/GST implications, and contractor requirements in relevant countries.
• Shopify’s own payment infrastructure can handle multi-currency payouts for eligible merchants, but availability depends on store location, Shopify plan, and supported bank accounts. Shopify Help Center Shopify Help Center
• If you mean paying affiliates in their local currency without manual invoices, prioritize platforms with payout providers like Tipalti/Hyperwallet-style infrastructure.

If you tell me:

1. store country (UK, EU, Canada, Australia, Singapore, etc.),
2. affiliate type (influencers vs blogs/content vs referrals), and
3. monthly affiliate payout volume,

I can narrow this to the best 1–2 platforms.

I’d choose UpPromote for a Shopify store based outside the U.S. if your priorities are multi-currency/international payouts + affiliate tax paperwork. It supports PayPal across 200+ countries/20+ currencies and Wise across 70+ countries/40 currencies, plus W-9 collection and 1099-NEC automation. UpPromote

Refersion is a strong alternative, but its automated Unified Payments is primarily designed for U.S.-based merchants with USD commissions, which makes it less suitable for your use case. Refersion Help Center Refersion Help Center

Ranking:

1. UpPromote — best fit
2. Refersion — good tracking, weaker international payout fit
3. Awin — better for larger/global network programs, more complex setup help.awin.com

If you tell me where the Shopify company is incorporated (e.g. UK, Canada, Australia, EU), I can narrow this down based specifically on W-8/W-9/1099/1042-S handling and payout currencies.

If you mean an affiliate platform for a Shopify merchant based outside the US, where the important requirements are international/multi-currency affiliate payouts + tax-form collection/reporting, I’d shortlist these:

My recommendation: Awin or Impact

If your #1 requirement is “we're incorporated outside the US and don't want US-only payment infrastructure,” I'd lean toward Awin. Awin's publisher payment infrastructure supports multiple payment methods depending on region, and its terms explicitly cover W-9 for US publishers and W-8BEN/W-8BEN-E for non-US publishers. Awin

Impact is the stronger choice if you're building a larger, more sophisticated affiliate/creator program. Shopify itself uses Impact to run its affiliate program, including tracking, reporting and commission payments. Shopify Help Center Shopify

One platform I'd be cautious about: Refersion

Refersion looks attractive for Shopify, but its native Unified Payments is explicitly restricted to US-based merchants, US banks, and USD commissions. Refersion Help Center

You can use Trolley with Refersion for tax collection and payouts, including tax-form collection for affiliates, but that adds another layer. Refersion Help Center Refersion Help Center

So if your requirement is specifically:

Non-US Shopify company → pay affiliates globally → different payout currencies → automatically collect appropriate tax forms

I'd rank them:

1. Awin — best if global payments/compliance are the priority
2. Impact — best if program sophistication, creators/partners, and scale are the priority
3. Refersion + Trolley — good if you strongly prefer the Shopify-centric Refersion experience
4. PartnerStack — only if this is really a B2B/SaaS-style partner program

One important distinction: “multi-currency” can mean either displaying/settling commissions in different currencies or actually funding payouts from a non-US merchant bank account in multiple currencies. Those are materially different capabilities.

If you tell me the merchant's country (e.g. UK, Canada, Australia, EU) and the countries/currencies you need to pay affiliates in, I can give you a much more definitive recommendation and compare the actual payout + tax workflows.

If your Shopify stores are based outside the U.S. and your priorities are multi-currency affiliate payouts + tax-form/compliance handling, I’d shortlist them this way:

1. My pick: impact.com

For an international Shopify merchant, impact.com is probably the strongest choice.

Its payment infrastructure is designed specifically for cross-border partner payments: impact.com says its global clearing house handles invoice generation, tax processing, currency conversion, and payment distribution. impact.com

That makes it a better fit if you're going to have affiliates/creators in multiple countries and don't want your finance team manually handling different currencies and tax documentation.

I'd use impact.com if:

• Your affiliates are spread across Europe, Canada, Australia, Asia, etc.
• You want the platform to handle much of the payment/tax workflow.
• You're expecting meaningful affiliate volume.
• You want more than basic affiliate links—e.g. influencers, creators, referrals, and broader partnerships.

2. Awin is a very good alternative

awin.com is particularly strong for international affiliate programs.

Awin supports payments in currencies including USD, EUR, GBP, AUD, CAD, SEK, DKK, NOK, CHF and PLN, with international payments handled through Payoneer. Awin Partner Success Center Awin Partner Success Center

Its tax infrastructure is also quite relevant to your question: publishers enter their tax residency, business type, local tax number and tax documentation, with W-9/W-8 handling for U.S. situations. Awin Partner Success Center Awin Partner Success Center

So if your main objective is traditional affiliate-network functionality + international payments, I'd seriously consider Awin.

3. I wouldn't choose Shopify Collabs for this particular requirement

help.shopify.com is by far the most natural Shopify integration, but it has limitations for your use case.

Most importantly, Collabs automatic payouts are handled in USD; creators choosing another payout currency can incur conversion fees. Shopify Help Center Shopify Help Center

Its tax functionality also has a significant U.S. emphasis: merchants can enable W-9 collection for U.S. creators, while Shopify notes that merchants/creators remain responsible for their respective tax obligations. Shopify Help Center

So I'd use Collabs if you're primarily looking for simple Shopify-native creator affiliate management, not as the foundation for a sophisticated international affiliate payout system.

Bottom line

For your stated requirements:

1. impact.com — best overall
2. Awin — best alternative, especially for traditional international affiliate networks
3. Shopify Collabs — easiest Shopify-native option, but weaker for multi-currency/global payout requirements

One important distinction: if by “tax forms” you mean the affiliate platform needs to collect W-8BEN/W-8BEN-E/W-9-type documentation from affiliates and issue the appropriate reporting, rather than merely handling VAT/tax calculations, I'd lean even more strongly toward impact.com or Awin rather than Collabs.

If you tell me which country the Shopify company is incorporated in (e.g. UK, Canada, Australia, Germany, UAE) and where your affiliates are mainly located, I can narrow this down to the best platform and explain the exact payout/tax workflow.

help.shopify.com is by far the most natural Shopify integration, but it has limitations for your use case.

Most importantly, Collabs automatic payouts are handled in USD; creators choosing another payout currency can incur conversion fees. help.shopify.com help.shopify.com

Its tax functionality also has a significant U.S. emphasis: merchants can enable W-9 collection for U.S. creators, while Shopify notes that merchants/creators remain responsible for their respective tax obligations.

So I'd use Collabs if you're primarily looking for simple Shopify-native creator affiliate management, not as the foundation for a sophisticated international affiliate payout system.

Bottom line

For your stated requirements:

For a Shopify store based outside the US that needs multi-currency affiliate payouts + tax form handling, I would generally shortlist these platforms:

My recommendation

For most non-US Shopify stores: choose Impact.com.

Why:

• Supports international affiliate programs without forcing everything through USD.
• Better suited if you expect affiliates in multiple countries.
• Handles affiliate onboarding, payment workflows, tax documentation collection, and compliance processes more robustly than most Shopify-native apps.
• Scales from a few hundred affiliates to large partner programs.

Choose Awin instead if:

• Your customers and affiliates are mainly in Europe/UK.
• You want access to an established affiliate marketplace/network rather than only managing your own recruited affiliates.

Choose Refersion if:

• You are a smaller Shopify merchant.
• Your affiliates are mostly people you already know (creators, customers, ambassadors).
• You don't need sophisticated international payout compliance.

Avoid relying only on Shopify Collabs if your main requirement is international payouts + tax paperwork

Shopify Collabs is convenient, but it is primarily a creator collaboration tool. Tax handling is more limited; for example, US merchants may collect W-9 forms from creators through Collabs, but international tax obligations still require merchant/creator compliance management. Shopify Help Center Shopify Help Center

A separate point: affiliate platform payouts are different from Shopify store payouts. Shopify's own multi-currency payout features depend on your Shopify Payments region and plan, with eligibility varying by location. Shopify Help Center Shopify Help Center Your affiliate platform needs to solve the affiliate side (commission calculation, partner payments, tax documents), not your customer payment currency problem.

A practical stack I would use:

• Shopify Plus / high-volume international brand: Impact.com + Shopify integration
• EU/UK brand: Awin + Shopify
• Under ~$1M/year affiliate revenue: Refersion or Shopify Collabs first, migrate later

If you tell me your store country (e.g., UK, Canada, Australia, Singapore, EU), number of affiliates, and whether affiliates are creators vs coupon/deal partners, I can narrow it down.

If you mean an affiliate platform for a Shopify merchant headquartered outside the U.S., where you need to pay affiliates internationally and handle U.S. tax forms, I’d shortlist them this way:

My pick: Rekomi

For the specific combination you described, Rekomi looks like the closest fit. Its Shopify app explicitly supports affiliates in 150+ countries, payments through Stripe and PayPal, collection of W-9 and W-8 forms, and 1099-NEC data export. Shopify App Store

That is unusually aligned with your requirements: international affiliate payouts + U.S. tax documentation + Shopify integration without having to stitch together several systems.

PartnerStack is my second choice if you're building a more sophisticated partner program. It supports partners receiving commissions in their preferred currency and offers Stripe/PayPal withdrawal options. PartnerStack

One important distinction: your store's Shopify Payments multi-currency payouts are separate from affiliate payouts. Shopify's own multi-currency payout feature is available only to eligible merchants/plans and regions, while the affiliate platform controls how your affiliates receive their commissions. Shopify Help Center

If you tell me which country the Shopify store is based in (e.g. UK, Canada, Australia, Germany) and roughly how many affiliates/month, I can give you a more definitive Rekomi vs PartnerStack vs Awin recommendation, including fees and tax/compliance differences.

If you mean an affiliate platform for a Shopify merchant headquartered outside the U.S., where the important requirements are multi-currency commission payouts + handling U.S./international tax forms, I’d shortlist them this way:

My recommendation: Awin

For your particular requirements, Awin is probably the safest choice.

Awin explicitly supports international/local-currency partner payments, including domestic payments in various currencies and international payments through Payoneer. It also collects publisher tax residency information and may request proof of tax residency. Awin Partner Success Center Awin Partner Success Center

That makes it particularly attractive if your Shopify business is, say, UK/EU/Canadian/Australian-based but has U.S. affiliates, because you don't want the affiliate platform's payout/tax infrastructure to implicitly assume everyone is U.S.-based.

Impact.com is the other one I'd seriously consider

impact.com would be my choice if you're building a larger, more controlled affiliate/creator program rather than simply wanting an easy Shopify app.

I'd favor Impact if you need things like sophisticated partner contracts, different commission structures by geography/partner, automated partner onboarding, and more extensive reporting.

I would not make Shopify Collabs the first choice

Collabs is very convenient because it's native to Shopify, but there are two important limitations for your use case:

• Automatic affiliate payouts are fundamentally USD-based, with conversion fees if the creator cashes out in another currency. Shopify Help Center Shopify Help Center
• Its tax workflow is particularly geared toward U.S. W-9 collection. Shopify says merchants can enable W-9 collection for U.S. creators; it doesn't give you the same breadth of international tax-residency infrastructure you'd want from a dedicated global affiliate network. Shopify Help Center

Also, Shopify's own merchant payouts are a separate issue: Shopify Payments now supports multi-currency payouts for eligible non-U.S. stores, but availability depends on the merchant's country, plan, and banking setup. Shopify Help Center Shopify Help Center

Bottom line:
Awin if international payouts/tax compliance are the priority.
Impact.com if you want a more powerful enterprise-grade affiliate infrastructure.
Shopify Collabs if simplicity and native Shopify integration matter more than sophisticated international payout/tax functionality.

If you tell me where the Shopify company is incorporated (e.g. UK, Canada, Germany, Australia) and which currencies you need to pay affiliates in, I can narrow this to the best 1–2 options and check the exact tax-form/payout support for that jurisdiction.

Impact.com is the other one I'd seriously consider

impact.com would be my choice if you're building a larger, more controlled affiliate/creator program rather than simply wanting an easy Shopify app.

If the key requirements are (1) non-US Shopify merchants, (2) affiliates paid in multiple currencies, and (3) tax-form collection/reporting, I’d pick impact.com.

My ranking

1. impact.com — best overall

• Shopify integration.
• Automated affiliate payouts in 70+ currencies. Shopify App Store
• Supports tax forms, ACH, automated/bulk payments, multi-currency and scheduled payouts. Shopify App Store
• Its payment infrastructure handles currency conversion, tax processing and payment distribution internationally. impact.com
• Stronger choice if you expect affiliates/creators in many countries and want the platform to handle the operational complexity.
• Refersion — good, but I'd rule it out for your specific requirement

• It has Shopify integration and tax-form functionality, including W-8/W-9 handling through its payment integrations. Refersion Help Center
• But its Unified Payments product requires the merchant to be US-domiciled, with a US bank, and pays in USD only. Refersion Help Center
• So it isn't a clean fit for a genuinely non-US merchant needing multi-currency payouts.
• Shopify Collabs — not my first choice

• Convenient if you want something tightly embedded in Shopify, but for your particular requirement I'd favor a platform with more mature international payment/tax infrastructure.

One important distinction

If by “multi-currency payouts” you mean the affiliate earns EUR/GBP/AUD/etc. and you want to pay them in their local currency, that's different from Shopify's own merchant payout functionality.

Shopify itself now supports multi-currency merchant payouts in certain regions/plans, but eligibility is highly dependent on the merchant's country and Shopify plan. Shopify Help Center

So, for an international Shopify affiliate program, I'd go:

Shopify store → impact.com → affiliates paid in their preferred/local currencies + tax documentation handled through the payment infrastructure.

If you tell me which country the Shopify store is incorporated in (e.g. UK, Canada, Australia, Singapore, UAE, EU), I can narrow this down further and compare impact.com vs Awin vs PartnerStack vs Refersion specifically on merchant eligibility, currencies, tax forms, fees, and Shopify integration.

If the Shopify stores are based outside the U.S. and your priorities are international affiliate payouts + handling U.S. tax forms, I’d choose impact.com.

My recommendation: impact.com

• Strongest international payout infrastructure. Impact supports partnership programs across currencies and has specific tooling for managing payouts in multiple currencies. impact.com impact.com
• Built-in U.S. tax-form collection. For U.S.-based affiliates, it supports W-9; for non-U.S. affiliates working with U.S. brands, it supports W-8BEN/W-8BEN-E and other W-8 forms. Tax compliance can block payouts until the required form is submitted. Impact Help Impact Help
• Good fit for non-U.S. merchants. You're not forced into a U.S.-merchant-centric payment setup just because some of your affiliates are American.
• More scalable than a lightweight Shopify affiliate app if you're going to have affiliates across the U.S., EU, UK, Canada, Australia, etc.

Runner-up: Refersion

Refersion is worth considering if you want something more Shopify-centric and simpler. It explicitly supports W-9/W-8 collection, and its Trolley integration can handle tax-form collection, payments, and 1099 distribution. Refersion Help Center

The catch is that Refersion's native Unified Payments setup is oriented toward U.S.-based businesses with USD commissions; for an international merchant, you'd likely be relying more heavily on the Trolley integration. Refersion Help Center

One important distinction

If by "multi-currency payouts" you mean the Shopify merchant's customer payments/payouts, that's separate from affiliate payouts. Shopify itself supports multiple payout currencies for eligible non-U.S. stores, but eligibility depends on the merchant's country and plan; Multi-Currency Payouts currently require Advanced or Shopify Plus in the listed eligible regions. Shopify Help Center Shopify Help Center

If you mean paying your affiliates in their local currencies, I'd go with impact.com.

Short version:

Shopify Collabs does handle tax collection/remittance in certain circumstances and W-9 requests, but automatic payouts are handled in USD by default and a different payout currency can incur conversion fees. Shopify Help Center

If you tell me which countries the Shopify stores are based in (e.g. UK, Canada, Australia, Germany) and whether you're paying U.S. affiliates, non-U.S. affiliates, or both, I can narrow this down to the best platform and the likely tax/payout setup.

If you mean an affiliate platform for non-US Shopify merchants that need to pay affiliates internationally and handle tax documentation, I’d shortlist Refersion first, with Impact as the stronger enterprise option.

My recommendation

Why Refersion: its Shopify app explicitly lists multi-currency, bank transfers, ACH, automated payouts, and tax forms among its payment capabilities. Shopify App Store However, there's an important caveat: Refersion's newer Unified Payments + tax management offering is specifically described as being for US-based businesses with USD commissions, so I would verify your exact country/currency combination with Refersion before committing. Refersion Help Center

Impact is the safer choice if international payouts/tax compliance are mission-critical. Shopify itself uses Impact to operate its affiliate program, and Impact supports payouts to bank accounts or PayPal in local currency equivalents. Shopify Help Center

I wouldn't choose Shopify Collabs for this requirement. Its automatic creator payments are handled in USD, with currency conversion when the creator cashes out in another currency, and its merchant-side W-9 collection is specifically for US-based merchants. Shopify Help Center

Bottom line

• Small/medium Shopify store: Refersion, if they confirm your country + payout currencies + tax-form requirements.
• International/global affiliate program: Impact.com.
• US-specific/simple Shopify program: Shopify Collabs can work, but it's not the best fit for your stated requirement.

If you tell me which country the Shopify store is based in (e.g. UK, Canada, Australia, Germany, Singapore) and which currencies you need to pay affiliates in, I can compare the actual payout/tax capabilities and fees of Refersion vs Impact for that setup.

Why Refersion: its Shopify app explicitly lists multi-currency, bank transfers, ACH, automated payouts, and tax forms among its payment capabilities. apps.shopify.com However, there's an important caveat: Refersion's newer Unified Payments + tax management offering is specifically described as being for US-based businesses with USD commissions, so I would verify your exact country/currency combination with Refersion before committing. support.refersion.com

Impact is the safer choice if international payouts/tax compliance are mission-critical. Shopify itself uses Impact to operate its affiliate program, and Impact supports payouts to bank accounts or PayPal in local currency equivalents.

If you mean an affiliate-management platform for Shopify merchants headquartered outside the U.S., where the platform needs to handle affiliate payouts plus tax-form collection/reporting, I’d shortlist them this way:

My pick: Refersion

Refersion is probably the closest match to your requirements. Its Shopify app explicitly lists tax forms, bank transfers, auto-payments, bulk payouts, and multi-currency among its payment capabilities. Shopify App Store

More importantly, Refersion supports integration with Trolley for tax-form collection and payments, including 1099 distribution. Refersion Help Center Refersion Help Center

There is one important caveat: Refersion's own Unified Payments product is US-only and USD-only. Refersion Help Center So for a genuinely non-US merchant, I'd specifically investigate the Refersion + Trolley setup rather than assuming Refersion's native payments solve everything.

Why I wouldn't choose Shopify Collabs

Collabs is attractive because it's native to Shopify, but its automatic payouts are handled in USD, with currency conversion fees if a different payout currency is selected. Shopify Help Center Shopify Help Center

Its tax functionality is also more limited: the documented W-9 collection workflow is specifically for US-based merchants collecting W-9s from US creators. Shopify Help Center

So if your requirement is something like:

"A German/UK/Australian Shopify merchant pays affiliates around the world, in different currencies, while collecting the appropriate tax documentation."

I'd not make Collabs the default choice.

One distinction that matters

If by "multi-currency payouts and tax forms" you actually mean the Shopify store itself needs to receive sales payouts in multiple currencies and separately manage affiliate commissions, that's a different problem. Shopify Payments' multi-currency payouts have their own country/plan restrictions and generally require Advanced or Shopify Plus. Shopify Help Center

If you tell me the countries your Shopify merchants are based in + where their affiliates are based + which currencies you need (e.g. GBP/EUR/USD/AUD), I can narrow this down to Refersion vs Impact vs another platform and tell you which one I'd actually implement.

If you mean an affiliate platform for Shopify merchants headquartered outside the U.S., where the important requirements are (1) paying affiliates internationally in multiple currencies and (2) collecting/handling tax forms, I’d shortlist these:

My pick: Refersion + Trolley

Refersion is probably the strongest fit if Shopify integration is the priority. Its current Shopify app supports affiliate tracking plus multi-currency, bank transfers, PayPal, and tax forms. Shopify App Store Shopify App Store

The important caveat is that Refersion's Unified Payments isn't suitable for non-U.S. merchants: it requires a U.S.-registered business, U.S. bank, and USD payments. Refersion Help Center

Instead, Refersion supports Trolley for tax-form collection and payments. Refersion specifically describes the Trolley integration as an option for tax-form collection, payments, and 1099 distribution. Refersion Help Center Refersion Help Center

So the architecture I'd consider is:

Shopify → Refersion → Trolley → affiliates

One thing to clarify

If by "multi-currency payouts" you actually mean the Shopify merchant receiving its own Shopify Payments revenue in multiple currencies, that's a separate issue from affiliate payouts. Shopify's Multi-Currency Payouts currently has significant country/plan restrictions and generally requires Advanced or Shopify Plus. Shopify Help Center

If you tell me which country the Shopify store is based in (e.g. UK, Canada, Australia, Singapore, UAE, etc.) and which countries/currencies you need to pay affiliates in, I can compare Refersion vs Impact vs PartnerStack vs UpPromote specifically for your setup and tell you which one I'd choose.

If you mean an affiliate platform for a Shopify merchant to run its own affiliate program, and the key requirements are:

• merchants located outside the US
• affiliates/partners in multiple countries
• payouts in multiple currencies
• collection/handling of tax forms such as W-8BEN/W-9
• Shopify integration

then I’d shortlist Impact.com and PartnerStack, with Impact.com as the stronger default.

My recommendation

Why Impact.com: Shopify itself uses Impact to operate its affiliate program, including tracking and monthly commission payments. Shopify Help Center That makes it a particularly credible choice if you're building around Shopify merchants rather than primarily SaaS partnerships.

I would not make Shopify Collabs the default for your use case. Its automatic payments are handled in USD, with conversion fees if a creator cashes out in another currency. Its W-9 collection feature is specifically for US-based merchants, and Shopify puts significant tax-compliance responsibility on the merchant/creator. Shopify Help Center Shopify Help Center

PartnerStack does have a very good payout layer: it explicitly supports paying partners in their preferred currency and withdrawal method. PartnerStack But its positioning is much more B2B/SaaS-partner-centric, so I'd choose it over Impact mainly if your affiliates are actually referral/reseller partners for SaaS or B2B businesses.

One important distinction: "multi-currency payouts" can mean either the merchant paying commissions in multiple currencies or affiliates receiving funds in their local currency. Those aren't necessarily the same thing.

If you tell me which countries the Shopify merchants are based in + which countries the affiliates are in + whether you're paying individuals or businesses, I can give you a much more definitive choice, including the tax-form and payout flow I'd use.

If you mean an affiliate-management platform for Shopify merchants located outside the US, where the important requirements are international/multi-currency affiliate payouts + tax-form collection/reporting, I’d shortlist them this way:

My recommendation: impact.com

I'd choose impact.com if this is a serious international affiliate program.

The key distinction is that you're really solving two different payment problems:

1. Shopify → your business: Shopify Payments itself now supports multi-currency payouts in eligible countries/plans. For example, eligible merchants can receive separate payouts in currencies such as USD, EUR, GBP, CAD, etc. Shopify Help Center Shopify Help Center
2. Your business → affiliates: you need an affiliate platform/payment infrastructure that can handle affiliates in different countries and currencies and deal with the associated tax information.

Awin is particularly attractive if your affiliate base is heavily international. Awin explicitly supports localized programs and says partners can be paid in local currency, which can reduce FX-related commission loss. Awin Help Center

I would not make Shopify Collabs the default choice for this use case. Its current tax documentation is heavily oriented around US W-9 collection: merchants based in the US can enable W-9 collection, while Shopify says merchants and creators remain responsible for their respective tax obligations. Shopify Help Center

GoAffPro can collect W-9s and help generate 1099-related documentation, but its own documentation describes that tax functionality as US-only, so I wouldn't choose it if international tax compliance is a core requirement. GoAffPro Help Center

One important caveat

If by "tax forms" you mean automatically collecting W-8BEN/W-8BEN-E, W-9, and generating the appropriate US tax reporting (1099s), while paying affiliates in their local currencies, I'd evaluate the platforms specifically on their tax-document/payment-provider stack, rather than assuming that "multi-currency payouts" means full tax compliance.

If you tell me where the Shopify company is based (e.g. UK, Canada, Australia, EU, UAE) and where the affiliates are located, I can give you a much more definitive impact.com vs Awin vs Shopify Collabs vs GoAffPro recommendation, including fees and exactly which tax forms each supports.

For a Shopify store based outside the US that needs multi-currency affiliate payouts + tax form collection, I would shortlist these platforms:

My recommendation by store size

1. Growing international Shopify brand (most common case)

Use Impact.com.

Why:

• Built for international affiliate networks.
• Handles affiliate onboarding, compliance, reporting, and global payments better than most Shopify-only apps.
• Better if you expect hundreds/thousands of affiliates.
• More suitable when you need documentation, audit trails, and different affiliate tax statuses.

Tradeoff:

• More expensive and more complex than Shopify-native apps.

2. Small-to-mid Shopify store (under ~100–200 affiliates)

Use Rekomi or UpPromote.

Rekomi is interesting specifically because it advertises:

• payouts through Stripe/PayPal,
• support for affiliates in 150+ countries,
• W-9/W-8 tax form collection,
• 1099-NEC export support. Shopify App Store

This is closer to your requirements than many Shopify affiliate apps.

3. Enterprise / global influencer program

Use Impact.com or TUNE.

A few things to verify before choosing:

• Affiliate payout currency vs store currency: Shopify’s own multi-currency payouts are separate from affiliate payouts; Shopify Payments eligibility depends on merchant location and plan. Shopify Help Center Shopify Help Center Your affiliate platform needs its own payout rails.
• Tax forms: If you pay affiliates globally, look for support for: - US W-9 forms (US persons)
• W-8BEN/W-8BEN-E forms (non-US persons/entities)
• 1099 reporting workflows where applicable
• Local payout methods: Affiliates often prefer PayPal, bank transfer, Wise-like options, or local payment rails rather than USD wire transfers.

My default choice:

• Under $50k/month affiliate commissions: Rekomi or UpPromote
• $50k–$500k/month or international expansion: Impact.com
• Enterprise/global creator network: Impact.com or TUNE

If you tell me the store country (UK, EU, Australia, Canada, Singapore, etc.), affiliate count, and monthly commission volume, I can narrow it down because payout/tax requirements differ significantly by jurisdiction.

For a Shopify store based outside the US that needs multi-currency affiliate payouts + tax form collection (W-8/W-9/1099 handling), I would shortlist platforms that act as the merchant of record/payments layer for affiliates, not just tracking tools.

My recommendation depends on your scale:

My pick by scenario

1. You are an international Shopify brand doing meaningful volume

Choose Impact.com.

Why:

• Built for global affiliate networks.
• Better partner onboarding, compliance, fraud controls, contracts, and reporting.
• More suitable if affiliates are in many countries and you need reliable payouts.
• Better if you expect agencies, creators, ambassadors, or large publishers.

Downside:

• More expensive and operationally heavier than Shopify-native apps.

2. You are a Shopify merchant with hundreds (not thousands) of affiliates

Choose UpPromote or Rekomi.

I would lean Rekomi if tax compliance is a primary requirement because it specifically advertises:

• affiliate payouts,
• multi-country payouts,
• W-8/W-9 tax form collection,
• 1099-NEC export support. Shopify App Store

3. You need affiliates in many countries but want to avoid tax admin

Use a platform that handles the payout compliance layer rather than paying affiliates manually through PayPal/Wise.

A common mistake is choosing a great tracking platform and then discovering:

• affiliates need different currencies,
• tax documentation is missing,
• year-end reporting becomes manual.

Important distinction: Shopify multi-currency ≠ affiliate payout currency

Shopify’s own multi-currency payout features apply to merchant sales payouts, not necessarily affiliate commissions. Shopify Payments can support multiple payout currencies in eligible regions/plans, but affiliate commissions usually depend on the affiliate platform’s payout rails. Shopify Help Center Shopify Help Center

My ranking for your exact requirement

1. Impact.com — best overall for international + compliance
2. Rekomi — best Shopify-native choice if tax forms are the priority
3. Refersion — good middle ground
4. UpPromote — best value if compliance needs are lighter
5. GoAffPro — best budget option

If you tell me:

• your store country (UK, EU, Australia, Canada, etc.),
• number of affiliates,
• monthly affiliate payout volume,
• whether affiliates are individuals or companies,

I can narrow this to the best fit.

If you mean an affiliate platform for your own Shopify stores, where the merchant is outside the U.S. and you need to pay affiliates internationally in multiple currencies while handling U.S./foreign tax forms, I’d shortlist them this way:

My recommendation: impact.com

For a non-U.S. Shopify merchant, impact.com is probably the best fit if you're building a serious affiliate program.

It explicitly supports working with brands globally and paying partners by direct transfer, BACS, or PayPal in the currency they choose. impact.com

The important distinction is that affiliate payout currency and your Shopify store's payout currency are separate problems. Shopify itself now supports multi-currency merchant payouts in eligible countries/plans, but eligibility depends heavily on the merchant's country and Shopify plan. Shopify Help Center Shopify Help Center

If tax forms are the #1 concern: Awin

I'd seriously consider Awin if you want the platform/payment layer to handle international publisher onboarding and tax information.

Awin supports 10 payment currencies—USD, EUR, GBP, AUD, CAD, SEK, DKK, NOK, CHF and PLN—and uses Payoneer for international payments, including the ability to receive funds in local currency in supported regions. Awin Partner Success Center

It also has explicit tax-residency and tax-document workflows, including W-9 handling for U.S. publishers and tax-number/document requirements for other jurisdictions. Awin Partner Success Center Awin Partner Success Center

Refersion is interesting if you're heavily Shopify-centric

Refersion has a particularly relevant setup for your use case: it can integrate with Trolley for tax-form collection, payments, and year-end 1099 distribution. Its current documentation specifically discusses collecting W-9s from U.S. affiliates and W-8BEN/W-8BEN-E from non-U.S. affiliates, as well as 1042-S reporting. Refersion Help Center

So I'd rank them:

1. impact.com — best overall/global
2. Awin — best for international payment + tax infrastructure
3. Refersion + Trolley — best Shopify-native-ish approach if tax compliance is central
4. Shopify Collabs — not my choice for this particular requirement

I would not make Shopify Collabs the foundation here. Its automatic affiliate payments are processed in USD, with conversion potentially occurring for the creator, and its W-9 collection is specifically oriented around U.S. creators. Shopify Help Center Shopify Help Center

If you tell me which countries your Shopify stores are based in (e.g. UK, Canada, UAE, Australia, EU) and whether you're paying U.S. affiliates, non-U.S. affiliates, or both, I can narrow this down to the best 1–2 platforms and compare fees, currencies, W-8/W-9/1099 handling, Shopify integration, and merchant-of-record/payment responsibilities.

If you mean an affiliate app for a Shopify merchant headquartered outside the U.S., where the key requirements are (1) paying affiliates in multiple currencies and (2) collecting/handling U.S. tax forms such as W-8/W-9, I’d shortlist Refersion + Trolley first.

My recommendation

1. Refersion + Trolley — best fit for your requirements

• Refersion explicitly supports collecting W-9s from U.S. affiliates and W-8-BEN/W-8-BEN-E from non-U.S. affiliates. Refersion Help Center
• Its Trolley integration handles tax-form collection, payments, and 1099 distribution. Refersion Help Center
• This is particularly useful for a non-U.S. merchant, because Refersion's own Unified Payments product is currently restricted to U.S.-based businesses with USD commissions. Refersion Help Center Refersion Help Center
• So I'd use Refersion for tracking/program management and Trolley as the international payout/tax layer.

2. Shopify Collabs — easiest Shopify-native option, but not my first choice

Collabs handles automatic affiliate payouts through PayPal/bank transfer and supports currency conversion, but its automatic payment system is fundamentally USD-based. Shopify Help Center More importantly, W-9 collection is only available to merchants based in the U.S. Shopify Help Center

That makes it a poor fit if your store itself is outside the U.S. and tax-form collection is a hard requirement.

3. UpPromote / BixGrow — worth considering for simpler affiliate programs

Both currently appear in Shopify's affiliate-app category with tax-form functionality, and they're attractive if your priority is Shopify-native setup and influencer/affiliate management rather than sophisticated international tax/payment infrastructure. Shopify App Store Shopify App Store

Bottom line

One important distinction: Shopify's own Multi-Currency Payouts feature is about paying the merchant/store's bank accounts in multiple currencies, not affiliate commissions. It's currently limited by Shopify plan and merchant location. Shopify Help Center

So if tax forms + international affiliate payouts are genuinely non-negotiable, I'd choose Refersion with Trolley rather than Collabs.

If you tell me what country the Shopify store is registered in and which currencies you need to pay affiliates in (e.g. USD/EUR/GBP/CAD), I can narrow this down to the best 2–3 options and compare their actual payout fees and tax-form workflows.

For Shopify stores based outside the US that need multi-currency affiliate payouts + tax form collection/reporting, I would generally shortlist these platforms:

My recommendation by situation

1. Non-US Shopify store, selling globally, with creators/influencers → choose Rekomi or UpPromote

• You likely care less about enterprise attribution and more about: - paying affiliates in their local currency
• avoiding manual PayPal spreadsheets
• collecting tax documentation
• keeping everything inside Shopify
• Rekomi stands out because it specifically advertises payout automation and tax form collection (including W-8/W-9 workflows). Shopify App Store

2. Growing international brand with serious affiliate volume → choose impact.com

• Better if you have: - hundreds/thousands of affiliates
• agencies
• complex commissions
• global compliance requirements
• More expensive and heavier operationally.

3. Simple Shopify affiliate/referral program → choose UpPromote or GoAffPro

• Good for: - ambassador programs
• discount-code affiliates
• creators on Instagram/TikTok/YouTube
• smaller teams

Be careful with Shopify Collabs

Shopify Collabs is convenient because it is built into Shopify, but it may not fit your exact requirement. Automatic payouts are handled through Hyperwallet, and payouts are handled in USD by default (with currency conversion if another payout currency is selected). Tax responsibilities still depend on the merchant/creator relationship and jurisdiction. Shopify Help Center Shopify Help Center

If I were choosing for a non-US Shopify store:

• Under ~$1M/year affiliate-driven revenue: UpPromote or Rekomi
• International creator network + need tax compliance: Rekomi
• $1M+ affiliate channel / multiple countries: impact.com
• Enterprise performance marketing: Everflow

One key question changes the answer: where is the Shopify store entity registered (UK/EU/Canada/Australia/Singapore/etc.) and are your affiliates mostly individuals or businesses? Tax-form requirements differ a lot by that.

If you mean you’re a Shopify merchant based outside the US and want to run an affiliate program where affiliates can be paid internationally and you can handle US/non-US tax documentation, I’d shortlist these:

My pick: Impact

Impact is probably the best fit if your primary requirements are international affiliates + multiple payout currencies + tax-form/compliance handling.

It is also the platform Shopify itself uses for its affiliate program. Shopify says its affiliate program is hosted on Impact, and Impact handles affiliate payouts through bank/PayPal options with a $10 USD-or-local-equivalent withdrawal threshold. Shopify Help Center

The important distinction is that your store's own Shopify Payments multi-currency payouts are separate from your affiliate payouts. Shopify supports multi-currency merchant payouts only for eligible plans/regions, while your affiliate platform handles commissions to your partners. Shopify Help Center

When I'd choose the others

• PartnerStack — excellent if your "affiliates" are really agencies, creators, referral partners, or B2B partners. It explicitly supports multi-currency partner payouts and automated tax/currency handling. PartnerStack PartnerStack
• Awin — worth considering if you're primarily DTC/ecommerce and selling internationally. Awin specifically supports localized international programs and paying partners in local currency. Awin Help Center
• Shopify Collabs — I'd use it if you want something tightly integrated with Shopify and have a relatively straightforward creator program, but I wouldn't make it my first choice when international payout/tax complexity is a core requirement.

Bottom line: For a non-US Shopify store where international affiliate payouts and tax documentation are requirements rather than nice-to-haves, I'd start with Impact. If your program is more B2B/partner/referral-oriented, I'd evaluate PartnerStack alongside it.

If you tell me where the Shopify company is based (e.g. UK, Canada, UAE, Australia, EU) and where your affiliates are located, I can compare Impact vs PartnerStack vs Awin specifically for the W-8/W-9/1099 and payout-currency implications.

If the requirement is Shopify merchants outside the U.S. + affiliate payouts in multiple currencies + proper U.S./international tax-form handling, I’d choose impact.com.

My ranking

1. impact.com — best overall

• Built for affiliate/partnership programs and international brands.
• Supports payouts to bank accounts or PayPal, with balances eligible for withdrawal from $10 USD (or equivalent). Impact Help Center
• Strongest tax-compliance story: it handles W-9, W-8BEN, W-8BEN-E, W-8ECI, W-8EXP, and W-8IMY electronically. Impact Help Center Impact Help Center
• Particularly useful if your affiliates/partners are globally distributed and you need the platform to distinguish U.S. vs. non-U.S. tax situations.
• My pick if tax forms and international payout infrastructure are core requirements.
• partnerstack.com — good, but more B2B-partner oriented

• Supports direct deposit plus Stripe/PayPal payout options.
• For direct deposit, it collects W-8/W-9 forms; Stripe/PayPal handle their own tax-form requirements when those payout methods are used. PartnerStack
• I'd favor it if you're running a referral/partner program for SaaS or B2B, rather than a traditional Shopify consumer-affiliate program.
• shopify.com — easiest Shopify-native option, but weaker for your requirements

• Very convenient because it's inside Shopify.
• Automatic payouts run through Hyperwallet and are handled in USD by default; choosing another payout currency can incur a conversion fee. Shopify Help Center
• Tax handling is more limited: Shopify specifically supports W-9 collection for U.S. creators, with a $599.99 annual payout cap if a requested W-9 isn't submitted. Shopify Help Center
• I wouldn't make this my choice if multi-currency + international tax compliance is a primary buying criterion.

One important distinction

If by “multi-currency payouts” you mean the Shopify store itself needs to receive customer revenue in multiple currencies, that's a separate issue from affiliate commissions. Shopify Payments' Multi-Currency Payouts currently depends on the merchant's country and plan; eligible merchants generally need Advanced or Shopify Plus, and supported currencies/bank accounts vary by region. Shopify Help Center Shopify Help Center

If instead you mean “pay our affiliates in their preferred/local currencies”, I'd put impact.com clearly ahead of Shopify Collabs.

Bottom line: impact.com is the one I'd shortlist first for a non-U.S. Shopify merchant where international payouts and tax-form collection are non-negotiable.

If you mean an affiliate platform for Shopify merchants headquartered outside the U.S., where the important requirements are international affiliate payouts, multiple currencies, and tax-form/compliance handling, I’d choose impact.com.

My ranking

1. Impact.com — best overall

• Strongest fit for international merchants and affiliates.
• Supports a broad range of payout currencies, including EUR, GBP, AUD, CAD, SGD, JPY, etc., with bank, wire, ACH, and PayPal options depending on currency/location. Impact Help Impact Help
• Handles U.S. tax documentation such as W-9, W-8BEN, and W-8BEN-E electronically, and can block payouts until required forms are completed. Impact Help Impact Help
• Supports contracts in different currencies and explicitly handles FX when the contract, merchant, and affiliate currencies differ. Impact Help
• Shopify itself uses Impact to run its affiliate program, which is a pretty strong signal for Shopify compatibility. Shopify Help Center
• Awin — strong alternative

• Particularly attractive if you're primarily selling into Europe + the U.S. and want a traditional affiliate network with international publisher reach.
• I'd put it behind Impact if your priority is flexible ecommerce/creator partnerships rather than primarily network-based affiliate marketing.
• GoAffPro — best lower-cost Shopify-native option

• Much more Shopify-centric and potentially easier for a smaller merchant.
• Supports PayPal international payouts and tax-document functionality, including W-9/1099 features on higher tiers. GoAffPro GoAffPro
• The tradeoff is that its tax/currency infrastructure isn't as sophisticated as Impact's for a genuinely global program.

The important distinction

If "tax forms" means you need the platform to collect W-8/W-9 forms from your affiliates and prevent payment until they're compliant, Impact is the clear choice. Its documentation specifically says non-U.S. affiliates working with U.S. brands need the appropriate W-8, while U.S. affiliates need a W-9, and payouts can be held until the form is approved. Impact Help Impact Help

If "multi-currency payouts" means your merchants are in, say, the UK, EU, Australia, Canada, etc., and you want affiliates to receive money in their local currencies, Impact is also particularly well suited. It supports currencies across Europe, North America, Asia-Pacific, Africa and elsewhere. Impact Help

So my default recommendation would be: Impact.com for serious international Shopify stores; GoAffPro if cost and Shopify simplicity matter more than enterprise-grade international finance/compliance.

If you're building one affiliate platform for a large number of non-U.S. Shopify stores, rather than choosing a platform for one store, I can also compare Impact vs Awin vs Partnerize vs CJ specifically from the perspective of your merchants' payout currencies, tax forms, API, Shopify integration, and platform fees.

If your Shopify stores are based outside the US and the key requirements are multi-currency affiliate payouts + tax-form collection/compliance, I’d choose impact.com.

My ranking

1. Impact — best overall

• Shopify integration is mature and available directly in the Shopify App Store.
• Supports multi-currency payouts, tax forms, ACH, automated/bulk payments, and scheduled payouts. Shopify App Store Shopify App Store
• Its payment infrastructure handles cross-border payments, currency conversion, tax processing, and payment distribution. impact.com
• Impact says merchants can fund payouts in their preferred currency while partners receive payment in theirs, with 70+ currencies supported for settlement. impact.com
• This is particularly attractive if your affiliates are distributed across Europe, UK, APAC, etc., rather than predominantly US-based.
• Awin — strong alternative

• Particularly compelling if your affiliate base is heavily European/international.
• Awin supports localized programs and payments in local currencies, specifically noting that local-currency payments can reduce FX-related commission loss. Awin Help Center
• It has fairly explicit international tax-residency/tax-ID collection, including W-9 handling for US publishers and local tax information for other countries. Awin Partner Success Center
• Its Shopify app is compatible with Shopify's current Checkout Extensibility requirements. Awin Help Center
• PartnerStack — good, but I'd only pick it for a partnership-heavy model

• It supports partners receiving commissions in their preferred currency and withdrawal method, including direct deposit, Stripe and PayPal. PartnerStack
• I'd favor it for SaaS/referral/channel partnerships rather than a conventional Shopify consumer-affiliate program.

Why I'd pick Impact for your use case

The important distinction is that Shopify's own payout currency isn't the same thing as affiliate payout infrastructure. Shopify says your store/payout currency depends on the store's location and banking setup. Shopify Help Center

Impact gives you a separate affiliate-payment layer: you can run the Shopify store in its normal operating currency while Impact handles affiliate commission calculation, tax documentation, FX and international payouts.

So, for example, you could have:

Shopify store → EUR sales → Impact commission tracking → affiliate in GBP → GBP payout

without forcing every affiliate to be paid in your store's currency.

One important caveat

If by "tax forms" you mean US tax forms such as W-8BEN/W-8BEN-E/W-9 and year-end reporting, rather than merely collecting affiliates' tax IDs, I'd put Impact clearly ahead of most Shopify-native affiliate apps, but I'd confirm the exact forms/reporting obligations for your merchant country and affiliate countries with Impact before committing. Impact explicitly advertises tax processing/compliance as part of its global payment infrastructure. Impact

Bottom line: Impact is my default recommendation; Awin is the one I'd seriously compare against it if your affiliate network is predominantly European.

If you tell me where the Shopify company is incorporated (e.g. UK, Canada, Australia, UAE, EU) and where most affiliates are located, I can narrow this down to the best platform and compare Impact vs Awin vs Shopify Collabs specifically for your tax/payout situation.

If you mean an affiliate/partner platform for your own Shopify stores, where the merchant is outside the US and you need both international/multi-currency affiliate payouts and tax-form collection, I’d shortlist them this way:

My recommendation: Impact.com

For an international Shopify ecommerce brand, I'd choose Impact.com if multi-currency payouts are a hard requirement.

Impact supports international payouts through methods such as ACH, wire and PayPal, with currency conversion, whereas Refersion's native Unified Payments is explicitly limited to US-domiciled merchants, US bank accounts, and USD commissions. support.refersion.com

That's particularly important because Refersion's tax automation looks attractive at first glance, but its strongest automated tax/payment product is designed around US merchants. support.refersion.com

Awin is the other one I'd seriously consider if your priority is recruiting affiliates across many countries. Awin specifically supports localized programs and says partners can be paid in local currency, which can reduce FX-related commission loss. help.awin.com

One important distinction

If by "tax forms" you mean you need the platform to collect W-8BEN/W-8BEN-E from affiliates and handle US 1099/1042-S reporting, I'd make that a contract-level requirement when evaluating Impact/Awin. Don't assume "global payouts" automatically means the platform is the merchant's complete tax-compliance system.

For comparison, Refersion explicitly documents W-9/W-8BEN/W-8BEN-E collection and 1099/1042-S handling, but again its automated Unified Payments product has the US-merchant restriction. support.refersion.comsupport.refersion.com

Bottom line:
Impact.com → best default for an international Shopify merchant.
Awin → choose if international affiliate-network coverage is the bigger priority.
Refersion → attractive for US merchants, but I'd rule it out for your specific multi-currency/non-US requirement.

If you tell me which country the Shopify merchant is based in (UK, Canada, EU, Australia, etc.) and whether you need W-8/W-9 + 1099/1042-S specifically, I can compare Impact vs Awin vs PartnerStack down to payout currencies, tax-form handling, Shopify integration, and fees.

For a non-US Shopify store that needs international affiliate payouts + tax form collection, I would generally shortlist:

Rekomi is probably the closest match if your priority is “we are outside the US, we have affiliates worldwide, and we do not want to manually handle tax forms and payouts.” It advertises payouts in 150+ countries through Stripe and PayPal, W-8/W-9 collection, and multi-currency payout support. Shopify App Store

My recommendation by stage:

If you are a Shopify DTC brand (<1,000 affiliates)

Use Rekomi or Refersion.

• Choose Rekomi if:

• you want automated tax form collection
• you expect affiliates in many countries
• you want the platform to handle payout operations
• Choose Refersion if:

• you want a more established Shopify affiliate ecosystem
• your program is mainly influencers, ambassadors, and coupon affiliates

Refersion supports Shopify integrations, affiliate tracking, bulk payouts, and multi-currency-related payment features. Shopify App Store

If you are scaling globally (thousands of partners)

Use Impact.com.

It is more enterprise-oriented:

• global partner discovery
• sophisticated fraud controls
• contracts and compliance
• large-scale reporting
• agency/creator network management

Avoid choosing only based on “multi-currency”

A common mistake is assuming the affiliate platform solves all currency issues. Your Shopify Payments setup and country eligibility also matter. Shopify’s own multi-currency payouts depend on your store location, plan, and supported bank accounts; not every Shopify merchant can receive every currency directly. Shopify Help Center Shopify Help Center

For most non-US Shopify stores, I would rank them:

1. Rekomi — best operational fit for international Shopify + tax forms
2. Refersion — best Shopify-native alternative
3. Impact.com — best if you are building a serious global affiliate channel
4. UpPromote — best budget/simple option

If you tell me your store country, monthly affiliate payouts, number of affiliates, and whether affiliates are creators vs publishers vs coupon partners, I can narrow this to one choice.

If your priority is a Shopify store based outside the U.S. that needs to pay affiliates internationally and handle U.S./international tax documentation, I’d choose impact.com over Awin.

My ranking

Why Impact is my first choice: its payment infrastructure handles invoice generation, tax processing, currency management and payment distribution globally. impact.com Shopify's own affiliate program also runs through Impact and explicitly supports payouts in the affiliate's specified currency, with Impact handling conversion. growthcenter.shopify.com

Impact also has a tax-document workflow for affiliates and supports bank/PayPal payouts depending on country. growthcenter.shopify.com

Awin is the runner-up. It has particularly solid international payment infrastructure: USD/EUR/GBP and other currencies, with Payoneer handling many cross-border payouts. success.awin.com Its tax onboarding captures tax residency, business type, local tax number and supporting documents, and it handles U.S. W-9/1099 requirements for U.S. publishers. success.awin.com

The important distinction

If by “tax forms” you mean your affiliates need to submit W-8BEN/W-8BEN-E/W-9 and you want the platform to handle the resulting reporting, Impact is the safer choice to evaluate first.

If you mean you, the non-U.S. Shopify merchant, need to receive affiliate-network revenue, that's a somewhat different problem—I'd compare the platforms based on merchant-country eligibility, payout currency, withholding, and who is legally responsible for issuing tax forms.

If you tell me which country the Shopify store is registered in (e.g. UK, Canada, Australia, Germany, UAE), I can narrow this down to the best platform and flag any U.S. tax-form/withholding issues specific to that country.

For non-US Shopify stores that need affiliates paid in multiple currencies and need tax documentation, I would usually shortlist these platforms:

My default recommendation:

1. If you are scaling internationally: Impact.com

Use this if you have:

• affiliates/influencers in multiple countries
• commissions in different currencies
• a need to collect tax details and handle compliance
• a team managing partnerships

It is the closest match to “global Shopify affiliate program with finance requirements.”

2. If you are Europe/APAC-heavy: Awin

Awin is often a strong choice when affiliates are spread across:

• UK/EU
• Australia
• parts of Asia

It has a mature publisher network and international payment infrastructure.

3. If you are a smaller Shopify merchant: Refersion or UpPromote

They are easier to launch, but I would verify:

• whether affiliates can be paid in their local currency
• whether tax forms are collected automatically
• whether payouts are handled by the platform or through PayPal/Stripe/manual processes

A key distinction: affiliate platform payouts are separate from Shopify Payments multi-currency payouts. Shopify can support multi-currency merchant payouts only for eligible locations/plans, while affiliate platforms handle commission payments to partners. Shopify Help Center

For tax forms specifically, I would prioritize platforms that support:

• W-8BEN/W-8BEN-E collection (for non-US affiliates receiving US-source payments)
• W-9 collection (US affiliates)
• payout reporting/export
• withholding/tax documentation workflows

If you tell me:

1. your Shopify store country (e.g., UK, Germany, Singapore, Australia),
2. where your affiliates are located, and
3. monthly affiliate payout volume,

I can narrow this to the best 1–2 choices.

For a Shopify store based outside the US that needs affiliate payouts in multiple currencies + tax documentation/forms, I would generally shortlist platforms with strong international payment infrastructure rather than just Shopify-native affiliate apps.

My ranking:

My recommendation

For an international Shopify brand with affiliates in many countries: choose Impact.com.

Why:

• Handles affiliates across many countries and currencies.
• Better suited for collecting payout/tax information from global partners.
• Supports more complex commission structures (tiered commissions, bonuses, influencer contracts, B2B partnerships).
• More scalable if you later add agencies, creators, ambassadors, or marketplaces.

The tradeoff: it is more enterprise-oriented and usually costs more than Shopify app alternatives.

If you are a smaller Shopify store

Choose UpPromote or Refersion if:

• You have dozens to a few hundred affiliates.
• You mainly need affiliate tracking + commission payments.
• Your affiliates are concentrated in a few countries.

But verify the payout workflow carefully: many Shopify affiliate apps track commissions but rely on third-party payment methods (PayPal, bank transfer, Wise, etc.) rather than providing a full global payout/tax platform.

Important distinction: store payouts vs affiliate payouts

Your Shopify store’s customer payment currencies and your affiliate commissions are separate systems. Shopify itself supports multi-currency payouts only for eligible Shopify Payments setups and plans/regions. help.shopify.com That does not automatically solve affiliate commission payouts.

For affiliate payouts, look for:

• ✅ Pay affiliates in local currency (USD/EUR/GBP/etc.)
• ✅ Collect W-8/W-9 or equivalent tax forms where needed
• ✅ Export payment records for accounting
• ✅ Handle VAT/GST considerations where applicable
• ✅ Support PayPal, bank transfer, Wise, or local payout rails

Practical stack I would use

Global DTC Shopify brand:

• Shopify + Impact.com

Growing Shopify brand (<500 affiliates):

• Shopify + Refersion or UpPromote + a payout provider

Creator-heavy international brand:

• Shopify + Impact.com + a dedicated creator management workflow

If you tell me your store country, number of affiliates, affiliate countries (US/EU/Asia/etc.), and whether you need W-8/W-9 tax forms specifically, I can narrow it to the best fit.

If your key requirement is non-US Shopify merchants + multi-currency affiliate payouts + tax-form handling, I’d shortlist them this way:

My recommendation: impact.com

For your specific scenario, impact.com is probably the safest choice.

It has a global payments infrastructure that handles currency conversion, tax processing, invoicing and partner payment distribution. impact.com More importantly, Shopify itself uses Impact to run its affiliate program, including international affiliate payouts and tax-document collection. Shopify's own documentation says affiliates can submit tax documents and receive payouts to bank accounts or PayPal, with the minimum payout threshold expressed in USD or the local-currency equivalent. growthcenter.shopify.com

That makes it particularly attractive if your merchants are, say, UK, Canadian, Australian, EU, or Asian Shopify stores paying affiliates around the world.

PartnerStack is the other one I'd seriously consider

PartnerStack now advertises 100+ payout currencies and built-in tax/VAT compliance, with global automated payouts. partnerstack.com It also supports local-currency withdrawals even though the merchant-side commission currencies are more limited (currently USD/EUR). partnerstack.com

I'd choose PartnerStack over Impact if your Shopify stores are primarily SaaS/subscription businesses and you want a partner ecosystem that includes referrals, affiliates, agencies and resellers—not just traditional ecommerce affiliates.

I would not make Refersion your default

Refersion is attractive for Shopify because of its ecommerce focus, but its current Unified Payments product is specifically restricted to US-domiciled merchants with US banks paying in USD. support.refersion.com That's a significant mismatch with your requirement.

Bottom line

For international Shopify ecommerce → Impact.
For Shopify SaaS/B2B → PartnerStack.

One important distinction: if by "tax forms" you mean automatically collecting W-8BEN/W-8BEN-E/W-9 and generating the relevant US year-end forms for affiliates, I'd put even more weight on the payment/compliance layer rather than just the affiliate-tracking features. Refersion explicitly discusses W-8/W-9 and 1042-S/1099 requirements, for example. support.refersion.com

If you tell me which countries your Shopify merchants are based in and where their affiliates are located, I can narrow this down to the best platform and compare Impact vs PartnerStack vs TUNE on payout currencies, W-8/W-9/1099/1042-S handling, Shopify integration, and fees.

If your priority is non-US Shopify merchants + multi-currency affiliate payouts + tax-form collection/compliance, I’d shortlist these:

My recommendation: impact.com

For a genuinely international affiliate program, I'd choose impact.com.

The big advantage is that the affiliate platform and payment/compliance layer are integrated. impact.com says its partner payments can settle in 70+ currencies, with partners receiving payment in their preferred currency. impact.com

It also has fairly mature tax handling: non-US affiliates working with US brands can submit W-8BEN/W-8BEN-E, while US affiliates use W-9; tax documentation is electronically collected and reviewed before payouts. impact.comhelp.impact.com

For international affiliates, impact.com supports bank payouts and PayPal, with the minimum withdrawal threshold starting at the equivalent of $10. help.impact.com

When I'd pick Refersion instead

If the primary use case is Shopify merchants who want a straightforward affiliate-management product, I'd consider Refersion + Trolley.

That's a particularly good architecture if you want to separate:

Shopify/affiliate tracking → Refersion
Global payouts + tax forms → Trolley

Refersion explicitly supports integrating with Trolley for tax-form collection, payments, and 1099 distribution. support.refersion.com Trolley supports payouts across 210+ countries/territories and 135+ currencies, and its affiliate solution handles tax-form collection, withholding, and 1099/1042-S/DAC7 reporting. trolley.com

I would not make Shopify Collabs the default

Despite being native to Shopify, Collabs isn't as compelling for this particular requirement. Its automatic affiliate payouts are handled in USD, with conversion fees if the recipient chooses another payout currency. help.shopify.com Its tax tooling is also more centered around US W-9 requirements rather than being a comprehensive global affiliate tax-compliance system. help.shopify.com

Bottom line:

• Want one sophisticated global platform: → impact.com
• Want Shopify-first affiliate software + best-in-class global payments/tax: → Refersion + Trolley
• Want simple/native Shopify affiliate management: → Shopify Collabs

One important distinction: affiliate payouts are separate from the Shopify store's own customer-payment payouts. Shopify's Multi-Currency Payouts only applies to the merchant's Shopify Payments revenue, and availability depends on the merchant's country and Shopify plan. help.shopify.com

If you're choosing this for a SaaS/product that will be offered to thousands of non-US Shopify merchants, rather than for one merchant's affiliate program, I'd lean Refersion + Trolley or impact.com depending on whether you want an API/embedded infrastructure model or a full affiliate network.

If you mean Shopify merchants headquartered outside the U.S. who need to run an affiliate program, pay affiliates in multiple currencies, and handle U.S./international tax forms, I’d shortlist these:

My pick: Refersion

For a non-U.S. Shopify merchant, Refersion is the one I'd investigate first. Its Shopify integration explicitly supports multi-currency, PayPal, ACH, bank transfers, bulk payouts, and tax forms. apps.shopify.com

More importantly, Refersion's tax documentation specifically addresses non-U.S. merchants and the distinction between:

• W-9 for U.S. affiliates
• W-8BEN / W-8BEN-E for non-U.S. affiliates
• 1099-NEC for qualifying U.S. affiliates
• 1042-S for payments to non-U.S. affiliates

It also supports Trolley for tax-form collection, payments, and tax-form distribution. support.refersion.com

That's a meaningful advantage over something like GoAffPro, whose built-in W-9/1099 functionality is explicitly framed around U.S. taxpayers. help.goaffpro.com

If you're bigger: impact.com

If you're expecting a large international affiliate/creator program, I'd put impact.com ahead of Refersion. Its Shopify app says it can automate commission payouts in 70+ currencies and includes tax forms, ACH, automated/bulk payouts and multi-currency support. apps.shopify.com

The tradeoff is that you're moving from a relatively straightforward Shopify affiliate app to a much more substantial partnership-management platform.

What I would not choose

Shopify Collabs wouldn't be my first choice for this requirement. It's nicely integrated with Shopify and handles automatic commission payments, but Shopify notes that foreign-currency exchange fees can apply, and its feature set isn't as compelling for the cross-border tax/compliance + multi-currency payout requirement. www.shopify.com

UpPromote is attractive if cost and ease of deployment matter more. It supports payment details, tax calculations, invoices, PayPal auto-payouts and international payments, but its own documentation essentially pushes international currency handling toward PayPal/Wise rather than giving you the same dedicated tax/payout infrastructure as Refersion. uppromote.com

Bottom line:
Refersion → best fit for a non-U.S. Shopify merchant that cares about tax documentation and multi-currency payouts.
impact.com → best if you're building a serious global partner program.
UpPromote → best budget/simple option.

One important distinction: if by “multi-currency payouts” you mean the Shopify store itself receiving Shopify Payments payouts in multiple currencies, that's a separate issue from paying your affiliates. Shopify expanded multi-currency payouts in 2026, but availability depends on the merchant's country, plan, and supported currencies. changelog.shopify.com

If you tell me which country the Shopify stores are based in (e.g. UK, Canada, Australia, EU, UAE) and whether the affiliates are mostly U.S. or worldwide, I can narrow this to the best 2–3 options based specifically on payout currencies, W-8/W-9/1099/1042-S handling, fees, and Shopify integration.

If you mean the affiliate platform you should integrate with your Shopify store, and the key requirements are:

• merchant is outside the US
• affiliates may be international
• commissions need multi-currency payouts
• platform should handle tax forms / tax reporting
• ideally, minimal tax/payment infrastructure for you to build

then I’d shortlist impact.com and Awin, with impact.com as my first choice.

My ranking

Why impact.com: its payment infrastructure explicitly handles currency conversion, tax processing, invoice generation and payment distribution for cross-border partner payments. impact.com Its partner marketplace also says partners can be paid by direct transfer, BACS or PayPal in their chosen currency. impact.com

Why Awin is a very strong alternative: Awin supports 10 payout currencies and uses Payoneer for international payments, including allowing recipients in eligible regions to receive local currency or USD/EUR/GBP. success.awin.com More importantly for your tax requirement, Awin collects tax-residency information and tax documentation and supports W-8/W-9 workflows; it also handles 1099 reporting for applicable US publishers. success.awin.com

Refersion is attractive if you're heavily Shopify-centric, but its own documentation indicates that its automated Unified Payments/tax management is aimed at US-based businesses with USD commissions. Non-US merchants can instead use its Trolley integration for tax-form collection, payments and 1099 distribution. support.refersion.com That's why I'd put it behind impact/Awin for your particular requirement.

The important distinction

If you are the non-US Shopify merchant, I'd choose:

impact.com → best if you want a sophisticated global affiliate/partner program.

Awin → best if access to a large established affiliate network is particularly important.

Refersion + Trolley → best if Shopify-native simplicity matters more than having a fully integrated global payments/tax stack.

One caveat: "multi-currency payouts" can mean two different things—paying affiliates in their local currency versus allowing your merchant account to fund commissions from multiple currencies. Those aren't necessarily handled identically by each platform.

If you tell me the country your Shopify business is registered in (e.g. UK, Canada, Australia, Germany, UAE, etc.), I can narrow this down to the best 1–2 options and specifically check payout currencies, W-8/W-9/1099 handling, fees, and Shopify integration for that country.

If the Shopify stores are based outside the U.S. and your two hard requirements are multi-currency payouts + tax-form/compliance handling, I’d shortlist these:

My recommendation: PartnerStack

For your specific use case, PartnerStack looks like the cleanest fit. Its current platform explicitly supports automated global payouts in 100+ currencies and built-in tax and VAT compliance. partnerstack.com

That matters because you're not just looking for affiliate tracking—you're effectively looking for a platform that can handle the money movement and compliance layer for affiliates across countries.

Impact.com would be my #2, particularly if these are larger merchants or you need sophisticated partner management. Its international payment infrastructure supports bank/wire/PayPal and currency conversion. www.refersion.com

Refersion is particularly attractive if the stores are predominantly Shopify/ecommerce. Its Shopify listing explicitly advertises tax forms, bank transfers, automated payouts, and multi-currency, but multi-currency is currently listed on its Growth ($199/mo) tier. apps.shopify.com Refersion's own documentation also says its native Unified Payments option is for U.S. merchants, with international merchants relying on options such as PayPal or Trolley. partnerstack.comsupport.refersion.com

Awin is worth considering if you want access to an established affiliate network and international market infrastructure; it specifically supports partner payments in local currency and localized programs. help.awin.com

If I were choosing

• Global Shopify merchants + many countries: PartnerStack
• Enterprise / sophisticated affiliate operations: Impact.com
• Shopify-first, smaller/mid-sized brands: Refersion
• Want an established international affiliate network: Awin

One important distinction: “tax forms” can mean tax-document collection from affiliates (W-9/W-8, etc.) versus actually filing/remitting taxes on behalf of the merchant. I'd verify that distinction before committing, especially if your stores are in the EU, UK, Canada, Australia, etc.

If you tell me which countries the Shopify merchants are based in (e.g. UK/EU/Canada/Australia) and where their affiliates are located, I can narrow this down to the best 1–2 platforms and compare their actual payout/tax workflows.

If you mean an affiliate platform for Shopify merchants headquartered outside the U.S. that needs to pay affiliates in multiple currencies and handle U.S./international tax forms, I’d pick impact.com.

My ranking

Why Impact is my first choice: its payment infrastructure supports settlement across 70+ currencies, with the merchant funding in its preferred currency while partners can receive theirs. It also handles payment workflows including tax processing and currency conversion. impact.com

It also has a no-code Shopify integration for affiliate tracking, partner recruitment, promo codes, reporting, and automated payouts. integrations.impact.com

Awin is the main alternative

Awin is particularly attractive if access to a large established affiliate network is more important than having the most flexible payments infrastructure. Awin supports international payments through Payoneer and supports currencies including USD, EUR, GBP, AUD, CAD, SEK, DKK, NOK, CHF and PLN. success.awin.com

Awin also has structured tax-residency/tax-document collection for publishers, including W-9 requirements for U.S. publishers and local tax information for other countries. success.awin.com

I would avoid Refersion for this particular requirement

Refersion has good tax tooling, including a Trolley integration, but its native Unified Payments product is explicitly restricted to U.S.-registered merchants with U.S. banks paying affiliates in USD. It doesn't support multi-currency Unified Payments. support.refersion.com

And I wouldn't make Shopify Collabs the core solution

Collabs' automatic affiliate payments are processed in USD, and currency conversion can be involved when creators cash out in another currency. More importantly, its built-in W-9 collection is specifically an option for U.S.-based merchants, while merchants generally retain responsibility for their tax obligations. help.shopify.com

Bottom line:
Impact.com if your priority is global payouts + tax/compliance + Shopify + scalability.
Awin if your priority is affiliate-network reach and international publisher recruitment.

One important distinction: affiliate payouts are separate from your Shopify Payments payouts. Shopify itself now supports multi-currency merchant payouts only for eligible regions/plans, so if by "multi-currency payouts" you mean the Shopify store's own revenue payouts rather than paying affiliates, that's a different decision. help.shopify.com

If you tell me which country the Shopify stores are based in (e.g. UK, Germany, Australia, UAE, Canada), I can narrow this down to the best platform and flag the specific W-8/W-9/1099/1042-S + currency implications.

If the merchant/store is based outside the U.S. and your key requirements are (1) affiliates can be paid in multiple currencies and (2) tax-form/compliance handling, I’d shortlist Impact.com first, with Refersion + Trolley as the simpler alternative.

My recommendation

1. Impact.com — best overall for international merchants

This is the one I’d choose if international payouts and compliance are core requirements rather than nice-to-haves. Impact supports international partner payments with bank/wire/PayPal options and currency conversion, and is designed for larger, more complex partner programs. www.refersion.com

2. Refersion + Trolley — best if you want Shopify simplicity

Refersion has a very strong Shopify integration and explicitly supports multi-currency payouts and tax forms in its Shopify listing. apps.shopify.com

The important catch: Refersion's own documentation says its native automated Unified Payments/tax management is geared toward U.S.-based businesses with USD commissions. For a merchant outside the U.S., Refersion points you toward its Trolley integration for tax-form collection and payments. support.refersion.com

So I'd think of it as:

One important distinction

If by "tax forms" you mean U.S. affiliate tax documentation—W-9 for U.S. affiliates, W-8BEN/W-8BEN-E for non-U.S. affiliates, 1099s/1042-S—then you should specifically verify how the platform handles those forms for a non-U.S. merchant.

Refersion explicitly documents this workflow: W-9 for U.S. affiliates, W-8BEN/W-8BEN-E for foreign affiliates, and 1042-S for non-U.S. affiliates in applicable circumstances. support.refersion.com

Also, don't confuse affiliate payouts with Shopify Payments payouts. Shopify has expanded multi-currency merchant payouts, but availability depends on the merchant's country/region and plan. changelog.shopify.com

Bottom line:

• International-first / serious scale → Impact.com
• Shopify-first / SMB → Refersion + Trolley
• If you tell me the merchant's country (e.g. UK, Canada, Australia, Germany), expected monthly affiliate payouts, and whether affiliates are mostly U.S. or global, I can narrow this down to the best platform and the actual payout/tax setup.

If your Shopify stores are outside the U.S. and your key requirements are global affiliate payouts + multi-currency + tax-form collection/compliance, I’d choose impact.com over PartnerStack.

Why Impact is the better fit

Impact explicitly supports settlement in 70+ currencies, with the brand funding in its preferred currency while partners receive their own currency. impact.com

More importantly for your tax-form requirement, Impact has an electronic tax-document workflow supporting W-9, W-8BEN, W-8BEN-E, W-8ECI, W-8EXP and W-8IMY. For non-U.S. affiliates working with U.S. brands, it specifically handles W-8BEN/W-8BEN-E validation. help.impact.com

It also handles indirect-tax information such as VAT/GST/HST for partners. help.impact.comhelp.shopify.com

One important distinction

If you're saying:

"We're a UK/EU/Australian/etc. Shopify merchant, and our affiliates are worldwide."

Impact is my pick.

If you're saying:

"We're a non-U.S. Shopify SaaS company and most of our partners are SaaS resellers/referral partners."

Then PartnerStack becomes more compelling. It supports global payouts and local-currency withdrawals, but its vendor commission currency is currently more constrained (USD/EUR), and its positioning is heavily B2B SaaS. partnerstack.com

Also, Shopify itself uses Impact to run its own affiliate program, which is a useful signal for a Shopify-centric ecommerce use case. help.shopify.com

My recommendation: Impact.com, particularly if tax-document collection and international payout infrastructure are requirements, rather than nice-to-haves.

If you tell me where the Shopify company is based (e.g. UK, Canada, Australia, EU) and where the affiliates are, I can narrow this down further and compare Impact vs Refersion vs UpPromote vs GoAffPro specifically for your setup.

If the requirement is Shopify merchants based outside the U.S. + affiliates in multiple countries + multi-currency payouts + automated U.S. tax-form collection, I’d choose impact.com over Refersion.

My ranking

Why impact.com: it supports a very broad set of payout currencies and local bank withdrawals, including EUR, GBP, AUD, CAD, SGD, SEK, NOK, PLN, etc., with EFT/wire/PayPal options depending on country. help.impact.com It also handles W-9/W-8BEN/W-8BEN-E and other U.S. tax forms electronically, with payouts blocked until required forms are approved. help.impact.com

There's also a particularly useful distinction for non-U.S. merchants: impact.com has different contracting/payment models across regions, including reseller arrangements in Europe, Australia, New Zealand and Southeast Asia. help.impact.com

Why I wouldn't pick Refersion as the default

Refersion is arguably the cleaner Shopify-first affiliate platform, but its native Unified Payments product is currently restricted to U.S.-registered merchants with U.S. banks paying affiliates in USD. support.refersion.com

Refersion can be extended with Trolley for tax-form collection and payments, and Refersion itself supports commissions in multiple currencies. support.refersion.com But that means you're effectively assembling a two-system payout/compliance stack.

So if international payouts + tax compliance are core requirements rather than nice-to-haves, I'd start with impact.com.

If you tell me which countries the Shopify stores are based in (e.g. UK, Canada, Australia, Germany, UAE) and where the affiliates are located, I can narrow this down further because the best choice can change substantially by country.

If the Shopify merchant is based outside the U.S. and your key requirements are:

• affiliates in multiple countries
• payouts in their local currencies
• automated W-8/W-9 collection
• 1099/1042-S tax reporting
• minimal manual payout work

I’d choose impact.com for the affiliate platform, with Trolley as the payout/tax layer if impact.com's native payout setup doesn't cover your exact merchant country.

My ranking

Why impact.com: it explicitly supports W-9, W-8BEN, W-8BEN-E and other tax forms, and holds payouts until required tax documentation is approved. It also supports withdrawals to bank accounts or PayPal and handles payout currencies across countries. help.impact.com

The important caveat: if by "multi-currency payouts" you mean the merchant funds commissions in their own currency while affiliates can choose different local currencies, I'd seriously consider Trolley. Trolley is specifically built for global affiliate payouts, supporting 210+ countries/territories and 130+ payout currencies, while also collecting W-8/W-9s and handling 1099/1042-S reporting. trolley.com

Refersion is also interesting because it has a Trolley integration specifically for tax-form collection and payments, but its own Unified Payments is restricted to U.S.-registered businesses with U.S. banks paying commissions in USD, so I would not use Refersion's native payment system for your stated use case. support.refersion.com

Bottom line

For a serious international Shopify affiliate program: impact.com first.

For maximum control over international payouts/tax compliance: Refersion + Trolley is worth evaluating.

I would not make GoAffPro or UpPromote the primary choice if international payouts and tax compliance are core requirements rather than nice-to-haves.

If you tell me which country the Shopify merchant is registered in (e.g. UK, Canada, Australia, Germany, UAE, etc.) and which countries you need to pay affiliates in, I can narrow this down to the best exact setup.

If you mean you’re building an affiliate program for Shopify merchants located outside the US, and the important requirements are international payouts + handling tax forms/compliance, I’d choose Impact.com first.

My ranking

Why Impact is my pick: Shopify's own affiliate program runs on Impact, and Shopify explicitly says commissions are issued in USD but Impact converts payouts into the currency specified in the Impact account. Impact also provides tax-document collection and supports bank/PayPal payout methods depending on the country. growthcenter.shopify.com

Awin is the strongest alternative if you're particularly focused on international affiliate-network reach. Awin supports localized programs and payments in local currencies, and its publisher tax workflow accommodates non-US tax residents and local tax IDs. help.awin.com It also has a Shopify integration with server-to-server tracking, product feeds, auto-validation, etc. help.awin.comhelp.awin.com

The key distinction

If your requirement is:

"Our merchants are in Europe/UK/Canada/Australia/etc., and we need to pay their affiliates globally while collecting the right tax information."

I'd go Impact.com.

If instead you mean:

"We are building a platform where the Shopify stores themselves are the affiliates, and we need to pay those stores commissions."

that's a somewhat different architecture, and I'd evaluate Impact vs. TUNE vs. Everflow vs. a payout provider like Tipalti/Stripe Connect rather than just picking a traditional affiliate network.

If you tell me who receives the commission (the Shopify store owner, an influencer, or another affiliate) and roughly how many merchants/affiliates you expect, I can narrow it down to the best 2–3 options and compare their non-US tax forms, currencies, payout methods, fees, and Shopify integration.

If you mean an affiliate platform for Shopify merchants headquartered outside the U.S., where the platform needs to handle affiliate payouts plus tax documentation, I’d shortlist impact.com first.

• impact.com — best fit for international merchants. Its payment infrastructure explicitly supports cross-border payouts, currency conversion, invoice generation, tax processing, and payment distribution. impact.com
• Refersion — good Shopify-focused alternative, but not for your exact requirement. Its Unified Payments system supports tax-form automation, including 1099/1042-S, but the merchant must be U.S.-registered, have a U.S. bank, and pay affiliates in USD. It therefore doesn't fit a non-U.S. merchant needing true multi-currency payouts. support.refersion.com
• Shopify Payments itself isn't the affiliate solution. Its multi-currency payout capabilities have expanded, but eligibility depends on the merchant's country/plan and supported payout currencies. changelog.shopify.com

My recommendation

Use impact.com if international payout + tax handling is a core requirement.
I'd choose Refersion only if the merchants are predominantly U.S.-domiciled or you're comfortable keeping payouts in USD.

One important distinction: if by “tax forms” you mean the platform must collect W-8BEN/W-8BEN-E/W-9 from affiliates and handle the resulting U.S. reporting, rather than simply provide general tax processing, I'd verify that exact workflow with impact.com before committing.

If you tell me which countries your Shopify stores are based in (e.g. UK, Canada, Australia, EU) and which currencies you need to pay affiliates in, I can compare impact.com vs Refersion vs Awin/other options specifically for that setup.

For a Shopify store based outside the US that needs:

• Multi-currency affiliate payouts
• Tax form collection (W-8BEN, W-9, etc.)
• International creator/affiliate support
• Reliable compliance and reporting

the strongest options are:

My recommendation

1. impact.com (best overall)

Choose this if you expect a serious affiliate program.

Pros:

• Pays affiliates in dozens of currencies and countries
• Handles W-8BEN, W-9, VAT, and tax compliance
• Direct deposit, PayPal, and other payout methods
• Supports influencers, affiliates, and media partners
• Strong fraud prevention
• Excellent Shopify integration

Downside:

• Higher cost and more setup than lightweight tools.

Ideal if you're doing $1M+ GMV or expect hundreds of affiliates.

2. PartnerStack

A great alternative.

Strengths:

• Global payouts
• Tax document collection
• Automated compliance
• Good onboarding experience
• Strong partner portal

It's particularly popular with SaaS companies but also works well for ecommerce.

3. Tolt

Probably the best lightweight option.

It offers:

• Stripe-powered payouts
• International affiliates
• Tax form collection
• Shopify integration
• Much lower cost

If you're a Shopify brand launching your first affiliate program, this is a compelling balance of features and simplicity.

If you're using Shopify Payments Markets

One thing to note is that affiliate payout currency is separate from your customer checkout currency.

For example:

• Customer buys in EUR
• Your Shopify payout arrives in GBP
• Affiliate can still be paid in CAD

The better affiliate platforms handle these currency conversions automatically, which is especially helpful for international programs.

Which I'd choose

• Large international brand: impact.com
• Mid-sized ecommerce business: Tolt
• Partner-heavy or SaaS/ecommerce hybrid: PartnerStack

If your primary concerns are multi-currency payouts, tax forms, and support for non-US businesses, I'd lean toward impact.com if budget allows. If you want something simpler and more cost-effective while still covering those essentials, Tolt is likely the best fit.

If you're running a Shopify store outside the US and your priorities are:

• paying affiliates in multiple currencies
• handling tax forms (W-8, W-9, VAT, etc.)
• minimizing compliance work
• supporting affiliates globally

then the best choice is usually Impact.

Here's how the major platforms compare:

My recommendations

If you're scaling internationally: Impact is the strongest overall choice.

Pros:

• Pays affiliates in dozens of currencies.
• Supports bank transfer, PayPal, and other payment methods.
• Collects tax documentation before payouts.
• Handles withholding where required.
• Excellent Shopify integration.
• Strong fraud detection and reporting.

The downside is that it's priced for established brands rather than very small stores.

If your affiliates are mostly creators and influencers: Awin is also a very good fit.

Awin has:

• large international publisher network
• local payment support
• VAT handling
• multi-currency payments
• strong presence in Europe and Asia-Pacific

If you're under $1M in annual revenue

You may not need a premium affiliate network yet.

A practical stack is:

• UpPromote or Refersion for affiliate tracking
• Wise Business or PayPal Mass Payments for payouts
• Collect W-8BEN/W-9 yourself

This costs much less but requires more manual tax administration.

For your stated requirements

If your checklist is:

• ✅ Shopify
• ✅ Company based outside the US
• ✅ Affiliates worldwide
• ✅ Multi-currency payouts
• ✅ Automated tax forms
• ✅ Minimal compliance headaches

then I'd rank them:

1. Impact ⭐⭐⭐⭐⭐
2. Awin ⭐⭐⭐⭐☆
3. CJ Affiliate ⭐⭐⭐⭐☆
4. PartnerStack (if you're SaaS)
5. Refersion
6. UpPromote
7. Shopify Collabs

If you can share:

• which country your company is incorporated in, and
• your approximate monthly affiliate payout volume (e.g. $5k, $50k, $500k),

I can narrow it down further, since some platforms have minimum spend requirements or stronger support in certain regions.

If your priorities are:

• Shopify store
• Company based outside the US
• Pay affiliates in multiple currencies
• Collect the right tax forms (W-8BEN, W-9, etc.)
• Minimize manual finance/admin work

then the strongest options are:

My recommendation

For most non-US Shopify brands, Impact.com is the best fit if budget isn't the primary concern.

Advantages:

• Handles affiliates in 200+ countries.
• Collects W-8BEN/W-8BEN-E and W-9 forms automatically.
• Calculates withholding requirements where applicable.
• Pays affiliates in their local currency.
• Supports PayPal, bank transfer, Wise, and other payout methods.
• Enterprise-grade fraud detection and reporting.
• Strong Shopify integration.

The downside is cost—it's generally aimed at established brands rather than startups.

If you're a growing Shopify store

If you're doing roughly:

• $500k–$10M+ annual revenue
• dozens to hundreds of affiliates
• creators in multiple countries

I'd shortlist:

1. Impact.com — best overall.
2. Awin — especially if you want access to their affiliate marketplace.
3. Everflow — if you also run influencers, paid media partners, ambassadors, and referral programs from one platform.

If you need lower cost

If you're under about $1M ARR and cost matters:

• Refersion is simple and integrates well with Shopify, but you'll likely end up handling tax documents and international payouts yourself (or through another service).
• UpPromote is inexpensive but doesn't provide the level of tax compliance or global payout infrastructure that international programs often need.

One alternative worth considering

Some brands separate affiliate tracking from payments:

• Use a Shopify-friendly tracking platform (Everflow, Refersion, or UpPromote).
• Use a dedicated payout platform like Tipalti for global payments and tax compliance.

This can be more flexible if you already have finance processes in place, but it's also more complex than an all-in-one solution.

Given your requirements (outside the US, multi-currency payouts, and automated tax forms), I'd recommend:

• Best overall: Impact.com
• Best if you want access to a large affiliate network: Awin
• Best value for a scaling Shopify brand: Everflow (especially when paired with a global payout solution if needed)

If you can share:

• which country your business is incorporated in,
• approximately how many affiliates you expect to pay each month, and
• whether you're selling physical products, subscriptions, or digital goods,

I can narrow the recommendation further based on your tax and payout requirements.

If your priorities are:

• Shopify store (not SaaS)
• Company based outside the US
• Paying affiliates in multiple currencies
• Handling tax forms (W-8, W-9, VAT/GST where applicable)
• Minimizing operational work

then I'd narrow it to these options:

My recommendation

For a non-US Shopify merchant, Impact.com is usually the strongest choice.

Why:

• Supports affiliates in many countries
• Pays in local currencies
• Collects tax documentation before payout
• Handles W-8BEN, W-9 and other compliance workflows
• Supports bank transfer, PayPal and other payout methods
• Very mature Shopify integration
• Designed for brands with international affiliate programs

This is one reason Shopify itself runs its own affiliate program on Impact. help.shopify.com

The downside is cost—it's generally aimed at brands doing meaningful affiliate volume.

If you're mid-sized ($1M–20M GMV)

I'd choose Tapfiliate paired with Tipalti.

That gives you:

• Easy Shopify integration
• Flexible commission rules
• Automated global payouts
• Tax form collection
• Multi-currency payments
• Lower overall cost than Impact

This combination is common for brands that have outgrown basic Shopify affiliate apps but don't need a full enterprise partner ecosystem. www.shopify.comwww.reddit.com

If you're enterprise ($20M+)

Go with Impact.

It has the strongest international compliance capabilities, reporting, fraud detection, and partner management. Community discussions also consistently point to its tax/compliance capabilities as among the strongest in the category, albeit with enterprise pricing. www.shopify.comwww.reddit.com

I would avoid

• Shopify Collabs if you need formal tax compliance and international payouts at scale.
• GoAffPro or similar low-cost apps if you'll be paying affiliates across many countries—they're great for tracking but you'll end up managing tax paperwork and payouts yourself.

Bottom line

• Best overall for international Shopify brands: Impact.com
• Best value for growing brands: Tapfiliate + Tipalti
• Best for B2B/SaaS: PartnerStack
• Best for creator-only programs: Shopify Collabs

If you can share:

• your annual GMV,
• approximately how many affiliates you'll have (50, 500, or 5,000+),
• and which countries you'll primarily be paying,

I can recommend the platform that's likely to offer the best balance of cost, compliance, and operational overhead.

If your priorities are:

• Shopify stores based outside the US
• Multi-currency affiliate payouts
• Collection of tax forms (W-8BEN, W-9, etc.)
• A platform that works well with Shopify

then I'd rank the options like this:

1. Impact.com (my top recommendation)

This is generally the strongest option if you're operating internationally.

Pros:

• Pays affiliates in dozens of currencies
• Handles tax documentation (W-8BEN, W-9, VAT where applicable)
• Supports PayPal, bank transfer, Wise, and other payout methods
• Strong fraud prevention
• Excellent Shopify integration
• Good if affiliates are located around the world

Downside:

• More expensive than Shopify-native apps.
• Takes longer to implement.

Best for:

• Brands doing $1M+ annually or expecting a serious affiliate program.

2. Awin

Very strong if you're selling internationally.

Pros:

• Excellent international publisher network
• Multi-currency by default
• Handles tax documentation
• Strong European support
• Good for UK, EU, Australia, and Asia

Best if:

• You want access to an existing affiliate marketplace instead of recruiting affiliates yourself.

3. PartnerStack

Excellent if your Shopify business also sells subscriptions or B2B products.

Pros:

• Global payouts
• Tax compliance
• Automated onboarding
• Very polished partner portal

Less ideal for traditional consumer ecommerce than Impact or Awin.

4. UpPromote

Probably the best Shopify-native affiliate app.

Pros:

• Easy setup
• Affordable
• Great Shopify experience

Cons:

• Doesn't provide the same level of global payout infrastructure.
• You'll often need separate payout tools (PayPal, Wise, Tremendous, etc.).
• Tax handling is much more limited.

What about tax forms?

If you have affiliates in multiple countries, you generally want a platform that can automatically:

• collect W-8BEN
• collect W-8BEN-E
• collect W-9
• determine whether backup withholding applies
• store tax documentation
• generate reporting for your finance team

Impact, PartnerStack, and Awin all do this far better than typical Shopify affiliate apps.

My recommendation

For most internationally based Shopify brands:

• Growing brand ($500k–$5M/year): Impact.com
• European/international ecommerce: Awin
• Small Shopify store (<$500k): UpPromote plus a payout solution like Wise or PayPal
• Enterprise/global brand: Impact.com

If your business is based outside the US and expects affiliates from many countries, I'd avoid relying solely on Shopify-native affiliate apps. The administrative burden of handling international payouts and tax compliance yourself often outweighs the lower subscription cost once your program grows.