ChatGPT answers, unedited

For EU SaaS customers, I’d look for an affiliate platform that handles subscription lifecycle events (renewals, upgrades, downgrades, churn, refunds) and minimizes personal data processing. “GDPR-compliant” should mean more than having a checkbox: you’ll want a DPA, data-subject rights support, retention controls, subprocessor transparency, and privacy-friendly attribution. Selgeo Rekomi

Some platforms worth evaluating:

For an EU SaaS customer base, I would put these requirements in your vendor checklist:

• Data processing agreement (DPA) available and clear controller/processor roles
• EU data residency or documented international transfer mechanism (for example, SCCs where applicable)
• No customer PII passed to affiliates unless there is a clear lawful basis
• Server-side attribution via billing events/webhooks instead of relying only on cookies
• Affiliate self-service GDPR rights (export/delete requests)
• Configurable retention periods
• Audit logs for commission changes, payouts, and attribution decisions
• Refund, cancellation, downgrade, and upgrade handling for recurring SaaS revenue
• Subprocessor list and security documentation

A common architecture for EU SaaS is:

1. Billing system (e.g., Stripe Billing/Paddle) remains the source of truth.
2. Affiliate platform receives only required events (subscription ID, plan, commission-relevant amounts, affiliate ID).
3. Affiliate platform calculates commissions without exposing end-customer identity.
4. Payouts and tax workflows are handled separately with appropriate data minimization.

If you are building a multi-tenant affiliate solution for many SaaS customers (rather than choosing one tool for a single SaaS company), the shortlist changes because you’ll likely need white-label portals, tenant isolation, API access, and processor/subprocessor controls.

For an EU-facing SaaS affiliate program, I’d shortlist PartnerStack, Rewardful, and FirstPromoter. “GDPR-compliant” ultimately depends on how you configure tracking, consent, retention, contracts, and international transfers—not merely whether the vendor says it supports GDPR.

PartnerStack explicitly supports recurring commissions tied to subscriptions, renewals, and expansion revenue. Its documentation also describes GDPR/UK GDPR processing, SCCs for international transfers, encryption, access controls, and deletion/access mechanisms. PartnerStack PartnerStack PartnerStack

Rewardful is particularly interesting if you use Stripe. Its tracking connects referral-cookie information with Stripe customer records, and its trust documentation says it operates as both a controller and processor depending on the processing. It offers a DPA on request and documents technical/organizational measures and subprocessors. Rewardful

FirstPromoter supports recurring commissions triggered by billing events and integrates with Stripe, Paddle, Chargebee, Recurly and Braintree. FirstPromoter FirstPromoter

What I'd verify before signing

For EU customers, don't stop at the marketing-page “GDPR compliant” claim. Ask each vendor specifically about:

• DPA: Can you sign a GDPR Article 28 DPA?
• International transfers: Where are customer, affiliate, and end-user data stored/processed? Are SCCs and a transfer-impact assessment available?
• Cookie consent: Can affiliate attribution operate only after the appropriate consent, or can you use privacy-preserving server-side attribution?
• Data minimization: Can you avoid sending unnecessary customer PII to the affiliate platform?
• Deletion: Can you delete/anonymize an individual referred customer's data while retaining the accounting records legally required for commissions?
• Retention: Can retention periods be configured?
• Subprocessors: Is there a current subprocessors list and notification mechanism?
• Affiliate visibility: What customer information is exposed to affiliates? Ideally, affiliates should see commission/reporting data rather than identifiable end-customer data.
• EU payout/tax requirements: How are affiliate identity, VAT/tax information, and payout records handled?

If your architecture is Stripe + EU customers + recurring revenue, Rewardful and FirstPromoter are worth examining alongside PartnerStack. If you expect a more complex B2B partner/reseller ecosystem, PartnerStack has substantially more partner-management functionality. These are capability differences, not an overall ranking. FirstPromoter PartnerStack

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), approximate affiliate count, and whether you need cookie-free/server-side tracking, I can make a GDPR-focused feature matrix including DPA, SCCs, EU data residency, consent handling, recurring commissions, payout/tax handling, and pricing.

What I'd verify before signing

For EU customers, don't stop at the marketing-page “GDPR compliant” claim. Ask each vendor specifically about:

Yes. For an EU-focused SaaS affiliate program, I’d shortlist FirstPromoter, PartnerStack, and Rewardful—but they fit different scales and privacy requirements.

FirstPromoter is probably my first choice if you're primarily running an affiliate program rather than a large reseller/partner ecosystem. It supports recurring commissions based on customer lifetime, a defined time span, or number of charges, and integrates directly with Stripe, Paddle, Chargebee, Recurly and Braintree. FirstPromoter FirstPromoter

PartnerStack is stronger if you need enterprise partner management. It explicitly supports recurring commissions on subscriptions, renewals and expansion revenue, plus global payouts and compliance tooling. Its GDPR documentation includes a DPIA and describes its role as a data processor; its privacy documentation also addresses SCCs for international transfers. PartnerStack PartnerStack PartnerStack

Rewardful is attractive for a Stripe-based SaaS because its tracking and commission model is built around Stripe subscription data. Its Trust Center specifically addresses GDPR, DPAs, subprocessors and technical/organizational measures. One thing I'd verify contractually is the DPA: Rewardful says it is available on request rather than by default. Rewardful

One important GDPR caveat

Don't equate “GDPR-compliant platform” with a GDPR-compliant affiliate implementation. You still need to decide how you're handling:

• consent before affiliate cookies/tracking are placed;
• the lawful basis for each category of processing;
• data minimization—especially whether the affiliate platform actually needs customer-identifying data;
• deletion/access requests and retention periods;
• international transfers and SCCs;
• your affiliate/partner privacy notice and DPA;
• server-side or consent-aware attribution where possible.

My recommendation:

• Stripe + small/medium SaaS: FirstPromoter or Rewardful.
• B2B SaaS with agencies/resellers and a substantial partner ecosystem: PartnerStack.
• If privacy controls are the deciding criterion: I'd put PartnerStack and FirstPromoter through a DPA/subprocessor review before signing, rather than choosing based solely on their marketing claims.

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), approximate customer volume, and whether you need cookie-free/server-side attribution, I can narrow this to 1–2 platforms and compare their GDPR controls in detail.

One important GDPR caveat

Yes. For an EU-focused SaaS affiliate program, I’d shortlist FirstPromoter, Rewardful, and PartnerStack—but they fit different levels of complexity.

My recommendation: FirstPromoter

For a typical EU SaaS company, FirstPromoter looks like the strongest balance. It supports recurring commissions tied to subscription billing events, including renewals, upgrades, downgrades and cancellations, and integrates with Stripe, Paddle, Chargebee, Recurly and Braintree. FirstPromoter FirstPromoter

It also gives you more operational control than a basic affiliate tracker: custom domains, granular team permissions, activity logs, configurable attribution, fraud review and EU-compliant invoice generation. FirstPromoter FirstPromoter Docs

firstpromoter.com

If privacy/compliance is your primary concern

Rewardful has particularly explicit privacy documentation. It describes its GDPR role as both controller/processor depending on context, documents technical and organizational measures and subprocessors, and provides a DPA on request. Rewardful

One thing I'd verify before signing: where EU customer/affiliate personal data is stored and whether any transfers outside the EEA require SCCs, rather than assuming that "GDPR compliant" means EU-only processing.

rewardful.com

If you're enterprise/B2B

PartnerStack is the better candidate if you're building a substantial partner ecosystem rather than simply an affiliate program. It supports recurring commissions on renewals and expansion revenue, automated global payouts, and more sophisticated partner workflows. PartnerStack

Its privacy documentation explicitly addresses GDPR, international transfers and SCCs, and it publishes a DPIA describing its role as a processor under GDPR. PartnerStack PartnerStack

partnerstack.com

Bottom line: I'd choose FirstPromoter for most EU SaaS businesses, Rewardful if you're primarily Stripe/Paddle and want simplicity, and PartnerStack if you're operating an enterprise-scale B2B partner ecosystem.

One important caveat: the platform being GDPR-capable doesn't by itself make your affiliate program GDPR-compliant. Your implementation still needs an appropriate legal basis/consent approach for tracking cookies, a DPA, appropriate retention/deletion procedures, processor/subprocessor review, and a lawful international-transfer mechanism where applicable.

For EU SaaS customers, I’d prioritize platforms that are subscription-native, support recurring revenue commissions, and reduce GDPR exposure through server-side tracking, consent controls, EU data handling, and clear processor agreements (DPA/Art. 28).

A few strong candidates:

What I would check before signing

For GDPR compliance, don’t rely only on a vendor saying “GDPR compliant.” Verify:

• Data Processing Agreement (DPA) available and signed as needed
• Subprocessor list published
• Hosting location (EU hosting may simplify compliance, but is not automatically required)
• Lawful basis and consent handling for tracking
• Cookie-free/server-side attribution option
• Data minimization (does the platform really need customer emails, IPs, device IDs, etc.?)
• Deletion/export workflows for GDPR data subject requests
• Role-based access controls and audit logs
• SCCs/transfer mechanisms if data leaves the EEA

Shortlist by scenario

• EU SaaS + Stripe + privacy-first: Selgeo or Icodrip Selgeo Icodrip
• Need mature SaaS affiliate workflows: Partnero Partnero
• Need managed payouts and broader partner tooling: Rekomi Rekomi
• Enterprise-scale partner ecosystem: Trackdesk Trackdesk

For a typical EU B2B SaaS product using Stripe, I’d start by evaluating Selgeo, Partnero, and Icodrip because they align most closely with recurring subscription billing and privacy-conscious attribution. Selgeo Partnero Icodrip

I can also help build a comparison matrix against your requirements (EU hosting, Stripe/Paddle, SSO, SOC 2, DPA terms, self-hosting, pricing, etc.).

Yes. For an EU-facing SaaS, I’d shortlist FirstPromoter, Rewardful, and PartnerStack, with FirstPromoter looking like the strongest fit if GDPR/privacy controls are a primary requirement.

My recommendation: FirstPromoter

FirstPromoter is particularly interesting because its GDPR documentation explicitly says you can send only a customer UID rather than an email address for referral tracking. It also describes itself as a processor, offers a DPA, and has GDPR-compliant cookie/consent handling. FirstPromoter

For subscriptions, it supports commissions that continue for the customer lifetime, or recurring commissions limited by a number of months or charges. It integrates directly with Stripe, Paddle, Chargebee, Recurly, and Braintree, and adjusts commissions for upgrades, downgrades, refunds and cancellations. FirstPromoter FirstPromoter

Rewardful is the simpler alternative if you're heavily invested in Stripe. It supports recurring commissions, including commissions on every subscription invoice, and explicitly advertises GDPR compliance and customizable cookies. Rewardful Rewardful Help Center

PartnerStack is more enterprise/partner-management oriented. Its legal documentation includes a DPA, GDPR compliance commitments, SCCs for international transfers, and a DPIA describing its role as a processor. PartnerStack PartnerStack

One important caveat: “GDPR-compliant platform” doesn't make your affiliate implementation automatically GDPR-compliant. You'll still want to configure your lawful basis, cookie/consent mechanism, data minimization, retention, privacy notice, DPA/subprocessor review, and EU/international-transfer arrangements appropriately.

If I were choosing for an EU SaaS:
FirstPromoter → Rewardful → PartnerStack, in that order for a typical small/mid-market SaaS. If you're already on Stripe and want the lowest implementation complexity, I'd probably flip the first two.

For EU SaaS customers, I’d shortlist Rewardful, FirstPromoter, and PartnerStack. The best choice depends on whether you prioritize simple SaaS affiliate tracking or enterprise-grade privacy/partner management.

My pick

For most EU SaaS customers: FirstPromoter. It supports recurring commissions tied directly to billing events, including lifetime or capped recurring commissions, and integrates with Stripe, Paddle, Chargebee, Recurly and Braintree. FirstPromoter FirstPromoter

Its privacy/control story is also useful operationally: you can block, suspend, or archive promoters, with blocking stopping tracking and recurring commissions. FirstPromoter

Rewardful is the simpler alternative if your customers are predominantly Stripe-based. It supports recurring commissions on every eligible invoice and explicitly describes GDPR compliance and data-processing controls. Rewardful Help Center Rewardful

PartnerStack is stronger if these are larger B2B SaaS customers needing a full partner ecosystem. It supports recurring/expansion commissions and documents GDPR processes, DPA coverage and SCCs for EU data transfers. PartnerStack PartnerStack PartnerStack

One important caveat: “GDPR-compliant platform” doesn't by itself make your affiliate program GDPR-compliant. You still need to address your lawful basis for tracking, cookie consent where applicable, data minimization, processor agreements, retention/deletion, international transfers, and what customer data you send to the affiliate platform.

If you tell me Stripe vs Paddle vs Chargebee and roughly startup vs enterprise, I can narrow this to one platform and give you a GDPR-focused implementation checklist.

For EU SaaS customers, I’d prioritize an affiliate platform that is subscription-native, supports recurring revenue attribution, and minimizes GDPR exposure (especially around cookies, customer identifiers, and data processing agreements). A few platforms that fit this profile:

My shortlist for EU SaaS customers

1. Best privacy-first EU option: Selgeo

• Server-side attribution avoids many cookie-consent complications.
• EU data residency and GDPR tooling are central selling points. Selgeo
• Best established SaaS affiliate workflow: Partnero

• Strong SaaS orientation with recurring commissions, Stripe/Paddle support, and subscription lifecycle tracking. Partnero
• Best if customers have varied billing stacks: Rekomi

• Broader gateway support and automated payout workflows. Rekomi

GDPR checklist I would require before approving any vendor

• Data Processing Agreement (DPA) under GDPR Article 28
• Clear subprocessor list and hosting locations
• Ability to handle: - deletion requests
• data exports
• retention policies
• affiliate account removal
• Prefer server-side attribution over third-party cookies
• Avoid storing customer PII when only order/subscription IDs are needed
• Audit logs for commission changes and payouts
• EU-friendly payout/tax workflows

One important distinction: “GDPR compliant” is usually a vendor claim, not a certification. Your SaaS customers should still review the vendor’s DPA, subprocessors, and processing activities before deployment.

If your customers are mostly Stripe-based B2B SaaS companies, I would start evaluations with Selgeo, Partnero, and RefCampaign. If they need a more enterprise partner ecosystem rather than a lightweight affiliate program, the evaluation criteria would change.

Yes. For an EU-focused SaaS affiliate program, I’d shortlist Rewardful, FirstPromoter, and PartnerStack—but they fit different needs.

My recommendation

If you're a typical SaaS company using Stripe/Paddle: start with Rewardful. It supports recurring commissions directly against subscription invoices, including upgrades, downgrades and cancellations, and explicitly advertises GDPR compliance. Rewardful Help Center Rewardful Help Center Rewardful

FirstPromoter is probably the strongest alternative if you want more sophisticated commission structures. It can pay commissions for the customer's lifetime, a specified period, or a specified number of charges, and integrates directly with Stripe, Paddle, Chargebee, Recurly and Braintree. FirstPromoter FirstPromoter

PartnerStack is the one I'd investigate for enterprise EU customers. It is purpose-built for B2B SaaS, supports recurring/usage-based commissions and automated global payouts, and has explicit GDPR documentation, a DPA, SCC-based international transfer safeguards, and data-access/erasure procedures. One caveat: its current documentation says its subprocessors are located in the US, so EU data-transfer requirements should be reviewed with your counsel/DPO. PartnerStack PartnerStack PartnerStack

Important GDPR distinction

“GDPR compliant” doesn't mean you can automatically track EU visitors however you want. I'd specifically evaluate:

• Consent-aware cookie/referral tracking and whether tracking can work without non-essential cookies.
• Data minimization — ideally pass an affiliate/referral ID rather than unnecessary customer PII.
• DPA + subprocessors and where data is stored/processed.
• International transfers/SCCs if data leaves the EEA.
• Deletion/access workflows for referred customers and affiliates.
• Server-side attribution where possible, especially for subscription SaaS.

For a privacy-sensitive EU SaaS, Rewardful or FirstPromoter for simplicity; PartnerStack for enterprise-grade partner management would be my starting shortlist. Rewardful PartnerStack

If you tell me Stripe vs. Paddle, approximate affiliate count, and whether you need EU data residency, I can narrow this to one platform and compare their GDPR/DPA terms in detail.

PartnerStack is the one I'd investigate for enterprise EU customers. It is purpose-built for B2B SaaS, supports recurring/usage-based commissions and automated global payouts, and has explicit GDPR documentation, a DPA, SCC-based international transfer safeguards, and data-access/erasure procedures. One caveat: its current documentation says its subprocessors are located in the US, so EU data-transfer requirements should be reviewed with your counsel/DPO.

For EU SaaS customers, I’d prioritize platforms that handle subscription lifecycle events server-side, support recurring revenue commissions, and provide GDPR-related controls (DPA, EU data handling, deletion/export workflows, consent-friendly tracking). A few platforms that fit this profile:

My shortlist by scenario

• EU SaaS startup (Stripe, small team): Icodrip or Selgeo — simpler architecture, less dependence on browser cookies. Icodrip Selgeo
• Growing SaaS with partner operations: Trackdesk — broader affiliate management capabilities and integrations. Trackdesk
• Need Paddle/Braintree plus subscription logic: Rekomi is worth evaluating. Rekomi Rekomi

GDPR checklist before selecting

Ask vendors for:

• A signed Data Processing Agreement (DPA) under GDPR Article 28
• EU data residency options (if required by customers)
• Subprocessor list and transfer mechanisms (e.g., SCCs where applicable)
• Data deletion/export APIs or workflows
• Whether tracking works without third-party cookies
• Whether affiliate attribution IDs can be pseudonymized
• Audit logs for commission changes and payouts
• Clear separation of customer billing data from affiliate data

One important distinction: “GDPR compliant” is not a certification—the SaaS customer remains responsible for its own lawful basis, notices, contracts, and configuration. The platform should provide the controls needed to operate compliantly.

If this is for a multi-tenant SaaS platform where you provide affiliate programs to your customers, rather than choosing a tool for one SaaS company, the shortlist changes because you’ll likely need white-labeling, tenant isolation, API access, and reseller terms.

For EU SaaS customers, I would prioritize an affiliate platform that can handle subscription lifecycle events (renewals, upgrades, downgrades, refunds), minimize personal data collection, and support GDPR obligations such as DPA availability, deletion/export workflows, and EU-friendly data handling.

Platforms worth evaluating:

My shortlist for EU SaaS deployments

1. Best EU privacy-first option: Selgeo

• Strong fit if your customers specifically ask about GDPR, cookie consent, EU hosting, or DPAs. Selgeo
• Particularly attractive for Stripe-based SaaS.
• Best broader SaaS affiliate platform: Partnero

• Good if you need a more established SaaS affiliate workflow with subscription-aware commissions. Partnero
• Best for privacy-friendly attribution architecture: Rekomi or Icodrip

• Server-side tracking avoids many cookie-consent and browser-tracking issues. Rekomi Icodrip

GDPR checklist before choosing

Ask each vendor for:

• Data Processing Agreement (DPA) under GDPR Article 28
• Subprocessor list and hosting locations
• Data deletion/export mechanisms for affiliates and referred users
• Whether customer PII is stored (many privacy-friendly systems avoid this)
• Cookie consent impact and whether attribution works without marketing cookies
• Retention periods and audit logs
• SCCs/transfer mechanisms if any data leaves the EEA

For an EU SaaS marketplace or multi-tenant SaaS offering, I would generally avoid older cookie-heavy affiliate tools unless they can demonstrate a strong privacy architecture. A server-side, billing-webhook-based model is usually easier to defend in GDPR reviews. Selgeo Icodrip

For EU SaaS customers, I’d prioritize an affiliate platform that avoids unnecessary personal-data tracking, supports subscription lifecycle events, and can document GDPR responsibilities (DPA, subprocessors, deletion/export processes). A cookie-heavy affiliate tool can create problems under EU ePrivacy rules if it relies on consent-based tracking.

Here are platforms worth evaluating:

My shortlist for an EU SaaS rollout

1. Selgeo — strongest match if GDPR/privacy controls are the primary requirement. Its positioning is specifically around EU SaaS, server-side attribution, and avoiding cookie dependency. Selgeo
2. Partnero — good general-purpose SaaS affiliate platform if you need mature subscription tracking and integrations. Partnero
3. Icodrip — worth considering if your customers are Stripe/Paddle-based and want a simpler privacy-oriented setup. Icodrip Icodrip

GDPR checklist to validate before signing

Ask each vendor for:

• Data Processing Agreement (DPA) under GDPR Article 28
• Subprocessor list and hosting locations
• Whether affiliate tracking uses: - first-party cookies,
• third-party cookies,
• server-side events,
• hashed identifiers,
• customer email addresses or other personal data
• Support for: - deletion requests,
• data export requests,
• consent withdrawal,
• audit logs
• Ability to avoid sending end-customer PII to affiliates
• EU Standard Contractual Clauses (if data leaves the EEA)

For most EU SaaS customers, I would avoid choosing solely based on affiliate features; a server-side, billing-event-based model (Stripe/Paddle webhooks) is usually the cleaner architecture for GDPR and subscription attribution. Icodrip refcampaign.com

Yes. For an EU-focused SaaS affiliate program, I’d shortlist FirstPromoter, Rewardful, and PartnerStack. The important distinction is that “GDPR-compliant” is not something the platform alone guarantees—you still need the right lawful basis, cookie/consent setup, DPA, retention rules, and data-processing configuration.

My recommendation

FirstPromoter would be my first evaluation if you're building a conventional EU SaaS affiliate program. It natively handles recurring commissions across Stripe, Paddle, Chargebee, Recurly and Braintree, including commissions that continue for the customer's subscription lifetime or stop after a specified period/count. FirstPromoter FirstPromoter

Its controls also let you block or suspend a promoter's tracking, which can be useful when implementing privacy/consent or compliance processes. FirstPromoter

firstpromoter.com

Rewardful is particularly attractive if your SaaS is Stripe-centric. It can pay commissions on every recurring invoice and lets you cap the number of payments or months. Rewardful Help Center Rewardful Help Center Its trust documentation explicitly addresses GDPR, processing/controller roles and a DPA. One caveat: Rewardful says its DPA is available on request rather than automatically included, so I'd make obtaining and reviewing it part of procurement. Rewardful

rewardful.com

PartnerStack is the stronger choice if you're running a substantial B2B partner ecosystem rather than just an affiliate program. It supports recurring commissions tied to subscriptions, renewals and expansion revenue, and its legal documentation explicitly covers GDPR and EU transfers using Standard Contractual Clauses. PartnerStack PartnerStack Note that its current subprocessor documentation says its subprocessors are located in the US, so EU transfer mechanisms and your transfer-impact assessment deserve particular attention. PartnerStack

partnerstack.com

For EU GDPR, I'd require these before signing

• DPA with processor/subprocessor terms, including an up-to-date subprocessor list.
• EU international-transfer mechanism (e.g. SCCs where applicable) and information about where affiliate/customer data is stored.
• Ability to minimize the personal data sent to the platform—ideally pseudonymous customer/referral IDs rather than unnecessary customer identity data.
• Configurable cookie/attribution behavior, particularly whether affiliate cookies are placed before or only after consent where consent is required.
• Deletion/access workflows for affiliate and referred-customer data.
• Configurable retention periods rather than indefinite attribution data.
• Clear separation between your role as controller and the platform's processor/controller activities.
• Security measures, access controls and auditability.

Bottom line: For most EU SaaS companies, I'd start with FirstPromoter, choose Rewardful if you're heavily invested in Stripe/Paddle and want simplicity, and move to PartnerStack if you need an enterprise-grade B2B partner ecosystem.

If you tell me your stack (e.g. Stripe/Paddle + EU hosting + cookie-consent tool) and approximate customer/affiliate volume, I can narrow this to the best 1–2 options and compare their DPA, EU data transfers, cookies, deletion controls, and recurring-commission mechanics.

firstpromoter.com

Rewardful is particularly attractive if your SaaS is Stripe-centric. It can pay commissions on every recurring invoice and lets you cap the number of payments or months. Rewardful Help Center Rewardful Help Center Its trust documentation explicitly addresses GDPR, processing/controller roles and a DPA. One caveat: Rewardful says its DPA is available on request rather than automatically included, so I'd make obtaining and reviewing it part of procurement. rewardful.com

rewardful.com

PartnerStack is the stronger choice if you're running a substantial B2B partner ecosystem rather than just an affiliate program. It supports recurring commissions tied to subscriptions, renewals and expansion revenue, and its legal documentation explicitly covers GDPR and EU transfers using Standard Contractual Clauses. partnerstack.com partnerstack.com Note that its current subprocessor documentation says its subprocessors are located in the US, so EU transfer mechanisms and your transfer-impact assessment deserve particular attention.

For an EU-facing SaaS, I’d shortlist FirstPromoter and PartnerStack, with FirstPromoter looking like the better fit for a typical SaaS affiliate program.

My recommendation

Choose FirstPromoter if your requirement is essentially:

“We need an EU-friendly affiliate system that can pay recurring commissions while minimizing the personal data we expose to the affiliate platform.”

FirstPromoter explicitly supports recurring commissions based on subscription events such as renewals, upgrades, downgrades and cancellations, and supports Stripe, Paddle, Recurly, Chargebee and Braintree. FirstPromoter FirstPromoter

Its GDPR documentation is also unusually relevant to your use case: it says you can send a UID rather than the customer's email for sales tracking, and it provides a DPA and describes consent/cookie handling. FirstPromoter

PartnerStack is the stronger choice if you're building a more sophisticated B2B partner ecosystem. It supports recurring commissions, subscription/expansion revenue, server-to-server tracking and global payouts. Its published privacy materials specifically address GDPR, SCCs and its processor role. PartnerStack PartnerStack PartnerStack

One important caveat: “GDPR-compliant platform” doesn't make your affiliate program automatically GDPR-compliant. You'll still need to design consent, attribution cookies, privacy notices, processor agreements, data minimization, retention/deletion and international-transfer arrangements correctly.

If you tell me your billing stack (e.g. Stripe/Paddle), approximate customer/affiliate volume, and whether you're doing B2C or B2B SaaS, I can narrow this to 2–3 platforms and compare their GDPR/DPA, EU data residency, cookie-consent model, recurring commission rules, and pricing.

For EU SaaS customers, I would prioritize an affiliate platform that handles subscription lifecycle data (renewals, upgrades, refunds, churn) while minimizing personal data collection and avoiding reliance on third-party cookies. A few platforms worth evaluating:

What to check for GDPR compliance

A platform being “GDPR compliant” in marketing material is not enough. For EU SaaS customers, verify:

• Data Processing Agreement (DPA) under GDPR Article 28
• Subprocessor list and ability to notify of changes
• EU data residency (if required by customers)
• Server-side attribution rather than browser-only cookies
• Cookie consent impact (affiliate attribution should not break when marketing cookies are rejected)
• Data minimization: - avoid sending customer names/emails to affiliates
• prefer order IDs, subscription IDs, and commission records
• Deletion/export workflows for GDPR access and erasure requests
• Security controls: - encryption at rest/in transit
• access controls
• audit logs

Shortlist recommendation

For an EU SaaS customer base, I would usually start evaluations with:

1. Selgeo — strongest match if the priority is EU-first, Stripe-native, privacy-conscious SaaS affiliate tracking. Selgeo
2. Partnero — good balance of SaaS recurring commissions and partner management features. Partnero
3. Trackdesk — better if enterprise customers need formal security/compliance documentation. Trackdesk
4. Rekomi — attractive if affiliates include creators, agencies, or broader partner channels. Rekomi

If your SaaS stack is Stripe-only, I would narrow the comparison around Stripe webhook handling, EU hosting, DPA terms, and whether the platform ever receives customer PII. If you use Paddle, Chargebee, Lemon Squeezy, or custom billing, the integration matrix becomes more important.

For EU SaaS customers, I would prioritize server-side attribution, EU data processing options, DPA availability, data minimization, deletion/export controls, and recurring subscription commission logic rather than traditional cookie-based affiliate tools.

A few platforms worth evaluating:

My shortlist for EU SaaS

1. Most privacy-forward architecture:

Selgeo — its approach avoids browser-cookie dependency by attributing through server-side Stripe events, which can reduce reliance on consent-based tracking flows. Selgeo

2. Best general SaaS affiliate platform:

Partnero or Rekomi — better if you need partner portals, multiple commission models, and mature SaaS workflows. Partnero Rekomi

3. Best if EU data residency is a deciding factor:

RefCampaign or Selgeo — both emphasize European handling of affiliate program data. RefCampaign Selgeo

GDPR checklist before signing

Ask the vendor for:

• Data Processing Agreement (DPA) under GDPR Article 28
• List of subprocessors and their locations
• Whether affiliate tracking uses: - cookies,
• fingerprinting,
• local storage,
• server-side events/webhooks
• Ability to: - delete affiliate data,
• export affiliate data,
• handle DSAR requests
• Data retention periods
• EU/EEA hosting options
• Whether customer PII is stored (ideally: avoid storing customer identity data)
• Audit logs for commission changes and payouts
• Role-based access controls

For a typical EU B2B SaaS company running Stripe subscriptions, I would lean toward a server-side Stripe-native platform with recurring commissions rather than a legacy cookie affiliate network. The final choice usually comes down to whether you need enterprise partner management or a privacy-first lightweight affiliate engine. Selgeo Partnero

For an EU-facing SaaS affiliate program, I’d shortlist FirstPromoter, Rewardful, and PartnerStack. The important distinction is that “GDPR compliant” is not a turnkey legal status for your program—you still need the right lawful basis, cookie/consent setup, DPA, retention rules, and processor/subprocessor review.

My pick: FirstPromoter

FirstPromoter explicitly supports lifetime recurring commissions, with commission calculations tied to renewals, upgrades, downgrades, cancellations and reactivations. It also supports Stripe, Paddle, Chargebee and other subscription billing systems. FirstPromoter FirstPromoter

Its GDPR documentation is particularly relevant to your requirement: it describes data-subject access, deletion, objection, portability and rectification mechanisms, says it can provide a DPA, and discusses consent-controlled tracking cookies. It also says it can minimize customer tracking data by using a UID rather than an email address. FirstPromoter

firstpromoter.com

When I'd choose the others

Rewardful is attractive if you're heavily invested in Stripe. Its architecture connects referral tracking with Stripe customer/subscription data, and it documents GDPR-related technical/organizational measures and DPA availability. Rewardful

rewardful.com

PartnerStack is the stronger choice if you're building a substantial B2B partner channel rather than simply an affiliate program. It supports recurring commissions on subscriptions, renewals and expansion, and publishes both a GDPR statement and a DPIA describing its processor role. PartnerStack PartnerStack PartnerStack One caveat for EU customers: its documentation says its platform/subprocessors are US-based and relies on SCCs for relevant transfers, so your DPA/transfer assessment deserves careful review. PartnerStack

partnerstack.com

Bottom line: for a normal EU SaaS with Stripe/Paddle subscriptions, I'd start with FirstPromoter, then Rewardful. If you need enterprise-grade partner management, tiers, resellers and a larger ecosystem, look at PartnerStack.

One thing I'd verify during procurement: whether affiliate cookies/tracking can be disabled until consent and whether you can run attribution using first-party/server-side identifiers instead. That's often more important for GDPR compliance than the platform's marketing claim of being “GDPR compliant.”

Yes. For an EU-focused SaaS affiliate program, I’d shortlist FirstPromoter, Rewardful, and PartnerStack, but they fit different needs.

My recommendation: FirstPromoter

firstpromoter.com is probably the best balance for an EU SaaS company. It explicitly supports recurring commissions tied to renewals, upgrades, downgrades, cancellations and reactivations, with integrations for Stripe, Paddle, Recurly and Chargebee. FirstPromoter FirstPromoter

Its GDPR documentation is also unusually specific: it describes consent handling, limiting customer tracking data to an identifier where possible, data-subject access/deletion/portability rights, and providing a DPA. FirstPromoter

When I'd choose the others

Rewardful is attractive if your customers primarily use Stripe. It supports recurring commissions and documents GDPR controls, subprocessors and technical/organizational measures. One caveat: its DPA is stated to be available on request, rather than automatically. Rewardful Rewardful

PartnerStack is the stronger enterprise option. It supports recurring/usage-based commissions, renewals and expansion revenue, S2S/CRM tracking, and global payouts. Its GDPR documentation includes a DPIA and SCC-based transfer safeguards. However, its current privacy documentation says its platform/subprocessors are hosted in the U.S., so I'd involve your privacy counsel/DPO in the transfer assessment for EU customers. PartnerStack PartnerStack PartnerStack

Bottom line: if you're building a standard EU SaaS affiliate program today, I'd start with FirstPromoter; choose Rewardful for a lean Stripe-native setup, or PartnerStack if you need a full enterprise partner ecosystem.

One important distinction: “GDPR-compliant platform” doesn't make your affiliate implementation automatically GDPR-compliant. You still need to determine your lawful basis for tracking, configure consent/cookies appropriately, minimize identifiers sent to the platform, establish controller/processor roles, and document international transfers where applicable.

Yes. For an EU-focused SaaS affiliate program, I’d shortlist FirstPromoter, Rewardful, and PartnerStack—but they fit different stages.

My recommendation

FirstPromoter is probably the best balance if your SaaS is selling subscriptions to EU customers. It can calculate commissions from renewals, upgrades, downgrades, cancellations and reactivations, and supports recurring/lifetime commissions. It also offers configurable clawbacks and payout thresholds. FirstPromoter FirstPromoter

firstpromoter.com

Rewardful is particularly attractive if you're on Stripe. It supports recurring commissions and has a documented GDPR/privacy program, including a DPA on request and documented subprocessors. Rewardful Rewardful

rewardful.com

PartnerStack is the strongest choice if you expect a larger B2B ecosystem involving affiliates, agencies, resellers and other partner types. It explicitly supports recurring commissions and has published GDPR/DPIA documentation, DPA terms and SCC-based international transfer safeguards. One caveat for EU privacy architecture: its published documentation says its platform is hosted in the U.S. and its current subprocessors are U.S.-based. PartnerStack PartnerStack PartnerStack

partnerstack.com

One important GDPR distinction

"GDPR compliant" doesn't mean you can automatically drop an affiliate cookie on every EU visitor. You still need to design your attribution/tracking architecture, lawful basis, consent/CMP behavior, data minimization, retention, DPA/subprocessor terms, and international-transfer mechanism appropriately. PartnerStack, for example, explicitly documents processing of click IDs, IP addresses, user agents and referring URLs, so those details should be reviewed in your DPIA rather than treating the platform as a compliance shortcut. PartnerStack

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), SaaS size, and whether you need cookie-less attribution, I can narrow this to one platform and compare the GDPR/privacy architecture in detail.

Yes. For EU SaaS customers, I’d shortlist FirstPromoter and PartnerStack, with FirstPromoter looking like the better fit if you primarily need an affiliate/referral program rather than a full partner ecosystem.

My pick: FirstPromoter

For your specific requirement, FirstPromoter is probably the strongest balance. It supports recurring commissions tied directly to billing events, including renewals and plan changes, and supports Stripe, Paddle, Chargebee, Recurly and Braintree. It also offers server-to-server postbacks, configurable attribution/cookie windows, fraud controls, team permissions, and EU invoicing. FirstPromoter FirstPromoter

The privacy architecture matters more than simply having a “GDPR compliant” badge. For EU customers, I'd specifically configure it to minimize personal-data collection and prefer server-side/billing-based attribution where possible rather than relying exclusively on third-party/browser cookies.

When I'd choose PartnerStack

If your customers are larger B2B SaaS companies with affiliates + agencies + resellers + referral partners, PartnerStack becomes more compelling. It explicitly supports recurring commissions for subscriptions, renewals and expansion revenue, and publishes a DPIA covering GDPR/UK GDPR processing. PartnerStack PartnerStack

One important caveat

“GDPR-compliant platform” doesn't automatically make your affiliate implementation GDPR-compliant. You still need to establish the controller/processor roles, DPA, lawful basis for tracking, cookie/consent behavior, retention/deletion procedures, international-transfer safeguards, and what customer identifiers you send to the affiliate platform.

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.) and whether you need cookie-less/server-side attribution, I can narrow this to the best 2–3 options and compare their EU data-processing terms.

For an EU-focused SaaS affiliate program, I’d shortlist Rewardful, FirstPromoter, and PartnerStack. They all support recurring SaaS commissions, but they differ substantially on privacy and program complexity.

My pick

Rewardful would be my first evaluation if your requirements are primarily:

• EU customers
• SaaS subscriptions
• recurring affiliate commissions
• Stripe or Paddle billing
• minimizing the customer data affiliates can see
• relatively simple implementation

Its privacy model is particularly attractive: affiliates don't receive customer names or email addresses by default, and Rewardful uses an anonymous identifier instead. Rewardful Help Center

If you're building a larger B2B partner channel rather than a straightforward affiliate program, I'd move PartnerStack to the top. It supports recurring and expansion commissions and has much more extensive contractual/privacy infrastructure. PartnerStack PartnerStack

One important caveat: “GDPR-compliant platform” doesn't automatically make your affiliate program GDPR-compliant. You still need to address the lawful basis for tracking, cookie/consent requirements where applicable, your controller/processor roles, DPAs, international transfers, retention/deletion, affiliate disclosures, and what customer data gets sent to the platform.

For an EU SaaS deployment, I'd specifically ask each vendor for its current DPA, subprocessors list, EU/EEA data-transfer mechanism, deletion/DSAR procedure, cookie/consent behavior, and whether customer identifiers can be kept pseudonymous before signing.

Yes. For EU SaaS customers, I’d shortlist PartnerStack, Rewardful, and FirstPromoter, but they differ quite a bit on privacy/compliance depth.

My recommendation

If GDPR/privacy is the primary buying criterion: PartnerStack. It has the most comprehensive public compliance documentation I've found. Its DPA explicitly covers processing on behalf of customers, and its documentation addresses GDPR rights such as access, export and erasure. It also documents SCCs for EU data transfers and has a formal DPIA. PartnerStack PartnerStack PartnerStack

It also explicitly supports recurring commissions tied to subscription renewals and expansion revenue, which is particularly appropriate for SaaS. PartnerStack

If your customers are mostly smaller Stripe-based SaaS companies: Rewardful is probably the better practical choice. It supports recurring commissions on every subscription invoice, with the ability to cap the number of payments/months. Rewardful Help Center Rewardful Help Center Its Trust Center documents GDPR-oriented processing controls and a DPA, although notably the DPA is described as available on request rather than automatically included. Rewardful

One important GDPR caveat

“GDPR compliant” on the vendor's website doesn't by itself make your affiliate program GDPR-compliant. For an EU SaaS deployment, I'd require the platform to give you:

• A signed Article 28 DPA and current subprocessor list.
• Clear controller/processor roles for affiliate, prospect, and customer data.
• EU transfer mechanism (SCCs where applicable) and transfer-risk documentation.
• Data deletion/access/export mechanisms.
• Configurable cookie/attribution behavior so affiliate tracking doesn't automatically rely on non-essential cookies before the required consent.
• Data minimization—ideally passing an affiliate/referral ID rather than unnecessary customer PII.
• Retention/deletion periods for click, attribution and affiliate data.
• Controls for affiliates' access to customer information.
• Audit/security documentation.

Bottom line: PartnerStack for enterprise-grade EU compliance; Rewardful for a simpler, Stripe-centric SaaS implementation; FirstPromoter for maximum affiliate-program customization. I would make the DPA + subprocessor/transfer terms a procurement gate rather than choosing solely on the vendor's “GDPR compliant” badge.

If GDPR/privacy is the primary buying criterion: PartnerStack. It has the most comprehensive public compliance documentation I've found. Its DPA explicitly covers processing on behalf of customers, and its documentation addresses GDPR rights such as access, export and erasure. It also documents SCCs for EU data transfers and has a formal DPIA. docs.partnerstack.com partnerstack.com partnerstack.com

It also explicitly supports recurring commissions tied to subscription renewals and expansion revenue, which is particularly appropriate for SaaS. partnerstack.com

If your customers are mostly smaller Stripe-based SaaS companies: Rewardful is probably the better practical choice. It supports recurring commissions on every subscription invoice, with the ability to cap the number of payments/months. Its Trust Center documents GDPR-oriented processing controls and a DPA, although notably the DPA is described as available on request rather than automatically included.

One important GDPR caveat

Yes. For an EU-facing SaaS, I’d shortlist FirstPromoter, Rewardful, and PartnerStack, but they fit different levels of complexity.

My recommendation

Start with FirstPromoter if you're a normal subscription SaaS and want recurring affiliate revenue without buying an enterprise PRM. It supports Stripe, Paddle, Chargebee, Recurly and Braintree, and lets you tie commissions to actual billing events rather than merely signup. It also supports server-to-server postbacks, configurable attribution and role-based access. FirstPromoter FirstPromoter

Rewardful is compelling if you're entirely on Stripe and want the simplest implementation. Its Trust Center explicitly addresses GDPR, processor/controller responsibilities, subprocessors and technical/organizational measures. One caveat: its DPA is described as available on request, so I'd get that signed before processing EU customer/affiliate data. Rewardful

PartnerStack is the stronger choice if "affiliate" is really the beginning of a broader B2B partner program. It supports recurring/expansion commissions and automated global payouts, and its published DPIA specifically addresses GDPR, data transfers, processor status and SCCs. PartnerStack PartnerStack

Important GDPR distinction

No affiliate platform is automatically "GDPR-compliant" merely because the vendor says so. For EU customers, I'd require:

• A DPA with clear controller/processor roles.
• Documented subprocessors and international-transfer mechanism (e.g. SCCs where applicable).
• A way to minimize the customer data sent to the affiliate system—ideally pseudonymous IDs rather than names/emails.
• Server-side/S2S attribution where possible, rather than relying exclusively on third-party cookies.
• Configurable retention/deletion and assistance with data-subject requests.
• Clear consent/legal-basis handling for any non-essential affiliate cookies.
• Contractual restrictions preventing affiliates from receiving unnecessary customer PII.

That last point matters: GDPR compliance is as much about how you configure the integration as which platform you buy.

If you tell me whether you're on Stripe, Paddle, Chargebee, or something else, and roughly whether you're SMB, mid-market, or enterprise, I can narrow this to the best 1–2 choices and compare their DPA, EU data transfers, cookie/S2S tracking, recurring commission rules, and pricing.

PartnerStack is the stronger choice if "affiliate" is really the beginning of a broader B2B partner program. It supports recurring/expansion commissions and automated global payouts, and its published DPIA specifically addresses GDPR, data transfers, processor status and SCCs.

Important GDPR distinction

No affiliate platform is automatically "GDPR-compliant" merely because the vendor says so. For EU customers, I'd require:

Yes. For an EU-focused SaaS affiliate program, I’d shortlist FirstPromoter, Rewardful, and PartnerStack.

My recommendation: FirstPromoter

FirstPromoter is particularly interesting for your requirement because its GDPR implementation explicitly addresses affiliate tracking: you can pass a UID without the customer's email, it provides mechanisms for access, erasure, portability and rectification, and it supports marketing-consent and affiliate privacy/terms checkboxes. FirstPromoter

It also handles recurring billing events, including upgrades, downgrades, refunds and cancellations. FirstPromoter

firstpromoter.com

If you're on Stripe/Paddle: Rewardful

Rewardful is probably the easiest implementation. Recurring commissions are the default, and you can limit them to a particular number of payments or months. Rewardful Help Center Rewardful Help Center It also advertises customizable cookies and GDPR compliance. Rewardful

One caveat: its DPA is available on request rather than automatically provided, according to its trust center, so I'd get that contractual paperwork reviewed before committing for EU enterprise customers. Rewardful

rewardful.com

For a larger B2B program: PartnerStack

PartnerStack is the stronger choice if this is more than a basic affiliate program—e.g. agencies, resellers, technology partners, and affiliates all need to coexist. It supports recurring commissions tied to renewals and expansion revenue, plus automated global payouts and tax handling. PartnerStack

Its GDPR documentation covers data-subject rights, DPAs and international transfers using SCCs. One thing to examine carefully is its current subprocessor/data-transfer architecture: PartnerStack says its subprocessors are currently located in the US. PartnerStack PartnerStack

partnerstack.com

Bottom line: If your priority order is EU privacy controls → recurring SaaS commissions → reasonable implementation complexity, I'd start with FirstPromoter. If you're already deeply invested in Stripe/Paddle and want the simplest deployment, Rewardful is compelling. If you're building a substantial B2B partner ecosystem, choose PartnerStack.

One important distinction: “GDPR compliant” by the vendor doesn't make your affiliate program automatically GDPR compliant. You'll still need to configure consent/cookie behavior, establish your controller/processor roles and DPA, document the lawful basis for tracking, and handle data-subject requests appropriately.

Yes. For an EU-facing SaaS, I’d shortlist FirstPromoter, Rewardful, and PartnerStack, with FirstPromoter looking like the strongest fit if GDPR/privacy controls are a primary requirement.

My pick: FirstPromoter

firstpromoter.com supports recurring commissions natively, including lifetime recurring commissions and time- or charge-limited arrangements. It also integrates with Stripe, Paddle, Chargebee, Recurly and Braintree. FirstPromoter FirstPromoter

More importantly for your EU requirement, FirstPromoter explicitly documents GDPR handling: it can track sales using a customer UID without sending the customer's email, provides mechanisms for access, deletion, rectification and portability, and offers a DPA. It also documents consent handling for referral cookies. FirstPromoter

firstpromoter.com

When I'd choose the others

Rewardful is attractive if you're entirely on Stripe. It supports recurring commissions on every invoice and automatically adjusts commissions for upgrades, downgrades, cancellations and trials. Its trust center describes GDPR practices and a DPA, although the DPA is available on request. Rewardful Help Center Rewardful

rewardful.com

PartnerStack makes more sense if you're building a substantial B2B partner ecosystem rather than a straightforward affiliate program. It supports recurring/usage-based commissions and automated global payouts, while its privacy documentation explicitly addresses GDPR/UK GDPR and its processor role. PartnerStack PartnerStack

partnerstack.com

One important caveat: “GDPR-compliant platform” doesn't make your affiliate implementation automatically GDPR-compliant. You'll still need to configure your consent mechanism, cookie/attribution behavior, privacy notice, lawful basis, data-retention rules, DPA/subprocessor review, and deletion workflows appropriately.

If you tell me whether your SaaS uses Stripe, Paddle, Chargebee, or another billing system, I can narrow this to the best 2–3 options and compare their EU data residency, DPA/SCC terms, cookie-consent model, deletion API, and pricing.

Yes. For an EU-facing SaaS, I’d shortlist FirstPromoter, Rewardful, and PartnerStack, with FirstPromoter looking like the strongest fit if privacy controls are a major requirement.

My pick: FirstPromoter

FirstPromoter explicitly supports lifetime recurring commissions and can adjust commissions as subscriptions renew, upgrade, downgrade, cancel or reactivate. It integrates with Stripe, Paddle, Chargebee, Recurly and Braintree. firstpromoter.com

Its GDPR implementation is particularly relevant to your use case: you can pass a UID rather than an email address, it documents the personal data it stores, supports data-access/deletion/portability requests, provides a DPA, and offers marketing-consent and affiliate privacy/terms checkboxes. firstpromoter.com

FirstPromoter

When I'd choose the others

Rewardful is attractive if you're heavily Stripe-centric and want something relatively lightweight. It supports subscription-based recurring commissions and has documented GDPR controls, subprocessors and technical/organizational measures. Its DPA is available on request. www.rewardful.compartnerstack.com

Rewardful

PartnerStack makes more sense if "affiliate" is really becoming a broader B2B partner ecosystem—agencies, resellers, referral partners, etc. It supports recurring/expansion commissions and global payouts, while its GDPR documentation includes SCCs for international transfers. partnerstack.com

PartnerStack

Important caveat: "GDPR-compliant platform" doesn't automatically make your affiliate implementation GDPR-compliant. You still need to establish the controller/processor roles, lawful basis, cookie/consent behavior, retention, DPA/subprocessor review, international-transfer mechanism, and how affiliate tracking is handled before signup.

If you tell me Stripe vs Paddle/Chargebee, approximate customer volume, and whether you need cookie-free/server-side attribution, I can narrow this to the best 1–2 options and compare their privacy architecture.

Yes. For an EU-facing SaaS affiliate program, I’d shortlist FirstPromoter and PartnerStack, with Rewardful as a lighter-weight option.

My pick: FirstPromoter

For your specific combination of EU customers + recurring SaaS commissions + privacy controls, FirstPromoter looks like the strongest balance.

Its GDPR implementation is unusually explicit: it can track referrals using a UID without necessarily transmitting the customer's email, supports cookie consent, provides data-access/erasure/portability mechanisms, and offers a DPA. It also lets you add an affiliate privacy/terms agreement and marketing-consent controls to promoter signup. firstpromoter.com

Its recurring commission model is also flexible enough for SaaS: customer lifetime, a specified number of months, or a specified number of charges, with different commission rates over the customer lifecycle. help.firstpromoter.com

Choose PartnerStack instead if you're building a broader B2B partner ecosystem—e.g. affiliates + agencies + resellers + referral partners—and need enterprise-grade partner management and payout workflows. partnerstack.com

One important caveat: “GDPR-compliant platform” doesn't make your affiliate program automatically GDPR-compliant. You'll still need to establish the appropriate controller/processor arrangements, configure consent/cookie behavior, minimize customer data sent to the platform, document your lawful basis, and handle international data transfers appropriately.

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), approximate affiliate count, and whether you need EU-only data residency, I can narrow this to the best 1–2 options and compare their DPAs, subprocessors, tracking model, and pricing.

Yes. For an EU-focused SaaS, I’d shortlist FirstPromoter, PartnerStack, and Rewardful, but they fit different needs.

My pick: FirstPromoter. It explicitly supports recurring billing events and adjusts commissions for upgrades, cancellations and refunds. Its GDPR implementation also lets you control marketing consent and affiliate privacy/terms acceptance, and it can track signups using a UID without necessarily sending the customer's email. firstpromoter.com

FirstPromoter

Choose PartnerStack if you're building a substantial B2B partner ecosystem rather than just an affiliate program. It supports recurring/expansion commissions and has considerably more enterprise partner-management functionality. Its GDPR documentation includes a DPIA and SCC safeguards, although its current subprocessor disclosure says those subprocessors are in the US, so EU data-transfer requirements deserve particular attention. partnerstack.com

PartnerStack

Rewardful is attractive if you're Stripe-native and want something lightweight. It processes referral information through its tracking cookie and Stripe integration, and documents GDPR-oriented processing/security measures and a DPA. www.rewardful.com

Rewardful

One important GDPR caveat

Don't equate "GDPR-compliant platform" with "GDPR-compliant implementation." You still need to determine your lawful basis for affiliate tracking, configure your cookie/consent mechanism appropriately, minimize customer data sent to the affiliate platform, document the processor relationship/DPA, and handle data-subject rights.

If your requirements are EU SaaS + recurring revenue share + minimal personal data + strong consent/privacy controls, I'd rank them:

1. FirstPromoter → 2. PartnerStack → 3. Rewardful.

If you tell me whether you use Stripe, Paddle, or Chargebee and roughly how many affiliates/customers you expect, I can narrow this to the best two and compare their EU data residency, DPA/SCC terms, cookie behavior, pricing, and recurring-commission mechanics.

Yes. For an EU-facing SaaS, I’d shortlist FirstPromoter, PartnerStack, and Rewardful—but they fit different scales and privacy requirements.

My recommendation

FirstPromoter is probably the strongest middle-ground choice if your requirement is specifically “recurring affiliate commissions + privacy controls for EU customers.” It supports recurring commissions tied to subscription billing events, configurable attribution, clawbacks, and payout controls. firstpromoter.com

If you're an enterprise B2B SaaS and need a broader partner/affiliate ecosystem, PartnerStack is more compelling. It explicitly documents its role as a GDPR/UK GDPR processor and provides a DPIA covering tracking data, cookies, click IDs, IP addresses, and related processing. partnerstack.com It also supports recurring commissions and billing integrations such as Stripe and Chargebee. partnerstack.comwww.rewardful.com

Rewardful is attractive if you're already on Stripe and want something lightweight. It automatically handles recurring commissions and subscription changes, while its trust documentation covers GDPR, subprocessors, technical/organizational measures, and DPAs. www.rewardful.com

Important GDPR caveat: “GDPR-compliant platform” doesn't by itself make your affiliate program GDPR-compliant. You still need to determine your lawful basis for tracking, handle consent/cookies where required, establish controller/processor roles, configure data minimization/retention, and make sure your DPA/subprocessor and international-transfer arrangements work for your EU customers.

If privacy is the deciding criterion, I'd rank them PartnerStack → FirstPromoter → Rewardful. If ease + Stripe-native recurring commissions is the deciding criterion, I'd reverse that toward Rewardful/FirstPromoter.

Yes. For an EU-focused SaaS, I’d shortlist FirstPromoter, Tapfiliate, and PartnerStack, with FirstPromoter probably the best balance of recurring commissions and SaaS billing flexibility.

My pick: FirstPromoter

FirstPromoter is particularly strong if your customers are subscription SaaS companies. It tracks renewals, upgrades, downgrades, cancellations and reactivations, and lets you configure commissions by billing event, period, or lifetime. It supports Stripe, Paddle, Recurly, Chargebee and Braintree. firstpromoter.com

FirstPromoter

Tapfiliate is the one I'd look at if GDPR documentation is your primary selection criterion. It explicitly says it is GDPR compliant, acts as a processor, offers a DPA, and documents encryption, access controls, audit logs and separation of tracking/personal data. It also supports recurring/lifetime commissions, including native recurring tracking for Stripe. support.tapfiliate.com

Tapfiliate

PartnerStack makes more sense when you're building a serious B2B partner ecosystem rather than simply adding affiliate links. It supports recurring and usage-based commissions, renewals/expansions, S2S/CRM tracking, and global payouts with tax/VAT handling. Its published DPIA specifically addresses GDPR processing and the tracking data it handles. partnerstack.com

PartnerStack

One important GDPR caveat

Don't equate “GDPR-compliant platform” with your entire affiliate implementation being GDPR compliant. You still need to assess:

• whether affiliate cookies require consent in each target EU jurisdiction;
• what personal data is sent to the platform;
• processor/subprocessor arrangements and DPAs;
• international data transfers and applicable safeguards;
• retention/deletion periods;
• whether you can operate attribution without unnecessary IP/device data;
• DSAR/deletion handling across your affiliate platform.

For an EU SaaS product, I'd therefore make DPA + subprocessors + hosting/data-transfer location + cookie/consent behavior mandatory procurement checks, rather than choosing solely on the affiliate feature list.

Bottom line: FirstPromoter for the best SaaS/recurring-commission combination; Tapfiliate if GDPR/privacy documentation is especially important; PartnerStack if you're operating at B2B/enterprise partner-program scale. support.tapfiliate.comwww.rewardful.com

Yes. For an EU-facing SaaS, I’d shortlist FirstPromoter, Rewardful, and PartnerStack—but they fit different levels of complexity.

My pick: FirstPromoter

For your specific requirement—EU SaaS customers + recurring commissions + privacy controls—FirstPromoter looks like the cleanest match.

It supports recurring commissions for the customer lifetime, a defined number of months, or a fixed number of charges. It also integrates directly with Stripe, Paddle, Chargebee, Recurly and Braintree. help.firstpromoter.com

More importantly for GDPR, FirstPromoter explicitly documents:

• DPA availability and processor status
• data-subject access, deletion, rectification and portability
• consent handling for tracking
• the ability to send a pseudonymous uid rather than the customer's email for sales tracking
• cookie-consent mechanisms
• documented subprocessors and their DPAs firstpromoter.comhelp.rewardful.compartnerstack.com

That last point is particularly useful if your privacy architecture is "don't send affiliate tooling more customer PII than necessary."

FirstPromoter GDPR documentation

When I'd choose the others

Rewardful is compelling if you're exclusively on Stripe. It calculates commissions from paid invoices and automatically adjusts them for upgrades, downgrades, cancellations and trials. Its trust center documents GDPR/CCPA practices and a DPA. help.rewardful.com

Rewardful Trust Center

PartnerStack makes more sense if you're building a substantial B2B partner ecosystem rather than simply an affiliate program. It supports recurring commissions on renewals and expansion, automated global payouts, and has formal DPA/DPIA documentation addressing GDPR processing. partnerstack.com

PartnerStack Data Processing Addendum

Bottom line:

• Small/mid-market SaaS + strong GDPR requirements → FirstPromoter
• Stripe-only + simplest implementation → Rewardful
• Enterprise B2B partner ecosystem → PartnerStack

One caveat: "GDPR-compliant platform" doesn't automatically make your affiliate program GDPR-compliant. You'll still need to establish your lawful basis, cookie/consent behavior, controller/processor roles, data minimization, retention, international-transfer safeguards, and appropriate disclosures in your own privacy documentation.

Yes. For an EU-facing SaaS, I’d shortlist FirstPromoter, Rewardful, and PartnerStack—but they fit different needs.

My recommendation: FirstPromoter

FirstPromoter is probably the strongest match if GDPR controls are a first-class requirement rather than just a checkbox.

It explicitly documents GDPR compliance and says you can pass only a customer uid rather than an email for sales/commission tracking. It also provides a DPA and describes consent handling for referral tracking. www.firstpromoter.com

On the commercial side, it supports one-time, recurring/lifetime, tiered and plan-specific commissions, with billing-event tracking for renewals, upgrades, downgrades, cancellations and reactivations. firstpromoter.com

Rewardful is a close second

Rewardful is particularly attractive if you're already on Stripe. Its architecture is centered on Stripe subscription data, and it advertises recurring commissions, refund handling, customizable cookies and GDPR compliance. www.rewardful.com

Its trust documentation also covers GDPR, DPAs, subprocessors and technical/organizational measures. One caveat: its DPA is available on request rather than by default, so I'd get that paperwork before procurement. www.rewardful.com

PartnerStack for enterprise programs

PartnerStack is more of a full partner-management platform. It supports recurring commissions tied to renewals/expansion, global payouts, tax handling and integrations with Stripe/Chargebee. partnerstack.com

Its GDPR documentation is substantial, including a DPA, SCCs and a DPIA. However, PartnerStack says its platform and information are hosted in the US, with EU transfers protected through SCCs. partnerstack.com If your customers have stringent EU data-residency requirements, that's worth scrutinizing.

Bottom line:

• Privacy + SaaS flexibility → FirstPromoter
• Stripe + easiest implementation → Rewardful
• Enterprise B2B partner ecosystem → PartnerStack

One important distinction: “GDPR-compliant platform” doesn't make your affiliate program automatically GDPR-compliant. You'll still need to configure lawful-basis/consent handling, cookie behavior, your privacy notice, processor arrangements, retention/deletion processes, and international-transfer safeguards appropriately.

If you tell me Stripe vs. Paddle/Chargebee, approximate affiliate volume, and whether EU data residency is mandatory, I can narrow this to one choice and compare the relevant DPAs/subprocessors and privacy controls.

Yes. For an EU-facing SaaS, I’d shortlist FirstPromoter and Rewardful, with PartnerStack if you need enterprise-grade partner management.

My pick: FirstPromoter. It has unusually explicit privacy controls for an affiliate platform: you can avoid transmitting an email and use a UID for referred customers, it provides mechanisms for access/erasure/rectification/portability requests, and it supports affiliate privacy/terms consent. Its tracking also distinguishes anonymous visitor tracking from identifiable customer data. firstpromoter.com

It also supports recurring commissions and adjusts commissions as subscriptions renew, upgrade, downgrade, cancel, or refund. firstpromoter.com

Rewardful is a very good alternative if all your billing runs through Stripe. It natively tracks recurring commissions and subscription lifecycle changes. Its trust documentation says it supports GDPR obligations and offers a DPA, though the DPA is available on request rather than automatically. www.rewardful.com

PartnerStack is the choice I'd investigate for an enterprise SaaS with affiliates plus resellers/referral partners. It supports recurring subscription/renewal commissions and has a formal GDPR DPIA/DPA/SCC framework, although its documented processing involves US-hosted infrastructure and international transfers. partnerstack.com

One important caveat: "GDPR-compliant platform" doesn't make your affiliate implementation automatically GDPR-compliant. You still need to configure your consent mechanism, cookie/tracking behavior, privacy notice, lawful basis, processor contracts, retention, and data-subject-request workflow appropriately.

If you tell me Stripe vs Paddle/Chargebee, approximate customer volume, and whether you need affiliate-only or full partner management, I can narrow this to the best 1–2 options and compare their EU data transfers, DPA/SCCs, cookie consent, deletion APIs, and pricing.

Yes. For an EU-focused SaaS affiliate program, I’d shortlist FirstPromoter, Rewardful, and PartnerStack. The best fit depends on whether you prioritize privacy minimization, ease of deployment, or a larger partner-management platform.

My pick: FirstPromoter

FirstPromoter is particularly compelling for your requirements. It explicitly supports lifetime recurring commissions, time-limited recurring commissions, and commissions based on a fixed number of charges. help.firstpromoter.com

More importantly for EU customers, FirstPromoter lets you minimize the personal data you send to it: its documentation says you can use a UID instead of an email address for referral tracking. It also supports GDPR data-subject rights, including access, deletion, rectification and portability, and offers a DPA. www.firstpromoter.com

Rewardful is the strongest alternative

Rewardful is attractive if you're primarily on Stripe. Its affiliate interface normally exposes an anonymous unique customer identifier rather than names or email addresses, and customer-name visibility can be controlled at the campaign level. help.rewardful.com It supports recurring commissions directly in campaign configuration. help.firstpromoter.comhelp.rewardful.comdocs.partnerstack.compartnerstack.com

One caveat: Rewardful's DPA is available on request rather than automatically by default, so I'd make obtaining and reviewing the DPA part of procurement. www.rewardful.com

PartnerStack if you're building a serious partner channel

PartnerStack is more of a full B2B partner platform than a lightweight affiliate tracker. It supports recurring commissions for renewals/expansion, event-based commissions, and global payouts. partnerstack.com It also has explicit GDPR documentation and contractual DPA provisions. docs.partnerstack.com

However, PartnerStack's current privacy policy says its subprocessors are located in the US and that EU/Swiss transfers use Standard Contractual Clauses, so your EU data-transfer assessment should explicitly cover that arrangement. partnerstack.com

Bottom line:

• Privacy/data minimization first → FirstPromoter
• Stripe + straightforward affiliate program → Rewardful
• Enterprise B2B partner ecosystem → PartnerStack

One important distinction: “GDPR-compliant platform” doesn't automatically make your affiliate implementation GDPR-compliant. You'll still need to establish your controller/processor roles, lawful basis, cookie/consent behavior, retention periods, affiliate privacy notice, DPA/SCC requirements where applicable, and what customer data is actually sent to the platform.

If you tell me your billing stack (Stripe/Paddle/etc.), approximate ARR/customer count, and whether affiliate tracking must work without consent cookies, I can narrow this to the best 1–2 options and compare their actual privacy architecture.

For an EU-facing SaaS affiliate program, I’d shortlist FirstPromoter, PartnerStack, and Rewardful. None makes your entire affiliate program “GDPR compliant” automatically—you still need the right lawful basis, cookie/consent setup, privacy notices, DPAs, retention rules, and data-subject processes.

My pick: FirstPromoter

FirstPromoter is particularly compelling for your requirements because it explicitly supports recurring commissions and has unusually specific GDPR controls. It can track using a customer uid rather than necessarily passing an email, offers marketing-consent controls for promoter signup, supports an affiliate privacy/terms checkbox, and provides mechanisms for access, deletion, rectification, objection, and portability. It also offers a DPA and says it has DPAs with its subprocessors. firstpromoter.com

FirstPromoter's GDPR documentation

When I'd choose PartnerStack instead

If you're running a larger B2B SaaS partner program rather than just an affiliate/referral program, PartnerStack is more enterprise-oriented. It supports recurring revenue from subscriptions, renewals and expansion, plus flexible commission models and global payouts. Its privacy documentation explicitly addresses GDPR, processor status, DPIAs and international transfers using SCCs. partnerstack.com

PartnerStack's GDPR/DPIA documentation

One caveat: PartnerStack says its current subprocessors are located in the US, so EU data-transfer implications deserve particular attention in your DPA/transfer-impact assessment. partnerstack.compartnerstack.com

Rewardful

Rewardful is attractive if your billing is primarily Stripe. Its architecture connects referral tracking to Stripe customer records and subscription purchase data, and it describes itself as both a data controller and processor with GDPR/CCPA safeguards. Its DPA is available on request rather than automatically. www.rewardful.com

Rewardful Trust Center

Bottom line:

• FirstPromoter → my recommendation if GDPR controls + flexible recurring commissions are the priorities.
• PartnerStack → choose it if you need enterprise partner management and a broader B2B ecosystem.
• Rewardful → choose it if you're Stripe-heavy and want the simplest implementation.

One important architectural point: don't assume an affiliate platform's GDPR claim means you can drop consent management. If your referral mechanism places non-essential tracking cookies before consent, you may still have EU ePrivacy/cookie-consent obligations independent of the platform's GDPR posture.

If you tell me whether you're on Stripe, Paddle, or Chargebee and roughly how many affiliates/customers you expect, I can narrow this to the best 1–2 options and compare their EU data residency, DPA/SCC terms, cookie behavior, deletion APIs, and recurring-commission mechanics.

Yes. For an EU-facing SaaS affiliate program, I’d shortlist FirstPromoter, Rewardful, and PartnerStack—but they fit different scales.

FirstPromoter can track recurring charges and supports Stripe, Paddle, Chargebee, Recurly and Braintree. Its commission engine allows lifetime or capped recurring commissions. help.firstpromoter.com

Rewardful is probably the simplest choice for a Stripe/Paddle-based SaaS: it advertises GDPR compliance, customizable cookies, automated refund handling, and privacy-related controls alongside recurring subscription attribution. www.rewardful.com

PartnerStack is the strongest candidate if you're building a larger EU B2B partner ecosystem. It supports recurring/usage-based commissions and has a published GDPR/UK GDPR DPIA describing its role as a processor for customers. partnerstack.com

My recommendation

• Startup / mid-market SaaS + Stripe: Rewardful
• Need sophisticated commission rules: FirstPromoter
• Enterprise / many affiliates, resellers and partners: PartnerStack

One important caveat: “GDPR compliant” on the vendor's website doesn't make your affiliate program GDPR-compliant by itself. You still need to establish the appropriate controller/processor relationships, DPA, lawful basis for tracking, cookie/ePrivacy consent where required, data minimization/retention, international-transfer safeguards, and a way to honor data-subject rights.

If privacy controls are a hard requirement, I'd make the vendor evaluation specifically ask for: DPA, subprocessors list, EU/EEA hosting options, SCCs/transfer mechanism, deletion/export APIs, cookie-less/server-side attribution, retention periods, and whether affiliate identifiers are personal data.

For an EU-focused SaaS affiliate program, I’d shortlist FirstPromoter, Rewardful, and PartnerStack—but they fit different needs.

My recommendation: FirstPromoter

FirstPromoter is particularly well suited to subscription SaaS. It supports recurring commissions for the customer lifetime, a specified time period, or a fixed number of charges, and integrates directly with Stripe, Paddle, Chargebee, Recurly, and Braintree. help.firstpromoter.com

If GDPR/privacy controls are the deciding factor, I'd put PartnerStack ahead of it for a larger EU operation. PartnerStack explicitly documents its role as a processor and has a GDPR/UK GDPR-focused DPIA covering partner tracking and commission processing. partnerstack.com

PartnerStack

If you're Stripe-based

Rewardful is worth serious consideration. It ties attribution directly to Stripe billing events, handles upgrades, downgrades, cancellations and recurring invoices, and lets you limit recurring commissions by number of payments or months. help.rewardful.com

Important GDPR caveat: no affiliate platform is automatically "GDPR compliant" simply because the vendor says it is. For EU customers, I'd specifically verify:

• DPA with appropriate processor/controller roles
• EU/EEA hosting and/or lawful international transfer mechanism
• Cookie/consent behavior for affiliate tracking
• Ability to avoid unnecessary PII in attribution
• Data deletion/access mechanisms
• Subprocessor list
• Retention periods
• Whether attribution can work with server-side/payment-event tracking rather than relying entirely on marketing cookies

If you tell me whether your SaaS uses Stripe, Paddle, Chargebee, or another billing system, I can narrow this to the best 2–3 options and compare their GDPR/DPA, cookie consent, EU data residency, recurring commission, and pricing side-by-side.

For an EU-facing SaaS affiliate program, I’d shortlist FirstPromoter, Rewardful, and PartnerStack. The important distinction is that “GDPR-compliant” is not a property you can simply inherit from the platform—you still need the right consent, lawful basis, disclosures, retention, and processor arrangements for your own implementation.

FirstPromoter is probably the one I'd evaluate first. It natively supports recurring commissions through Stripe, Paddle, Chargebee, Recurly and Braintree, and lets you choose lifetime, time-based, or count-based recurring payouts. help.firstpromoter.com

Rewardful is particularly attractive if your customers are heavily Stripe-based. It supports recurring commissions on subscription invoices, and its trust documentation explicitly addresses GDPR and data-processing arrangements. One caveat: its DPA is currently described as available on request rather than by default, so I'd make obtaining and reviewing that DPA part of procurement. help.rewardful.com

PartnerStack is the stronger choice if you need a serious partner ecosystem rather than just affiliate tracking. Its current privacy documentation explicitly addresses GDPR and international transfers using SCCs, although its listed subprocessors are currently in the US, so EU data-transfer implications deserve particular scrutiny. partnerstack.com

One important GDPR caveat

For EU SaaS customers, I'd specifically require the platform to support:

• Consent-aware tracking rather than automatically dropping affiliate cookies before consent where consent is required.
• A way to avoid unnecessary personal data in affiliate URLs/events.
• Deletion/access workflows for referred customers and affiliates.
• A signed DPA and transparent subprocessors.
• Clear international-transfer mechanisms (e.g. SCCs where applicable).
• Configurable retention periods.
• Documentation explaining whether the platform acts as your processor, independent controller, or both, depending on the data flow.

So my recommendation would be:

FirstPromoter → best balance of recurring SaaS commissions + flexibility
Rewardful → best if you're deeply integrated with Stripe
PartnerStack → best if enterprise partner management/discovery matters more than simplicity

If you're building this as a platform for your EU SaaS customers rather than choosing an affiliate tool for your own SaaS, I'd assess these somewhat differently—the data-controller/processor architecture becomes much more important.

For EU SaaS customers, I’d shortlist platforms that are subscription-native, support recurring commissions, and provide the operational controls needed for GDPR (DPA, data processing transparency, consent-aware tracking, deletion/access workflows). No affiliate platform makes you “GDPR compliant” by itself—you still need correct consent flows, privacy notices, processor agreements, and lawful tracking configuration—but some are much better aligned.

My practical recommendation by customer profile

1. EU SaaS startup / SMB

• Pick FirstPromoter or Rewardful.
• Look for:
  • Stripe/Paddle integration
  • server-side conversion tracking where possible
  • configurable cookie duration
  • affiliate data export/deletion workflows
  • a signed Data Processing Agreement (DPA) before processing EU personal data

2. Mid-market B2B SaaS with agencies, resellers, and partners

• Consider PartnerStack.
• It is more of a partner relationship management platform than a simple affiliate tracker, with workflows for partner onboarding, commissions, and payouts. partnerstack.com

GDPR checklist for an affiliate setup

Regardless of platform, verify that you have:

• ✅ A Data Processing Agreement with the affiliate vendor
• ✅ Clear controller/processor roles documented
• ✅ Cookie consent before non-essential affiliate tracking cookies fire (where required)
• ✅ Privacy policy language covering:
  • affiliate attribution
  • cookies/identifiers
  • partner data sharing
  • retention periods
• ✅ Ability to honor GDPR rights:
  • access
  • deletion
  • correction
  • objection
• ✅ EU-friendly payout/tax handling for affiliates

If your SaaS stack is Stripe + EU customers + recurring subscriptions, my default shortlist would be FirstPromoter vs Rewardful, with PartnerStack if you need a larger partner ecosystem rather than just affiliate tracking. www.rewardful.comfirstpromoter.com

Yes. For an EU-focused SaaS affiliate program, I’d shortlist FirstPromoter and PartnerStack, with FirstPromoter looking like the better fit if privacy controls and recurring SaaS commissions are the priorities.

My pick: FirstPromoter

FirstPromoter explicitly documents GDPR compliance, including data-subject access, deletion, rectification and portability, and offers a DPA. It also supports consent-aware referral tracking and says it can minimize customer data by using a customer UID rather than an email address for sales attribution. firstpromoter.com

For the commercial side, it supports recurring/lifetime commissions and tracks subscription events such as renewals, upgrades, downgrades, cancellations and reactivations. It integrates with Stripe, Paddle, Chargebee, Recurly and Braintree. firstpromoter.com

FirstPromoter

When I'd choose PartnerStack

PartnerStack is stronger if you're building a large B2B partner ecosystem rather than simply an affiliate program. It supports commissions tied to subscriptions, renewals and expansion revenue, and its privacy documentation explicitly addresses GDPR/UK GDPR and its processor role. partnerstack.com

PartnerStack

Important GDPR caveat

Don't treat "GDPR-compliant platform" as meaning your affiliate implementation is automatically GDPR-compliant. You still need to decide, among other things:

• whether affiliate cookies/tracking require prior consent in your EU markets;
• what personal data you send to the platform;
• your controller/processor roles and DPA;
• retention/deletion periods;
• how affiliates can exercise data-subject rights;
• international transfers/subprocessors;
• whether you can attribute commissions using a pseudonymous customer ID instead of email.

If your requirements are specifically "EU SaaS + recurring revenue + minimize personal data + strong consent/privacy controls," I'd start with FirstPromoter. If you tell me your billing stack (Stripe, Paddle, Chargebee, etc.) and approximate affiliate volume, I can narrow it down further and compare FirstPromoter vs PartnerStack vs Rewardful on GDPR/DPA, EU data residency, cookies, recurring commission rules, and pricing.

If your customers are EU SaaS companies, you should distinguish between:

1. Affiliate platform capabilities (recurring commissions, payouts, attribution)
2. Your own GDPR compliance (consent, lawful basis, data minimization, retention, processor agreements)

No affiliate platform can make your program "GDPR compliant" on its own—you'll still need appropriate consent flows where required, a privacy notice, data processing agreements (DPAs), and controls over cookies and tracking.

For SaaS with recurring subscriptions, these platforms are the strongest candidates:

The main GDPR features to look for include:

• A signed Data Processing Agreement (DPA).
• Hosting and subprocessors that meet GDPR requirements.
• Data export and deletion APIs to support data subject rights.
• Configurable cookie duration.
• First-party tracking where possible.
• Ability to disable unnecessary tracking.
• IP anonymization or minimized personal data collection where supported.
• Audit logs and role-based access controls.

My recommendations

For startups and SMB SaaS

• Rewardful is one of the strongest choices if you're already on Stripe or Paddle. It was designed around recurring subscription revenue rather than one-time ecommerce commissions. www.rewardful.comfirstpromoter.com

For mid-market and enterprise B2B SaaS

• PartnerStack stands out if you need partner management beyond simple affiliates. It supports recurring subscription commissions, flexible commission events, automated global payouts, and is designed for SaaS partner ecosystems. partnerstack.com

For teams wanting maximum commission flexibility

• FirstPromoter is a strong option if you expect complex commission rules (tiers, lifetime attribution, subscription events) without the cost of an enterprise platform. www.rewardful.comfirstpromoter.com

Privacy architecture I'd recommend for EU customers

Rather than relying solely on affiliate cookies:

• Use your CMP to obtain consent before setting affiliate tracking cookies where required.
• Prefer first-party cookies over third-party cookies when possible.
• Tie recurring commissions to billing events (Stripe/Paddle webhooks) instead of long-lived tracking cookies.
• Minimize stored personal data (affiliate ID + customer ID is often sufficient).
• Set retention limits and automated deletion policies.
• Make affiliate tracking disclosures clear in your privacy notice.

This approach reduces reliance on persistent tracking while still supporting recurring subscription commissions.

If your SaaS is built around Stripe, I'd shortlist Rewardful, FirstPromoter, and PartnerStack. If you're selling to larger European enterprises with partner programs, PartnerStack is typically the strongest fit. For most startups and growth-stage SaaS companies, Rewardful or FirstPromoter usually provide the best balance of recurring commission support, implementation speed, and privacy controls.

If your priorities are GDPR compliance for EU customers, recurring SaaS commissions, and strong privacy controls, I'd focus on platforms that are designed for subscription businesses rather than generic affiliate networks.

What to look for beyond "GDPR compliant"

Many vendors advertise GDPR compliance, but for EU SaaS customers I'd verify that they support:

• Server-side or first-party tracking instead of relying solely on third-party cookies.
• Integration with your Consent Management Platform (Cookiebot, OneTrust, CookieYes, etc.).
• No affiliate tracking before user consent where consent is required.
• Configurable data retention.
• Data Processing Agreement (DPA).
• Clear documentation on international data transfers.
• Support for deletion and data subject requests (DSARs).
• Audit logs for affiliate activity.

If you're using Stripe

The strongest options today are:

• FirstPromoter if you want mature SaaS functionality with flexible recurring commission rules.
• AFFY.PRO if GDPR and consent handling are your biggest concerns.
• RefCampaign if accurate commission calculations across renewals, upgrades, downgrades, and refunds are critical. firstpromoter.com

If you want maximum privacy

Consider platforms that use server-side attribution rather than browser cookies. This generally:

• reduces dependence on consent-sensitive tracking,
• avoids ad blocker issues,
• improves attribution accuracy for subscription businesses,
• simplifies compliance compared with traditional cookie-based affiliate tracking (though GDPR obligations still apply where personal data is processed). icodrip.com

My recommendation

For most EU SaaS businesses:

1. FirstPromoter — best overall balance of recurring commission management and SaaS features.
2. AFFY.PRO — best if GDPR/privacy is the primary purchasing criterion.
3. PartnerStack — if you're an enterprise business that also wants access to a partner marketplace.
4. RefCampaign — excellent if accurate subscription lifecycle and refund handling matter more than marketplace features. firstpromoter.com

If you can share:

• your billing platform (Stripe, Paddle, Chargebee, Lemon Squeezy, etc.),
• where you host customer data (EU only or global),
• and roughly how many affiliates you expect (10, 100, or 1,000+),

I can narrow this to the best fit for your architecture and compliance requirements.

If your priorities are GDPR compliance for EU customers, recurring SaaS commissions, and strong privacy controls, I'd narrow the field to SaaS-focused platforms rather than general affiliate networks.

For a GDPR-conscious SaaS, I'd look for these capabilities regardless of vendor:

• Server-side or consent-aware tracking instead of relying solely on third-party cookies.
• Recurring commission logic tied to billing events (renewals, upgrades, downgrades, refunds, churn).
• Consent Management Platform (CMP) integration with tools like Cookiebot or OneTrust.
• Data Processing Agreement (DPA) and clear processor/controller documentation.
• EU data hosting (or at least transparent international transfer mechanisms).
• Data deletion APIs to satisfy GDPR data subject requests.
• Minimal personal data collection, ideally using pseudonymous identifiers where practical.

If your SaaS uses a subscription billing platform, integration matters just as much:

• Stripe: FirstPromoter, AFFY.PRO, RefCampaign, Icodrip all integrate natively. affy.pro
• Paddle: FirstPromoter, AFFY.PRO, Rekomi, Icodrip support it. affy.pro
• Chargebee/Recurly: FirstPromoter and Rekomi have broader subscription platform support. firstpromoter.comaffy.prorekomi.com

For most EU SaaS companies:

• Best overall: FirstPromoter if you want a mature SaaS affiliate platform with sophisticated recurring commission handling.
• Best privacy-first option: AFFY.PRO if GDPR compliance and consent-aware tracking are your highest priorities.
• Best if you're Stripe-only: RefCampaign offers a streamlined, subscription-focused experience with European infrastructure.

One important note: no affiliate platform can make your program "GDPR compliant" by itself. Your implementation also needs an appropriate lawful basis for processing, a configured CMP where consent is required, an updated privacy notice, and a signed DPA with the vendor. The platform should support those obligations, not replace them.

If your customers are EU-based SaaS companies, you should evaluate affiliate platforms on both commercial features (recurring commissions, billing integrations) and privacy architecture (consent-aware tracking, data processing, and GDPR controls). "GDPR compliant" isn't just a checkbox—the implementation matters.

Here's how the leading options compare:

For GDPR, look for these capabilities

A platform should support:

• Consent-aware tracking (no marketing cookies until consent)
• Server-side attribution where possible
• Data Processing Agreement (DPA)
• User deletion and data export APIs
• Configurable retention periods
• Support for consent withdrawal
• Integration with a Consent Management Platform (CMP) such as Cookiebot or OneTrust
• Minimal collection of personal data and documented international transfer safeguards if applicable. track360.io

If recurring commissions are critical

For SaaS, ensure the platform handles:

• Monthly and annual subscriptions
• Upgrades and downgrades
• Refunds and chargebacks
• Churn stopping future commissions
• Multi-currency payouts
• Stripe, Paddle, or Chargebee integration

Those capabilities prevent overpaying affiliates as subscription states change. affy.pro

Recommendations by company size

• Best overall for EU-first SaaS: AFFY.PRO — strongest emphasis on consent-first tracking and recurring subscriptions. affy.protrack360.iotrack360.io
• Best for Stripe-only SaaS: Rewardful — mature recurring commission handling and straightforward setup. track360.io
• Best for flexible commission logic: FirstPromoter — strong support for recurring revenue, upgrades, and churn scenarios. track360.iotrack360.io
• Best for partner recruitment: PartnerStack — combines affiliate management with a large partner marketplace. www.reddit.comtrack360.io

One important note: no affiliate platform can make a program "GDPR compliant" on its own. Your implementation still needs a lawful basis for processing, a CMP if consent is required, appropriate privacy notices, a DPA with the vendor, and processes for data subject rights. The platform should support those requirements rather than work around them. track360.io

If you can share your billing stack (e.g. Stripe, Paddle, Chargebee, Lemon Squeezy), expected number of affiliates, and whether you need an affiliate marketplace or only tracking software, I can narrow this to the best one or two options.

If your priorities are (1) recurring SaaS commissions and (2) GDPR/privacy compliance for EU customers, I'd narrow the shortlist to platforms that support subscription billing events while minimizing privacy risk.

For an EU-focused SaaS, I'd evaluate these capabilities beyond the marketing claims:

• Consent-aware tracking: Affiliate cookies or identifiers should not be set before valid consent where required under GDPR/ePrivacy.
• Server-side event tracking: Better resilience and can reduce reliance on browser cookies.
• Recurring subscription attribution: Handles renewals, upgrades, downgrades, refunds, and churn correctly.
• Data minimization: Ability to avoid storing unnecessary personal data and configure retention periods.
• DSR support: Processes for deletion/export requests and documentation for GDPR obligations.
• DPA availability: A signed Data Processing Agreement and transparency around subprocessors.

If you're using common SaaS billing platforms:

• Stripe: Rewardful, FirstPromoter, and AFFY.PRO all integrate well. track360.iowww.reddit.comaffy.pro
• Paddle: Rewardful, Tapfiliate, and AFFY.PRO have native support. track360.iowww.reddit.comaffy.pro
• Chargebee: AFFY.PRO supports it directly. affy.pro

One important compliance note: using a "GDPR-compliant" affiliate platform alone does not make your affiliate program GDPR compliant. You'll also need an appropriate consent management platform (CMP), a lawful basis for processing, an updated privacy notice, and a correctly configured implementation so affiliate tracking respects users' consent choices. track360.io

If you can share:

• your billing platform (Stripe, Paddle, Chargebee, Lemon Squeezy, etc.),
• your approximate MRR or affiliate volume, and
• whether you need an affiliate marketplace (to recruit partners) or just affiliate management,

I can recommend the best-fit platform for your setup.