ChatGPT answers, unedited

For B2B SaaS with long trials, sales-assisted conversion, and recurring revenue, I’d narrow it to PartnerStack vs. Rewardful.

My pick: PartnerStack for your funnel

PartnerStack is the stronger choice if your funnel looks like:

affiliate click → signup/trial → demo → opportunity → contract → subscription → renewals/expansion

It explicitly supports full-funnel attribution, CRM-integrated/S2S tracking, event-based commissions, and recurring commissions tied to renewals and expansion. That makes it much better suited to B2B where the affiliate click and the eventual payment can be separated by weeks or months. partnerstack.com

The downside is cost and complexity: you're buying a partner ecosystem/PRM, not just lightweight affiliate tracking. It's overkill if you're basically running Stripe subscriptions with a straightforward trial-to-paid funnel.

Rewardful if you're Stripe-native

Rewardful is what I'd choose for an earlier-stage SaaS where the critical requirement is:

affiliate → trial → Stripe customer → recurring invoices

It has unusually deep Stripe integration and automatically handles trials, upgrades, downgrades, cancellations, refunds and recurring commissions. www.rewardful.com

The important distinction is that Rewardful is primarily customer/revenue attribution, whereas PartnerStack is much more capable of pipeline/deal-stage attribution.

How I'd choose

One thing I'd not optimize for is the cookie window alone. With a long B2B funnel, you want the affiliate identity persisted into your lead/contact/account and ultimately the billing record, rather than relying on a browser cookie surviving for months.

Rule of thumb: if you can describe your funnel as “click → signup → Stripe subscription,” use Rewardful. If you describe it as “click → lead → MQL → opportunity → closed-won → recurring revenue,” use PartnerStack.

If you tell me your trial length, CRM (HubSpot/Salesforce/etc.), billing system (Stripe/Chargebee/etc.), and whether affiliates introduce leads or directly drive signups, I can tell you which one I'd deploy and how I'd structure the attribution model.

For a B2B SaaS with long trials + multi-step funnels, I’d narrow it to FirstPromoter vs. PartnerStack, with Rewardful as the simpler Stripe-centric option.

My pick: FirstPromoter

firstpromoter.com is probably the best fit if you’re founder-led and want reliable attribution without building an affiliate ops team.

Why:

• Long trial support: it tracks the referral at the lead/signup stage, then connects that lead to the eventual billing event. Its default referral cookies last 60 days and can be adjusted. FirstPromoter Docs
• Multi-step funnels: you don't have to treat "click → immediate purchase" as the conversion. Referral tracking can be associated with a captured lead, with the eventual sale coming from your billing system. FirstPromoter Docs
• Billing-confirmed commissions: FirstPromoter's server-side sales tracking means commissions are generated from actual billing events rather than relying on a browser conversion pixel. FirstPromoter Docs
• Recurring revenue: it handles renewals, upgrades, downgrades, cancellations and reactivations, with configurable lifetime or time-limited recurring commissions. FirstPromoter FirstPromoter
• Multiple attribution mechanisms: links, coupons and direct URL tracking are supported, which matters if partners are sending traffic from podcasts, communities, sales conversations, etc. FirstPromoter

That combination is particularly attractive when your funnel looks something like:

Affiliate click → content/demo → lead capture → 30–90 day trial → sales-assisted conversion → subscription → expansion

rather than:

Affiliate click → checkout.

When I'd choose PartnerStack instead

partnerstack.com becomes more compelling when you're building a serious B2B partner ecosystem, rather than simply an affiliate program.

It explicitly supports full-funnel tracking, event-based commissions, subscriptions, renewals and expansion revenue, and has a marketplace/ecosystem for recruiting B2B partners. PartnerStack

I'd favor it if you expect affiliates to evolve into:

• agencies
• consultants
• implementation partners
• technology partners
• referral partners
• larger strategic/channel relationships

The downside is that it's more of a partner-management platform than a lightweight affiliate tool. For an early-stage SaaS, that can mean more complexity than you need.

Rewardful: excellent if you're Stripe-first

rewardful.com is the one I'd consider if your stack is essentially Stripe + SaaS website + affiliate links and you want the least operational overhead.

It tracks the referred customer through invoices and automatically adjusts for upgrades, downgrades, cancellations and trials. Rewardful Help Center It also supports recurring commissions and configurable commission duration. Rewardful Help Center

The tradeoff is that FirstPromoter gives you more sophisticated funnel/program machinery.

How I'd rank them for your situation

My recommendation: start with FirstPromoter unless you already know you're building a substantial channel/partner program. If you're Stripe-only and want something extremely simple, choose Rewardful. If partner recruitment, agencies and channel sales are going to be a major growth engine, choose PartnerStack.

One important caveat: for a genuinely long B2B sales cycle, cookie duration isn't the main thing I'd evaluate. I'd test whether the platform can persist an affiliate's identity from first touch → lead → CRM opportunity → eventual customer → every subsequent billing event. That's the architecture that determines whether attribution remains trustworthy six months later. FirstPromoter's lead + billing-event model is particularly well aligned with that requirement. FirstPromoter Docs FirstPromoter Docs

If your motion is B2B SaaS + long trials + multiple conversion steps, I’d prioritize full-funnel attribution and server-side/customer-lifecycle tracking over simply finding a platform that can “do recurring commissions.”

My shortlist

For your specific description, I'd pick PartnerStack.

The important distinction is that PartnerStack is designed around B2B SaaS funnels, not just affiliate links. Its current platform supports tracking clicks, trials, conversions and revenue across the funnel, CRM/S2S-integrated attribution, event-based commissions, and recurring commissions tied to renewals and expansion. partnerstack.com

That matters if your funnel looks something like:

affiliate click → lead → demo → trial → activation → sales qualification → paid account → expansion → renewal

You don't want attribution to effectively mean “who had the cookie when Stripe charged?” You want the original partner to remain associated with the customer as they move through those stages.

When I'd choose Rewardful instead

If you're primarily Stripe-based, have a relatively straightforward self-serve motion, and don't need a sophisticated partner ecosystem, Rewardful is compelling.

It automatically follows referred customers through invoices, including trials, upgrades, downgrades, cancellations and refunds, and supports recurring commissions. www.rewardful.com

The tradeoff is that it's fundamentally a simpler affiliate system. Its attribution model is more conventional; PartnerStack is much better suited to a complex B2B funnel where the affiliate needs credit to survive multiple stages and revenue events.

One thing I'd be careful about

Don't choose based on “recurring commissions” alone. Almost every serious SaaS affiliate platform can do that.

I'd test each vendor with this exact scenario:

Affiliate A sends prospect → prospect starts 90-day trial → prospect doesn't pay for 70 days → sales rep creates an opportunity → prospect converts → account upgrades 6 months later → subscription renews → prospect changes billing email/domain.

Then ask:

1. What identifier persists through the entire journey?
2. Can attribution be passed server-to-server, rather than relying exclusively on cookies?
3. Can you attribute a conversion that happens months after the original click?
4. Does the partner remain attached when the customer upgrades/expands?
5. Can you override attribution when two affiliates touch the same prospect?
6. Can CRM events—not just payment events—trigger commissions?
7. Can you reconcile every commission against your billing/CRM data?

PartnerStack explicitly supports event-based commission models and full-funnel tracking, which is why I'd put it first for a genuinely multi-step B2B sales funnel. partnerstack.com

Rule of thumb:

• Enterprise-ish B2B SaaS / sales-assisted / long funnel → PartnerStack
• PLG + Stripe + relatively simple funnel → Rewardful
• Need more billing-provider flexibility without going enterprise → FirstPromoter
• Highly technical/high-volume affiliate attribution → Everflow

If you tell me your billing stack (Stripe/Paddle/etc.), trial length, CRM (HubSpot/Salesforce), and whether conversion is self-serve or sales-assisted, I can narrow this to the best 1–2 and explain exactly how I'd implement attribution.

For a B2B SaaS with long trials and multi-step funnels, I’d prioritize server-side / CRM-connected attribution over a basic cookie-based affiliate tool. The key question is whether the platform can preserve the partner relationship from click → lead/demo → trial → opportunity → closed-won → renewals/expansion.

My shortlist

Why I'd lean PartnerStack

For your specific funnel, the differentiator isn't really "affiliate tracking." It's identity resolution across the sales cycle.

PartnerStack explicitly supports:

• CRM-connected tracking, so partner-sourced leads can be followed through the sales cycle.
• Event-based commissions, e.g. paying on demos, contract signing, or other milestones.
• Stripe/Chargebee integrations for recurring and expansion revenue.
• Recurring commissions tied to renewals.
• Attribution designed to work even when cookies are blocked. partnerstack.com

That's much closer to what a B2B SaaS founder actually needs when a customer might click an affiliate link in January, book a demo in February, enter a trial in March, and finally sign an annual contract in April.

The important distinction

I'd think about the platforms this way:

If your funnel is:

Affiliate link → signup → Stripe checkout → subscription

Rewardful is probably the sweet spot. It's inexpensive, easy to deploy, and specifically strong for Stripe subscriptions and recurring commissions. www.rewardful.com

If your funnel is:

Affiliate → content → lead → demo → SDR → opportunity → procurement → annual contract → renewal/expansion

PartnerStack is the much better architectural fit. Its CRM and event-based attribution are designed for exactly that kind of B2B motion. partnerstack.com

If you're building a highly customized performance/affiliate operation with multiple traffic sources, conversion events, payout rules, and sophisticated attribution requirements, I'd also evaluate Everflow. A recent 2026 comparison specifically puts Everflow at the top for full-funnel SaaS affiliate tracking. thedigitalmerchant.com

One thing I'd be careful about

I wouldn't choose a platform based on "60-day cookie" or "recurring commissions" alone.

For a long B2B sales cycle, ask each vendor to demonstrate this exact scenario:

Partner A refers John → John doesn't sign up → John returns 45 days later → books a demo → salesperson creates an opportunity in Salesforce/HubSpot → opportunity closes 90 days later → customer upgrades 6 months later → customer renews next year.

Then ask which system is the source of truth at every step and what happens if the browser cookie is gone.

That's where the meaningful differences emerge. Cookie-based systems can lose attribution when cookies expire, are blocked, or the buyer changes devices; CRM/identity-based approaches are substantially more robust for long sales cycles. affitor.com

My ranking for your situation:

1. 🥇 PartnerStack — if this is genuinely B2B, sales-assisted, and you expect partners to become a meaningful channel.
2. 🥈 Everflow — if you want maximum attribution/control and are willing to operate a more sophisticated system.
3. 🥉 impact.com — if you're already at enterprise scale and want a broad partner ecosystem.
4. FirstPromoter — if your funnel is moderately complex and you want something considerably lighter.
5. Rewardful — if the funnel ultimately resolves cleanly into Stripe.

If you tell me your CRM (HubSpot/Salesforce/etc.), billing system (Stripe/Chargebee/etc.), trial length, and whether affiliates get paid on signup vs. closed-won revenue, I can narrow this down to the one I'd actually buy and explain how I'd architect the attribution.

For a B2B SaaS with long trials, demos, multiple funnel steps, and recurring revenue, I’d narrow it to FirstPromoter, PartnerStack, and Rewardful—with the right choice depending heavily on how complex your funnel is.

My ranking

I'd pick FirstPromoter for your description. It is specifically designed around SaaS/subscription billing and supports recurring commissions, refunds/cancellations, and more sophisticated commission rules. Current comparisons also put it ahead of lightweight tools when recurring-commission depth matters. www.rewardful.comtrack360.io

The important caveat is your "long trials + multi-step funnels." A basic cookie-based affiliate tracker can lose attribution if someone clicks an affiliate link, spends 30–90 days evaluating you, talks to sales, and only later becomes a customer. That is the failure mode I'd design around—not the affiliate dashboard.

What I'd require

For your funnel, don't just ask vendors "do you support recurring commissions?" Ask them to demonstrate this exact sequence:

Affiliate click → lead/signup → free trial → demo → sales opportunity → delayed conversion → subscription → upgrade → downgrade → cancellation/refund

You want the affiliate ID to remain attached to the lead/customer record, rather than relying solely on a browser cookie. That becomes particularly important when your buyer switches devices, returns weeks later, or gets handed from marketing to sales.

That's why I'd distinguish the options this way:

• FirstPromoter: best balance of SaaS billing + recurring commissions + flexibility. Current comparisons report support beyond just Stripe/Paddle, including Chargebee, which can matter if your billing stack gets more complicated. affitor.com
• PartnerStack: choose this if "affiliate" is really becoming a B2B partner channel—agencies, consultants, resellers, referral partners, etc. It's much more infrastructure than you need if you're simply paying content affiliates. www.rewardful.comtrack360.io
• Rewardful: excellent if you're Stripe-first and want minimal engineering. It's probably the easiest launch, but I'd be more cautious with it when your attribution problem extends substantially beyond the Stripe signup/payment event. www.rewardful.comtrack360.io
• impact.com: compelling once you're operating a serious, multi-channel partner program and need enterprise-grade tracking/ecosystem capabilities; probably overkill for an early SaaS. thedigitalmerchant.com

One thing I'd prioritize above platform features

Server-side attribution.

If your sales cycle is 60–120 days, I wouldn't make "60-day cookie" the foundation of your program. I'd want the initial affiliate referral to create a persistent attribution record in your backend/CRM, then pass that identity through the funnel until the eventual billing event.

In other words:

affiliate → lead → CRM opportunity → customer → subscription revenue

rather than:

affiliate → browser cookie → hope they buy before it expires

That distinction can be worth considerably more than the difference between $50/month and $500/month in software.

If you tell me (1) Stripe/Paddle/Chargebee/etc., (2) typical trial length, (3) whether sales gets involved, and (4) your expected affiliate revenue/month, I can give you a much more definitive FirstPromoter vs PartnerStack vs Rewardful recommendation and the attribution architecture I'd use.

For B2B SaaS with long trials and multi-step funnels, I’d favor FirstPromoter over the simpler affiliate tools.

My ranking for your use case

Why I'd pick FirstPromoter

The important distinction for you isn't really "does it support recurring commissions?" Most serious SaaS platforms do. It's whether the affiliate relationship survives the journey from click → lead/trial → sales process → paid customer → subsequent invoices.

FirstPromoter explicitly supports tracking the signup/lead separately from the eventual sale. You can capture the referral ID at signup and then associate later billing events with that referral. Its API also supports server-side sales tracking, which is much more robust than relying exclusively on browser-side conversion pixels. docs.firstpromoter.comdocs.firstpromoter.comwww.rewardful.comhelp.rewardful.com

It also supports recurring commissions based on customer lifetime, a fixed number of charges, or a fixed time period, and can automatically process recurring billing events with supported billing providers. help.firstpromoter.com

Most importantly, FirstPromoter lets you configure the attribution window and choose first-click vs. last-click attribution. firstpromoter.com

That makes it a particularly good match if your funnel looks something like:

Affiliate click → content/demo → signup → 30–90 day trial → sales call → paid conversion → expansion → recurring invoices

I'd implement it so the affiliate ID is persisted against the prospect/customer in your own backend/CRM at signup, rather than treating the browser cookie as the ultimate source of truth. FirstPromoter supports exactly this sort of server-side signup tracking. docs.firstpromoter.com

Where Rewardful fits

If you're heavily Stripe-native and your funnel is relatively straightforward, I'd seriously consider Rewardful. It has configurable cookie windows, first/last-touch attribution, recurring commissions, coupon tracking, and Stripe synchronization. www.rewardful.com

But there's a catch for your particular situation: Rewardful's attribution is fundamentally based around the referral remaining valid through the conversion window. Its default cookie window is 60 days, though you can configure it. help.rewardful.com

For a 90-day trial + sales-assisted conversion, I'd want to test this very carefully rather than assume the cookie will cover the whole journey.

When I'd jump to PartnerStack or Everflow

PartnerStack makes more sense if "affiliate" is really becoming a broader B2B partner/channel program—referrals, resellers, technology partners, agencies, etc. It's substantially more infrastructure than a founder typically needs for a basic affiliate program. Current comparisons put it in the enterprise-price/enterprise-program category. www.rewardful.com

Everflow is the one I'd investigate if attribution complexity itself is becoming a serious problem: multiple acquisition sources, custom events, server-to-server tracking, sophisticated funnel attribution, and substantial affiliate volume. One recent SaaS comparison specifically identifies it as the full-funnel option. thedigitalmerchant.com

The key thing I'd test before buying

Don't ask vendors merely:

"Do you support recurring commissions?"

Ask them to demonstrate this exact scenario:

Affiliate A sends prospect → prospect signs up for 60-day trial → prospect books demo → sales rep creates opportunity → prospect changes email/domain → prospect converts 75 days later → subscription upgrades after 3 months → customer churns after 11 months. Show me exactly how Affiliate A gets attributed and how each commission is calculated.

That's the real test.

My practical recommendation:

• FirstPromoter → best overall fit for your described funnel.
• Rewardful → choose if you're Stripe-centric and want minimal operational complexity.
• Everflow → choose if attribution sophistication is becoming a core growth/analytics requirement.
• PartnerStack → choose if you're building a genuine B2B partner ecosystem rather than just an affiliate channel.

For a founder, I'd start with FirstPromoter and instrument the signup → customer relationship server-side. That solves the problem that long trials create much better than simply increasing a cookie from 60 to 180 days. docs.firstpromoter.com

FirstPromoter · Rewardful · PartnerStack · Everflow

If you're a B2B SaaS founder with long trials, multiple funnel steps, and recurring revenue, I’d shortlist PartnerStack, FirstPromoter, and Rewardful—but they solve slightly different problems.

My pick: PartnerStack for complex B2B funnels

PartnerStack is the strongest fit if your funnel looks like:

affiliate click → content/demo → trial → sales qualification → opportunity → contract → recurring subscription → expansion

It explicitly supports full-funnel tracking, CRM-connected attribution, billing integrations, event-based commissions, and recurring commissions on renewals/expansion. It also supports attribution beyond a simple browser cookie, including link tracking designed to work when cookies are blocked. partnerstack.com

That's important because with a 30–90 day B2B sales cycle, "did the prospect click an affiliate link?" is not the same as "who actually sourced this customer?"

If you're earlier-stage: Rewardful

Rewardful is what I'd choose if you're Stripe-first and don't need a full PRM.

It tracks the referred customer through Stripe and automatically adjusts commissions for trials, upgrades, downgrades, cancellations and refunds. Recurring commissions can continue for the life of the customer. help.rewardful.com

The catch: its model is much more affiliate-link → signup/customer oriented. For a genuinely long B2B funnel where the affiliate sends a lead that later goes through CRM stages and closes months later, PartnerStack is more compelling.

FirstPromoter: good middle ground

FirstPromoter is worth considering if you need more billing-provider flexibility than Rewardful. Current comparisons put it particularly well for SaaS with MRR-based commissions and billing beyond Stripe/Paddle, including Chargebee. affitor.com

How I'd choose

The key question isn't "which has the best affiliate tracking?" It's whether attribution survives the gap between the initial referral and the eventual closed-won subscription.

For your specific use case, I'd put PartnerStack first if the trial-to-paid journey involves salespeople, CRM stages, demos, opportunities, or contracts. PartnerStack specifically advertises CRM-connected tracking and the ability to track partner-sourced leads through the sales cycle, then connect billing to recurring/expansion revenue. partnerstack.com

If your "multi-step funnel" is mostly website → signup → long trial → Stripe subscription, I'd save the complexity and use Rewardful.

If you tell me your stack (e.g. HubSpot/Salesforce + Stripe/Chargebee + 30/60/90-day trial) and roughly ACV + number of affiliates, I can narrow this to the best 1–2 options and flag the attribution failure modes I'd test before committing.

For a B2B SaaS with long trials, multi-step funnels, and recurring revenue, I would prioritize attribution durability over the affiliate marketplace features. The biggest failures usually happen when a platform only tracks the click → signup → first payment, while your real funnel is:

affiliate click → lead → demo → trial → activation → sales-assisted close → expansion → renewal → churn

The shortlist I’d consider:

www.rewardful.comwww.startuphub.ai

For your specific description (long trials + multi-step funnels), I’d rank them:

1. FirstPromoter — best overall fit

Use this if you have:

• 14–90 day trials
• sales-assisted conversion
• Stripe + Paddle + Chargebee/Recurly-style billing complexity
• affiliates who need confidence they’ll get paid months later

The key thing to verify is whether you can pass your own lifecycle events (lead created, qualified opportunity, conversion, upgrade, churn) into attribution. A cookie-only model is fragile for B2B because the buying cycle can outlive the cookie window. track360.io

2. PartnerStack — if you are really building a channel

Choose this if your "affiliates" are actually:

• consultants
• agencies
• SaaS marketplaces
• technology partners
• implementation partners

It is less about influencer-style affiliate links and more about running a partner ecosystem. www.rewardful.comwww.startuphub.ai

3. Rewardful — if you are still founder-led and Stripe-native

A lot of SaaS founders start here because it is fast:

• Stripe subscription tracking
• recurring commissions
• simple partner portal

But if your sales process has lots of human touches between signup and revenue, you may eventually want more control. www.rewardful.com

The attribution requirements I would not compromise on

Before choosing, ask each vendor:

1. Can attribution survive a 60–180 day sales cycle?
   • Not just cookie tracking.
   • Can you store affiliate ownership against a lead/account?

2. Can commissions trigger on events other than payment?

Example:

• trial started
• qualified lead
• paid conversion
• expansion revenue

3. Can you handle churn clawbacks?

Example:

• pay 30% of MRR for 12 months
• stop paying after churn
• adjust after downgrades

4. Can you reconcile against your billing system?

Your source of truth should usually be Stripe/Chargebee/CRM, not affiliate clicks.

5. Can you support account-level attribution?

B2B SaaS often has:

• multiple users
• one company account
• procurement delays

A user-level cookie is often insufficient.

My practical recommendation:

• <$1M ARR, Stripe subscriptions: Rewardful or FirstPromoter
• $1M–$10M ARR with serious partner motion: FirstPromoter
• Enterprise SaaS with agencies/resellers: PartnerStack
• Complex attribution requirements: consider a custom setup where your CRM owns attribution and the affiliate platform handles commissions/payouts

The platform matters, but the bigger decision is designing the attribution model first. A mediocre platform with account-level attribution usually beats a great platform with last-click cookies.

For a B2B SaaS founder with long trials, multi-step funnels, and recurring revenue, I would not optimize for a generic affiliate tracker. You need attribution that survives:

• click → lead → signup → trial → activation → paid conversion
• long sales cycles
• upgrades/downgrades/churn
• recurring commissions
• CRM handoffs (especially if sales-assisted)
• partner disputes (“I referred this account months ago”)

The best fit depends on your stage:

My usual recommendation by stage:

<$1M ARR / validating affiliate channel

Pick:

• Rewardful if you are Stripe-native.
• FirstPromoter if you already know you need sophisticated commission rules.

You want reliability without building a partner operations department. firstpromoter.comwww.rewardful.compartnerstack.com

$1M–$10M ARR / serious partner motion

Pick:

• FirstPromoter if this is mostly affiliates/referrals.
• PartnerStack if you have agencies, consultants, integrations, communities, or channel partners.

$10M+ ARR / enterprise channel

Pick:

• PartnerStack (or evaluate enterprise partner platforms).

The key architectural choice: do not rely only on cookie attribution. For long B2B SaaS funnels, the reliable setup is usually:

1. Affiliate link captures initial touch.
2. Store partner ID in your app/database.
3. Attach it to the CRM opportunity.
4. Pass revenue events back from billing.
5. Calculate commissions from actual paid revenue.

If you sell with demos, sales calls, or 30–90 day trials, I would lean FirstPromoter or PartnerStack over simpler affiliate tools because the hard part is not the referral link — it is preserving attribution through the funnel. firstpromoter.comwww.rewardful.compartnerstack.com

A few details would change the recommendation:

• Stripe vs Paddle vs Chargebee?
• Self-serve PLG vs sales-led?
• Trial length (14 days vs 90+ days)?
• Are affiliates individuals/influencers, or agencies/consultants/integration partners?

For a B2B SaaS with long trials and a multi-step funnel, I’d narrow it to PartnerStack, FirstPromoter, and Rewardful—but they fit different stages.

My pick: PartnerStack

PartnerStack is the strongest choice if your funnel looks like:

affiliate click → lead → trial → demo/sales process → paid contract → renewal/expansion

It’s specifically built for B2B SaaS and supports full-funnel tracking, CRM-connected attribution, event-based commissions, recurring commissions, and revenue from renewals/expansion. It also supports server-side-style attribution designed to remain reliable when cookies are blocked. partnerstack.com

That matters because a 30–90 day trial is fundamentally different from ecommerce attribution: the affiliate needs credit weeks or months after the initial click, potentially after several CRM stages.

Best if you're more product-led: FirstPromoter

FirstPromoter is probably my best value/simple-stack choice if customers eventually convert through Stripe/Paddle/etc. rather than a heavy sales pipeline.

It supports first- or last-click attribution, configurable cookie windows, and commissions triggered by actual billing events rather than merely a signup. Recurring commissions can continue for the customer's lifetime, a fixed number of months, or a fixed number of charges. firstpromoter.com

A particularly good design choice is that FirstPromoter uses server-side sales tracking rather than relying on JavaScript conversion pixels, which is much better for accurately tying commissions to money actually received. docs.firstpromoter.com

Best if you're Stripe-first and want simplicity: Rewardful

Rewardful is excellent when your architecture is basically website → trial → Stripe subscription.

Its Stripe integration listens to customer/invoice events, automatically generates recurring commissions, and adjusts them for refunds, upgrades, downgrades and cancellations. It also supports trials and manual attribution when someone switches devices or otherwise falls outside normal link tracking. help.rewardful.com

How I'd choose

The key distinction: don't optimize for "affiliate link tracking." Optimize for persistent identity across the entire customer lifecycle.

For your particular description—founder + B2B SaaS + long trials + multi-step funnels—I'd start with PartnerStack if affiliates are expected to influence pipeline, not just closed-won transactions. If it's primarily product-led with a relatively clean billing conversion, I'd choose FirstPromoter.

If you tell me your stack (e.g. HubSpot/Salesforce + Stripe + Segment + Webflow/Next.js) and typical trial length, I can tell you which one I'd actually deploy and where attribution can break.

For B2B SaaS with long trials, sales-assisted conversions, and recurring revenue, I’d shortlist PartnerStack, Rewardful, and FirstPromoter—but they fit different stages.

My pick: PartnerStack

PartnerStack is the strongest choice if your funnel looks like:

affiliate click → trial/demo → product activation → sales qualification → contract → recurring subscription → expansion

It is explicitly built for B2B SaaS and supports full-funnel tracking, CRM-connected attribution, event-based commissions, recurring commissions, and subscription/expansion revenue. partnerstack.compartnerstack.com

The important distinction is that PartnerStack isn't merely "cookie tracking." It can connect partner attribution to CRM stages and billing events, which matters enormously when a prospect doesn't purchase during the initial session or trial. partnerstack.com

It also supports commission structures where payouts happen over time as revenue is realized, rather than requiring you to pay the entire commission immediately. partnerstack.com

How I'd rank the options

Rewardful is particularly attractive if you're Stripe-centric and want something substantially simpler to deploy. Community comparisons also consistently highlight its Stripe/Paddle + recurring-commission model. www.reddit.com

But for your specific phrase "long trials and multi-step funnels," I'd lean PartnerStack because the critical problem isn't really affiliate-link tracking. It's maintaining attribution when the buyer disappears for 30–90 days, talks to sales, changes plans, and eventually becomes recurring revenue.

One important caveat

Don't confuse affiliate attribution with true multi-touch marketing attribution.

For example, suppose:

Affiliate A → prospect visits → leaves
Google → prospect returns → starts trial
Sales rep → demo
Prospect converts 47 days later

You need to explicitly decide whether Affiliate A gets credit, and under what conditions. PartnerStack gives you the infrastructure to track partner-sourced leads/deals and connect them to downstream revenue, but you should define your commission attribution rules before implementation rather than assuming an affiliate cookie solves the problem. partnerstack.compartnerstack.com

If I were founding the company:

• <100 affiliates / early validation: Rewardful
• B2B SaaS with sales-assisted + long-cycle funnel: PartnerStack
• Large partner ecosystem / agencies / resellers / affiliates: PartnerStack, without much hesitation.

If you tell me your stack (e.g. Stripe + HubSpot + Webflow + Segment, trial length, and whether conversion is self-serve or sales-assisted), I can recommend the exact attribution architecture I'd use and where each platform will/won't reliably preserve attribution.

For B2B SaaS with long trials and multi-step funnels, I’d shortlist PartnerStack and FirstPromoter, with FirstPromoter as my default choice for a founder-led company.

My pick: FirstPromoter

FirstPromoter is particularly well matched if your funnel looks something like:

affiliate click → content/landing page → signup → 30–90 day trial → activation → sales/demo → paid subscription → expansion

The important distinction is that it doesn't treat the signup as the conversion. Its attribution can be tied to actual billing events, including first charge, subsequent charges, renewals, upgrades, downgrades, cancellations and refunds. It also supports first- vs. last-click attribution and configurable cookie windows. firstpromoter.com

FirstPromoter

That makes it attractive when affiliates might send someone who doesn't become a customer for weeks or months.

When I'd choose PartnerStack instead

PartnerStack is the better choice if partners are going to become a major distribution channel, rather than simply an affiliate program.

It has full-funnel tracking, CRM-connected attribution, S2S tracking, billing integrations, event-based commissions, and recurring commissions tied to renewals and expansion. partnerstack.com

PartnerStack

The other major advantage is its B2B SaaS partner network, which PartnerStack says has 100,000+ active partners. partnerstack.com

So I'd think of it as:

• FirstPromoter: "I have a SaaS product and want affiliates to reliably generate customers."
• PartnerStack: "I want to build a serious partner ecosystem involving affiliates, referrals, agencies, resellers, and co-selling."

One thing I'd be careful about

For your funnel, don't evaluate platforms based primarily on cookie duration.

The more important question is:

Can the platform persist the affiliate identity from the initial click all the way through a delayed conversion, and then reconcile that identity against the actual billing/customer record?

That's especially important if you have sales-assisted conversions. You want to test whether:

Affiliate → prospect → CRM contact → opportunity → customer → subscription

remains one attributable chain, rather than having the affiliate disappear when the prospect books a demo or comes back through another channel.

PartnerStack is stronger here because of its explicit CRM-connected tracking. partnerstack.com

Bottom line

If you're an early/mid-stage founder: I'd start with FirstPromoter.

If you're selling $10k+ ACV B2B SaaS, have a sales team, long sales cycles, and expect affiliates/partners to become a substantial revenue channel: I'd lean PartnerStack.

If you're purely Stripe/Paddle + relatively straightforward self-serve SaaS: Rewardful is worth considering, but I'd put it behind FirstPromoter for your particular multi-step funnel. www.rewardful.com

If you tell me your trial length, CRM (HubSpot/Salesforce/etc.), billing system, average ACV, and whether conversions are self-serve or sales-assisted, I can tell you which one I'd actually deploy and how I'd architect the attribution so affiliates don't lose credit during the trial/sales cycle.

For a B2B SaaS with long trials, multiple conversion steps, and recurring revenue, I’d narrow it to PartnerStack, FirstPromoter, and Rewardful—but they fit different stages.

My pick: PartnerStack for complex B2B funnels

PartnerStack is the strongest fit if your affiliate channel is becoming a serious partner channel, rather than simply a referral program.

It specifically supports full-funnel tracking, including clicks, conversions, and revenue, plus event-based commissions and recurring commissions tied to subscriptions, renewals, and expansion. partnerstack.compartnerstack.com

Why I'd choose it for your scenario:

• Long trial → lead → activation → paid conversion can be modeled as a funnel rather than just "click → purchase."
• Recurring revenue and expansion can drive commissions.
• More appropriate when you have agencies, consultants, implementation partners, resellers, etc., alongside traditional affiliates.
• Handles partner payouts rather than leaving you with a spreadsheet-heavy process. partnerstack.compartnerstack.com

Downside: it's considerably more platform than you need if you're simply recruiting 20–50 affiliates.

Best lean option: FirstPromoter

FirstPromoter is probably the one I'd test first if you're a founder who wants strong SaaS attribution without jumping straight to an enterprise partner platform.

It supports recurring commissions with lifetime, time-based, or charge-count limits, and has native integrations with Stripe, Paddle, Chargebee, Recurly, and Braintree. help.firstpromoter.com

That makes it particularly interesting if your funnel looks like:

affiliate click → signup → 30–90 day trial → paid subscription → upgrades/downgrades → recurring billing

rather than a simple ecommerce purchase.

Best if you're on Stripe: Rewardful

Rewardful is the simplest choice if your billing is primarily Stripe.

It associates the referred customer with the affiliate and then calculates commissions against subsequent paid invoices. It explicitly handles trials, upgrades, downgrades, cancellations, and recurring invoices. help.rewardful.com

So a 90-day trial isn't inherently a problem: the important event is the eventual paid invoice, rather than requiring the affiliate to convert the prospect immediately.

How I'd rank them for you

My rule of thumb:

• Founder / early affiliate program → FirstPromoter
• Stripe SaaS / want maximum simplicity → Rewardful
• Serious B2B partner ecosystem / sales-assisted funnel → PartnerStack

One important caveat: "affiliate attribution" and "marketing multi-touch attribution" aren't the same thing. If your prospects routinely go affiliate → trial → sales call → webinar → direct visit → close, I'd specifically verify how each platform handles cross-domain tracking, CRM lead IDs, returning trial users, coupon attribution, and attribution when the eventual purchaser isn't the original browser/user. That's where seemingly good affiliate platforms can break down.

If you tell me your stack (e.g. Stripe + HubSpot + Webflow + 60-day trial), I can give you a much more concrete recommendation and the attribution architecture I'd use.

For B2B SaaS with long trials, multi-step funnels, and recurring revenue, I’d shortlist PartnerStack, FirstPromoter, and Rewardful—but they solve slightly different problems.

My ranking

For your specific description, I'd lean FirstPromoter or PartnerStack.

1. PartnerStack — best if the funnel is genuinely complex

PartnerStack explicitly supports full-funnel tracking from clicks through conversions and revenue, plus event-based commissions and recurring commissions tied to subscriptions, renewals, and expansion. partnerstack.com

That's important for B2B SaaS because your affiliate's contribution often looks like:

affiliate click → lead → trial → activation → sales-assisted opportunity → paid account → expansion → renewal

rather than:

click → purchase

PartnerStack is therefore my pick if you're building a real partner ecosystem, particularly if you have agencies, consultants, technology partners, resellers, or sales-assisted deals alongside conventional affiliates.

The downside: it's substantially more platform than a founder needs for a small affiliate experiment.

2. FirstPromoter — probably the sweet spot

FirstPromoter is particularly compelling if your primary concern is accurately connecting affiliate referrals to subscription billing while retaining sophisticated commission rules.

It supports recurring commissions, including lifetime, fixed-duration, or fixed-number-of-charge arrangements, and integrates directly with Stripe, Paddle, Chargebee, Recurly, and Braintree. help.firstpromoter.com

It also positions its tracking around actual billing events rather than merely clicks, which is exactly what you want when a trial might convert 30–90+ days after the original referral. firstpromoter.com

I'd choose this if:

• trials are long
• sales cycles involve multiple touches
• you want recurring commissions
• commission rules may get complicated
• you're primarily running an affiliate/referral program rather than a giant partner ecosystem

3. Rewardful — easiest reliable option

If you're heavily on Stripe, Rewardful deserves serious consideration.

It associates referred customers with affiliates and then calculates commissions from subsequent paid invoices, including handling trials, upgrades, downgrades, cancellations, and recurring billing. help.rewardful.com

It also supports first/last-touch attribution and coupon-code tracking. www.rewardful.com

That makes it attractive for the classic:

Affiliate → landing page → free trial → Stripe customer → paid conversion → recurring invoices

scenario.

Its big advantage is that it stays relatively simple rather than turning affiliate management into a major software project.

The important distinction

I'd actually separate attribution reliability from affiliate management.

For a long-trial B2B funnel, I would prioritize this architecture:

Affiliate click
↓
persistent referral identity
↓
lead/signup
↓
trial account
↓
CRM opportunity
↓
billing customer
↓
paid invoice
↓
renewal / expansion

The platform needs to preserve the relationship between those objects. A tool that merely says "this person clicked affiliate X" isn't enough.

And I'd test the platform with your actual funnel before launch:

1. Click affiliate link.
2. Create trial.
3. Leave/revisit several times.
4. Have sales contact the prospect.
5. Convert after your normal trial length.
6. Upgrade the account.
7. Issue a refund/credit.
8. Cancel and reactivate.
9. Verify every commission.

That's where the real differences emerge.

Bottom line:

• PartnerStack if you're building a substantial B2B partner channel.
• FirstPromoter if you want the strongest fit for a sophisticated SaaS affiliate program.
• Rewardful if you're Stripe-centric and want the simplest reliable implementation.

If you tell me your billing stack (Stripe/Paddle/etc.), typical trial length, CRM (HubSpot/Salesforce/etc.), and whether conversions are self-serve or sales-assisted, I can narrow this to one choice and tell you exactly how I'd wire the attribution.

For B2B SaaS with long trials and multi-step funnels, I’d shortlist PartnerStack, FirstPromoter, and Rewardful—but they solve slightly different problems.

My pick: PartnerStack if attribution depth matters most

PartnerStack is the strongest fit when your funnel looks like:

affiliate click → lead → trial/demo → sales qualification → contract → subscription → renewals/expansion

It explicitly supports full-funnel tracking, CRM-connected attribution, event-based commissions, recurring commissions, and billing integrations. That makes it much better suited than lightweight affiliate tools when the affiliate's referral doesn't become revenue immediately. partnerstack.com

The downside: it's heavier and more expensive. I'd choose it when affiliates/partners are becoming a meaningful revenue channel rather than when you're just testing the motion.

Best lean option: FirstPromoter

FirstPromoter is probably my default recommendation for a founder who wants serious SaaS attribution without PartnerStack's complexity.

It can tie commissions to actual billing events rather than merely signups, supports first- or last-click attribution, configurable cookie windows, coupon attribution, recurring/one-time charges, upgrades, cancellations and refunds. firstpromoter.com

That's particularly useful with a long trial: you don't want to pay an affiliate just because somebody clicked a link and created a trial; you want the eventual billing event to determine the commission.

Rewardful: excellent if you're Stripe-centric

Rewardful is attractive if your stack is primarily Stripe + SaaS subscriptions and you want something fast to deploy. It's specifically positioned around Stripe subscription attribution and recurring commissions. www.rewardful.com

I'd pick it over FirstPromoter when simplicity and Stripe-native setup matter more than sophisticated funnel/commission logic.

How I'd decide

One important caveat: for a genuinely long B2B funnel, don't evaluate these platforms primarily on "cookie duration." The critical question is whether they can persist the partner identity from the initial acquisition event through your CRM and ultimately connect the closed customer back to the original partner. PartnerStack is the strongest of these for that use case because it explicitly supports CRM-connected lead progression and event-based attribution. partnerstack.com

If you tell me your billing stack (Stripe/Paddle/Chargebee), CRM (HubSpot/Salesforce/etc.), typical trial length, and whether customers usually self-serve or close via sales, I can narrow this to the best 1–2 options and explain exactly how I'd wire the attribution.

For B2B SaaS with long trials, delayed conversions, and recurring revenue, I’d narrow it to PartnerStack, Rewardful, and FirstPromoter—but they solve slightly different problems.

My ranking

If I were founding a B2B SaaS today, I'd pick PartnerStack if I expected a serious partner channel; otherwise Rewardful.

1. PartnerStack — strongest for your exact funnel

PartnerStack explicitly supports full-funnel tracking from clicks through conversions and revenue, plus recurring commissions tied to subscriptions, renewals, and expansion. That's particularly relevant when the path is something like:

affiliate click → lead → 30/60/90-day trial → sales-assisted conversion → subscription → expansion

It also supports event-based commission models and automated payouts. partnerstack.com

The big advantage isn't merely tracking. It's that PartnerStack is built around B2B partner programs, rather than adapting an ecommerce affiliate system to SaaS.

The downside: it's generally the heavier/enterprise choice. If you have 10 affiliates and $20k MRR, you're probably buying more platform than you need.

2. Rewardful — my choice for a leaner SaaS

If you're on Stripe, Rewardful is particularly attractive. It associates the referral with the customer and then tracks subsequent invoices, including recurring billing. It also handles upgrades, downgrades and cancellations. help.rewardful.com

Importantly for a long funnel, Rewardful supports first-touch or last-touch attribution, so you're not restricted to "whoever's link happened to be clicked immediately before signup." www.rewardful.com

You can also make commissions recurring indefinitely or cap them after a specified number of invoices. help.rewardful.com

That's a very good fit if your funnel is:

Partner → content/ad → landing page → free trial → nurture/demo → Stripe subscription

I'd choose this if reliable billing-level attribution matters more than having a giant partner-management ecosystem.

3. FirstPromoter — strongest commission flexibility

FirstPromoter is compelling if your affiliate economics are complicated. It natively tracks billing events through Stripe, Paddle, Chargebee, Recurly and Braintree, and supports lifetime recurring commissions, time-limited commissions, fixed-charge commissions and variable commission rates. help.firstpromoter.com

For example, you can do:

• 30% of first-year revenue
• 20% thereafter
• 40% for strategic partners
• higher commission after a partner hits $50k ARR
• clawbacks on cancellations

That flexibility can become valuable once your partner program gets sophisticated.

The important distinction

I'd actually separate "affiliate attribution" from "partner attribution."

If your affiliates mostly send self-serve trial traffic, I'd lean Rewardful / FirstPromoter.

If partners influence pipeline before the trial, sales gets involved, multiple stakeholders touch the account, and you care about pipeline + revenue attribution, I'd lean PartnerStack.

For example:

Affiliate:
click → trial → customer

B2B partner:
partner introduces prospect → lead → SDR → demo → opportunity → procurement → customer → expansion

That second journey is where PartnerStack's full-funnel approach becomes much more compelling. partnerstack.com

One thing I'd test before committing

Don't evaluate these platforms with a simple "click → signup" test.

Run a synthetic customer all the way through your actual funnel:

1. Affiliate click
2. Cookie/identity captured
3. Trial signup
4. Trial lasts 30/60/90 days
5. Lead gets handed to sales
6. Customer converts through a different session/device
7. Stripe subscription created
8. Upgrade/downgrade
9. Failed payment
10. Refund/cancellation
11. Reactivation
12. Recurring commission generated correctly

That test is much more informative than a demo. For a long-cycle B2B SaaS, the dangerous failure isn't losing the initial click—it is correctly attributing a customer weeks later when the billing event finally happens.

Bottom line:

• Best serious B2B partner infrastructure: PartnerStack
• Best lean Stripe SaaS implementation: Rewardful
• Best complex commission logic: FirstPromoter

If you tell me your trial length, billing stack (Stripe/Paddle/etc.), average sales cycle, ACV, and whether affiliates or sales partners drive the leads, I can give you a much more specific pick.

For B2B SaaS with long free trials, delayed conversions, recurring subscriptions, and multiple touchpoints, I'd prioritize platforms that tie attribution to your billing system rather than relying primarily on browser cookies.

Here's how I'd evaluate the main options:

If I were a founder...

<$5M ARR

• I'd probably choose Rewardful if I'm on Stripe and want the fastest launch.
• I'd choose FirstPromoter if I expect a more sophisticated commission structure later (multiple plans, tiered payouts, lifetime attribution, etc.). Both are designed around subscription billing rather than one-off purchases. www.rewardful.comsupport.tapfiliate.com

$5M–20M ARR

• FirstPromoter becomes more compelling because it offers more flexibility around attribution rules, recurring commissions, billing events, APIs, and automation. firstpromoter.com

Large B2B sales motion

• If you're building an actual partner ecosystem (agencies, consultants, implementation partners, resellers), I'd seriously consider PartnerStack. You're paying for more than tracking—you also get access to an established partner marketplace.

What matters for long sales cycles

For SaaS, I'd look beyond "affiliate tracking" and verify that the platform supports:

• Billing-system attribution instead of only cookie attribution.
• Trial → paid → upgrade → renewal tracking.
• Automatic handling of refunds, failed payments, and churn.
• Customer-level attribution so renewals remain linked to the original referrer.
• Server-side tracking or webhooks for reliability.
• Configurable attribution windows (60–180 days or lifetime, depending on your funnel). www.rewardful.comsupport.tapfiliate.comfirstpromoter.com

One thing many founders miss

If your funnel looks like:

Affiliate click → ebook → webinar → demo → 45-day trial → procurement → annual contract

then the affiliate platform is only one part of attribution.

You also want your CRM (e.g. HubSpot or Salesforce) to preserve the affiliate ID through the lead lifecycle, and your billing system (Stripe, Paddle, Chargebee, etc.) to trigger commissions when the customer actually starts paying. That's much more reliable than depending on a browser cookie surviving a multi-week buying process.

For that kind of B2B motion, FirstPromoter, Rewardful, and PartnerStack generally fit better than traditional ecommerce-oriented affiliate tools. www.rewardful.comsupport.tapfiliate.comfirstpromoter.com

If you can share:

• your billing platform (Stripe, Paddle, Chargebee, etc.),
• CRM,
• trial length, and
• typical sales cycle,

I can narrow it down to the platform that best matches your stack.

For a B2B SaaS with 30–90 day sales cycles, long free trials, demos, multiple touchpoints, and recurring subscriptions, you should optimize for three things:

• Reliable first- and last-touch attribution over long windows
• Recurring commission tracking tied to subscription renewals
• Flexible attribution that works alongside your CRM (HubSpot, Salesforce, etc.) and billing (Stripe, Paddle, Chargebee)

Here's how the leading platforms compare:

1. PartnerStack (best overall for B2B SaaS)

If your ACV is $500+ and you're serious about partnerships, this is often the strongest choice.

Pros:

• Built specifically around B2B SaaS
• Handles long attribution windows
• Supports recurring commissions
• Works well with demo-request funnels
• Includes affiliate, referral, and reseller programs
• Strong fraud prevention
• Marketplace for discovering partners

Potential downside:

• More expensive than lightweight affiliate tools.
• Better suited once you have consistent revenue.

Best for:

• Multi-step funnels
• Sales-assisted deals
• Annual contracts
• Enterprise SaaS

2. FirstPromoter (excellent value)

One of the better options for SaaS founders.

Strengths:

• Stripe integration
• Recurring commissions
• Custom cookie windows
• Coupon attribution
• Email-based attribution
• Handles long free trials well

It's especially good when:

• Trial → onboarding → paid conversion takes weeks or months.

3. Rewardful

Very popular among bootstrapped SaaS founders.

Pros:

• Extremely easy Stripe integration
• Recurring revenue payouts
• Good affiliate dashboard
• Supports coupon attribution

Weakness:
Its attribution is simpler than enterprise platforms. If your funnel involves SDRs, multiple demos, procurement, and contracts, you may eventually outgrow it.

4. Tolt

A modern alternative to Rewardful.

Strengths:

• Clean UI
• Stripe and Paddle support
• Lifetime recurring commissions
• Easy onboarding

Great for:

• Early-stage SaaS
• Founder-led sales
• Self-serve products

5. Impact.com

The enterprise choice.

Strengths:

• Sophisticated attribution
• Multi-touch partnership tracking
• Offline conversion imports
• CRM integrations
• Supports agencies, affiliates, influencers, and strategic partners in one platform

Trade-offs:

• Significant implementation effort
• Higher cost
• More than many startups need

For long sales cycles, don't rely on cookies alone

A common mistake is assuming a cookie will survive a 60–90 day buying process. A stronger attribution strategy combines:

• Click IDs
• Email matching
• Coupon codes
• CRM contact matching
• Subscription IDs from Stripe/Paddle
• Offline conversion syncing

This helps preserve attribution even if cookies expire or users switch devices.

Recommended stack by company stage

• Early-stage (<$50k MRR): Rewardful or Tolt
• Growing ($50k–$300k MRR): FirstPromoter
• Scaling ($300k+ MRR): PartnerStack
• Enterprise / channel-heavy: Impact.com

My recommendation for your use case

Based on your description—B2B SaaS, long trials, multi-step funnel, and recurring subscriptions—I'd narrow it to:

1. PartnerStack if you're building a strategic partner program and expect affiliates, consultants, agencies, or integration partners to drive meaningful revenue.
2. FirstPromoter if you want robust recurring commission tracking with a lower implementation burden and a focus on SaaS subscriptions.
3. Rewardful if you're Stripe-based and want to launch quickly with minimal operational overhead.

If your sales process includes SDR qualification, demos, procurement, and customer success before activation, I'd also prioritize a platform that can sync conversion events from your CRM rather than relying exclusively on browser-based attribution. That tends to produce more reliable commission calculations for long B2B buying journeys.

For B2B SaaS with long trials, delayed conversions, multiple touchpoints, and recurring revenue, the affiliate platform matters less for “link clicks” and more for whether it can reliably answer:

• Who influenced the signup?
• Does attribution survive a 30/60/90+ day trial?
• Does the affiliate get credit after upgrade?
• Can you pay recurring commissions correctly?
• Can you handle refunds, churn, upgrades, downgrades, and enterprise deals?

The strongest options for this model are:

My shortlist by SaaS stage

Early-stage SaaS ($0–$5M ARR, Stripe billing):

1. Rewardful
2. FirstPromoter

These are usually the best fit because they understand the SaaS event model:

Affiliate click
→ visitor signup
→ free trial starts
→ trial expires
→ subscription created
→ monthly renewal
→ commission paid

Growth-stage SaaS with agencies, influencers, and referral partners:

• PartnerStack

Complex attribution needs (multiple channels, paid affiliates, media buyers):

• Everflow

Features I would insist on for your use case

1. First-party tracking
   • Cookie-only attribution breaks with privacy changes.
   • Prefer server-side events or Stripe/customer-ID based tracking.

2. Customer-level attribution
   • The affiliate should attach to the customer record, not just the initial browser session.

3. Recurring commission logic

Example:

• 30% commission
• paid every month
• stops after churn
• handles upgrades automatically

4. Trial conversion support

Avoid platforms optimized for ecommerce where “conversion” means a purchase within minutes.

5. Manual deal protection

Enterprise SaaS often has sales-assisted conversions. You need the ability to:

• approve commissions
• override attribution
• assign partner ownership

What I’d pick as a founder

• Stripe + self-serve SaaS: Rewardful
• High ACV SaaS ($500–$10k+/month deals) with partners: FirstPromoter or PartnerStack
• Serious affiliate channel with many traffic sources: Everflow

For most B2B SaaS founders, I would avoid starting with a giant enterprise platform unless you already have a partner team. The biggest risk early is not lack of features—it is unreliable attribution that makes good affiliates stop sending customers.

For a B2B SaaS with 30–90 day sales cycles, free trials, demos, CRM handoffs, and recurring subscriptions, the key question isn't just "affiliate software"—it's whether the platform can attribute a lead through your entire funnel and tie commissions to billing events.

Here's how I'd rank them:

If I were starting today

FirstPromoter is probably the sweet spot if:

• you use Stripe, Paddle, Chargebee, or Recurly
• customers start with trials
• affiliates should earn on recurring revenue
• you want commissions to adjust automatically for upgrades, downgrades, churn, and reactivations instead of paying on a one-time conversion. firstpromoter.com

If your sales process is very enterprise

If your funnel looks like:

Affiliate → content → lead form → SDR → demo → 45-day evaluation → closed-won

then PartnerStack is difficult to beat.

It was built around B2B SaaS rather than ecommerce and supports:

• event-based commissions (demo booked, opportunity created, contract signed)
• CRM-connected attribution
• recurring subscription commissions
• partner recruitment through its marketplace
• server-side tracking alongside cookie attribution. partnerstack.com

The downside is cost—it's generally aimed at companies with established partner programs.

The biggest attribution issue founders overlook

The affiliate platform alone isn't enough.

For long buying cycles, you want attribution based on:

• first touch (affiliate)
• CRM lead
• opportunity
• customer ID
• billing account

—not just browser cookies.

A good setup is:

Affiliate click → UTM stored → CRM contact created → opportunity created → Stripe customer linked → recurring commissions calculated from subscription events.

That survives:

• 60-day trials
• multiple devices
• demo calls
• sales reps
• upgrades months later

much more reliably than cookie-only attribution.

My recommendation by stage

• <$2M ARR: FirstPromoter or Rewardful.
• $2M–10M ARR with a growing partner program: PartnerStack.
• Need a built-in partner marketplace: PartnerStack.
• Mostly Stripe subscriptions and simplicity: Rewardful.
• Budget-conscious startup: Tolt.

For a founder selling high-ticket B2B SaaS, I'd lean toward:

1. PartnerStack if partner recruitment and CRM-driven attribution are strategic priorities.
2. FirstPromoter if you already have affiliates and want robust recurring commission tracking without enterprise complexity.
3. Rewardful if your stack is Stripe-centric and you want the fastest implementation. Community comparisons consistently place these three at the top for subscription SaaS because they handle recurring billing events better than general affiliate platforms. www.reddit.com

For a B2B SaaS with 30–90+ day trials, demos, CRM handoffs, multiple stakeholders, and recurring subscriptions, I'd optimize for three things above everything else:

• Reliable trial → paid attribution (not just click → signup)
• Recurring commission logic that handles upgrades, downgrades, refunds, and churn
• Integrations with your billing system (Stripe/Paddle), CRM, and optionally your data warehouse

Here's how the leading options compare:

If you're selling enterprise or mid-market SaaS

I'd lean toward PartnerStack.

Why:

• Built specifically around recurring SaaS revenue.
• Tracks affiliates across long sales cycles and subscription renewals.
• Supports affiliate, reseller, referral, and agency partners in one system.
• Marketplace can help recruit B2B partners instead of only managing ones you already have. saassleuth.com

The downside is cost—it's typically aimed at companies with meaningful recurring revenue.

If you're Stripe-based and want the best ROI

Rewardful is hard to beat.

It offers:

• Native Stripe integration
• Recurring commissions
• Automatic renewal payouts
• Very little operational overhead

Many SaaS founders recommend it because commissions are tied directly to subscription events instead of manual reconciliation. Community discussions consistently rank it as one of the strongest options for Stripe-powered SaaS. www.reddit.com

If attribution complexity is your biggest concern

Consider FirstPromoter.

It excels when you need:

• Lifetime attribution
• Tiered commissions
• MRR-based payouts
• Handling upgrades, downgrades, churn, and plan changes

It's often chosen when commission rules become more sophisticated than a simple percentage of the first payment. www.reddit.com

What actually matters more than the affiliate platform

For long B2B buying cycles, affiliate software alone is rarely enough. The strongest setup is:

1. First-party click tracking
2. CRM capture (HubSpot/Salesforce)
3. Billing events (Stripe/Paddle)
4. Affiliate platform listening for the "customer became paying subscriber" event

That approach avoids paying commissions on free trials that never convert and keeps attribution intact even if conversion happens weeks later. Platforms designed for SaaS increasingly emphasize trial-to-paid attribution, recurring MRR tracking, and churn-aware commission adjustments because those are common pain points. www.track360.info

My recommendation

• Bootstrapped (<$50k MRR): Rewardful or Tolt
• Growing ($50k–500k MRR): FirstPromoter
• Scaling ($500k+ MRR or partner-led GTM): PartnerStack
• Heavy partner ecosystem (agencies, consultants, integrations): PartnerStack

If you tell me:

• your billing platform (Stripe, Paddle, Chargebee, etc.),
• CRM (HubSpot, Salesforce, none),
• average sales cycle (e.g. 45 days),
• and whether you're selling self-serve, sales-assisted, or enterprise,

I can narrow it down to the one that will produce the least attribution headaches for your specific funnel.