If you’re a SaaS business and want a simple affiliate/referral program rather than a full-blown partner ecosystem, I’d shortlist Rewardful, FirstPromoter, and Tolt. I would not start with PartnerStack or impact.com unless you expect the program to become substantially more complex.
Very simple, excellent Stripe integration, recurring commissions, 0% transaction fee
FirstPromoter
More flexible affiliate programs
$49/mo
Strong commission rules, fraud protection, email automation, good billing integrations
Tolt
Early-stage SaaS
~$69/mo*
Built specifically for startups; Stripe/Paddle/Chargebee; branded partner portal
PartnerStack
Serious B2B partner ecosystem
Custom
Affiliates + referrals + co-selling + resellers; much more powerful than you probably need
impact.com
Large/complex partnership programs
$30/mo Starter; $500/mo Essentials
Huge partner ecosystem and sophisticated tracking, but overkill for a basic SaaS referral program
*Tolt's current pricing is less clearly exposed in the sources I found, so I'd verify the live plan before purchasing.
🥇 I'd pick Rewardful for most SaaS companies
Rewardful is particularly compelling if you use Stripe.
It starts at $49/month, has a 14-day trial, unlimited affiliates, and 0% transaction fees. Its Stripe integration tracks recurring billing events—including upgrades, downgrades, cancellations and trials—so commissions can follow the actual customer lifecycle.
That makes it a good fit for a straightforward program like:
“Refer a customer → give the customer 20% off → give the partner 20% recurring commission for 12 months.”
You can also do coupon-code tracking, first/last-touch attribution, multiple currencies, fraud detection, and PayPal/Wise payouts.
One caveat: managed payouts add 3%, so I'd factor that into your economics if you want Rewardful to handle the payout administration.
It starts at $49/month for up to $5,000/month in affiliate-attributed revenue, with a $99/month tier up to $15,000.
It's particularly good if you want more sophisticated rules: percentage or flat commissions, one-time or lifetime commissions, different rates by plan, free months/credits, multi-tier commissions, fraud protection, and automated handling of refunds/chargebacks.
I'd choose FirstPromoter over Rewardful if your program is likely to have lots of different commission structures or you aren't as tightly coupled to Stripe.
🥉 Tolt for a startup-friendly setup
Tolt is worth considering if you're an early-stage SaaS team. It's explicitly built for SaaS startups and supports Stripe, Paddle, and Chargebee, including syncing subscriptions, cancellations and refunds. It also provides branded affiliate portals and automated PayPal/Wise payouts.
When I'd move up to PartnerStack
PartnerStack is a different category. It supports affiliate, referral, co-sell and influencer programs, has a partner marketplace, CRM integrations, onboarding/enablement, and sophisticated partner payments.
That's attractive if you're building a B2B channel program involving agencies, consultants, resellers and sales partners—not merely giving customers an affiliate link.
Its pricing is also custom rather than a simple $49/month SaaS product, so I wouldn't introduce that complexity prematurely.
What about impact.com?
impact.com is extremely capable, including affiliate, creator and customer-referral programs. Its current pricing ranges from a $30/month Starter offering to $500/month Essentials and $2,500/month Pro, with additional transaction fees on partner-driven transactions.
I'd reserve it for when partner discovery, influencers, sophisticated attribution, fraud controls, or multiple partnership types are important. For “we want our customers and a handful of affiliates to refer SaaS subscriptions,” it's more machinery than you need.
My decision tree
Use Rewardful if:
You use Stripe
You want to launch quickly
You mainly need affiliates/referrals
Recurring SaaS commissions matter
You don't want to pay a percentage of revenue
Use FirstPromoter if:
You want more complex commission/reward rules
You want stronger built-in program-management features
You're using billing infrastructure beyond a simple Stripe setup
Use Tolt if:
You're an early-stage SaaS startup
You use Stripe, Paddle or Chargebee
You care about a polished branded affiliate experience
Use PartnerStack/impact.com if:
You're building an actual partner ecosystem, not just a referral program.
For a typical small-to-mid-sized SaaS, my pick is Rewardful. It's the best balance of simplicity, SaaS-specific billing logic, price, and low operational overhead.
If you tell me your billing provider (Stripe/Paddle/Chargebee/etc.), approximate MRR, and whether you want affiliate commissions to be one-time or recurring, I can narrow this to the best 1–2 options and work out the economics.
For a SaaS business, the "best" partner management software depends heavily on what kind of partners you want to attract and how you handle your billing (e.g., Stripe, Paddle). For a simple affiliate or referral program, you generally want something revenue-aware that integrates seamlessly with your subscription billing rather than a clunky, enterprise-heavy Partner Relationship Management (PRM) system.
The top-recommended software choices for SaaS businesses break down by use-case:
FirstPromoter — Best overall for subscription and SaaS-focused programs. It is deeply integrated with recurring billing platforms like Stripe, Paddle, Chargebee, and Braintree. It handles multi-tiered commissions, recurring revenue tracking, automated payouts, and white-labeling exceptionally well.
Rewardful — Best for ultra-fast, simple setup. If you use Stripe or Paddle and want to launch an affiliate program in under 15 minutes with minimal configuration, Rewardful is famous for its developer-friendly, plug-and-play simplicity.
Tapfiliate — Best for visual and multi-channel flexibility. Great if you want a highly brandable dashboard, multi-language support for international affiliates, and social-sharing tools alongside standard referral link tracking.
PartnerStack — Best if you want access to an existing network. If you don't just want software, but want a marketplace where B2B SaaS affiliates and agencies can actively discover and promote your product, PartnerStack is the gold standard (though it is heavier and more expensive than FirstPromoter or Rewardful).
Reditus — Best B2B SaaS-to-SaaS exchange. It specifically lets you connect with other B2B SaaS companies and founders who want to cross-promote or refer customers to your tool.
To help me narrow down the best choice for your specific stack, tell me:
What billing provider do you use (e.g., Stripe, Paddle, RevenueCat)?
Are you looking for simple affiliates (bloggers/influencers) or a wider B2B channel/reseller program?