The scenario
This playbook applies to a B2B SaaS company, say one selling project management software to small agencies, that has reached the point where paid search and content are producing steady but slowing growth. Leadership wants an affiliate program. A typical trigger is a previous attempt through a self-serve network that produced a handful of coupon-site signups and a support headache before being quietly shut down.
The brief we are usually given is to design, launch and run an affiliate program that brings in new customers rather than discounting existing demand.
The challenge
Subscription businesses face specific affiliate problems. A commission on free trials rewards volume regardless of conversion; one on first payment ignores churn; recurring revenue share is attractive to partners but hard to forecast and easy to abuse. And without exclusions, the highest-volume partners are usually coupon sites intercepting customers already at the checkout. The job is a program whose economics hold up at scale and whose partners reach buyers the company is not already reaching.
Research and analysis
We start with the unit economics. Using billing cohort data, we model customer lifetime value by plan and acquisition source, then work out the maximum commission the company can pay per paying customer while keeping affiliate CAC within its payback target. That ceiling is fixed before a single partner is approached.
Next we map the publisher landscape: software review platforms, comparison sites, newsletters and YouTube channels aimed at the target buyer, consultants who recommend tools to clients, and adjacent SaaS products with overlapping customers. Each is scored on audience fit, likely incrementality and effort. Coupon and loyalty sites go into a separate tier with restricted terms.
Strategy
Commission model
A hybrid structure: a fixed payment on first paid conversion after a validation period, plus a capped recurring share for content and referral partners, priced under the LTV ceiling for each plan tier.
Partner tiers
Content, review and referral partners recruited first with hands-on onboarding; coupon and deal sites admitted later on reduced terms, with a last-click rule that excludes them when the customer arrives from another partner or a brand search.
Controls from day one
Postback tracking with sub-IDs, a validation window before payout, trademark bidding prohibited in the terms, and fraud monitoring designed in rather than added after the first bad payout.
The trade-off is slower early growth. Recruiting content partners one by one takes longer than opening a network listing, but the first cohort sets the standard for everything that follows, so we accept the slower start and say so in the plan.
Execution
Optimization
Monthly optimisation focuses on partner quality rather than partner count. Partners whose customers churn early move to fixed-fee terms; those whose customers retain well receive more placement support and a higher recurring share. Sub-ID data shows which review-site placements convert, which informs what the client pays for. Fraud monitoring is set up to catch self-referral and cookie-stuffing attempts early so they can be reversed and the partners removed before payout. Ongoing program management settles into a cadence of recruitment, activation, review and pruning.
How results are measured
Affiliate reporting is only trustworthy when it is reconciled against billing, so every figure comes from the partnership platform joined to the billing system rather than from partner-reported numbers. We report affiliate CAC on the same basis as paid channels so the program can be judged as a budget line, not an experiment.
- Active partners: the number of partners producing traffic in a given month, not the number signed up. A healthy program built through direct recruitment has a high proportion of active partners, unlike open-network programs where most never activate.
- Affiliate-sourced trials: trials attributed to the channel and their trial-to-paid rate, tracked through postbacks. A program on track shows trial volume building month on month and converting to paid at a rate comparable to the company’s own content traffic.
- Incremental share: the proportion of affiliate-attributed customers arriving from content and referral partners rather than coupon sites, measured by partner tier. This is usually the figure the finance team cares about most, and success means the majority of the channel’s customers coming from partners who reach new buyers.
What we have learned
- Price the commission before you recruit. An LTV-based ceiling stops the program buying customers at a loss and gives negotiations a clear boundary.
- Validate on payment, not signup. Postback tracking tied to billing removes the incentive for low-quality trial volume from the start.
- Recruit for incrementality. The slower route of direct recruitment produces partners who reach new buyers, which is what a SaaS affiliate program is for.
- Affiliate belongs in the mix, not on the side. Reporting affiliate CAC alongside paid channels in the performance marketing dashboard is what turns it into a budget line.