How Cost Per Sale (Affiliate) Works
Cost per sale is the most widely used affiliate commission model. When an affiliate drives a visitor to the advertiser's site and that visitor purchases, the affiliate earns a flat fee or percentage of the sale value. Attribution is typically managed by a 30-90 day cookie window — if the visitor returns and purchases within that window, the affiliate still receives credit. CPS rates vary enormously: physical goods range from 3-10% of sale value, digital products from 20-50%, and B2B software subscriptions from 20-30% of first-year ARR.
Why Cost Per Sale (Affiliate) Matters for B2B Marketing
CPS perfectly aligns advertiser and affiliate incentives — affiliates only earn when you earn, eliminating risk of paying for non-converting traffic. This makes CPS the preferred model for brands with limited affiliate budgets. The trade-off is that top affiliates may prefer guaranteed-payment models (CPL or CPC) if conversion rates are low or sales cycles are long.
Cost Per Sale (Affiliate): Best Practices & Strategic Application
Set CPS rates by working backward from LTV. If your average customer LTV is $2,400 and CAC target is $400, you can afford up to a $400 CPS commission while maintaining profitability. Benchmark against competitors using tools like SimilarWeb or by joining competitor programs and reviewing their affiliate terms.
Agency Perspective: Cost Per Sale (Affiliate) in Practice
One common mistake is setting CPS rates too low to attract quality affiliates. If your rate is 5% and the average order value is $50, affiliates earn $2.50 per sale — that's not motivating for serious content publishers. For low-AOV products, consider adding performance bonuses for affiliates who exceed monthly volume thresholds.
