CPS (Cost Per Sale)

Cost Per Sale pays the affiliate only when a referral results in a purchase. It is usually expressed as a percentage of the order value, though some programs use a flat per-sale fee. CPS aligns the affiliate's incentive directly with revenue and is the dominant model in retail and e-commerce.

Cost Per Sale pays the affiliate only when a purchase completes, and the amount is usually a percentage of the order value rather than a flat sum. Because the payout scales with basket size, the affiliate's incentive lines up directly with the advertiser's revenue — a larger cart means a larger commission. The sale must clear payment and survive any return window before the commission locks.

Advertisers favour CPS because they never pay ahead of revenue; the cost of sale is a fixed fraction of money already collected. This makes it the default for e-commerce and physical-goods programs where margins are known and refunds are common. Affiliates accept the higher bar of a completed purchase in exchange for percentages that can dwarf a flat lead payout on high-ticket items.

The nuances sit in what counts toward the commissionable amount. Shipping, taxes, discounts and gift cards are frequently excluded, so a 10% rate on a $200 cart might apply to $150 of net product value. Return windows also delay and endanger payouts, since a refund inside the window reverses the commission entirely — a real cost in categories like apparel where return rates run high.

CPS is the backbone of large retail affiliate networks and creator programs, and percentage rates have compressed over time as competition grew and margins thinned. Advertisers increasingly tier rates by product category to protect margin on low-markup items while still rewarding volume on profitable ones.