The commission model you choose shapes every aspect of your affiliate program — which publishers you attract, how they promote your brand, what content they create, and how aligned their incentives are with your business outcomes. Most brands default to a simple percentage-of-sale commission without considering whether that model actually serves their program goals. This guide covers every commission model and when each is the right choice.
Percentage of Sale (Revenue Share)
The most common affiliate commission model. How it works: the publisher earns a percentage of the transaction value for every sale they refer; if a publisher refers a $100 sale and the commission rate is 10%, the publisher earns $10; percentage commission is calculated on the net sale value — typically after discounts but before taxes and shipping (confirm your calculation basis in your publisher agreement).
When percentage-of-sale is the right model: e-commerce with variable order values: percentage commission naturally scales with order value; publishers who refer high-AOV orders earn more, creating incentive to attract quality buyers; predictable margin economics: percentage commission is predictable as a percentage of revenue — if your gross margin is 60% and you commission at 10%, your affiliate channel COGS is roughly 17% of gross margin; category diversity: if you sell products across a wide price range, percentage commission rewards publishers who drive higher-value orders without requiring complex tiered CPA structures.
When percentage-of-sale is NOT the right model: new customer acquisition is the primary goal: percentage commission doesn't differentiate between new and returning customer orders; a publisher who drives 100% returning customer orders gets the same commission rate as one driving 100% new customers; if new customer acquisition is your primary affiliate goal, a new-customer-only commission or new-customer premium is more aligned. Flat-rate categories: for very low-AOV products (under $20), percentage commission results in commissions too small to motivate publisher effort; for very high-AOV products where order value is not correlated with publisher quality, percentage commission may over-reward publishers who reach wealthy buyers vs. buyers who genuinely need the product.
Setting the right rate: research competitor commission rates in your category (your network's publisher directory shows publicly listed competitor programs); calculate your maximum sustainable commission rate using: max commission = (AOV × gross margin %) × max affiliate channel COGS % — a $100 AOV product with 55% gross margin and 15% target COGS for affiliate = maximum commission of $8.25 (8.25%); set your rate competitively within what your margin economics support.
Flat Fee CPA (Cost Per Acquisition)
Fixed dollar amount per conversion regardless of order value. How it works: publisher earns a fixed dollar amount (e.g., $25) for every new customer they refer, regardless of the order value; CPA commission is commonly used for subscription products, SaaS, services, and lead generation.
When CPA is the right model: subscription and SaaS programs: flat CPA is appropriate when the 'purchase' is subscription signup rather than a variable-value transaction; $25-$100 CPA for subscription signups is common across software, health, and services categories; new customer-only programs: CPA structures are easier to limit to new customer conversions (commission only fires if customer ID is new), making them ideal when new customer acquisition is the primary goal; service and lead generation: programs where conversions are consultation bookings, quote requests, or service inquiries use CPA because there's no transaction value to percentage-commission; predictable publisher earnings: flat CPA is easier for publishers to predict their earnings from — 'I sent 50 clicks and got 2 conversions at $25 each, I earned $50' is simpler than variable percentage math.
CPA rate setting: CPA must be set against your customer lifetime value (CLV): if a new customer has a 12-month CLV of $200 and a 45% margin, the gross margin over 12 months is $90; a CPA of $30 represents 33% of 12-month gross margin, which is a high but potentially sustainable customer acquisition cost depending on your payback period target; CPA programs for subscriptions should model the expected conversion rate from trial to paid and commission accordingly.
Tiered Commission Structures
Differentiated commission rates by publisher performance or type. Performance tiers reward publishers based on conversion volume or GMV: Tier 1 (0-$5,000 GMV/month): 8% commission; Tier 2 ($5,001-$20,000 GMV/month): 10% commission; Tier 3 ($20,001+ GMV/month): 12% commission; performance tiers incentivize publishers to grow their affiliate revenue with your program and reward your most productive publisher relationships; tiers should be reviewed quarterly, not annually, so publishers can be promoted to higher tiers when their performance warrants.
Publisher type tiers set different rates by publisher type rather than volume: content publishers: 12%; deal/coupon publishers: 7%; comparison publishers: 9%; publisher type tiers compensate for last-click attribution bias by implicitly paying content publishers more per conversion to account for the introduction-phase traffic they drive; publisher type tiers require clear publisher type classification at onboarding and ongoing publisher type auditing.
New customer premium: additional commission for new customer conversions: standard commission (returning customers): 8%; new customer commission: 12%; the new customer premium directly incentivizes publishers to reach new audiences rather than re-targeting existing brand customers; new customer premium requires new/returning customer status to be passed in your conversion tracking.
Hybrid and Advanced Models
Recurring commission (for subscription programs): publishers earn an ongoing percentage of subscription revenue for each customer they referred, for as long as that customer remains a subscriber; recurring commissions at 20-30% of subscription value are common in SaaS, health subscription, and membership programs; recurring commissions create the strongest publisher alignment with customer retention — publishers who earn ongoing commissions are motivated to recommend programs with high retention rates and to refer quality customers who are likely to retain; recurring commissions also attract publishers who think long-term and create evergreen content.
Bonus and incentive structures: first-order bonus: additional one-time bonus for each publisher's first 10 conversions (new publisher activation incentive); seasonal bonus: commission uplift during key promotional periods (Q4, product launch periods); category bonus: premium commission for specific product categories the brand wants to grow (higher commission on new product category while establishing affiliate-driven growth).
Cost-per-lead (CPL) models: used for programs where the conversion is a qualified lead (consultation request, insurance quote, service inquiry) rather than a purchase; CPL rates reflect lead quality — $5-$50 for general leads, $50-$200 for high-quality qualified leads in financial services, insurance, and professional services; CPL programs require clear lead qualification criteria that are specified in the publisher agreement to prevent publishers from gaming low-quality leads for commission.
