Affiliate commissions are performance-based payments that a business gives an affiliate when the affiliate generates a qualifying action, such as a sale, lead, app install or subscription. The affiliate receives a unique link, code or referral ID. When a customer uses that referral and completes the required action, the affiliate earns either a percentage of the sale or a fixed amount.
Affiliate Commissions at a Glance
| Term | Meaning |
|---|---|
| Merchant or advertiser | The business selling the product or service |
| Affiliate | The person, publisher or company promoting the offer |
| Affiliate link | A trackable URL containing the affiliate's referral ID |
| Conversion | The required action, such as a purchase or lead |
| Commission rate | The percentage or fixed amount paid to the affiliate |
| Attribution window | The period during which a referral can receive credit |
| Affiliate network | A platform that connects merchants and affiliates and manages tracking and payments |
How Does an Affiliate Commission Work Step by Step?
An affiliate commission works by connecting a tracked referral to a qualifying customer action. The process usually follows these seven steps.
1. The Affiliate Joins a Program
An affiliate applies directly to a company's affiliate program or joins an affiliate network such as Awin or Impact.
The program sets out its commission terms, promotional rules, tracking methods and payment conditions.
2. The Affiliate Receives a Unique Tracking Link
The affiliate generates a link containing an ID that identifies the affiliate or campaign. The link might lead to a product page, landing page, sign-up form or app download page.
Some programs also provide unique discount codes or referral IDs.
3. A Customer Clicks the Link
The affiliate promotes the offer through a website, newsletter, social media post, video, podcast or paid advertisement.
The tracking system records the referral. Affiliate platforms may use cookies, URL parameters or server-to-server tracking to connect the click with a later conversion.
4. The Customer Completes the Required Action
The required action depends on the affiliate program. It may include:
- Buying a product
- Starting a subscription
- Submitting a lead form
- Creating an account
- Installing an app
- Requesting a quote
- Using a unique discount code
A click alone usually does not earn a commission. The customer must complete the action specified in the program terms.
5. The Program Attributes the Conversion
The tracking system decides which affiliate receives credit for the conversion.
Some programs use last-click attribution. Under this model, the affiliate responsible for the most recent qualifying click receives the commission within the program's referral period. Awin describes this as a standard attribution method.
Other programs may assign credit through a coupon code, first-party tracking or server-to-server tracking.
6. The Merchant Validates the Transaction
A commission may remain pending until the merchant confirms that the order was not cancelled, refunded or disqualified.
Amazon Associates, for example, bases commission income on qualifying purchases. Its program rules cover dispatch, qualifying revenue and disqualified transactions.
7. The Affiliate Receives Payment
After validation, the commission becomes payable according to the program's payment schedule.
The affiliate may need to reach a minimum payment threshold or wait until the relevant refund period has ended.
How Is an Affiliate Commission Calculated?
The basic formula is:
Affiliate commission = commissionable amount × commission rate
For example:
- Product price: $120
- Commission rate: 10%
- Affiliate commission: $12
The commissionable amount is not always the total shown at checkout. A program may exclude shipping, taxes, discounts, refunds, gift wrapping or other fees. Amazon's program policies, for example, define qualifying revenue after subtracting several of these charges.
Example of Affiliate Earnings
Suppose an affiliate generates:
- 1,000 clicks
- A 3% conversion rate
- An average order value of $80
- An 8% commission rate
The estimated earnings are:
1,000 × 3% × $80 × 8% = $192
This is the gross tracked commission before refunds, reversals, taxes or other program adjustments.
What Are the Main Types of Affiliate Commissions?
The main types are percentage of sale, fixed commission per sale, cost per lead, cost per action, recurring commission and tiered commission.
Percentage of Sale
The affiliate earns a percentage of the customer's qualifying purchase.
Example:
- $200 qualifying sale
- 5% commission
- Affiliate earns $10
This model is common for physical products, online courses and ecommerce stores.
Fixed Commission per Sale
The affiliate receives a set amount for each approved sale, regardless of the order value.
Example:
- $25 for every approved customer sale
This gives the company a predictable customer acquisition cost.
Cost per Lead
The affiliate earns money when a customer submits a qualifying form, requests a quote or completes another lead action.
Example:
- $8 for every approved insurance quote request
The customer may not need to buy anything for the affiliate to earn a commission.
Cost per Action
The affiliate receives a fixed amount for an action such as an app installation, free trial or account registration.
The action must meet the program's rules. A free trial that is cancelled immediately may not qualify.
Recurring Commission
Some subscription businesses pay commissions while the referred customer remains subscribed.
A software company might pay a percentage of monthly subscription revenue for a defined period. The program terms determine whether those payments continue indefinitely, stop after a set number of months or end when the customer cancels.
Tiered Commission
A tiered commission increases when the affiliate reaches a performance target.
| Monthly sales | Commission rate |
|---|---|
| 1 to 20 | 5% |
| 21 to 50 | 7% |
| 51 or more | 10% |
Affiliate platforms can support percentage-based and fixed commission structures, including different rates for different transaction groups.
What Is an Affiliate Attribution Window?
An affiliate attribution window is the period after a referral click during which a conversion can still be credited to the affiliate.
For example, with a 30-day referral window:
- A customer clicks an affiliate link on January 1.
- The customer returns directly on January 20.
- The customer completes the purchase.
- The affiliate may receive credit because the purchase occurred within the referral period.
The length varies by program. Awin gives 30 days as an industry example, but individual programs can use shorter or longer windows.
Attribution may fail or change when:
- The customer clicks another affiliate's link later.
- The customer uses a different device.
- Cookies are blocked or deleted.
- The customer purchases through an app.
- The customer uses an untracked coupon code.
- The order is refunded or cancelled.
- The program has channel-specific restrictions.
Affiliate programs may combine browser-based cookies with first-party or server-to-server tracking. These methods can help preserve referral data when browser restrictions or privacy settings affect cookie tracking.
Who Pays the Affiliate Commission?
The merchant or advertiser pays the affiliate commission. The customer usually pays the normal product price, while the merchant treats the commission as a marketing or customer acquisition cost.
An affiliate network may sit between the merchant and affiliate. The network can provide:
- Tracking technology
- Affiliate links
- Conversion reporting
- Commission calculations
- Fraud monitoring
- Payment processing
- Dispute management
The network may also charge the merchant a platform or transaction fee. That fee is separate from the affiliate's commission.
Why Might a Commission Be Rejected?
A commission may be rejected when the transaction does not meet the program's payment rules. Common reasons include:
- The customer returns the product.
- The order is cancelled.
- The payment fails.
- The affiliate violates program rules.
- The purchase uses an unauthorised coupon.
- The affiliate refers itself when self-referrals are prohibited.
- The conversion falls outside the attribution window.
- Another channel receives attribution.
- The transaction is fraudulent or duplicated.
Affiliate dashboards often show separate statuses such as pending, approved, reversed and paid. A pending commission is not the same as a commission that is ready for withdrawal.
Do Affiliate Links Cost Customers More?
Usually, no. The merchant generally pays the affiliate from its marketing budget rather than adding a separate affiliate fee to the customer's order.
The customer may still see a different final price because of taxes, shipping, promotions, currency conversion or an affiliate-specific discount. The affiliate commission itself normally does not appear as a separate checkout charge.
Do Affiliates Have to Disclose Commissions?
In the United States, an affiliate should clearly disclose the financial relationship when that relationship could affect how consumers evaluate the recommendation.
The Federal Trade Commission says an affiliate disclosure should be clear, conspicuous and placed close to the recommendation or affiliate link. A statement such as "I may earn a commission from purchases made through links in this post" explains the relationship directly.
The phrase "affiliate link" on its own may not be clear enough because some readers may not understand that the publisher receives payment.
Disclosure requirements can vary by jurisdiction, platform and type of promotion. Affiliates should check the rules that apply to their audience and location.
What Determines Whether an Affiliate Program Is Attractive?
The commission percentage is only one part of the calculation. Compare:
- Commission amount or percentage
- Average order value
- Conversion rate
- Cookie or referral window
- Recurring payment terms
- Refund and reversal rate
- Payment threshold
- Payment schedule
- Product demand
- Attribution rules
- Promotional restrictions
- Support for coupon codes and deep links
A 5% commission on a high-value product can produce more revenue than a 20% commission on a low-priced product. A lower rate with a strong conversion rate may also outperform a higher rate attached to a difficult-to-sell offer.
Before promoting a program, check what counts as a commissionable conversion, how long the referral remains active and when the merchant can reverse a payment.
Bottom Line
Affiliate commissions connect a tracked referral to a qualifying customer action. The affiliate shares a link or code, the customer completes the required action, the merchant validates the transaction and the affiliate receives a percentage or fixed payment.
The terms that matter most are the commission basis, attribution window, conversion rules, refund policy and payout schedule. Read those terms before promoting an offer.