How Affiliate Commissions Are Tracked and Paid

The Tracking Link: How a Click Becomes Your Commission

Every affiliate relationship starts with a unique tracking link — a URL containing your affiliate ID. When a visitor clicks it, the merchant's system (or the affiliate network in the middle) drops a tracking cookie in the visitor's browser and logs the click with a timestamp, your ID, and often the campaign or creative that generated it. If that visitor later completes a qualifying action, the system matches the conversion back to your click and credits your account.

Modern tracking is more robust than cookies alone. Many programs now use server-to-server postback tracking, where the merchant's server notifies the network directly when a sale occurs, and fingerprinting or first-party tracking to survive cookie deletion. Still, the core idea is unchanged: click first, convert later, match the two events, pay the referrer.

If you run affiliate offers as an advertiser, understanding this plumbing helps you set profitable payouts — model them against your margins with our ad spend and ROAS calculator.

Attribution Windows: The Clock That Decides Who Gets Paid

The attribution window (often called the cookie duration) is the time limit between click and conversion. A 30-day window means you earn the commission if the visitor buys within 30 days of clicking your link; buy on day 31 and you earn nothing. Common windows range from 24 hours (typical for some large marketplaces) to 30, 60, or 90 days for software and high-consideration products.

Window Length	Typical For	What It Means for Affiliates
24 hours	Large general marketplaces	Only impulse purchases convert; volume matters more than consideration content
7–14 days	Fashion, gadgets, mid-ticket ecommerce	Covers a normal comparison-shopping cycle
30 days	Software, courses, subscriptions	The industry default; rewards review and tutorial content
60–90+ days	High-ticket B2B, finance products	Captures long sales cycles; fewer programs offer this

Also watch the attribution model: most programs pay on a last-click basis (the most recent affiliate link clicked before purchase wins), while a few use first-click or multi-touch splits. Last-click means a coupon site can "steal" your commission if the buyer clicks their link after yours — a well-known frustration in the industry.

Commission Models: CPA, Revenue Share, and Hybrids

Programs pay affiliates in a few standard structures. CPA (cost per acquisition) pays a flat bounty per sale or signup — common for credit cards, hosting, and lead-gen offers. Revenue share pays a percentage of the sale, sometimes recurring for the life of a subscription — the model that makes SaaS affiliate programs so attractive. Hybrid deals combine a smaller upfront bounty with ongoing revenue share.

Read the fine print on what "revenue" means: some programs pay on gross sale value, others on net (after refunds, discounts, and taxes). Recurring commissions may be capped at a number of months or reduced after year one. And nearly all programs exclude certain products or pay reduced rates on discounted items — a 50%-off sale day can halve your effective commission without warning.

Our guide on what makes a good ROAS pairs well here if you are buying traffic to send to affiliate offers and need to know your breakeven.

Validation, Holds, and Clawbacks

Commissions rarely become payable the instant a sale happens. Networks impose a validation or lock period — often 30 to 60 days — during which the merchant confirms the sale was legitimate and not refunded, fraudulent, or self-referred. Only after locking does the commission move to your payable balance.

Then come the payout mechanics: most programs set a minimum payout threshold (commonly $25–$100), pay on a monthly schedule (often NET-30 or NET-60 after month-end), and offer bank transfer, PayPal, or similar methods. Miss the threshold and your balance rolls to next month. Clawbacks let merchants reclaim commissions on refunded or charged-back orders even after payout — which is why that validation period exists.

• Self-referral bans: buying through your own link to earn commission is prohibited almost everywhere and can forfeit your whole balance.
• Trademark bidding bans: many programs forbid bidding on their brand terms in paid search.
• Coupon and cashback restrictions: some merchants exclude affiliates who only add a coupon code at checkout.

Choosing Programs That Actually Pay Well

Evaluate programs on more than the headline rate. A 50% commission on a product nobody buys loses to a 10% commission on a bestseller. Check the conversion rate and average order value (networks often publish EPC — earnings per click — which blends both), the cookie window, the payout threshold and schedule, and the program's reputation for on-time payment in affiliate communities.

Finally, diversify. Programs change terms, slash commissions, or shut down with little notice — affiliates who depended on a single program have learned this the hard way. Treat affiliate income like any revenue stream: track it, forecast conservatively, and never spend locked commissions before they clear.