Cookie duration is one of the most overlooked metrics when evaluating an affiliate program. It determines how long after someone clicks your link you can still earn a commission if they convert. Get this wrong, and you could be leaving significant revenue on the table.
How Affiliate Cookies Work
When a visitor clicks your affiliate link, a small tracking cookie is placed in their browser. This cookie tells the merchant "this visitor came from affiliate X." If the visitor purchases within the cookie window, you get credit for the sale. If the cookie expires before they buy, you earn nothing — even if your content was the reason they discovered the product.
Common Cookie Durations
24 hours — Amazon Associates and many large e-commerce programs. Extremely short, but Amazon's massive product catalog and high conversion rate partially compensate.
30 days — The industry standard for most programs. Gives the visitor about a month to return and complete a purchase.
60–90 days — Common among SaaS and higher-ticket programs. These products often have a longer sales cycle with multiple decision-makers.
120+ days — Premium programs that recognize the long buying journey for expensive products. Some offer 365-day cookies or even lifetime attribution.
Lifetime cookies — Once someone clicks your link, any purchase they ever make is attributed to you. Rare but incredibly valuable.
Why It Matters More Than You Think
Consider this scenario: you write an in-depth review of a $200/month SaaS product with a 30% recurring commission. A reader finds your article, clicks through, explores the product, but takes six weeks to get budget approval from their team.
With a 30-day cookie, you earn nothing. With a 90-day cookie, you earn $60/month for the life of that customer. The difference is thousands of dollars over time — from a single referral.
How to Factor Cookies Into Your Strategy
Match cookie duration to buying cycle. If you promote products that require research and comparison, prioritize programs with 60-day or longer cookies.
Layer your touchpoints. Create content that brings people back — email sequences, comparison pages, follow-up articles. Each return visit can refresh the cookie in many programs.
Check for last-click vs. first-click attribution. Some programs credit the last affiliate link clicked before purchase, while others credit the first. This changes how you think about funnel positioning.
Read the fine print. Some programs reset the cookie on every click, while others only honor the first. Know how your specific program handles it.
The Bottom Line
Cookie duration is not just a number — it is a multiplier on everything else you do. A program with great commissions but a 24-hour cookie requires very different content than one with a 90-day window. Factor it into every program evaluation.
Use our directory to compare cookie durations across hundreds of affiliate programs side-by-side.
