How long do affiliate cookies last?
What a cookie window means
When a reader clicks your affiliate link, the merchant stores a small tracking file in their browser. If that reader buys within the cookie window, you usually get credit. Once the window closes, the sale may no longer count for you.
Windows differ a lot. Some programs use short windows, while others allow longer periods. Some networks also use last-click attribution, meaning the final affiliate link clicked gets the credit.
- Short windows reward quick decisions
- Longer windows help with big purchases
- Last-click rules can override earlier clicks
Working with cookie windows
Check the cookie length in each program's terms before you promote it. Products with long buying cycles, like software or travel, may suit longer windows better. You can mention that buying later may still count if the program allows it.
Be honest with readers about how links work. Keep a note of the window for each program you promote. Never promise a specific window or make claims you cannot back up from the program's own terms.
- Read the program's cookie policy
- Match the offer to the buying timeline
- Do not promise specific windows to readers
Common mistakes
- Assuming every program uses the same cookie length.
- Overlooking that a reader who clicks a competitor's link later can take the credit.
- Forgetting that ad blockers and private browsing can block cookies and drop tracked sales.
