Wishlist guide · Everyone

How long the Amazon affiliate cookie actually lasts

By MySecretCart Editors · Updated June 2026

The standard Amazon Associates cookie lasts 24 hours from the moment someone clicks an affiliate link. If the shopper adds an item to their cart within that 24-hour window, attribution for that item extends until the cart expires — typically 90 days — so the affiliate is still credited if the order is placed later. Attribution is last-click: clicking a different affiliate link overwrites the first, and the session also ends early once an order is placed.

As an Amazon Associate, MySecretCart earns from qualifying purchases — and shares cashback back with you. Your price never changes. Full disclosure.

Most answers to this question are secondhand summaries. Ours isn’t: MySecretCart runs an Amazon Associates account — it’s what funds the cashback we pay back to wishlist owners — so the cookie window described below is something we watch play out in real reports, not something we read about. Here’s how the 24-hour session and the 90-day cart rule really work, what resets them, and what that means whether you’re the one sharing the link or the one clicking it.

The 24-hour session window

When someone clicks an Amazon affiliate link, Amazon starts a 24-hour session tied to that click. Anything the shopper orders within those 24 hours — not just the product the link pointed to — counts as referred by that affiliate, as long as the items qualify under the program rules. That “anything in the session” detail surprises people: click a link to a phone case, end up buying a coffee maker an hour later, and the coffee maker is credited to the same affiliate. The 24 hours is wall-clock time from the click, and it doesn’t survive being overwritten: the session ends early if the shopper places an order, or if they re-enter Amazon through a different affiliate’s link. It also isn’t extended by browsing — there’s no way to “keep it alive” by staying on the site. After 24 hours, a purchase made by typing amazon.com into the browser is attributed to nobody, with one important exception: the cart rule below.

The 90-day add-to-cart rule

The exception that makes the 24-hour window less brutal than it sounds: if the shopper adds an item to their cart during the 24-hour session, attribution for that specific item extends until the cart entry expires — typically 90 days. The shopper can close the tab, think it over for a month, and complete the order in week six; the affiliate whose link started the session is still credited for that item when it ships. Two boundaries matter here. First, the extension covers items added to the cart inside the original 24 hours — items the shopper adds later, after the session has lapsed, fall outside it. Second, it’s an extension of attribution, not of the session: the shopper isn’t “cookied” for 90 days of general shopping, only for the carted items. This is why “Amazon has a 90-day cookie” and “Amazon has a 24-hour cookie” are both half-true. The precise version: a 24-hour session window, with a per-item extension to roughly 90 days for anything carted inside it.

What resets or overwrites attribution: last click wins

Amazon attributes a referral to the last affiliate link clicked before the order. If a shopper clicks your link on Monday, then clicks a YouTuber’s link to the same product on Tuesday and buys, the YouTuber gets the credit — your session was overwritten the moment the newer link was clicked. The same applies in reverse: being the last click is all that matters, even if someone else did the persuading. A few other things end or reset the window: placing any order closes the session (a fresh click is needed to start another), and the 24 hours simply elapsing does the same. Things that do not break attribution, in our experience running this: switching from phone to desktop doesn’t carry the cookie over (sessions are per-browser, so a click on one device doesn’t credit a purchase on another), but ordinary behavior inside one browser — opening new tabs, browsing other products, leaving and coming back within the day — keeps the session intact.

What this means for you as a shopper

Three practical takeaways. First, affiliate links never change the price you pay — Amazon pays the commission out of its own margin, so the checkout total is identical with or without a referral. Second, if you want a specific creator, friend, or site credited for a purchase, click their link within 24 hours of buying — ideally right before checkout, since last click wins. Clicking their link last week and buying today credits no one. Third, if you’re not ready to buy, adding the item to your cart while the session is live preserves their credit for around 90 days, even if you complete the order much later. None of this requires an account, a code, or any action beyond the click itself — the attribution is invisible to you, which is exactly why so few shoppers know how it works.

How this window powers wishlist cashback

This same mechanism is the engine behind MySecretCart’s cashback. When someone buys from your shared wishlist, the click runs through our Associates link, Amazon credits us the commission under the rules above, and we share that commission back as cashback — same price, money back. It also explains the program’s honest fine print: cashback can only track purchases made within 24 hours of the click, because that’s the window Amazon itself credits, and a later click on someone else’s affiliate link overwrites attribution entirely. We’re not being stingy with the 24-hour rule — we’re passing through exactly the constraint Amazon’s cookie imposes on every affiliate, from the biggest review site to a shared family wishlist.

Who should skip this

If you just want to buy something on Amazon at the best price, none of this affects you — attribution never changes what you pay. This guide matters only if you care who gets credited for a purchase: creators and site owners tracking their commissions, or shoppers who want their click to count for someone.

How we chose

Written from operating experience: MySecretCart runs the Amazon Associates account that funds its cashback program, so the windows described here are ones we see in our own attribution reports. Details were checked against Amazon’s published Associates program documentation. Amazon can change these terms; this page reflects the rules as of June 2026.

Frequently asked

How long does the Amazon affiliate cookie last?

24 hours from the click. Any qualifying purchase made in that window is credited to the affiliate. Items added to the cart during those 24 hours get an extension: the affiliate is still credited if the order is placed before the cart entry expires, typically 90 days.

What is the 90-day add-to-cart rule?

If a shopper adds an item to their Amazon cart within 24 hours of clicking an affiliate link, attribution for that specific item extends until the cart expires — usually 90 days. It applies per item, only to items carted inside the original 24-hour session, and is not a general 90-day shopping cookie.

Does the Amazon cookie only apply to the product that was linked?

No. During the 24-hour session, any qualifying item the shopper orders is credited to the affiliate — not just the product the link pointed to. Click a link to a book and buy headphones an hour later, and the headphones count too.

What happens if I click two different affiliate links?

The last click wins. Clicking a second affiliate link overwrites the first affiliate’s session entirely, and whoever was clicked most recently before the order gets the credit. The session also ends when an order is placed or when 24 hours pass.

Do affiliate links make my Amazon purchase more expensive?

No. The price is identical whether or not you arrived through an affiliate link. Amazon pays the referral commission out of its own margin, so using someone’s link costs you nothing — it only changes who Amazon credits for the sale.

Why does wishlist cashback require buying within 24 hours?

Because the cashback is funded by the affiliate commission, and Amazon only credits that commission for purchases made within 24 hours of the click (or carted items bought before the cart expires). A purchase outside the window — or after clicking someone else’s affiliate link — generates no commission to share back.