How Long Does the Amazon Affiliate Cookie Last? (24 Hours, and the 89-Day Cart Exception)

The Amazon affiliate cookie lasts 24 hours. A cookie is a small note your browser saves after you click a link, and this one records which Associate sent the visitor. If the person buys during that window, the sale can be credited to you.

But 24 hours is the longest the window can be, not a promise that it will last that long. Amazon closes it early in two other situations, and most guides never mention them. There is also one case where the window stretches to 89 days.

Everything below follows the wording in the Amazon Associates Program Policies, where Amazon sets out how the window is measured. Amazon does not call it a cookie. It calls it a "session".

Amazon starts counting when someone clicks a link that carries your Associates tag. In Amazon’s own words, the session begins "when a customer clicks through that Special Link". A Special Link is Amazon’s name for a link that uses one of its tagged link formats: the Operating Agreement says such links "must properly use the special tagged link formats we provide".

So a link with no tag is not a Special Link, and no session begins. If the tag is missing from the web address, or the address was changed somewhere along the way, Amazon has nothing to record and nobody to credit. If you are not sure whether a link is tagged, here is how to tell.

This matters more than cookie length does. A link without a valid Associates tag never opens a window at all, because there is no Associate for Amazon to credit. Whatever the rules say about 24 hours does not come into it.

Amazon measures the window as starting when the customer clicks your link, and ending "upon the first to occur" of these three events:

• 0124 hours pass since the click.
• 02The person places an order. This covers normal products, not digital items such as Kindle books, Prime Video, or Amazon Music.
• 03The person clicks a different Associate’s link — another creator’s Amazon affiliate link, in everyday terms.

The first one is the famous one. The other two are where most creators are surprised.

Take the second. A lot of guides say you earn on everything the person buys in the next 24 hours. That is not how Amazon words it. The session ends when "the customer places an order", so the window closes at that moment. Anything they put in the basket before that order can still count for you. Anything they come back and buy two hours later does not, because that visit is no longer part of your session.

The third is the reason two creators never share the same click. If your viewer clicks your link, then watches another video and clicks that creator’s link before buying, your session has ended. Amazon’s wording is that the session ends when the customer clicks through "a Special Link to an Amazon Site that is not your Special Link". In everyday terms, the later link is the one in line for the credit, not yours.

This is the part that gets called the 90-day cookie. It is real, but the number is 89, and it does not work the way people usually describe it.

Amazon’s terms say a purchase can still qualify when the customer adds the product to their shopping cart during the session and completes the order no later than 89 days after their first click on your link.

Two details matter here. The item has to go into the cart while your session is still open, so inside that first 24 hours. And the 89 days are counted from the click, not from the day the item went into the cart.

There is one further limit worth knowing. Amazon’s terms add that "within 180 days of the purchase, the Product is shipped to, streamed or downloaded by, and paid for by the customer". A very long pre-order can fall outside that.

Amazon’s published rules describe the session. They do not promise that a click follows a shopper from one device or browser to another.

So if a viewer taps your link on their phone and then buys on a laptop later that evening, treat that as a click that may not be credited to you. The same goes for a private or incognito window, which usually clears what it stored when it closes. This is not something you can control, and it is not a mistake on your side. It is one reason the real number of sales behind your clicks is hard to pin down.

Even a perfectly tracked click can end with nothing. Amazon lists the orders that get taken back out again, and two of them deserve a creator’s attention:

• 01Any order where a cancellation, return, or refund has been started is disqualified.
• 02Any purchase that is not tracked or reported correctly because the links were not properly formatted is disqualified.

That second line is the quiet one. It puts the condition of your links inside Amazon’s own rules.

It is worth separating two problems that look the same from the outside. A link that has lost its Associates tag stops Amazon crediting anything to you, because no session begins at all. A link that still carries your tag but leads to a product nobody can buy is a different case: the session does start, and the viewer may still buy something else that day, but the sale you actually recommended cannot happen.

Cookie duration is the last step in a chain, not the first. A viewer has to watch the video, open the description, click a link that still works, and land on a product they can still buy. Only then do the 24 hours begin at all.

On a channel more than a year old, the chain usually breaks well before that point. Products sell out, listings get removed, and descriptions are copied from video to video carrying a tag that has since changed. Old videos lose affiliate income quietly for exactly this reason. Your Amazon reports show what was earned, not which link stopped working, so the cause does not show up anywhere you would think to look.

This is what link checking is for. A checker opens every link in your descriptions, follows it to where it really lands, and tells you which ones are broken, untagged, or pointing at something that can no longer be bought. AffiliScan does that across a whole channel, but the point holds whichever tool you use. Cookie rules only matter on links that still work.

So the honest answer to how long the Amazon affiliate cookie lasts is this. Twenty-four hours. Less, if the viewer orders or clicks someone else’s link first. Up to 89 days for something left sitting in a cart. And zero on a link that no longer carries your tag.