How to Find Lost Amazon Associate Tags on Your Site

Short answer: Crawl your site for outbound links to amazon.com, follow each one to its final destination, and check whether the tag= parameter survives the redirect chain. Anything without a tag earns you nothing.

How tags get lost

An Amazon affiliate URL looks like https://www.amazon.com/dp/B0CJL12345?tag=yourname-20. The tag is what credits the sale to you. It can vanish in five common ways:

Manual edits. A writer copy-pastes a product URL from the address bar without your tag.
Plugin rewrites. A WordPress plugin (Pretty Links, ThirstyAffiliates, Genius Link) overwrote the URL but lost the tag in the rule.
Shortened without the tag. A bit.ly or t.co shortener forwards whatever URL it was given, parameters included — so the real risk is shortening a URL that never had your Associate tag attached in the first place.
Region routing. A geo-redirect sends a UK visitor to amazon.co.uk but uses your US tag, which does not exist on the UK marketplace.
Cache bug. An aggressive page cache served an older version of a post written before tags were standardised.

The 4-step audit

1. List every Amazon outbound link

Run any site crawler and filter for the amazon. hostname. Export the list with the source page so you know where to fix.

2. Follow each link to its final URL

Use a redirect chain checker. The final URL is the one that matters, not the link in your HTML. Our free redirect chain checker handles this.

3. Confirm the tag survived

Search each final URL for your tag. The pattern is straightforward: tag=yourname-20. Anything missing the tag is a lost sale.

4. Confirm the regional tag is right

If a US visitor lands on amazon.de, your US tag is useless there. Either set up Amazon OneLink so each region uses its own tag, or restrict redirects to the matching marketplace.

Fixes worth doing once

Pick one canonical link format and document it. Example: https://www.amazon.com/dp/{ASIN}?tag={STORE_TAG}.
Standardise on a redirect plugin (or no plugin) and audit its rules quarterly.
Enable OneLink in the Associates dashboard. It removes the regional-tag headache for free.
Add the tag parameter to your Amazon link template in your CMS so it cannot be omitted.

Make the recheck automatic

An audit you run once tells you about today. Tags get lost again every time someone publishes a post or updates a plugin. Continuous monitoring catches each new gap within hours. Run a free scan to see how many of your Amazon links currently lack a tag.

Frequently asked questions

How do I know if my Amazon tag is missing?

Click your own affiliate link, copy the final Amazon URL from the address bar, and search it for your store tag (it looks like yourname-20). If the tag is absent, the click will not credit you.

Why does Amazon strip my tag sometimes?

The most common causes: a redirect through a non-Amazon domain that drops query parameters, a shortened URL that lost the tag during shortening, a third-party plugin that overwrote the link, or a regional bounce to amazon.de or amazon.co.uk where your tag is not registered.

Can I have one tag for all Amazon regions?

No. Amazon Associates is a separate program per marketplace. You need a registered tag for each region (US, UK, CA, DE, JP, and so on) and a region-aware redirect on your site.

What is OneLink and does it fix this?

OneLink is Amazon's geo-router. It rewrites your US tag to the matching regional tag if you have registered for that marketplace. It only works if you have completed the OneLink setup in your Associates dashboard.

How fast do lost tags add up?

A single high-traffic article losing its tag for one quarter can cost a mid-size publisher four figures. Most publishers find the leak only when the next quarterly statement arrives.