Every US FBM Return Needs a Prepaid Label From 18 December

Amazon Seller Central announcement: 19 October 2026 · Effective 18 December 2026

From 18 December 2026, every US return on a seller-fulfilled order needs a prepaid return label supplied by the seller. The customer-paid, address-only label — where you send the buyer an address and they arrange their own postage — no longer satisfies the policy, with one temporary exception for heavy and bulky items.

This is the continuation of a direction Amazon set earlier in the year, when it removed the high-value exemption from the prepaid label requirement in February 2026. What was carved out for expensive items is now the rule for everything.

1. The Seven-Day Clock

From the moment a return is requested, you have seven calendar days to either supply a prepaid label or issue a full refund. The label has to be uploaded through the Manage seller-fulfilled returns workflow.

A label sent through Buyer-Seller Messaging does not count. Neither does one emailed directly. If it did not go through the returns workflow, Amazon’s systems have no record that you met the deadline.

2. What Happens If You Miss It

Amazon may issue a returnless refund: the customer gets their money back, keeps the item, and the amount is deducted from your account. You lose the sale, the unit and the shipping you already paid.

3. The Cost Lands on You Now

Return postage moves from the customer to the seller. On a healthy-margin product that is an irritation. On a low-priced FBM item with a high return rate, it can be the difference between a profitable SKU and one that quietly loses money on every return.

Reprice before December rather than after. Work out your actual return rate per SKU, multiply by realistic return postage, and check which products still clear.

4. What to Do Before 18 December

• Turn on automated prepaid return labels ahead of the date rather than handling them manually during peak.
• Review return settings SKU by SKU, and check how Amazon classifies your heavy and bulky items — that exemption is temporary and Amazon has not said how long it lasts.
• Build return postage into FBM pricing, starting with your highest-return-rate SKUs.
• Monitor returns daily through the holiday period. A seven-day clock over Christmas is easy to lose.
• Track automatic refunds and file SAFE-T claims promptly. The claim window is 30 days.

5. One Open Question

It is not yet clear whether an automatic returnless refund issued for a missed deadline qualifies for a SAFE-T claim, since no item is received back. Until Amazon clarifies that, treat the seven-day window as hard rather than recoverable — because the recovery route may not exist.