Amazon's December 18 return rule: a prepaid label in seven days, or Amazon refunds for you
If you ship your own Amazon orders, the address-only return label is going away on December 18. After that, every US return needs a prepaid label within seven days, or Amazon may refund the buyer and take it from your balance.
From December 18, 2026, Amazon sellers who fulfill their own US orders must give buyers a prepaid return label for every return except heavy and bulky items. Within seven calendar days of each request, upload a label in Manage seller-fulfilled returns or issue a full returnless refund. Otherwise Amazon may refund the buyer automatically and deduct it from your account.
What changes on December 18
If you sell on Amazon and ship orders yourself, a quiet email from the Amazon Services team changes how returns work. According to PPC Land, which reported the email on October 19, 2026, starting December 18 every US return on a seller-fulfilled order needs a prepaid return label. Heavy and bulky items are the one exception, and Amazon calls even that temporary.
The address-only label, where the buyer gets your return address and pays postage, stops counting. For each return request you then have seven calendar days to do one of two things: upload a prepaid label against the request in the Manage seller-fulfilled returns workflow, or issue a full refund without asking for the item back.
If you do neither, the email says a returnless refund may be issued automatically and the balance deducted from your selling account. One more line matters: labels sent through Buyer-Seller Messaging or any other channel outside the Manage Returns workflow don't meet the requirement. A label emailed to the buyer, however promptly, won't stop the clock.
Under the new rule, doing nothing is no longer free. It turns a return into a refund with no item coming back. For a cheap item that might be fine. For anything with real margin, a missed window means losing the sale and the stock.
Here's how we'd spend the time between now and then.
Sequence of work
From now to December 18
- Now
Sort recent returns by label type, value and size.
- Early November
Name the daily queue owner and write the refund rule.
- Late November
Run real requests through the upload workflow.
- December 18
Prepaid label or full refund within seven calendar days.
- After
Check daily for automatic returnless refunds.
Now: find out how many returns this touches
Start with your own numbers, not anyone's average. Pull the last few months of seller-fulfilled returns and sort them three ways.
By how they shipped back. Which ones already went out on Amazon's prepaid labels, and which used your address with the buyer paying. Amazon moved most seller-fulfilled returns into its prepaid program in February 2026, PPC Land notes, so the address-only group may be smaller than you think. That group is exactly what changes.
By item value against return postage. For low-cost items, PPC Land points out, a returnless refund may already be cheaper than paying to get the item back. Mark the items where that's true. They need a deliberate refund policy, not a label.
By size. Flag anything you believe counts as heavy or bulky. Neither the email nor the help page defines the category, so treat these as a question to settle with Seller Support, not an assumption.
Under the new rule, doing nothing is no longer free. It turns a return into a refund with no item coming back.
Early November: decide who acts, and when
Seven calendar days sounds generous until you count weekends, holidays and the person who handles returns taking time off. The clock runs from the return request, not from when the item reaches you.
Decide three things in writing.
Who checks the returns queue every day, including weekends in December, and who covers for them.
What triggers a returnless refund instead of a label. Write a simple rule based on item value and shipping cost so nobody has to judge each case.
How labels get made and uploaded. Whatever tool creates the label, the only version that counts is the one attached to the return request in the Manage seller-fulfilled returns workflow. If your team used to send labels by message, retrain them now, and write the steps down for whoever covers the queue over the holidays.
If you run returns through a warehouse partner or a returns app, ask them directly whether they upload labels into that workflow or send them some other way. The answer decides whether you're covered.
Late November: test the path end to end
Before peak season, walk real requests through the new process while address-only labels still work, so a mistake costs nothing.
Time how long a request sits before someone touches it. Check that the label appears against the return in Seller Central, not just in your carrier account. Confirm your refund timing still meets the existing rules on the help page: refunds within two business days of receiving a return, and responses to manual authorization requests within 24 hours.
Watch international returns too. As captured on October 19, the help page gave sellers two days to provide a prepaid label for returns with a non-US return address, with a returnless refund or a US domestic return address as alternatives. The email talks about a consistent process for US and international returns but doesn't say whether the two days become seven. Until Amazon says otherwise, plan for the shorter one.
If your returns run through more than one system, this is where it breaks. Our fulfillment operations work is usually about exactly this kind of handoff between a marketplace's workflow and your own warehouse. For the marketplace-operator side of the same question, see who pays return shipping on a marketplace.
Decision guide
What counts inside the seven days
| Consideration | Meets the requirement | Doesn't count |
|---|---|---|
| Label delivery | Prepaid label uploaded in Manage seller-fulfilled returns. | Label sent through Buyer-Seller Messaging. |
| Return address | Prepaid label the buyer doesn't pay for. | Address-only label, buyer pays postage. |
| Choosing not to take it back | Full refund without requiring the return. | Partial refund or waiting it out. |
| Missing the window | Not applicable. | Amazon may refund and deduct from your balance. |
December 18 and after: watch the deductions
From the effective date, check your selling account for automatic returnless refunds every day for the first couple of weeks. Each one is either a request your team missed or a case where a label didn't register. Find out which, and fix the cause.
December 18 also lands in the middle of the holiday return season. Last year, PPC Land notes, purchases made from November 1 to December 31, 2025 could be returned until January 31, 2026. If Amazon runs a similar extended window this year, the new rule will be tested by your busiest return weeks.
Keep a short log of anything unclear: a heavy item Amazon didn't treat as heavy, an exempt SKU that suddenly needed a label, a deduction you think was wrong.
The questions nobody has answered yet
PPC Land listed what the email leaves open, and it's worth tracking each one.
When does the heavy and bulky exception end, and what counts? Does the two-day international deadline become seven days? Do the SKU-level exemptions described on the help page survive? Can an automatic returnless refund issued because the seven days passed be reimbursed through a SAFE-T claim? As of October 19 the help page hadn't been updated to mention the change at all.
Check the Seller Central help page "Manage seller-fulfilled returns" again in early December and before you finalize your process. If it changes, update your rules.
If you want help mapping your returns process onto the new rule, or building the daily queue check so nothing ages past day seven, talk to us.
Related work: Paddle8.
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