Amazon's Dec 18 Prepaid Return Label Rule for FBM: Who Has to Change

TL;DR

• From December 18, 2026, every US return on a seller-fulfilled (FBM) order needs a prepaid return label. Address-only labels, where the customer pays the postage, no longer count, except for now on heavy and bulky items.
• Most FBM sellers don't have to buy their own labels. Amazon confirmed in the Seller Forums that Amazon-generated prepaid labels keep working exactly as they do today.
• The sellers who have to change are the ones whose returns still go out address-only: mainly SKUs with a prepaid label exemption. For those returns you now have 7 calendar days from the return request to upload your own prepaid label in Manage Seller Fulfilled Returns, or refund in full without asking for the item back.
• Miss the 7 days and Amazon may issue a returnless refund and charge your account. Labels sent through Buyer-Seller Messaging don't count.
• Dec 18 is the return request date, not the order date. With the holiday return window running to January 31, 2027, most of your Q4 returns fall under the new rule.

The Real Question: Do I Have to Pay for Every Return Label Now?

In October, Amazon emailed FBM sellers that "all US returns for seller-fulfilled orders" will require a prepaid return label from December 18. Read on its own, it sounds like you'll be buying and uploading a label for every return. That's how a lot of sellers read it, and the Seller Forums threads filled up fast.

Amazon's moderators have since clarified it with the Returns team. The short version: if Amazon already sends your buyers a prepaid label, nothing changes for you. The rule closes one gap, the address-only label, and that gap mostly belongs to sellers who exempted SKUs from Amazon's prepaid labels. This guide covers who's affected, what happens to the exemption, and what to set up before the first holiday returns arrive.

What Amazon Announced

Here's what the email says, as quoted by sellers in the forums and confirmed by Amazon's moderators:

• Starting December 18, 2026, all US returns for seller-fulfilled orders (excluding heavy and bulky items) require a prepaid return shipping label.
• Address-only labels that make customers pay for return shipping no longer meet the requirement, except temporarily for heavy and bulky items.
• Within seven calendar days of a return request, you must either upload a prepaid label against the return in the Manage seller-fulfilled returns workflow, or issue a full refund without requiring the item back.
• If you do neither, Amazon may issue a returnless refund automatically and deduct it from your selling account.
• Labels shared through Buyer-Seller Messaging or anywhere outside the Manage Returns workflow don't count.

Then Amazon's moderator answered the follow-up questions in the forum:

• "This change does not remove Amazon-generated prepaid return labels." If Amazon provides prepaid labels to your buyers today, that continues.
• The update only removes address-only (unpaid) labels as an option for standard returns.
• Return-eligibility rules don't change. Custom, Handmade and dangerous goods keep their current return rules.
• For a return that isn't covered by an Amazon prepaid label, you provide your own (Amazon calls it a Merchant Prepaid Return Label).
• December 18 refers to the buyer's return request date. An order placed or shipped before Dec 18 is covered if the return request comes on Dec 18 or later.
• You can still deduct return shipping for buyer-fault returns in the refund workflow.

How We Got Here

Who Has to Change (and Who Doesn't)

What counts as heavy and bulky? Amazon's moderator pointed to its Large and Oversize definition: items that need special handling, have their own fulfillment and storage fees and cost more to ship, such as lawn and garden items, sports equipment and appliances. Anything that needs "Special Handling" or "White Glove Service" counts too. Amazon hasn't given a weight cutoff for this rule.

What Happens to the Prepaid Label Exemption

This is where sellers are most confused. In the forums, sellers ask how to get the exemption and whether it still matters. Here's the answer.

Until Dec 18, an exemption decided two things: Amazon didn't send its own label, and you could let Amazon give the buyer an unpaid, address-only label so the buyer paid the postage.

From Dec 18, it decides only one thing: whose label it is. An exempt SKU still needs a prepaid label within 7 days. The difference is that you buy it and upload it, instead of Amazon issuing it automatically. The "buyer pays" route is gone (heavy and bulky aside).

So the question isn't "how do I get an exemption?" anymore. It's "do I want to keep buying and uploading return labels myself, or let Amazon do it?"

Keep the Exemption If

• You get much better carrier rates than Amazon's return labels, or you need a carrier or service Amazon doesn't offer.
• The item needs special packaging or insurance you want to control.
• You have someone checking Manage Seller Fulfilled Returns every day, including Christmas week.

Opt Back In to Amazon's Labels If

• Returns are occasional and you don't want a 7-day clock on each one.
• You'd rather Amazon charge return postage automatically by return reason than handle it per return.
• You can't guarantee someone will upload labels within 7 days through the holidays. A missed deadline means a returnless refund: you lose the item and the sale.

How to Request an Exemption (Amazon's Steps)

1. Go to Return settings and click Manage return templates.
2. Pick the store, download the Prepaid label exemption template and follow its Instructions tab.
3. Choose the reason code for each SKU. Since February 8 the high-value reason is gone; the exemptions that remain are category based (check "Category exemptions" on Amazon's Prepaid returns help page).
4. Save the Prepaid exemptions tab as a tab-delimited (.txt) file. Upload it under Upload file with the right store selected.
5. Check the result: Status report, select Prepaid label exemption, Request report, then Download report. While a request is pending, the SKUs use your default return settings.

Some categories are exempt automatically, with no request: Handmade, certified preowned watches, non-physical items (warranties, digital software, digital coupons), items non-returnable by law and dangerous goods, and extra-large or heavy items.

How to Opt a SKU Back In

1. In the same Prepaid label exemption template, list the SKUs on the Prepaid exemptions tab.
2. Mark Yes in the Prepaid label column (column B) and leave the other columns blank.
3. Save as tab-delimited (.txt) and upload it in Manage return templates. Amazon says it takes effect within a few hours.

Your Dec 18 Setup Checklist

Most coverage stops at "the rule starts Dec 18." Here's what to actually do in Seller Central before the holiday returns land.

1. Find Out Which SKUs Are Exempt

In Return settings, open Manage return templates, go to Status report and pull the Prepaid label exemption report. That's your list of SKUs whose returns don't get an Amazon label today.

2. Change "Labels for Exempt Items" to Seller Prepaid

Return settings has a column called Labels for exempt items with two options: Seller prepaid (you provide the label) or Unpaid label (Amazon issues an unpaid mailing label). Unpaid is the address-only label that stops counting on Dec 18. Switch it to Seller prepaid, or opt the SKUs back in to Amazon's labels.

3. Set Up a Daily Returns Check

Exempt-SKU returns show up in Manage Seller Fulfilled Returns under Pending Actions, filter Pending Return label. To upload a label: Issue return shipping label, choose I will provide a pre-paid mailing label for this request, upload the label image, pick the carrier, type the tracking ID exactly as printed and enter the label cost.

Amazon's label rules: an unused label, portrait orientation, .jpg, .png, .bmp, .gif or .tif, 2 MB max, with the return address and tracking ID on it. Amazon checks the label in seconds and rejects mismatches, so the carrier and tracking ID you type must match the label. Amazon recommends uploading within 48 hours, even though the hard limit is 7 days.

4. Plan for the Holiday Calendar

A return requested on December 26 needs its label by January 2. A return requested on January 31 needs one by February 7. Put the returns check on someone's daily list through the first week of February, holidays included.

5. Fix Your Package Dimensions

Amazon prices its return labels from the package weight and size you've given it. In Return settings, the SKU attributes tab lets you update shipping package dimensions and weight per SKU (for SKUs currently listed). Changes apply to new return requests only. If you bought the original label through Amazon Buy Shipping, Amazon uses those dimensions automatically.

6. Decide on Returnless Refunds by SKU

For cheap, light or hard-to-resell items, a returnless refund can cost less than the label plus your time to inspect and restock. Amazon lets you offer returnless resolutions, and those requests don't need manual processing. Pick a price point below which you don't want the item back.

What It Costs: How Return Labels Are Priced

If you stay on Amazon's labels, here's how Amazon calculates what it charges you:

• Carriers: USPS for most items under 1 lb, UPS Ground from 1 to 150 lb.
• USPS: base rate by actual weight and zone, plus any USPS adjustments.
• UPS: base rate by billable weight and zone, plus surcharges, plus a fuel charge that "typically ranges from 13% to 15%."
• Billable weight is the greater of actual weight and dimensional weight, and UPS returns use length x width x height divided by 139.
• When you're charged: only when the buyer hands the package to the carrier.
• Who pays: Amazon charges the buyer or you depending on the return reason the buyer picks. "Defective," "Damaged upon arrival" and "Different from website description" are seller fault; "No longer needed," "Accidental order" and "Better price available" are customer fault.

A quick example: a 2 lb item in a 14 x 10 x 8 inch box. 14 x 10 x 8 = 1,120, divided by 139 is about 8 lb. On a UPS return label that box is billed as roughly 8 lb, not 2. A smaller box or accurate dimensions in SKU attributes is the cheapest fix you have.

To see what returns do to your margin per unit, run your numbers through our Amazon unit economics calculator.

Two more things to know: USPS doesn't offer Media Mail for returns, so books get regular labels. And if you sell items under 1 lb, enter the exact weight in ounces rather than rounding up to a pound; Amazon's moderator notes rounding can raise the return label cost even when it doesn't change your outbound label.

Where This Fits for FBM Sellers

This is the second returns change for FBM this year, after February's end of the high-value exemption, and it lands right on top of peak season. If you're weighing whether to keep products FBM at all, our FBA vs FBM guide walks through the trade-offs. For the other FBM rules that can switch offers off, see why Amazon deactivates FBM offers, and for the rest of the Q4 calendar, our Amazon Q4 2026 deadlines.

If you'd rather have someone run returns, settings and Account Health day to day, that's what our Amazon account management team does.

FAQ

Do I have to buy a prepaid return label for every FBM return after December 18?

No. If Amazon already issues prepaid return labels for your SKUs, it keeps doing that. You only provide your own label for returns that aren't covered by an Amazon label, mainly SKUs exempted from prepaid returns.

Does the December 18 rule apply to orders shipped before December 18?

Yes. Amazon says December 18 refers to the return request date. An order shipped earlier is covered if the buyer requests the return on or after December 18.

What happens if I don't upload a prepaid label within 7 days?

Amazon may issue a returnless refund automatically and deduct it from your selling account. The buyer keeps the item.

How do I request a prepaid return label exemption on Amazon?

In Return settings, click Manage return templates, download the Prepaid label exemption template, pick a reason code for each SKU, save the Prepaid exemptions tab as a tab-delimited .txt file and upload it. Check the result with the Prepaid label exemption status report.

Is Handmade exempt from Amazon prepaid return labels?

Yes. Handmade is automatically exempt, with no request needed. Amazon's moderator says Handmade sellers can still choose to send a return label or refund without a return.

Can I send the return label through Buyer-Seller Messaging?

No. Amazon only counts labels uploaded in the Manage Seller Fulfilled Returns workflow.

Can I still charge the buyer for return shipping?

On buyer-fault returns, yes: you can deduct return shipping in the refund workflow. On Amazon prepaid labels, Amazon charges the buyer or you automatically based on the return reason.

Are heavy and bulky items included?

Not yet. Address-only labels are still allowed for heavy and bulky items for now. Amazon hasn't said when that ends.

The Bottom Line

The December 18 rule sounds bigger than it is for most FBM sellers: if Amazon already issues your return labels, keep going. The real change is for SKUs with a prepaid label exemption. Their returns now need your own prepaid label within 7 days, or you eat a returnless refund.

Pull your exemption report this week, switch "Labels for exempt items" to Seller prepaid or opt those SKUs back in, fix your package dimensions, and put a daily returns check on the calendar through early February. That's an afternoon of setup, and it saves you from losing holiday returns to automatic refunds.

Sources

• Amazon Seller Central Help, Prepaid returns for seller-fulfilled orders (login required)
• Amazon Seller Central Help, Request exemption from prepaid returns for seller-fulfilled orders (login required)
• Amazon Seller Central Help, Set your return preferences (login required)
• Amazon Seller Central Help, Upload a prepaid return label (login required)
• Amazon Seller Central Help, Shipping costs for seller-fulfilled returns, Prepaid return shipping services, Return reason codes for prepaid returns, Update product shipping package dimensions and weight, Refund return shipping cost (login required)
• Amazon Seller Forums, Seller-fulfilled returns to require prepaid labels as of Dec 18, Can Someone Explain Amazon's New Return Label Policy and new return label policy for FBM (Amazon moderator replies, October 2026)
• Amazon Seller Forums, Prepaid return labels required for high-value items starting February 8 (News_Amazon) and Extended return window for items bought in November and December 2026 (News_Amazon)