Amazon FBM Prepaid Return Labels What Changes December 18 and What Sellers Should Do

Starting December 18, 2026, covered US seller-fulfilled Amazon returns require a prepaid return label, and heavy and bulky items are temporarily excluded, according to a seller notice reproduced in the Amazon Seller Forums. When a return request needs seller action, the seller has seven calendar days to upload a prepaid label in Manage seller-fulfilled returns or issue a full returnless refund. If neither happens, Amazon may refund the buyer without a return and debit the seller’s account. Labels sent only through messaging do not qualify.

Question	Answer
Start date	December 18, 2026
Scope	Covered US seller-fulfilled (FBM) returns
Requirement	A prepaid return label
Seller action window	Seven calendar days, for requests that need seller action
Valid actions	Upload a prepaid label in Manage seller-fulfilled returns, or issue a full returnless refund
Not valid	A label sent only through messaging
Possible consequence	Refund without return, with a debit to the seller account
Temporary exclusion	Heavy and bulky items

Because that notice was reproduced by a seller, not published as an official Amazon news post, confirm the wording against your own Seller Central account. Sources for this article were checked on November 4, 2026.

Three points keep readers from overreacting. Amazon-generated prepaid labels continue, and return eligibility is unchanged, per an Amazon moderator clarification. The buyer’s return-request date controls, so an earlier order can still be covered. And the first audit task is small: pull recent FBM return requests and sort them by whether Amazon generated the label or the request still needs one from you.

The core argument of this guide is simple. Amazon FBM prepaid return labels create a handoff problem, not a labeling problem. A purchased label, a message to the buyer and a warehouse receiving arrangement are each different from completing the required submission in Amazon. A returnless refund should be a deliberate decision, not what happens to a request nobody picked up.

Existing Amazon Labels Continue, but Some Workflows Need Attention

Not every return becomes manual work. Prepaid labels and return eligibility are separate questions, and the change matters most where no Amazon-generated label exists.

Scenario	What to verify	Likely seller action
Amazon already generates the label	The request shows an Amazon prepaid label in your account	Monitor the return through receiving; no label upload
An eligible return is still unpaid	The request needs seller action and has no Amazon label	Upload a prepaid label or issue a full returnless refund within seven calendar days
Special category or heavy and bulky item	Needs verification: the temporary heavy and bulky exclusion, or the rules for Custom, Handmade and Dangerous Goods	Confirm treatment in Seller Central or Amazon help before assuming either way

Two cautions apply. Custom, Handmade and Dangerous Goods keep their applicable eligibility rules, and an exemption from Amazon labels is not blanket permission to use unpaid labels for an otherwise covered return. Also, do not define heavy and bulky using a carrier limit or an FBA size tier. Use Amazon’s own treatment for your account.

Prepaid does not always mean seller-funded. Amazon’s prepaid returns help and its refund options page cover how label costs are handled, including Free Returns and fashion restrictions. An Amazon moderator has also pointed to buyer-fault deductions under Amazon rules. Do not assume every uploaded-label cost is deductible.

Keep requirements and recommendations separate. The seven-day action and the label-or-full-returnless-refund choice come from the notice. Daily review, backups, earlier escalation and evidence retention are recommended controls, and the seven days does not replace any other authorization, response or refund deadline that applies to a request.

Audit Your Return Process Before December 18

Use this table as the working audit. Where you do not know an answer, write “needs verification” instead of counting it as a pass.

Check	Action to take	Owner to confirm	Evidence complete
Affected SKU groups and label method	List FBM SKU groups and how each is labeled today	Person who manages Seller Central returns	SKU list with label method per group
Eligibility and exceptions	Flag special categories and heavy and bulky items	Compliance or catalog lead	Each group marked eligible, excluded or needs verification
Accepted receiving destination	Confirm which location receives returns	Operations lead or partner contact	Written confirmation of address
Owner and backup	Name who monitors, labels, uploads and approves refunds	Support manager	Named owner and acknowledged backup
Applicable clocks and internal escalation	Record the seven-day window and any other clocks, plus an earlier internal trigger	Support manager	Documented escalation point
Correct Amazon submission	Verify the label or refund is recorded in Amazon	Assigned owner	Submission shown against the request
Order and RMA receiving match	Confirm the receiver can match the item to the order and RMA	Receiving lead	Match confirmed before arrival
Unresolved gaps and target dates	List open items with dates	Operations lead	Gap list with owners and dates

No single owner fits every seller. In some businesses support handles requests, in others operations or a fulfillment partner does, so name the role you actually have.

Identify Affected SKU Groups

Action: group FBM SKUs by current label method, and mark special categories and heavy and bulky items as needs verification. Owner to confirm: whoever manages returns in your seller central account. Evidence: a completed list showing label method per group.

Confirm the Receiving Location

Action: confirm which address accepts returns and how it identifies an item against the order and RMA. Owner to confirm: operations lead or your fulfillment contact. Evidence: written confirmation of the destination and the matching method.

Assign an Owner and Backup

Action: name one person or team to monitor requests, buy and upload labels, and approve returnless refunds, plus a backup for absences and weekends. Owner to confirm: support manager. Evidence: roles in writing and a backup who has acknowledged the duty.

Test Submission in Amazon

Action: run one return through the required workflow, then verify the recorded submission inside Amazon instead of trusting a sent message. Owner to confirm: the assigned owner, with a second person reviewing. Evidence: a record showing the submission attached to the request.

Monitor Unresolved Actions

Recommended control: review open requests that need action every day, and escalate earlier than day seven. Track any other applicable authorization, response or refund clocks separately. Owner to confirm: support manager. Evidence: a dated review log and a gap list with target dates.

Test a Return From Request to Receiving

This is a hypothetical example, not a Cahoot customer case. An eligible US FBM return has no Amazon-generated prepaid label. The seller has confirmed a receiving address, assigned a support owner and a backup, and chosen retrieval.

The owner purchases a label and sends it to the buyer by message. During verification, the owner finds the label is not attached to the Amazon return request. The owner uploads it through the required workflow and confirms the recorded submission within the applicable deadline. The warehouse confirms it can match the order and RMA before arrival, and physical receipt and condition are recorded later.

Each step proves something different:

• Purchased label: postage exists, but Amazon may not know about it.
• Message to the buyer: the buyer may have the label, but a messaging-only label does not qualify.
• Warehouse booking or arrangement: the receiver is ready, but nothing is submitted.
• Recorded submission in Amazon: the required action is complete.
• Physical receipt and condition: a separate check that happens after the item arrives.

The failed handoff here was the gap between sending the label and attaching it. Detect it by checking the request itself, not the outbound message. Correct it by uploading through the required workflow, then record the fix in the gap list so the owner catches it next time.

Decide Deliberately When an Item Should Come Back

Sometimes a full returnless refund is the right call. It should be chosen on purpose, not reached by default after a missed window. Return handling and recovery costs are covered in Cahoot’s returns economics guide; here is one compact comparison.

Illustrative assumptions only: both paths include the same full customer refund, so compare incremental recovery after that refund. Do not count the original sale, the refund, original inventory cost or outbound shipping again. This is not total order profit.

• Expected recoverable inventory value after condition loss and future selling costs: $30
• Return postage: $9
• Receiving and inspection: $6
• Incremental recovery: $30 – $9 – $6 = $15

If damage or delay cuts expected recovery to $10, the result is $10 – $9 – $6 = -$5. In that case a deliberate returnless refund may cost less than retrieval. These figures are not carrier quotes, Cahoot fees or measured results, and the math never overrides policy or safety obligations.

Confirm Responsibilities With Your Fulfillment Partner

Using a partner does not move the Amazon requirement off your account, and nobody should infer who does what. Agree it in writing.

If Cahoot fulfills your Amazon orders, confirm with your Cahoot contact who monitors Seller Central return requests, who purchases and uploads merchant-provided labels, who approves returnless refunds, and which location receives and identifies the items. Record those responsibilities and a backup in the worksheet.

Cahoot is an end-to-end ecommerce fulfillment operations suite, and the work here connects cost control, clear handoffs and marketplace performance. Whichever partner you use, order fulfillment services can receive returns, but receiving a package and submitting a label in Amazon are different tasks, so assign each one by name.

Use the Worksheet to Record Evidence and Close Gaps

The Amazon FBM Returns Readiness Worksheet is a four-page fillable PDF that turns the audit above into records:

• Page 1: affected SKU groups and the current label process.
• Page 2: the responsible person or team, a backup and the expected evidence.
• Page 3: one test return, with request date, applicable deadline, earlier escalation, action and submission evidence, plus a separate receiving check.
• Page 4: corrective actions, owner, target date, resolution evidence and an internal readiness status.

It is a planning tool, not Amazon certification. It has no calculator, automated reminders, prefilled Cahoot responsibilities or compliance score.

Download the Amazon FBM Returns Readiness Worksheet to identify affected return workflows, assign owners and backups, and record evidence that your process is ready.

The takeaway: before December 18, know which requests need your action, name who acts and who backs them up, and verify the submission is recorded in Amazon. For broader marketplace context, see the returns resource center.

Ready to start? Download the worksheet and complete pages 1 and 2 this week.

Frequently Asked Questions

Does Amazon still generate prepaid return labels?

Yes. An Amazon moderator clarified that Amazon-generated prepaid labels continue and return eligibility is unchanged. The new action applies to covered requests where the seller must provide the label.

Does prepaid mean I must pay for every return?

Not necessarily. Prepaid describes how the label is provided, not who bears the cost. Amazon’s prepaid returns help and refund options page cover Free Returns and fashion restrictions, and buyer-fault deductions may be available under Amazon rules. Do not assume every uploaded-label cost is deductible.

Does this apply to orders shipped before December 18?

It can. An Amazon moderator clarified that the buyer’s return-request date controls, so an earlier order may be covered if the request comes on or after the effective date.

Can I send the return label through Buyer Seller Messaging?

Not as the required action. According to the seller notice, labels sent only through messaging do not qualify. Upload the label in Manage seller-fulfilled returns, or issue a full returnless refund, within seven calendar days.

Are heavy and bulky items or special categories treated differently?

Yes. The notice temporarily excludes heavy and bulky items, and Amazon’s clarification says Custom, Handmade and Dangerous Goods keep applicable eligibility rules. Verify how your products are treated in your own account.

Does using a fulfillment partner mean my Amazon return requests are handled automatically?

No. Responsibilities must be agreed, not inferred. Confirm who monitors Seller Central requests, who buys and uploads labels, who approves returnless refunds and which location receives the items, then record it in the worksheet.

• Category: Uncategorized
• Tag: Amazon, Returns, Strategy