Amazon FBM (Fulfilled by Merchant) is a fulfillment method in which the seller stores inventory, packs orders, ships products, manages customer service, and handles returns instead of using Amazonโs fulfillment centers. Sellers can fulfill orders themselves or use a third-party logistics provider while selling through Amazon.
For American sellers,โFBM may provide more control over inventory, packaging, and shipping fees. Delivery commitments, tracking, customer service, and the execution of returns are also on the seller.
In this guide, weโll explain what Amazon FBM is and how it works in 2026, the current operating guidelines, the seller-fulfilled returns policy, the tools that mitigate risk, and how you can tell if FBM, FBA, or a hybrid model makes the most sense for each of your SKUs.
What Is Amazon FBM?
Amazon Fulfilled by Merchant (FBM), also known as theโMerchant Fulfilled Network (MFN), indicates that the seller is fulfilling orders placed on Amazon. The seller might be operatingโfrom their own warehouse, retail store, a small packing facility, or a 3PL fulfillment provider. Amazon provides the marketplace and order managementโsystems, but the seller is still responsible for fulfillment metrics.
An FBM order goes through a straightforward process: The seller makes an offer, holds inventory, gets notified of an order in Seller Central, picks and packs the item, buys postage, ships the item with valid tracking, supports the buyer, and, if needed, processes the return or refund. Amazon advises sellingโFBM for a full catalog or in conjunction with FBA, depending on the products and business model.
How Does Amazon FBM Work?
- Create or find aโproduct listing and choose merchant fulfillment for the offer.
- Maintain sellable stock and keep quantities up to date for every storage location.
- Specifyโprocessing time, shipping destinations, delivery time, working days, cut-off time for orders, and delivery options.
- Once an order turns Unshipped, select the item, pack it tightly, purchase a label, and hand it to the carrier on time.
- Verify shipment with the appropriate carrierโand tracking number, unless a connected shipping tool takes care of that automatically.
- Track the delivery, replyโto the buyer message, and handle Returns in Seller Central.
How Much Does Amazon FBM Cost?
Amazon does not charge a separate universal โFBM fee.โ FBM sellers pay standard Amazon selling fees, including a selling-plan fee and referral fees. In the US, the Individual plan is $0.99 per item sold, while the Professional plan is $39.99 per month. Referral fees vary by category and are charged on each sale.
The larger cost difference is operational. An FBM seller pays for inventory storage, warehouse or 3PL labor, packaging, postage, software, customer service, failed deliveries, and returns. FBA converts more of those tasks into Amazon fulfillment and storage fees. Compare both methods with the same cost definition instead of comparing only Amazon fees.
FBM Contribution Margin Formula
FBM contribution margin = selling price + shipping revenue โ Amazon referral fee โ selling-plan allocation โ product cost โ storage โ pick-and-pack labor โ packaging โ outbound postage โ expected return cost โ advertising and other variable costs.
The right method is the one that protects margin while meeting the delivery promise consistently.
FBA vs. FBM: Which Should You Use?
Select FBM if you can store,โship, support, and recover returns more efficiently through your own operation than Amazon. Select FBA if you feelโthat Amazonโs network, Prime eligibility, customer service, and outsourced fulfillment are worth the fees. Theโdecision should be made by SKU, not by the brand alone.
| Factor | Amazon FBM | Amazon FBA | Decision signal |
|---|---|---|---|
| Who fulfills | Seller or the sellerโs 3PL stores pick, pack, and ship. | Amazon stores, picks, packs, and ships inventory sent to its network. | Use the channel with the stronger, more reliable capacity. |
| Cost model | Seller pays direct storage, labor, packaging, postage, software, and returns costs. | Seller pays FBA fulfillment, storage, and related program fees in addition to standard selling fees. | Compare fully loaded contribution margin per unit. |
| Prime eligibility | Standard FBM offers do not automatically receive the Prime badge. | Eligible FBA offers can receive Prime benefits. | Estimate how much Prime speed and visibility matter for the SKU. |
| Inventory control | Seller controls location, handling, packaging, and stock allocation. | Inventory is sent to and managed within Amazonโs fulfillment network. | FBM can suit specialty, slow-moving, fragile, bulky, or temperature-sensitive items. |
| Customer service and returns | Seller handles buyer support and seller-fulfilled returns, subject to Amazon policy. | Amazon handles customer service and returns for FBA orders. | Price the labor and return complexity, not only outbound shipping. |
| Best operational fit | Teams with dependable warehouse processes, carrier access, and accurate inventory. | Teams that need outsourced fulfillment or cannot consistently meet seller-fulfilled service targets. | Use a hybrid model when different products need different workflows. |
Can You Use FBA and FBM at the Same Time?
Yes. Amazon states that sellers can use FBM for all products or combine it with Fulfillment by Amazon (FBA). A hybrid approach can place fast-moving, standard-size products in FBA while keeping selected bulky, low-velocity, fragile, seasonal, or backup inventory in FBM.
Do not consider the hybrid approach โthe ultimate safeguard. Assign channel ownership for each unit, track your quantities, and make sure the FBMโoffer can deliver on its promise. If you are going to sell the same ASIN through both fulfillment methods, check your SKU and inventoryโconfiguration in Seller Central before launch to prevent overselling and misrouting orders.
Amazon FBM Requirements
The Amazon FBM guidelines include the seller account, listings, inventory management, packaging, shipping options, tracking, customer service, returns, and account health. The seller has to make a delivery promise that the operation and selected carriers can fulfill, and then demonstrate that performance, order after order.
1. Maintain an Active Selling Account and Compliant Offers
Amazonโselling plan based on how many orders you expect to place and what tools you need. Product detail pages and condition notes, pricing and quantity information, and shippingโcosts must be clear and truthful. Category authorizations, product restrictions, safety standards, and laws continue to be applicableโwhen it is merchant-fulfilled.
2. Keep Inventory Accurate
Only list products that are in stock and can be sold. Stock is synchronized through warehouses, stores, marketplaces, and 3PL systems, so an order from Amazon will not deplete inventory that has already been sold on another channel. Proper inventory management reduces pre-fulfillment cancellations and minimizes delivery delays due to stock searches or transfers.
3. Configure Realistic Shipping Settings
Specify your ship-from address, handling time, transit time, delivery regions, operating days, holidays, cut-off times, and order-handling capacity in Seller Central. Set the delivery address and orderingโdate. Total delivery time is the sum of the handling time, transit time, weekends, holidays, and any applicableโbuffer periods, explains Amazonโs seller-fulfilled order-management guidance. Promise the longest normal delivery window you actually can meet, not the best-case speed.
4. Pack Orders for Safe Delivery
FBM packaging must protect the product through normal carrier handling. Use a sturdy, right-sized box or mailer; cushion fragile items; fill space; seal the package securely; remove or cover old labels; apply a readable shipping label; include a valid return address; and follow carrier, category, hazardous-material, and international documentation rules.
Amazonโs packing and shipping guide recommends testing the package so the item does not shift inside.
5. Protect Seller-Fulfilled Performance Metrics
Amazonโs public seller policy guidance on shipping outlines the account-health and shipping requirements for merchant-fulfilled orders. Rather than using a spreadsheetโexclusively, look at the Account Health and Fulfillment Insights dashboards.
| Metric | US target | Operational control |
|---|---|---|
| Order Defect Rate (ODR) | Keep below 1%. | Negative feedback, A-to-z claims, and service chargebacks can contribute to defects. |
| Pre-fulfillment Cancellation Rate | Keep below 2.5%. | Stockouts and inventory-sync failures are common causes. |
| Late Shipment Rate (LSR) | Keep below 4%. | Confirming shipment after the expected ship date can affect seller-fulfilled eligibility. |
| Valid Tracking Rate (VTR) | Maintain at least 95% where the policy applies. | Use an Amazon-integrated carrier and submit the correct carrier and tracking ID. |
| On-Time Delivery Rate (OTDR) | Maintain at least 90%; Amazon recommends 95% or higher. | Measured on tracked seller-fulfilled units delivered by the promised date, before promise extensions. |
A 2026 policy update changed how Amazon applies the existing 90% OTDR requirement. Effective February 28, 2026, Amazon may deactivate the listings that contribute most to an OTDR decline instead of deactivating every seller-fulfilled listing by default. Significantly low or repeated non-compliance can still affect all seller-fulfilled listings.
Please consult the official OTDR update and the current Seller Central policyโbefore altering your shipping settings.
How to Sell on Amazon FBM
If you want to sell via Amazon FBM, you will need toโcreate a seller account, add or match a listing, choose merchant fulfillment, set up shipping, and establish an efficient order fulfillment system ahead of your first sale. Ideally, run the process through with actual cut-off timesโand carrier pick-ups to make sure the listing promise truly reflects what youโre capable of.
Step 1: Create or Access a Seller Central Account
Select the Individual plan if you have a small volume of sales, or the Professional plan if you need more advanced tools and expect a regular order volume. Fulfill allโidentity, payment, tax, and business verification requirements for the marketplace and category.
Step 2: Create the Listing or Add Your Offer
Relate your product to an existing detail page or create a new listing ifโallowed. Include valid product identifiers, title,โimages, attributes, price, condition, and quantity. Choose merchant fulfillment for the offerโto have orders sent to your operation by Amazon.
Step 3: Set the Fulfillment Origin and Shipping Template
Choose the ship-from location and define shipping templates for the regions andโservice levels you can provide. Set handling time, transit time, cut-off time, weekend operation, holiday,โorder capacity, and shipping cost. Use different templates if the products differ significantly in how they are handled.
Step 4: Build the Pick-Pack-Ship Standard
Document whereโeach SKU is stored, how orders are released, how items are checked, what packaging is used, how labels are bought, when carriers collect, and how exceptions are escalated. Aโsimple barcode scan or two-person check can reduce shipments of the wrong item or quantity.
Step 5: Process Only Confirmed Orders
Donโtโship a Pending order. When Seller Central says the order isโUnshipped, pick, pack, and ship it within the promised handling window. If the buyer sends you a cancellation request before shipment, respond promptly and follow the workflow in Seller Central.
Step 6: Confirm Shipment and Monitor Delivery
Enter the correct carrier, shipping service, and tracking number, or use an integrated tool that automatically verifies shipment. Checkโfor late, stuck, or exception scans daily. When an order requires attention, get in touch withโthe carrier and engage in Buyer-Seller Messaging.
Step 7: Review Performance and Profit by SKU
Track shipping charges, packaging,โlabor minutes, delivery performance, buyer contacts, return reasons, refund costs, and contribution margin. A SKU that looksโcheaper under FBM can become less profitable when you factor in late shipments, manual help, or a mountain of returns.
The Amazon FBM Returns Process in Seller Central
For US seller-fulfilled orders, Amazon automatically approves most return requests that are within the guidelines of the Amazon Return Policy. Requests outside the policy, or in an exception category above,โmay require the sellerโs review. The item, reason, return settings, label method, and Amazon workflow all affect the final result.
Step-by-Step: How to Handle an FBM Return Request
1. Set Return Controls Before Orders Arrive
Provide a valid US return address, check prepaid return-labelโoptions, and determine if returnless resolution should apply to any eligible low-value item(s).
2. Open Manage Returns
In Seller Central, navigate to theโOrders tab and select Manage Returns. Useโthis page to track requests, status, labels, refunds, and correspondence with the buyer.
3. Identify the Workflow
Many policy-compliant US returns are auto-approved. A request that is outside of policy or falls under aโwaiver category may require you to authorize, provide a label, issue a refund or gesture of goodwill, or deny with an explanation.
4. Respond When Seller Action Is Required
Amazon's publicly available returns policy includes a requirement to respond to authorization-required inquiriesโwithin 24 hours. Maintain all the order-relatedโmessages within the Amazon Buyer-Seller Messaging system.
5. Track the Package and Inspect the Item
Note the delivery date, item condition, accessories, serial numbers when applicable, packaging, and any difference in materialโfrom the shipped product. Retain clear documentation forโpartial-refund or reimbursement processes.
6. Process the Refund in Time
Refund atโFirst Scan can refund the order without waiting for the seller to receive the item if Amazonโs prepaid label is used. For eligible returns that donโt have this refund, the update to Jan 26, 2026 will provide sellers with fourโcalendar days from when they receive the returned item before Automated Refund may be triggered.
7. Close the Loop
Processโthe item to resell it, refurbish it, dispose of it, hold it in isolation, or research it; apply the return reason code; modify the listing or packaging when a pattern emerges; and assess whether an eligible refund issued by Amazon also supports a reimbursement claim through SAFE-T.
Use Amazonโs seller-fulfilled returns guide for the standard workflow and the 2026 refund-processing announcement for the four-calendar-day update. The Return shippingโcost liability may depend on the motive. Buyerโs regret could be treated differently from defective, damaged, or seller-error returns, so check the reason code before makingโadjustments.
Return information should be cycledโback into operations. The โnot as describedโ or wrong size returns could also be an indicator ofโlisting issues. Damage returns may indicateโpoor packaging or handling by the carrier. Item returns can highlightโpick errors. A returns process is more than a customer service function โ it is a diagnostic tool for catalog, inventory, and warehouseโquality.
FBM Shipping Tools and Software
Top FBM shipping tools minimize manual entry, improve delivery promises, validate tracking properly, and surface exceptions before they become account-health concerns. Begin selling on Amazon using native tools, thenโadd software as needed once volume or channel complexity drives a legitimate requirement.
Amazon Native Tools
Seller Central and Manage Orders
To review your orders that are Pending, Unshipped, Canceled, and Shipped; confirm shipments; manage messages; and check your Account Health.
Amazon Buy Shipping
Compare your eligible carrier services, purchase labels, confirm shipments automatically, and receive claims or OTDR protection when applicable.
Shipping Settings Automation
Use location and carrier data to calculate more accurate delivery dates.
Automated Handling Time and Order Capacity
Align promises with recent handling performance and daily throughput.
Multi-Location Inventory
Sync inventory by fulfillment location and improve the delivery promise from the nearest available stock.
Veeqo and the Amazon Seller App
Support multichannel shipping, labels, inventory visibility, mobile monitoring, and order actions.
When to Add Third-Party Software or a 3PL
Add an OMS, WMS, shipping platform, or 3PL when you need to manage multi-channel inventory synchronization, batch picking, bar code validation, carrier-rate shopping, brand rules, distributed inventory, or consolidated returns. Evaluate integrations, data ownership,โerror handling, support, and total cost before migrating the live order flow.
Consider the SalesDuo Guide to FBM Shipping Tools if you need a big-picture comparison of native and third-party systems. Weโre not trying to getโmore dashboards. It is not to eliminate the specific point of failure that endangers speed, accuracy, margin, or account health.
When FBM Makes Sense and When FBA Wins
FBM works for sellers whoโcan rely on their fulfillment capabilities and the product economics justify having direct control. FBA isโthe winner when the Amazon network, Prime experience, outsourced service, and scalable throughput provide greater value than the additional costs of the program.
FBM Is Often a Strong Fit When
- The item is heavy, bulky, fragile,โperishable, slow-moving, made-to-order, or has some other characteristic that makes it difficult to place economically in FBA.
- The brand has an established and efficient warehouse or 3PL network with competitive parcel rates.
- Custom packaging,โkitting, serial-number control, or specialized handling matters.
- The group can meet Amazonโs delivery expectations and handle customer service and returns inโa timely fashion.
- Once labor, packaging, postage, and expected returns are factored in, FBMโpreserves contribution margin.
FBA Is Often a Stronger Fit When
- The SKU is standard-size, fast-moving, and benefits materially from the Prime customer experience.
- The business does not have reliable warehouse labor, carrier pickup, weekend coverage, or customer-service capacity.
- Demand spikes would overwhelm the sellerโs daily order-handling limit.
- Amazonโs fulfillment and returns workflow costs less than the sellerโs fully loaded alternative.
- The brand needs to simplify operations so the internal team can focus on product, content, advertising, and growth.
Use a Five-Factor SKU Scorecard
Before changing fulfillment, score each SKU on five factors: fully loaded cost, delivery reliability, warehouse capacity, return complexity, and Prime value. Give each factor a documented owner and data source. Recalculate after carrier-rate changes, fee updates, packaging changes, peak-season shifts, or material changes in return rate.
| Decision factor | Question to answer |
|---|---|
| Fully loaded cost | Does FBM still win after labor, packaging, postage, software, support, and returns? |
| Delivery reliability | Can the current network meet the promised date at or above Amazonโs required performance? |
| Capacity | Can the operation absorb normal volume and peaks without extending handling or canceling orders? |
| Return complexity | Can the team inspect, refund, document, and recover inventory within the required window? |
| Prime value | Would the SKU gain enough conversion or customer value from FBA or Seller Fulfilled Prime to justify the operating cost? |
Build an FBM System You Can Operate Reliably
Amazon FBM is valuable when direct fulfillment creates better product economics without weakening delivery or customer experience. Start with accurate inventory, realistic shipping settings, reliable packaging, valid tracking, daily exception management, and a documented returns process. Then compare FBM and FBA using the same SKU-level cost and service scorecard.
For brands that need tighter coordination across listings, inventory, shipping, returns, and account health, SalesDuoโs Amazon operations management can support the operating model.
Book a 1:1 growth call with SalesDuo.
Frequently Asked Questions About Amazon FBM
1. What Is FBM on Amazon?
FBM means Fulfilled by Merchant. The seller stores inventory and fulfills orders placed through Amazon, either with its own team or a third-party logistics provider. The seller is responsible for packing, shipping, tracking, customer service, and seller-fulfilled returns while following Amazonโs marketplace and performance policies.
2. What Is the Difference Between FBA and FBM?
With FBA, Amazon stores inventory, ships orders, and handles FBA customer service and returns. With FBM, the seller or its 3PL performs those tasks. FBM offers more operational control, while FBA provides outsourced fulfillment and Prime benefits for eligible offers. Compare the fully loaded cost and service risk for each SKU.
3. Can You Use FBA and FBM at the Same Time?
Yes. Amazon allows sellers to combine FBA and FBM across a catalog. A brand might use FBA for fast-moving standard products and FBM for bulky, slow-moving, specialty, or backup inventory. Keep stock, SKUs, pricing, and order routing controlled so the hybrid model does not create overselling or fulfillment errors.
4. How Do Amazon FBM Returns Work?
Many US return requests that fall within Amazon policy are auto-authorized. Other requests may require seller review in Manage Returns. Depending on the workflow, the buyer may receive a prepaid label, a returnless refund, or Refund at First Scan. For applicable non-RFS returns received from January 26, 2026 onward, process the refund within four calendar days.
5. Is Amazon FBM Eligible for Prime?
Standard FBM offers do not automatically receive the Prime badge. Eligible sellers can pursue Seller Fulfilled Prime, which requires prequalification, a successful 30-day trial, and ongoing performance. The seller still fulfills the orders and must provide the fast, reliable delivery and returns experience required for Prime.
About the Author
A dynamic customer success professional, Rahul Gowda helps businesses grow smarter at Amazon by building strong relationships, solving tricky operational challenges with data-driven strategies. Beyond work, Rahul loves exploring new tech trends and experimenting with creative cooking.
