FBA vs FBM: Which Amazon Model Fits Your Product?

With FBA (Fulfillment by Amazon), your inventory sits in Amazon's fulfillment centers and Amazon handles picking, packing, shipping, customer service and returns. With FBM (Fulfilled by Merchant), you or a logistics provider you choose ship each order. Which fits depends on the product's size and weight, its sales velocity, any personalization, and the cost of each model calculated under the same assumptions.

The right question isn't "which is better" but "which for this product." The decision can be made product by product: in the same catalog you can assign some products to FBA and ship others yourself.

The core difference

For the full mechanics of FBA, see our Amazon FBA guide.

Prime eligibility

Amazon says FBA products are eligible for free two-day shipping through Prime and that Prime eligibility can help boost conversions. How large that effect is depends on the product and category; measure it with your own sales data.

For FBM, the route to the Prime badge is Seller Fulfilled Prime. According to Amazon's page, prequalification requires a domestic US default shipping address, a Professional selling account and shipping performance thresholds; a 30-day trial follows, and performance is reviewed weekly. A seller shipping directly from outside the US doesn't meet the address requirement on its own and needs a US ship-from point.

Cost: who wins?

With FBA you pay fulfillment, storage and, where they apply, other FBA fees, and in return hand part of the operation to Amazon. With FBM those fees disappear, but your own shipping, packing, warehousing and customer-service costs, and your time, come in.

Compare with numbers, not instinct: Amazon's Revenue Calculator shows "Amazon fulfillment" and "Your fulfillment" results side by side for the same product. Enter your own shipping and operating costs on the "Your fulfillment" side. For every cost line see Amazon FBA costs, and for per-unit profit including costs outside Amazon, our FBA profit calculator.

Control and flexibility

FBM gives you control over packaging, brand touches (notes, custom boxes) and dispatch timing. With FBA, products are handled to Amazon's prep and packaging standards. Because Amazon stopped offering prep and labeling for FBA shipments in the US marketplace on 1 January 2026 (Amazon notice), prep is also your job, or your prep provider's, under FBA.

Operational load

With FBA, inventory planning and shipping into Amazon stay with you; per-order packing, shipping, customer service and returns sit with Amazon. With FBM all of it stays with you or your logistics provider. Your team's capacity is part of the decision.

FBA ties capital up in stock: model how much to send and when with the inventory planning simulator, and your cash need in the first months with the first-90-days cash-flow simulator, using your own figures.

When to choose which

• Consider FBA: standard products with repeat orders, where the FBA cost in the Revenue Calculator is acceptable and fast delivery matters to buyers.
• Consider FBM: personalized or made-to-order products, slow sellers, and products whose size or weight makes FBA costly.
• Use both: decide product by product; nothing requires the whole catalog to sit in one model.

FAQ

Is FBA or FBM more profitable? It depends on the product. Calculate both side by side in Amazon's Revenue Calculator with the same price and product details, then add your costs outside Amazon.

Can FBM listings get the Prime badge? Yes, through Seller Fulfilled Prime. Amazon requires a domestic US default shipping address, a Professional account and performance thresholds to prequalify, followed by a 30-day trial.

Do I need a Professional plan for FBA? No. Amazon states that FBA can be used with either the Individual or the Professional plan (Amazon FBA page).

Can I use FBA and FBM in the same account? Yes. The fulfillment method is chosen per product: Amazon ships the products you assign to FBA, and you ship the rest.

Does Amazon prep my products under FBA? In the US marketplace, not since 1 January 2026. You or a prep provider handle prep and labeling (Amazon notice).

The takeaway

FBA and FBM aren't mutually exclusive; the decision is made per product. Size and weight, sales velocity, personalization and the cost of each model under the same assumptions decide it. Prime eligibility comes with FBA; with FBM you have to meet the Seller Fulfilled Prime requirements.

To work out which model fits you, there's Amazon consulting; for the full picture see our Amazon FBA guide.

Sources and scope

• Amazon, Fulfillment by Amazon: FBA scope, Prime eligibility, FBA cost lines, use with both selling plans
• Amazon, Seller Fulfilled Prime: prequalification requirements, 30-day trial, weekly performance review
• Amazon, Estimate fees and costs (Revenue Calculator): comparing FBA with your own fulfillment
• Amazon, Selling fees and plans: selling plan and referral fee structure
• Amazon Selling Partner API, US FBA prep and labeling services to end January 1, 2026: end of FBA prep and labeling in the US

This article is general information, not legal, tax or financial advice. Program rules and fees can change; check the official page before deciding. Information checked on 14 October 2026.