Amazon FBA vs FBM: Which Fulfillment Method Is Right for You
Practice4 minInnovialabs editorial team
In short
With FBA, Amazon stores, ships and serves orders and you get Prime, but you pay storage fees and carry inventory risk; with FBM you or your warehouse do the work, with more control and fewer fees but a heavier workload. Sellers from abroad usually go with FBA or FBM through a 3PL in the target country.
The short answer: what is the difference
- FBA (Fulfillment by Amazon) — you send goods to Amazon fulfillment centers. Amazon stores them, picks and packs orders, ships, handles returns and answers customers on delivery issues.
- FBM (Fulfillment by Merchant) — inventory stays with you or your logistics partner (3PL). Picking, shipping, returns and support are on you.
The referral fee is the same in both models — it depends on the category. The difference is who pays for logistics and how.
Comparison on the key factors
| Factor | FBA | FBM |
|---|---|---|
| Fees | Per-unit fulfillment fee (based on size and weight), monthly storage, aged inventory surcharges, inbound, removal and disposal fees | Your own costs for warehouse, packaging, carriers, staff and returns |
| Prime | FBA offers get the Prime badge automatically | Only through Seller Fulfilled Prime, with strict delivery and quality requirements |
| Inventory risk | Stock is locked in Amazon's network, capacity limits apply, aged stock gets more expensive | Stock is under your control and easy to move to another channel |
| Control | Amazon sets packaging, delivery speed and returns handling | You control packaging, inserts, carriers and communication |
| Workload | Lower: the main job is planning shipments | Higher: daily picking, shipping and customer support |
| Returns | Handled by Amazon under its policies | Handled by you, under marketplace rules and deadlines |
Where FBA wins
- Prime and buyer trust. Fast delivery and the familiar badge lift conversion.
- Scale without a warehouse. No need to hire packers or negotiate with carriers.
- Customer support for shipping and returns is on Amazon's side.
The price is ongoing storage and fulfillment fees. A slow-moving product in FBA turns unprofitable quickly.
Where FBM wins
- Bulky and heavy items, where FBA fees eat the margin.
- Slow movers and the long tail — no storage fees at Amazon.
- Products with special packaging, personalization or made-to-order assembly.
- Flexibility: the same stock can sell through your own site and other marketplaces.
Criteria for sellers entering from abroad
If you enter Amazon from, say, Uzbekistan, logistics to the target country becomes the main question:
- Delivery time. Buyers expect fast shipping. Sending each order individually from abroad is almost always too slow, so goods are usually brought into the target country in advance.
- Import and customs. Decide who acts as importer, how duties and taxes are handled and which documents and certifications your category requires.
- FBA prep. Labeling every unit, packaging to Amazon's requirements, box labels. Many sellers use a prep service in the target country.
- Returns. FBM needs a clear way to accept returns in the target country — usually your 3PL's address.
- Working capital. FBA requires paying for production, freight and storage long before sales come in.
In practice, sellers from abroad pick one of two setups:
- FBA: a batch is shipped to the target country, cleared through customs and prepped, then sent into Amazon's warehouses.
- FBM via a 3PL: the batch sits in a logistics partner's warehouse in the target country, which picks and ships orders.
How to decide
- Calculate the full cost per unit under both models: product, international freight, duties, prep, Amazon or 3PL fees, returns, advertising.
- Assess sell-through speed. Fast sellers are FBA candidates; slow ones fit FBM.
- Factor in size and weight. The bigger and heavier the item, the more carefully you should compare fees.
- Consider a hybrid: bestsellers via FBA, the rest via FBM, plus FBM as a backup when FBA stock runs out.
FAQ
Yes. The same product can be offered under both models, and different products can use different ones. A hybrid is often optimal: it reduces the risk of zero sales while an FBA shipment is in transit.