Amazon FBA vs FBM: Fees and Profit Compared (2026)

By the Profitvana Editorial Team · Updated August 2026

Every Amazon seller chooses how orders get fulfilled: Fulfillment by Amazon (FBA) or Fulfilled by Merchant (FBM). The referral fee is the same either way — the real difference is in fulfillment costs.

The referral fee applies to both

Whether you use FBA or FBM, Amazon charges a referral fee on each sale — typically around 15%, ranging from 8% to 20% by category. This comes out of the sale price for both methods, so it is not the deciding factor.

FBA: Amazon fulfills for you

With FBA, you ship inventory to Amazon and they pick, pack, ship, and handle returns. You pay a per-unit fulfillment fee based on size and weight, plus monthly storage fees.

The upside is the Prime badge, faster delivery, and far less work — which often means more sales. The downside is the extra fees and the risk of long-term storage costs on slow movers.

FBM: you fulfill yourself

With FBM, you store and ship orders yourself, so you avoid FBA fulfillment and storage fees entirely — you only pay the referral fee plus your own shipping and handling.

This gives you more control and can be cheaper for large, heavy, or slow-selling items, but you handle all the logistics and usually do not get the standard Prime badge.

Which is more profitable?

There is no universal winner. Small, light, fast-moving products often win with FBA because the fulfillment fee is low and the Prime boost lifts sales. Large, heavy, or slow items often win with FBM because you skip storage and fulfillment fees.

To compare, estimate your referral fee in our Amazon calculator and add your per-unit FBA or self-ship cost into the item cost field to see your real net profit each way.

Frequently asked questions

Is FBA or FBM cheaper?

It depends on the product. Small, light, fast-moving items usually win with FBA (low fulfillment fee plus the Prime sales boost). Large, heavy, or slow-selling items usually win with FBM because you skip storage and fulfillment fees.

Does Amazon's referral fee differ between FBA and FBM?

No — the referral fee (typically ~15%, ranging 8–20% by category) is charged on every sale regardless of fulfillment method. Only the fulfillment costs differ.

What extra fees does FBA add?

A per-unit fulfillment fee based on size and weight, plus monthly storage fees — and long-term storage surcharges on inventory that sits too long.