Free Amazon FBA Profit Calculator

The FBA fulfillment fee depends on the size tier (small standard, large standard, small bulky, large bulky or extra-large), the billable weight and, since 2026, the selling price band (under $10, $10 to $50, over $50). Billable weight is the unit weight for small standard items and the greater of unit weight or dimensional weight (length x width x height / 139) for larger items.

From 17 April 2026 Amazon added a 3.5% fuel and logistics surcharge on US FBA fulfillment fees. It applies to the fulfillment fee only, not to referral or storage fees. The calculator includes it by default; untick the box to see the base fee.

The referral fee is Amazon's commission on each sale, a percentage of the total sales price that depends on the category. Most categories pay 15%. Some pay less at low prices (for example Beauty and Baby pay 8% at $10 or under) and every item pays at least $0.30.

Fees as a share of what you actually collect make products comparable. A product whose total Amazon fees are above about 35% to 40% of net revenue usually needs a price, packaging or sourcing fix before ads can be profitable.

No. Amazon charges higher peak fulfillment fees from 15 October to 14 January. If you know your exact fee from Seller Central, type it into the FBA fee override field and every result updates.

Break-even ACoS is your profit before advertising divided by your selling price. If you spend more than that share of the sale on ads, the sale loses money. Use our break-even ACoS calculator to turn it into a maximum bid.

It uses Amazon's published 2026 US rate card for non-apparel, non-dangerous goods. Your final fees can differ because of apparel or hazmat rates, inbound placement fees, low-inventory fees, returns and promotions. Seller Central's fee preview is always the final word.