Amazon FBA Fee Calculator

Profitability on Amazon hinges on three fee buckets that are easy to overlook: fulfillment, referral, and storage. This tool turns those charges into a net revenue figure per unit (price minus Amazon's fees) and a monthly projection, the starting point for pricing a product so it actually clears a margin.

Each fee type is applied to your own product data. Fulfillment is a per-unit charge driven by size and weight, referral is a percentage tied to your product category, and storage is billed monthly. To put numbers to it, Amazon's 2026 US rate card charges $5.04 to fulfill a large standard-size item priced $10 to $50 with a shipping weight of 1 to 1.25 lb, before the 3.5% fuel and logistics surcharge added on April 17, 2026. For large standard, bulky and most extra-large items the shipping weight is the greater of unit weight and dimensional weight (length × width × height ÷ 139); small standard uses unit weight only, and the rate also depends on the price band (under $10, $10 to $50, over $50). Referral fees are 15% in most categories, including Home and Kitchen, and 8% for consumer electronics, with a $0.30 minimum. The calculator works out the size tier and shipping weight from the package dimensions, adds the surcharge, and subtracts these fees and the product cost you enter from your price to reach profit per unit; a season switch shows the holiday peak rates.

Storage is where margins quietly erode, particularly on oversized or slow-moving stock, and inventory stored for 181 days or longer picks up an aged inventory surcharge on top of that. Inbound shipping to Amazon's fulfillment centers is another real cost that falls outside this tool entirely, so build that figure in separately before you treat any profit number as final.