Amazon FBA Fee & Profit Calculator
Estimate per-unit FBA profit using the referral percentage and fulfillment fee that apply to your actual product.
How this calculator works
Referral fees are calculated as a percentage of the sale price. FBA fulfillment fees depend on the product's size, weight, and other Amazon rules, so this version asks you to enter the exact fulfillment fee shown in Seller Central or Amazon's Revenue Calculator instead of guessing a size tier. The April 17, 2026 fuel and logistics surcharge is calculated as 3.5% of the FBA fulfillment fee, not 3.5% of the sale price or referral fee.
Worked example
For a $29.99 sale with an $8 product cost, 15% referral rate, and $4.50 fulfillment fee: the referral fee is about $4.50, the fulfillment fee is $4.50, and the 3.5% surcharge on the fulfillment fee is about $0.16. Before any other per-unit costs, estimated profit is about $12.84, or roughly 42.8% of the sale price.
Source and assumptions
Last reviewed: September 16, 2026. Amazon states that referral fees vary by category and FBA fulfillment fees vary by product. Amazon's 2026 surcharge announcement states that the 3.5% fuel/logistics surcharge is applied to fulfillment fees. Use Seller Central or Amazon's Revenue Calculator for the exact fee inputs for your SKU.
What's not included
This tool does not automatically calculate storage, inbound placement, returns, removal/disposal, advertising, coupons, taxes, aged inventory, category-specific minimum referral fees, or other account-specific charges. Add known per-unit costs in the "Other" field and verify final economics in Amazon's own tools.
FAQ
Why did the old size-tier menu go away? Fulfillment fees depend on exact product characteristics and can change. Entering the actual fee shown by Amazon is more accurate than using a generic approximate tier.
Does the surcharge apply to the referral fee? No. Amazon's announcement says the 3.5% surcharge is calculated on fulfillment fees.
Is this the same as Amazon's Revenue Calculator? No. This is a quick planning tool. Amazon's own Revenue Calculator is the authoritative product-specific fee estimator.