Amazon FBA Profit Calculator (Free)

How this calculator works

For each unit sold, the tool subtracts every cost from the selling price:

• Referral fee = selling price × referral rate.
• Returns allowance = selling price × returns rate (a provision for refunds and replacements).
• Total costs = product cost + referral fee + fulfillment fee + shipping & preparation + advertising + returns allowance + other expenses.
• Profit per unit = selling price − total costs.
• Net margin = profit ÷ selling price. ROI = profit ÷ total costs.
• Break-even price = fixed costs ÷ (1 − referral rate − returns rate): the price at which profit is exactly zero.

What to enter

• Use the referral rate for your category (the percentage, e.g. 15 for 15% — most categories sit in a common band, but confirm the current rate for yours).
• Enter the FBA fulfillment fee for the product’s size and weight tier. This calculator does not guess it, because fees depend on dimensions and change over time.
• Include a realistic returns allowance and your average advertising cost per unit if you advertise.

Important

This is an estimate built from the figures you enter. It does not include one-off costs (onboarding, long-term storage that grows with time), currency conversion, tax or category surcharges unless you add them under “other expenses”. Amazon’s own fee schedules are the authority — always confirm current rates in Seller Central before setting prices.