Amazon FBA Profit Calculator

Work out amazon fba profit instantly with clear inputs, formula shown and shareable results.

About Amazon FBA Profit Calculator

Marketplace fulfilment charges a percentage referral fee plus a size-and-weight-based fulfilment fee, and together they commonly take a third of the selling price. Return on product cost matters as much as margin, because it drives how fast capital recycles.

Formula

Marketplace profit

Profit = price - product cost - price × referral fee - fulfilment fee

Worked example

With the default values below, Amazon FBA Profit Calculator returns Net Profit Per Unit of $820.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Selling Priceminimum 0: 2,400
Product Costminimum 0: 900
Marketplace Referral Feeaccepts 0–45 %: 15 %
Fulfilment And Storage Feeminimum 0: 320

Results

Net Profit Per Unit: $820.00
Net Margin: 34.167%
Total Marketplace Fees: $680.00
Return On Product Cost: 91.111%

Step by step

1Values used
2Marketplace profit
3Net Profit Per Unit= 820.00
4Net Margin= 34.167
5Total Marketplace Fees= 680.00
6Return On Product Cost= 91.111

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax or compounding frequency into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Figures are estimates based on the inputs given. Marketing performance, platform fees and conversion behaviour vary by audience, channel and season. Use this as a planning guide, not a forecast.
This is an estimate for general information and not professional financial, tax or legal advice. See the full disclaimer for the limits that apply to this kind of calculator.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Figures are estimates based on the inputs given. Marketing performance, platform fees and conversion behaviour vary by audience, channel and season. Use this as a planning guide, not a forecast.

Frequently Asked Questions

What is usually forgotten in the calculation?

Storage over time, returns processing, advertising cost per unit sold and inbound freight.

Why does return on cost matter?

Because inventory ties up cash. A lower margin with faster turns can generate more annual profit per unit of capital.