Commercial utility
Amazon FBA Calculator
Estimate Amazon FBA profit, margin, ROI, and break-even price from selling price, costs, and fee inputs.
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Marketplace seller economics
Interactive calculator
Model Amazon FBA unit economics
Estimate Amazon FBA profit by combining landed product cost, inbound shipping, prep, referral fee, fulfillment fee, storage, and a return reserve.
Results
Net profit
$12.99
Margin: 32.5%
ROI
64.3%
Based on inventory and fulfillment cost base.
Total cost stack
$27.00
Fee load: 67.5%
Break-even price
$24.34
How to use it
- 01Enter the selling price and the landed product cost.
- 02Add inbound shipping, prep cost, referral fee percentage, fulfillment fee, storage fee, and any return reserve.
- 03Review net profit, margin, ROI, and the break-even selling price.
Result guide
- Referral fee and return reserve are modeled as percentages of selling price.
- ROI is based on the inventory and fulfillment cost base rather than the selling price.
- This page is a planning model and does not attempt to capture every Amazon marketplace fee edge case.
Why this page matters
Marketplace sellers need a fast profit model before sourcing or repricing products, so the page should stack the major FBA cost layers into one clear unit-economics view.
A useful FBA tool should also estimate break-even price because that gives sellers a clean floor for pricing decisions and ad-spend planning.
Frequently asked questions
Why include a return reserve?
Because returns, refunds, and damage allowances can materially affect real unit economics over time.
What does break-even price mean here?
It is the approximate selling price needed for profit to reach zero after the modeled cost stack is applied.
Can I use this outside the US marketplace?
Yes. The calculator is currency-agnostic as long as all inputs use the same currency.
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