Amazon FBA Profit CalculatorReferral fee, FBA and PPC included
Pick a category to apply the referral fee, then add product cost, FBA fulfillment fee and your PPC ROAS to see profit per unit and the break-even point for Sponsored Products.
Put the FBA fulfillment fee in 'Your shipping cost' and monthly storage per unit in 'Packaging and other'. The Professional plan ($39.99/mo) is a fixed cost and is not included. Defaults are reference values from public pages as of November 2026.
Connect orders, ad spend and product costs, and Laplace calculates contribution margin and real ROAS for every product every day, including bundle and gift costs.
How the amazon fba profit is calculated
- STEP 1
Referral fee = sale price × category rate
Most categories are 15%; some have lower rates under a price threshold.
- STEP 2
Put the FBA fee in shipping cost
Use the per-unit fulfillment fee for your size tier.
- STEP 3
Break-even ACoS = 1 ÷ break-even ROAS
A break-even ROAS of 250% equals a break-even ACoS of 40%.
Worked example
Result with the calculator's default inputs.
| Sale price | $39.00 |
|---|---|
| COGS | −$11.00 |
| Fees (Amazon (US)) | −$5.85 |
| Shipping | −$6.50 |
| Packaging & returns | −$1.42 |
| Ad spend (ROAS 300%) | −$13.00 |
| Contribution | $1.23 |
| Contribution margin | 3.2% |
| Break-even ROAS | 274% |
Related searches
- Amazon FBA profit calculator
- Amazon referral fee calculator
- Amazon seller fees
- FBA fee calculator
- Amazon profit margin
FAQ
What is Amazon's referral fee?
It depends on category, usually 8%–17%, with 15% for most. Beauty, health and grocery items at $10 or less are 8%. Amazon charges the greater of the percentage or a per-item minimum.
How do ROAS and ACoS relate?
ACoS is ad spend ÷ ad sales, the inverse of ROAS. Break-even ACoS = 1 ÷ break-even ROAS.
Do you store the numbers I enter?
No. Everything is calculated in your browser, and there is no sign-up or email gate. 'Copy result link' puts your inputs in the URL, so only people with that link see the same result.
Do I have to calculate every SKU by hand?
This calculator is for one product at a time. Laplace Analytics connects orders from your stores and marketplaces, ad spend and product costs, and calculates contribution margin for every SKU daily, including bundle and free-gift costs.