Free Amazon Break-Even Price Calculator
Enter your per-unit costs to find the minimum sale price that covers COGS, the FBA fee, and Amazon's referral cut — then the price you'd need for your target margin. The referral fee is a percentage of price, so the math isn't just addition; this tool solves it. Free, no login, runs in your browser.
How to calculate your break-even price on Amazon
Add your fixed per-unit costs (COGS, FBA fee, inbound shipping, and a returns allowance), then divide by one minus the referral-fee rate. Dividing — not just adding the referral fee — is the step most sellers miss, because the referral fee is a percentage of the final price, not a flat amount.
Why you can't just add up your costs
The referral fee is a percentage of the sale price you don't know yet. If you set price = costs + 15%, the referral fee on that higher price is more than you accounted for. Solving costs / (1 − referral rate) gives the true break-even price.
Frequently Asked Questions
- What price should I actually charge?
- Above break-even by enough to cover ad spend and leave profit. Enter a target margin and the tool gives the exact price that hits it after fees.
- Does this include advertising cost?
- No — this is your pre-ad price floor. Use the free break-even ACoS calculator to see how much of the margin above it you can spend on ads.