What it does
Enter your sale price, product cost, referral category and FBA size tier. The calculator shows Amazon's referral and fulfillment fees, your net profit and margin per unit, and the break-even ACoS for your ads.
Free tool
Amazon FBA fee calculator
See what Amazon takes per unit and what you keep, before you spend a cent on ads.
Amazon FBA fee and break-even ACoS calculator
Enter your product's numbers. Fees and break-even update as you type.
What you pay per unit: manufacturing + inbound shipping to Amazon. Everything except Amazon's fees and ad spend.
Amazon's commission on each sale. Minimum $0.30 per unit. Pick the closest category; Amazon's Seller Central fee schedule has the full list.
2026 $10–$50 base rate. The calculator applies the Low-Price FBA discount under $10 and the higher rate over $50. For your exact size and weight, check the fee schedule in Seller Central.
What Amazon takes
Referral fee
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FBA fulfillment (incl. surcharge)
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Total Amazon fees
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What you keep
Net profit / unit
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Net margin
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Break-even ACoS
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= your margin after fees. Above this ACoS, advertised sales lose money.
2026 US base rates. The FBA fulfillment fee includes the 3.5% fuel and logistics surcharge Amazon applies to every unit since April 17, 2026; it excludes monthly storage and optional fees. Amazon's Seller Central fee schedule is authoritative: confirm your product's exact fees there.
About this calculator
How to read the result
Total Amazon fees shows referral plus fulfillment, and what share of your price that is. Net profit and net margin are after your product cost and Amazon's fees, before ad spend. Break-even ACoS equals the net margin: it is the most your ads can cost, as a share of ad sales, before a sale loses money.
The formula in plain words
The referral fee is the category percentage of the price, with a $0.30 minimum. The FBA fee starts from the tier you pick, adjusted for the price band (a lower rate under $10, a higher one over $50), plus Amazon's 3.5% fuel and logistics surcharge. Net profit is price minus cost minus both fees.
WisePPC shows profit per product from your own orders and Amazon fees, so you do not have to estimate them.
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