Amazon FBA profit calculator

In short: Amazon profit per unit = selling price − product cost − shipping to Amazon − FBA fee − referral fee − storage − returns − ad spend per unit. Enter your numbers to see your real margin after ads.

Selling price ($)Product cost per unit (COGS) ($)Shipping to Amazon per unit ($)FBA fulfillment fee per unit ($)From Amazon's Revenue Calculator or your fee preview.Referral fee (%)Most categories are 8–15%.Storage and other fees per unit ($)Ad spend per unit sold ($)Monthly ad spend ÷ units sold.Returns and refunds (% of price)Units sold per month

Profit per unit: $9.59
Net margin: 32.0%
ROI on product cost: 131%
Break-even ACoS: 42.0%
Amazon fees per unit: $9.50
Monthly profit: $9,591.70

Amazon profit questions

What is a good profit margin on Amazon?

Most CPG brands aim for at least 15% net margin after all Amazon fees and advertising. Below 10%, a small price drop or rise in ad costs can wipe out profit.

Where do I find my FBA fee?

Use Amazon's Revenue Calculator or the fee preview report in Seller Central. The fee depends on your product's size and weight tier.

What is break-even ACoS?

Your profit margin before advertising. If your ACoS is lower than this number, your ad sales make money.

Why include ad spend per unit?

Many sellers look profitable before ads and lose money after them. Dividing monthly ad spend by units sold shows the true cost of each sale.

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