Your profit per unit on Amazon is the selling price minus product cost, the FBA fee, the referral fee and the ad cost you spend per unit sold. Enter your numbers to get profit, margin and monthly profit.
price × referral fee %price − COGS − FBA fee − referral fee − ad cost per unitprofit per unit ÷ price × 100COGS should include the landed cost of the product: manufacturing, freight, duties and prep. The FBA fee depends on size and weight; the referral fee is a percentage of the sale price that varies by category.
Ad cost per unit is your total ad spend divided by total units sold (not just ad-attributed units). That spreads ad cost across all sales and gives you a true blended margin. Ad spend ÷ units is the same idea as TACoS, expressed in dollars per unit.
This calculator leaves out monthly storage, returns, and overheads like software and staff. Add them as a per-unit amount to COGS if you want a fuller picture.
About $9.99 profit per unit, a 33.3% margin after ads.
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Subtract COGS, the FBA fulfillment fee, the referral fee (price × category rate) and your ad cost per unit from the selling price. Divide by price for margin.
It varies widely by category and price point. Many private-label sellers aim for a margin after ads somewhere in the 15% to 30% range, but your cash flow and growth goals matter more than a benchmark.
Divide total ad spend for a period by total units sold in that same period, including organic units.
No. Monthly and long-term storage, returns and overheads aren't included. Add them as a per-unit amount to COGS for a fuller number.