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Amazon Seller Profit Calculator

Enter the sale price, Amazon fees, and product cost to find your net profit and margin.

How it is calculated

This tool works per unit and takes three amounts in the same currency. total cost = Amazon fees + product cost, profit = sale price − total cost and margin = profit / sale price × 100. The Amazon fees field is one combined amount per unit, so add the referral fee (a percentage of the sale price, so work it out in currency first), any fulfilment fee and other per-unit charges together before typing it in. Product cost should be what one unit costs you landed at the warehouse. The sale price must be above zero and the other two zero or more. A negative profit is shown with a minus sign, and the margin is relative to the sale price, not to the cost.

Worked example

An item sells for 29.99. Amazon fees add up to 9.45 per unit and the product cost is 8.20. Total cost: 9.45 + 8.20 = $17.65. Profit: 29.99 − 17.65 = $12.34. Margin: 12.34 / 29.99 × 100 = 41.15%. So the seller keeps about 41 cents of every dollar of the sale price. If the fees rose to 12.00, profit would fall to 9.79 and the margin to 32.64%.

Try this example →

Common mistakes

  • Typing the referral fee as a percentage (15) in the fees field. The field takes a currency amount per unit, so enter 15% of the sale price as money.
  • Leaving out the fulfilment fee, storage fees, returns or advertising cost per unit. The margin then looks better than the real result.
  • Using the cost of a whole batch as the product cost, instead of the cost for one unit.
  • Mixing currencies, such as a sale price in dollars and a product cost in another currency. Convert everything first.
  • Confusing margin with markup. Margin here is profit divided by the sale price; profit divided by cost would give a different, larger percentage.

Sources

About this calculator

Selling on Amazon involves multiple layered fees that eat into revenue before you see a profit. Every sale sits in a category assigned a referral fee — a percentage of the total sale price, typically ranging from around 8% to 15% depending on the product category — and Amazon keeps this cut no matter who fulfills the order. Sellers who use Fulfillment by Amazon (FBA) add a further fulfillment fee per unit, based on the item’s weight and size tier, covering the pick-pack-ship-and-customer-service work Amazon performs on the seller’s behalf.

On top of these per-order charges, sellers choose between an Individual plan billed per item sold or a Professional plan billed as a flat monthly subscription, plus optional costs like storage fees, advertising spend, and returns processing. Amazon's fees are folded into a single per-unit figure, so the referral fee, fulfillment fee and any share of subscription overhead have to be added together beforehand.

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