Free calculator · profit per unit

Marketplace profit calculator: what you keep per sale.

Enter your selling price, what the item costs you, shipping, your marketplace fees and ad spend. Get profit per unit, margin and the lowest price that does not lose money.

Works in your browser · you enter your own fee rates

One unit sold

Where you sell (changes labels only)

Selling price

Shipping charged to buyer (optional)

Item costUse landed cost: supplier price plus freight, duty and inbound fees, per unit.

Your shipping cost (optional)What you pay to ship the order to the buyer, or a per-order fulfillment fee.

Marketplace fees for this sale

Percentage fees, % (optional)

Fixed fees per order (optional)

Percentage fees are charged on

Take your rates from your marketplace's own seller fee page. Add every fee that applies to the sale, including payment processing.

Ad spend per unit (optional)

Other costs per unit (optional)Packaging, inserts and so on.

Profit per unit

Any marketplace · ONE UNIT · USD

Price plus shipping charged	45.00
Item cost	(24.00)
Your shipping cost	0.00
Marketplace fees	0.00
Ad spend	0.00
Other costs	0.00
Profit per unit	21.00
Margin	46.7%
Break-even selling price	24.00

EXAMPLE: THE DEMO STORE'S CAMP STOVE · ADD YOUR OWN FEES

Profit per unit: 21.00, margin 46.7%.

How it's worked out

The profit formula.

Profit per unit = price + shipping charged − item cost − your shipping cost − marketplace fees − ad spend − other costs

Marketplace fees = percentage fees × (price plus shipping charged, or price only, as you choose) + fixed fees per order. Each money figure is rounded to the cent.

Margin = profit per unit ÷ (price + shipping charged)

Break-even price = (item cost + shipping cost + fixed fees + ad spend + other costs − shipping charged × (1 − fee rate on shipping)) ÷ (1 − percentage fee rate)

The break-even price is the lowest selling price, to the cent, at which this unit does not lose money, with everything else held the same.

The example is the demo store's camp stove: a selling price of 45.00 and a landed cost of 24.00 leave 21.00, a 46.7% margin, before any fees, shipping or advertising. Enter your own fee rates to see what is left after them. If you only know the supplier price, work out the landed cost first with the landed cost calculator; using the supplier price makes every unit look more profitable than it is.

Go further

Profit per product, from your real books.

Our monthly e-commerce bookkeeping reconciles every payout, fee and refund, so the fees and costs in your margin come from your books, not an estimate.

See monthly bookkeeping All free tools

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