Understand the number before the decision
A price that covers margin and fees
Add product cost, shipping, packaging and the fixed fee. Divide by one minus the target margin and percentage fee. The example is (18 + 4 + 1 + 0.30) ÷ (1 − 0.30 − 0.03) = 34.7761. Selling price is rounded up to 34.78 so cent rounding does not reduce the target margin.
A 30% margin is not a 30% markup
Multiplying cost by 1.30 does not produce a margin of 30% of revenue. Margin uses selling price as its denominator; markup uses cost. This tool targets margin on selling price and accounts for percentage fees separately. If fees plus target margin reach 100%, no positive selling price can meet that target.
Use the calculated price as a starting point
Compare the price with your product value and customer behaviour, then check profit at the price you actually choose. Entered fees are linear; if your provider has minimums, tiers or charges on taxes and shipping, enter costs appropriate to that case. The result does not predict customer willingness to pay.
What is included?
Price and costs are per unit. Fees are a percentage of the sale amount plus a fixed per-unit fee. Exclude recoverable sales tax from both price and cost so it is not counted as profit. Add advertising or return allowances to unit cost if needed. Numbers round for display only, except suggested price and break-even units, which round up. Currency is a label only. No exchange rates, preset provider fees or input uploads are used.