KNOW THE MONTHLY SALES NUMBER THE BUSINESS ACTUALLY HAS TO REACH.

Enter fixed overhead, contribution margin before advertising, planned advertising as a percentage of revenue and the monthly profit you want. The calculator turns them into one clear sales target.

Use one monthly period and one currency throughout. The calculator does not need orders, AOV or a separate refund estimate because those economics are already captured in the contribution margin.

Margin after advertising = contribution margin before advertising − advertising percentage. Convert this remaining percentage to a decimal for the calculations.

For a positive remaining margin: monthly break-even sales = fixed overhead ÷ remaining margin. Sales required for the profit target = (fixed overhead + target operating profit before tax) ÷ remaining margin.

If nothing remains after product, order and advertising costs, extra sales cannot cover positive fixed overhead or a positive profit target. A negative remaining margin means each extra sale increases the loss. Improve the margin or lower the advertising share before scaling.

Use one currency and the same tax basis throughout. Recalculate when product mix, discounting, fulfilment or advertising efficiency changes materially. This is a planning model, not financial or tax advice. Enable JavaScript to use the interactive calculator; your numbers stay in your browser.

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