Ecommerce profit planning: the five numbers to watch after sales
A practical framework for moving from store revenue to gross profit, contribution profit, operating profit, and break-even.
Sales are the start of the model, not the end
A store can grow revenue and still become less attractive financially. The useful question is not only “How much did we sell?” but “What did those sales leave behind after product cost, fulfillment, payment fees, marketing, and operating expenses?”
A simple planning model gives each layer a job: net revenue shows the top line you are actually planning from; gross profit shows what remains after product cost; contribution profit shows what remains after variable and acquisition costs; operating profit estimate shows what remains after operating expenses.
1. Net revenue
Start with the sales number that already reflects the commerce adjustments your platform has made. Be explicit about whether discounts and refunds are already included so they are not subtracted twice.
2. Gross margin
Gross margin is gross profit divided by net revenue. It is one of the fastest ways to see whether price, product mix, discounting, or product cost is improving or eroding the economics of growth.
3. Contribution margin
Contribution profit goes one level deeper by accounting for the costs required to generate and fulfill the sale, such as shipping or fulfillment, payment fees, and marketing. Contribution margin turns that into a percentage of net revenue so different periods can be compared more cleanly.
4. Operating profit estimate
Subtract operating expenses from contribution profit to get a planning estimate of operating profit. Keep this label precise: it is a planning metric, not automatically accounting EBITDA or a replacement for closed books.
5. Break-even revenue
Once you have a positive contribution margin, you can estimate the revenue needed to cover operating expenses. If the contribution margin is zero or negative, the more important conclusion is that the current unit economics do not support a conventional break-even path.
The value of these numbers is not the dashboard itself. It is the decisions they make possible: whether to add acquisition spend, change pricing, protect margin, reduce a cost line, or set a more realistic target.
See the model with your own numbers.
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