Enter your assumptions to see the projection and the figures behind it.
How this calculator works
Enter monthly revenue, cost of goods as a percentage, ad spend, other costs and order volume. The calculator shows the waterfall from revenue down to net profit, plus your net margin, ROAS, break-even ROAS and profit per order.
The formula
Gross profit = Revenue − (Revenue × COGS ÷ 100). Net profit = Gross profit − Ad spend − Other costs. Net margin = Net profit ÷ Revenue × 100. Break-even ROAS = 100 ÷ (100 − COGS %).
Questions
What belongs in other costs?
Shipping, payment processing, software, warehousing and staff — anything attributable to fulfilling those orders. Leaving them out is how stores convince themselves they are profitable.
Why compare ROAS to break-even ROAS?
Because ROAS alone cannot tell you whether advertising is profitable. Break-even ROAS is derived from your margin and is the threshold that actually matters.
Proof this works
An ecommerce account where the maths actually held up at scale — 12x attributed ROAS across the period.
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