Break-Even ROAS Calculator
Enter what an order brings in and what it costs you. You get the ROAS your ads need to break even, the ROAS that keeps your margin, and the most you can pay for each order.
Open the calculator- Break-even and target ROAS
- Max cost per order
- Runs in your browser
How the calculator works
Contribution per order is net sales minus variable costs. Break-even ROAS is net sales divided by that contribution. At $100 in sales and $60 in costs, you keep $40 per order, so ads must return $2.50 for every $1 you spend: a 2.5x ROAS.
To keep a profit margin, the tool takes that margin out of the $40 first. A 10% margin on $100 leaves $30 for ads, so the target ROAS is 100 ÷ 30, or 3.33x, and the most you can pay per order drops to $30.
What the number leaves out
The math uses the first order only. If customers buy again, you can afford a lower ROAS on the first sale. Work that out from your own repeat rate.
Platform ROAS also counts sales the ads did not cause. If you can, check it against your store or CRM revenue for the same period before you cut or raise budgets.
Common questions
What is a good ROAS?
One above your break-even ROAS. A 3x ROAS earns money for a store that keeps 50% of each sale and loses money for one that keeps 25%. Start from your own margin, then set the target.
How do I calculate break-even ROAS?
Divide net sales per order by the contribution per order. Contribution is sales minus product cost, shipping, payment fees and returns. At $100 in sales and $40 in contribution, break-even ROAS is 2.5x.
What is the difference between ROAS and break-even ROAS?
ROAS is what your ads return today. Break-even ROAS is the lowest return that still covers your costs. The gap between the two tells you whether to scale or fix.
Should I count my fixed costs?
Not in this number. Rent, salaries and software stay the same whatever you spend on ads. Keep them out of the per-order math and cover them through the profit margin field.
How does break-even ROAS relate to cost per order?
Both describe the same limit. The most you can pay per order equals your contribution per order. At $40 contribution, any cost per order above $40 loses money.
Do you store my numbers?
No. The math runs in your browser. Nothing goes to us unless you send the form.
Free ad margin review
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- Break-even and target ROAS by campaign
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