Break-even ROAS formula
Divide selling price by contribution before advertising, or divide one by the contribution-margin rate. A 40% contribution margin produces a 2.50× break-even ROAS.
Find the revenue ROAS your product needs to cover ad spend using contribution margin, not a generic benchmark.
Break-even ROAS
2.50×40.0% contribution margin before advertising.THE LINE BEFORE SCALE
A campaign can report revenue and still lose money. Contribution margin turns product economics into one clear advertising threshold.

THE FIELD NOTES
Use the result now, then read the practical notes for assumptions, examples, limitations, and the choices behind it.
$100 price · $60 variable costs · $40 maximum acquisition cost
Divide selling price by contribution before advertising, or divide one by the contribution-margin rate. A 40% contribution margin produces a 2.50× break-even ROAS.
Include product, fulfillment, payment, platform, and other costs that rise with the order. Subtract those costs from selling price before advertising.
ROAS compares conversion value with ad spend, while ROI compares profit with the total investment. A campaign can clear its ROAS floor and still miss a full-business profit target.
Returns, attribution gaps, discounting, and operating overhead can justify a target above the mathematical break-even line.
THE PRODUCT IS NEXT
Divide selling price by contribution before advertising, or divide one by the contribution-margin rate. A 40% contribution margin produces a 2.50× break-even ROAS.
At 2.50×, every $1 of ad spend must produce $2.50 of attributed revenue to recover the modeled variable costs and the ad dollar. It does not create operating profit.
Include product, fulfillment, payment, platform, and other costs that rise with the order. Subtract those costs from selling price before advertising.
Keep fixed overhead separate unless you deliberately allocate it per order. Mixing monthly overhead with a single-order contribution model can make the threshold look more precise than it is.
ROAS compares conversion value with ad spend, while ROI compares profit with the total investment. A campaign can clear its ROAS floor and still miss a full-business profit target.
Use the same revenue definition as the ad platform when comparing this result with reported ROAS. Attribution windows, refunds, discounts, and taxes can change the comparison.
Returns, attribution gaps, discounting, and operating overhead can justify a target above the mathematical break-even line.
Treat the result as a floor for the entered scenario, then test a target that leaves enough room for uncertainty and desired profit.
Divide one by contribution margin as a decimal. A 40% contribution margin produces a 2.5× break-even ROAS.
No. Break-even is the modeled floor before profit. A target can sit higher to cover uncertainty, overhead, and desired profit.
Product cost is not part of the platform ROAS metric, but it is required to calculate the contribution margin that determines break-even ROAS.
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