Quick answer
How do you calculate Break-Even ROAS?
Use Break-even ROAS = 1 ÷ Contribution margin. Enter the matching values above to calculate the result instantly.
What it measures
Understanding Break-Even ROAS
Find the minimum return on ad spend that covers product and fulfillment costs, using your contribution margin. Break-even ROAS is the point where ad-driven revenue exactly covers the cost of the goods sold through those ads. Above it a campaign contributes profit; below it each sale loses money even when revenue looks strong. Because it depends only on margin, a thin-margin product needs a much higher ROAS to stay profitable than a high-margin one.
Interpretation
What the result means
The result is the ROAS multiple your campaigns must beat before advertising adds contribution profit, given the margin you entered.
Action
How to use it
Use your true contribution margin after discounts, returns, and payment fees, then set campaign ROAS targets comfortably above break-even to leave room for overhead and profit.
Limits
What it leaves out
This ignores fixed overhead, agency fees, and creative costs, and assumes the margin you entered holds across the products being advertised.
The math
Break-Even ROAS formula
Worked example
Example calculation
- Calculation
- 1 ÷ 0.40
- Result
- 2.50× break-even ROAS
Step by step
How to use this calculator
- 1Enter contribution margin.
- 2Keep every input on the same time period and measurement basis.
- 3Review the result, then change one assumption at a time to test scenarios.
Decision support
When this calculator is useful
- Setting ROAS targets
- Judging campaign profitability
- Briefing media buyers
Common questions
Frequently asked questions
Which inputs should I use for Break-Even ROAS?
Use contribution margin, measured from the same source and period. Include only values that match the definitions shown beside each field.
Why might two Break-Even ROAS calculations differ?
The systems or accounting policies may define contribution margin differently. Compare the time period, scope, source, and treatment of exceptional items before comparing results.
How often should I recalculate Break-Even ROAS?
Recalculate when any input changes materially and on the same reporting cadence used for the decision. Save the source and date of each input so the trend remains comparable.
Can I use Break-Even ROAS by itself?
No single metric captures the full decision. Use the result with the related measures, assumptions, and limitations shown on this page.
Calculation reviewed: 2026-06-18. CalcPilot uses the formula shown above and tests representative values during the production build. See our methodology and correction policy.
Browse by topic
Calculator categories
Connected decisions
See how this metric fits the system
Free to embed
Add this calculator to your site
Paste this snippet to embed the live Break-Even ROAS Calculator calculator. A link back to CalcPilot keeps it free to use.
Keep exploring
Related calculators
ROAS Calculator
Measure the revenue generated for every dollar spent on advertising.
Calculate nowContribution Margin Calculator
Calculate the share of revenue remaining after variable costs.
Calculate nowProfit Margin Calculator
Find the percentage of revenue left after costs and understand how efficiently a sale creates profit.
Calculate nowCustomer Acquisition Cost Calculator
Calculate the average sales and marketing cost required to acquire one new customer.
Calculate nowCPA Calculator
Calculate average advertising cost for each acquisition or conversion.
Calculate now