ClarityHow to use this tool
- Enter contribution margin before ads.
- Select Calculate to view the result.
- Check the method and assumptions below before using the result.
Input reference and sample values
Use the units and choices shown for each field. Sample values are provided for practice, not as recommendations.
| Input | Format and units | Sample |
|---|---|---|
| Contribution margin before ads | Numeric value. Unit: %. Must be greater than zero. Maximum: 100. | 40 |
Result for these sample inputs
2.5 multiple
- Basis
- Contribution margin before advertising
Select Try the example in the form to load these values and calculate them again. This replaces the current form inputs. Compare the result with the method and worked explanation below.
The method, explained
Break-even ROAS = 1 ÷ contribution margin fraction, or 100 ÷ margin percentage.
At a 40% contribution margin before ads, break-even ROAS is 2.5× because 2.5 × 0.40 = 1.
What to keep in mind
The margin must exclude the ad spend being evaluated and reflect the relevant non-ad variable costs. Fixed overhead and desired profit are not automatically covered.
Common questions
Does meeting this ROAS mean the business is profitable?
Not necessarily. It covers advertising against the assumed contribution but may leave fixed costs uncovered.
Can I enter gross margin?
Only if it represents the relevant contribution after other variable costs. Otherwise the threshold may be too optimistic.
Methodology maintained by ClarityKit. How these tools are built and checked.