Estimate a target ROAS from margin goals
Estimate a planning target ROAS, maximum CPA and optional maximum CPC from margin assumptions.
Simplified model: target ROAS = 1 / (gross margin - desired profit margin).
How to use the Google Ads Target ROAS Calculator
Estimate a planning target ROAS, maximum CPA and optional maximum CPC from margin assumptions.
Formula and method
Maximum ad-cost share = gross margin - desired profit margin; target ROAS = 1 / maximum ad-cost share.
Example
At 50% gross margin and a 10% desired profit margin, 40% of revenue remains available for ads, implying a 2.50x planning ROAS.
Planning examples
These examples are mathematical scenarios designed to help with planning. They are not claims about typical market performance.
| Use | Recommendation |
|---|---|
| Planning | Use your own recent data whenever possible. |
| Comparisons | Keep the same definition and time period across comparisons. |
| Benchmarks | Treat public benchmarks as context rather than guarantees. |
How to interpret the result
This is a simplified contribution-margin model. Include returns, shipping, platform fees and other variable costs in your real profitability model.
Frequently asked questions
Does this tool use an external API?
No. The calculation runs from the values you enter.
Is the result a guarantee?
No. It is a mathematical planning result based on your inputs.
Can I use my own real data?
Yes. Your own recent account or business data is usually the best input.
Can I compare different platforms?
Use caution because metric definitions and monetization models can differ by platform.