Target ROAS Calculator
Aim for at least 3.33x ROAS to keep a 20% profit margin after ad spend.
What is Target ROAS?
Target ROAS is the return on ad spend you need to hit a chosen profit margin after paying for the ads, calculated as 1 divided by (gross margin minus target profit margin). At a 50% gross margin with a 20% profit goal it works out to 3.33x.
It builds on break-even ROAS. Break-even (1 ÷ gross margin) only stops the bleeding; the target adds the profit you actually want to keep on top.
Set the profit target to zero and target ROAS collapses back to break-even. Raise the target, and the ROAS you must demand from every campaign rises with it.
How to calculate Target ROAS
Target ROAS = 1 ÷ (Gross margin − Target margin)
- Enter your gross margin. Use your product gross margin as a decimal share, for example 50% as 0.50.
- Set the profit you want. Pick the profit margin you want left after ad spend, for example 20%.
- Subtract, then invert. Subtract the target from the gross margin, then divide 1 by the result. 1 ÷ (0.50 − 0.20) = 1 ÷ 0.30 = 3.33x.
- Hold campaigns to it. Treat 3.33x as the floor a campaign must clear to leave you a 20% profit after the ad cost.
Worked example
A product carries a 50% gross margin, and you want to keep a 20% profit margin after paying for ads.
| Gross profit margin | 50% |
|---|---|
| Target profit margin (after ad cost) | 20% |
| Result | 3.33x target ROAS |
You need at least 3.33x ROAS for a campaign to leave a 20% profit after the ad spend. For comparison, break-even alone is 2.0x (1 ÷ 0.50), so the profit goal lifts the bar by 1.33x.
How to improve Target ROAS
- Protect or raise gross margin: a fatter margin lowers the target ROAS you have to clear for the same profit.
- Be realistic about the profit target, since a high target can demand a ROAS no channel will deliver.
- Once you know the target, judge live campaigns against it rather than a generic 3x or 4x rule.
- Pair it with the ad budget calculator to size spend around a revenue goal at that target ROAS.
Frequently asked questions
- What is a target ROAS and how do you calculate it?
- Target ROAS is the return on ad spend you need to hit a chosen profit margin after the ad cost, not just to break even. The formula is 1 divided by (gross margin minus target profit margin). At a 50% gross margin with a 20% profit target, that is 1 ÷ 0.30 = 3.33x.
- What is a good ROAS target to set?
- There is no universal figure, because it falls straight out of your own margins. Two inputs decide it: your gross margin, and the profit you want to keep after ads. The thinner your margin or the more profit you want banked, the higher the ROAS you have to demand from a campaign.
- How is target ROAS different from break-even ROAS?
- Break-even ROAS (1 ÷ gross margin) is the point where a campaign stops losing money. Target ROAS adds the profit you want on top, so it is always higher than break-even unless your profit target is zero. Set a 0% profit target and the two are identical.
- Why can I not set a profit target above my margin?
- Because ad spend has to come out of your gross margin, so the profit you keep can never exceed the margin you started with. If your target margin meets or exceeds your gross margin, the math has no solution: there is no ROAS high enough, since you would need ads to cost nothing or less.