Adela Mincea
Break-Even ROAS Calculator
Enter your gross margin and current ROAS. See the minimum ROAS you need to cover the cost of goods, and whether your account is actually profitable, at break-even, or quietly losing money.
Revenue minus cost of goods, as a percentage of revenue. Required.
What your account is reporting today. Leave blank to just see the break-even.
Used to calculate monthly profit or loss in dollars.
For every $1 of ad spend, attributed revenue must reach $3.33 just to cover the cost of goods. Anything below this is loss-making at the contribution level, before overhead, team, or platform fees.
Formula: Break-even ROAS = 1 / (gross margin %). Profit per $1 spent = (current ROAS × margin) − 1. Contribution-margin level only — does not include overhead, team, or platform fees.
ROAS is a revenue metric. Your business runs on margin.
A 4x ROAS sounds healthy. The dashboard confirms it. The agency confirms it. The platform confirms it. The P&L tells a different story.
Here is why: ROAS is a revenue ratio, not a margin ratio. At 40% gross margin, 4x ROAS is comfortably profitable. At 22% margin, the same 4x is unprofitable on contribution — every conversion is losing money before you pay for ads, team, platform fees, or any overhead.
The break-even ROAS at any margin is a one-line calculation: 1 / margin. Most marketing teams have never run it. Most agencies don't volunteer it. Most accounts are being managed against a target that was set without reference to the underlying economics.
This tool runs the calculation for you. The harder version — whether your platform-attributed ROAS reflects what your account is actually contributing to the business — is what the Google Ads Audit covers.
Margin-adjusted Google Ads Audit
Run this calculation against your actual account. The audit breaks down ROAS by campaign type against your real margin economics, surfaces what's profitable, what's borderline, and where the blended number is hiding a problem. $499, 3-5 business days.
See what the audit covers →Digital Economic Review
Goes one layer above the channel: CAC by channel against actual margin, attribution quality, ROAS stability, scaling verdict. The full economist's read on whether your acquisition model holds. $999, 5-7 business days.
See what it covers →How marketing economists think about ROAS
- ROAS is a revenue metric. Your business runs on margin. — the long-form explanation behind this calculator.
- The average that's destroying your marketing decisions — why blended ROAS hides the campaigns losing money.
- Your marketing report proves correlation. Not causation. — why platform ROAS often overstates real contribution.
Break-even ROAS FAQ
Break-even ROAS is the minimum return on ad spend you need to cover the cost of goods sold. The formula is 1 divided by your gross margin (as a decimal). At 25% gross margin, your break-even ROAS is 4.0x. Below that, every sale attributed to the ad is loss-making at the contribution level.
Take your gross margin as a decimal (e.g. 30% = 0.30). Divide 1 by that number. The result is your break-even ROAS. So at 30% margin: 1 / 0.30 = 3.33x. Your account needs to deliver at least 3.33x ROAS just to cover product cost — before overhead, ad team, platform fees, or any profit.
ROAS measures revenue, not profit. A 4x ROAS sounds healthy. At 40% margin it's profitable. At 22% margin it's losing money on every conversion. The same ROAS number can be either great or terrible depending on the underlying margin. Most accounts run ROAS targets that were set without ever doing this calculation.
Use product-specific margin matched to the campaign or ad group level. Blended margin masks campaigns selling high-margin and low-margin products together. For a quick read, blended is fine. For a budget decision, you need the margin of the products being advertised in each specific campaign.
This calculator gives you contribution-margin break-even — what you need to cover product cost only. Real profitability requires a higher ROAS to also cover overhead, team, platform fees, and target margin. Multiply your break-even ROAS by 1.3-1.6x for a more realistic profitability target depending on your overhead structure.
The math is exact. The interpretation depends on attribution quality. Platform-attributed ROAS often overstates incremental contribution (especially for branded search and remarketing). For a margin-adjusted, attribution-honest read on your actual account, the Google Ads Audit covers exactly this analysis.
Want this calculation run on your real account?
The Google Ads Audit ($499) breaks down margin-adjusted ROAS by campaign type, exposes where the blended number is hiding loss-making spend, and ranks the fixes in order of impact.