Definition
Break-even ROAS is the ROAS at which contribution margin exactly covers the ad cost — neither loss nor gain. It's calculated as 1 divided by your margin.
Also called: Break-even ROAS, Breakeven ROAS, Zero-point ROASFollow the sale through to contribution.
Same revenue. A different contribution margin changes what you can afford to spend.
01Sales value does not tell you how much is left.
The formula — and why it's personal
Break-even ROAS = 1 / margin. At a 40% margin, break-even is 2.5; at 60% it's 1.67; at 25% you have to reach 4.0 before an ad even breaks even. It's your own number. It depends solely on your margin, not on what others in the industry do.
That's why break-even ROAS is the first thing we calculate in an audit. Without it, any ROAS target is a guess: a ROAS of 3 is strong profit for the high-margin brand and a loss for the low-margin one. Same number, opposite conclusion.
From break-even to target ROAS
Break-even is the floor, not the goal. For the business to turn a profit, ROAS has to sit high enough above break-even that contribution margin also covers fixed costs and leaves the bottom line you're after. How far above depends on your cost structure and growth ambition.
If your CLTV is strong, you can deliberately run below break-even on first purchases, because repeat orders pull it back. Break-even at the order level and at the customer level are two different numbers — and it's the latter that decides how aggressively you can scale.
Frequently asked questions
How do I calculate break-even ROAS?
Divide 1 by your margin. A 40% margin gives a break-even ROAS of 2.5 (1 / 0.40). Anything above that is profit at the gross level; anything below loses money on the order.
Is break-even ROAS the same as target ROAS?
No. Break-even is the zero point. Your target ROAS sits above it, so contribution margin also covers fixed costs and leaves a profit — unless you deliberately run lower on new customers because CLTV carries it.
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About the author
Nicklas Segatz Mortensen
Growth hacker and fractional CMO with 10+ years' experience and hundreds of millions in managed ad spend behind him. Background from larger Danish and international scale-ups, and from the agency world.
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