Breakeven ROAS is the exact return where your ads make you nothing and lose you nothing. Earn less than it and you are paying to sell. Earn more and you are genuinely ahead. And it is not a guess, it comes straight out of your profit margin.
The rule is short. Take the share of each sale you keep after the cost of the product, and your breakeven ROAS is one divided by that share. Keep 40 out of every 100, and your breakeven is 2.5x. Keep only 20, and it jumps to 5x.
What that number is actually telling you. At a 2.5x breakeven, every sale has to bring back 2.5 times its ad cost just for you to stand still. At 5x, that same standing-still needs a far harder result. Thin margins need high ROAS to survive, and that is why the same 3x can be a quiet triumph for one shop and a slow death for another. The ROAS on its own never told you which.
This is the most useful number on the whole site, and here is why. Most people stare at their ROAS with no idea what counts as good. Breakeven hands them the answer for their own business. Below your line, stop or fix it. Above it, you can spend with a clear head.
One honest caveat. This simple version uses your product margin only. It does not count your rent, your salaries or your software. You have to clear those too before you are truly in profit, so treat breakeven ROAS as the floor you must beat, not the finish line you are aiming for.
Nobody can tell you whether a 3x is good. Your own margin can.
Sources
- Standard advertising definition. This page explains a universal metric, not a Meta-specific figure, so there is no benchmark or platform number to source. Any example numbers are illustrative and labeled as made up.
Last checked 9th August 2026. Next check 15th August 2026.