“4x ROAS” sounds great until you remember you don't keep all of the revenue. Put in your spend, the revenue your ads brought in, and your margin, and see whether the ads actually made you money.
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ROAS (return on ad spend) is revenue divided by ad spend: revenue ÷ spend. A 4x ROAS means every $1 of ads brought back $4 of sales. It is a revenue number, not a profit number — it says nothing yet about what those sales cost you to deliver.
Break-even ROAS is the ROAS where the ads exactly pay for themselves: 1 ÷ gross margin. If you keep 40 cents of every sales dollar, you need $2.50 of revenue to cover each $1 of ads, so break-even is 2.5x. Below it, the ads lose money even though they “made” sales.
Profit or loss after ad spend is the gross profit the ad-driven sales produced, minus what the ads cost: revenue × margin − spend. It is before overhead like rent, office staff and management fees, so treat it as the ceiling on what the ads contributed, not your bottom line.
Why break-even depends on margin. Two businesses can both run a 3x ROAS and have opposite results. A company keeping 50% of each sale needs only 2x to break even, so 3x is profitable. A company keeping 25% needs 4x, so the same 3x is losing money on every campaign. That is why a ROAS figure on its own — yours or anyone else's — can't tell you whether to spend more or less.
The hard part is not the math; it's the revenue figure. Ad platforms report the conversions they can see, which usually means form fills, not closed jobs. If your revenue number is an estimate, so is your ROAS. To see the same economics from the lead side — close rate, cost per customer, and the most you can afford per lead — use the cost per customer calculator, or read Is My Cost Per Lead Any Good?
A calculator is only as good as the revenue figure you put in it. Book a demo and we'll show you how AuriaTrack ties closed jobs back to the campaign that produced them, so your ROAS is built on sales, not clicks.