What Is ROAS and How Should Businesses Measure It?
ROAS is return on ad spend: the revenue attributed to ads divided by the ad spend. A 4x ROAS means four dollars of attributed revenue for one dollar of media. It is not profit.
The calculation
ROAS = attributed revenue ÷ ad spend. If you spent $10,000 and the tracking you trust shows $40,000 in revenue from that spend, ROAS is 4. Use the same attribution window and the same revenue definition every time, or the trend is fiction.
Revenue is not margin
A high ROAS on a low-margin product can still lose money after cost of goods, shipping, returns, and discounts. A lower ROAS on a high-margin service can be the better buy. Translate ROAS into a target using gross margin before you celebrate the multiple.
Lead businesses sometimes force ROAS by assigning a made-up value to every form. That can be useful inside an ad platform. It is not the same as revenue. Label it as a modeled value so nobody quotes it as sales.
Where ROAS misleads
Platform-reported ROAS often takes credit for sales that would have happened anyway, especially on brand search and retargeting. Compare it with a business-level view: total revenue and total ad spend, plus new-customer revenue if you can separate it.
If you cannot track revenue yet, do not invent a ROAS for the report. Use cost per qualified lead until the sale can be tied back. The tracking has to exist before the ratio means anything.