Definition
What is ROAS?
ROAS (return on ad spend) is the revenue attributed to a campaign for each dollar spent on advertising. A ROAS of 5 means $5 of revenue for $1 of advertising. It measures revenue, not margin: how you read it therefore depends on your gross margin, never on an average borrowed from another industry.
Where ROAS is reported
ROAS appears in Google Ads, in Meta Ads Manager and in Google Analytics 4. The platform divides the conversion value it is given by the campaign's spend. It is written as a ratio (4 or 4x) or as a percentage (400%): both notations say the same thing.
ROAS is most reliable in online commerce, where the sale and its amount arrive in the same session. When the sale closes off the site (a quote, a call), the reported ROAS rests on an estimated value.
The break-even point of a ROAS
Break-even ROAS is the inverse of your gross margin. At a 30% margin, you need a ROAS of 3.33 to cover your costs. At 50%, a ROAS of 2 is enough. Below that threshold, each additional sale deepens the loss instead of closing it.
This threshold does not yet count management fees, returns or the conversions that attribution overstates. Our working framework therefore sets the target about 30% above the break-even point.
What ROAS does not tell you
ROAS relates revenue to media spend alone: the cost of goods, returns, sales fees and management fees are not in it. Nor does it say whether the sale would have happened without the advertising: that is the question of incrementality.
Since August 17, 2026, a budget-limited Google Ads campaign bidding on a target ROAS optimizes toward the target entered instead of beating it. A target that does not come from your margin can therefore lower your profit without anyone touching the account.
ROAS = attributed revenue ÷ advertising spend
Break-even ROAS = 1 ÷ gross margin. The revenue is what the platform attributes, not what your accounting records.
An online store spends $2,000 on advertising in a month. The platform attributes $8,000 of sales to it: its ROAS is 4. With a 20% gross margin, those sales leave $1,600 of margin, less than the $2,000 spent: the campaign loses $400. With a 40% margin, the same sales leave $3,200 and the campaign earns $1,200 before fees.
We read ROAS as a steering indicator, not a decision indicator. It is useful every week to compare campaigns with each other. To decide whether to renew a budget, we bring it back to gross margin and then to total cost, fees included: that is the campaign's real return.
When the sale closes off the site, we replace it with the cost per qualified lead and then the cost per sale.
Not to be confused with
- ROI
- ROI (return on investment) relates profit to the total cost incurred, fees included. ROAS relates revenue to media spend alone: a ROAS above 1 can hide a negative ROI.
- CPA
- CPA says what one action costs. ROAS says how much revenue each dollar brings in: it works better when sale amounts vary.
Related concepts
- CPA
- Return on a Google Ads campaign
- Data-driven attribution
- Advertising incrementality
- Optimizing toward the bid target
- Customer lifetime value
- Conversion
Further reading
- Google Ads ROI: from the reported ROAS to real profit
- Google Ads since August 17: your CPA or ROAS target is now an instruction, not a ceiling
- Conversion tracking: the three gaps that skew everything else
- Executives: proving your advertising caused the sale
Related services
Frequently asked questions
What is a good ROAS?
No single figure holds for every industry. Break-even ROAS is the inverse of your gross margin (2.5 for a 40% margin). A working target is set above that threshold to cover management fees and returns.
