ROAS
Paid MediaAlso: Return on Ad Spend · Return on Advertising Spend
Quick definition
ROAS stands for return on ad spend. It measures how much revenue you generate for every dollar spent on advertising. A ROAS of four means you got four dollars back for every one you put in. Calculated as revenue attributed to ads divided by total ad spend over the same period.
Your break-even ROAS depends on your gross margin. A margin of fifty percent means you break even at two times. Lower margin means you need a higher ROAS to be profitable. Platform-reported ROAS is almost always higher than the real number.
How it varies across Australia
ROAS targets vary sharply by industry and margin structure. A business with thin margins needs a much higher ROAS to be profitable than one with strong margins. Published benchmarks are almost always platform-reported and inflated by attribution gaps. Your break-even ROAS is the only benchmark that matters.
See acquisition performance patterns across Australian industries →What it actually means
ROAS is the most commonly cited paid media metric and the most commonly misread one. The number is simple: revenue divided by spend. The problem is that 'revenue' is whatever the ad platform decided to attribute to itself.
Every major ad platform over-counts. Meta takes credit for purchases that would have happened anyway. Google attributes conversions across overlapping windows. The ROAS you see in the dashboard is not the same ROAS you'd calculate from your actual bank statement.
The honest version of ROAS starts from a revenue figure you can trace to cash, and uses a consistent attribution model you control, not the one the platform chose for you.
The second problem is that ROAS ignores margin. A clothing business selling at sixty percent gross margin and a grocery business selling at fifteen percent gross margin can both report a four-times ROAS. One is very profitable. One is underwater. ROAS only becomes a decision-useful metric when you know the margin it's sitting on top of.
A four-times ROAS looks great until you notice the margin is thirty percent. Then you're losing money on every sale.
How to calculate it
ROAS = Revenue attributed to ads ÷ Ad spend
Worked example. You spent $8,000 on Google Ads last month. The campaign is credited with $32,000 in revenue. ROAS = $32,000 ÷ $8,000 = 4.0. For every dollar spent, four dollars came back.
The Australian context
Australian advertisers pay some of the highest cost-per-click rates in the English-speaking world for competitive categories. That pushes the spend denominator up and compresses ROAS relative to US benchmarks. It also makes the attribution problem worse: when each click costs more, the platform has more incentive to claim credit for as many conversions as possible.
Australian ecommerce businesses with strong repeat-purchase rates also need to be careful about attributing returning customer revenue to ads. If a customer you acquired six months ago buys again after clicking a retargeting ad, the ad platform will likely claim full credit. Your actual new-customer ROAS is the number worth watching.
Where people get this wrong
ROAS vs CPA
| ROAS | CPA | |
|---|---|---|
| What it measures | Revenue returned per dollar spent | Cost to generate one acquisition |
| Expressed as | A multiplier (e.g. four times) | A dollar figure (e.g. $120) |
| Best for | Ecommerce with direct revenue attribution | Lead-gen and any non-revenue conversion |
| Blind to | Margin and profitability | Full unit economics beyond ad spend |
| Platform inflation risk | High | High |
Related terms
Common questions
What ROAS should I be targeting in Australia?
Start with your break-even ROAS, which is one divided by your gross margin as a decimal. A fifty percent margin means you break even at two times ROAS. Anything above that is profitable. Use that as your floor, not a published industry average.
Why does my ROAS look different in different platforms?
Each platform uses its own attribution model, conversion window and counting method. Meta, Google and TikTok all claim credit for the same purchases. Your actual blended ROAS from a single source of truth like your CRM or order management system will be lower than any individual platform reports.
Is a higher ROAS always better?
Not always. Pushing ROAS higher often means cutting spend on upper-funnel activity that doesn't convert immediately. Over-optimising for ROAS can shrink the audience you're reaching and damage long-term growth even as short-term numbers look strong.
How is ROAS different from ROI?
ROAS measures revenue returned per dollar of ad spend. Return on investment (ROI) measures profit returned per dollar of total investment, including all costs. ROAS ignores cost of goods, team costs and everything outside the ad budget. ROI is the more complete picture.
Keep exploring
About New Rebellion
New Rebellion is a marketing intelligence consultancy. We build tools, score Australian businesses on how their marketing actually performs, and publish Debrief every day. This dictionary is part of how we work in the open.
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