What is ROAS?
ROAS stands for Return on Ad Spend. It is the most-watched metric in paid advertising because it answers one question: for every euro you spend on ads, how much revenue comes back? A 3× ROAS means you generated €3 for every €1 spent. A 0.5× ROAS means you spent €1 and got €0.50 back. Simple math, massive implications.
How is ROAS calculated?
The formula is straightforward:
ROAS = Revenue from Ads ÷ Ad Spend
If you spent €1,000 on Meta Ads and generated €4,500 in revenue, your ROAS is 4.5×. The higher the better, but the ceiling depends on your industry, margins, and growth stage.
ROAS vs ROI vs CAC
These three are often confused. Here is the difference in one line each:
- ROAS measures revenue per ad euro. Useful for campaign-level decisions.
- ROI measures profit per ad euro, after subtracting cost of goods, fulfilment, and operations. Useful for business-level decisions.
- CAC (Customer Acquisition Cost) measures spend per new customer. Useful for LTV-based budgeting.
A campaign can have a strong ROAS but a poor ROI if your margins are thin. Always check both.
How to improve your ROAS
- Fix the creative first. 80% of paid ads performance comes from the creative. If your CTR is below 1%, the ad is the problem, not the audience.
- Tighten audience targeting. Broad audiences are cheaper to reach but convert worse. Narrow until CPM rises sharply, then back off slightly.
- Optimise the landing page. 50% of paid ads lose money because the page after the click does not convert. Speed, headline, and trust signals matter most.
- Raise your AOV. Upsells, bundles, and tiered pricing lift AOV without raising CAC. This is the fastest ROAS lever.
- Kill losers fast. 80% of your ad sets will lose money. The discipline is killing them in week 1, not week 4.
