ROAS = Revenue from ads ÷ Ad costs
The calculation:
ROAS = €2,000 ÷ €500 = 4
How is ROAS used in marketing?
- Calculating profitability: If your ROAS is higher than 1, you are in principle making a profit. The higher the number, the better.
- Budget decisions: By analysing ROAS, you can determine which campaigns deserve more or less budget.
- Optimising performance: It helps marketers discover which ads, audiences or channels perform best.
Why does ROAS matter?
- Insight into returns: You know straight away whether your ad budget is being well spent. This prevents you from continuing to invest in campaigns that deliver nothing.
- Effective budget allocation: ROAS helps you use your resources wisely. Campaigns with a high ROAS often deserve more attention and budget.
- Making goals measurable: A good ROAS means you are getting closer to your business goals, such as growth or profit optimisation.
How do you calculate ROAS effectively?
- Use net revenue: Only include the revenue directly related to your ads.
- Take extra costs into account: Think of production costs, shipping costs and operational costs. A high ROAS can be misleading if these costs are not included.
- Measure per channel: Make sure you look at how your ROAS performs per platform. What works on Google Ads may work less well on social media.
What is a good ROAS?
Tips for improving your ROAS
- Ensure accurate targeting: Use tools such as audience targeting in Google or Facebook to sharpen your target audience. Think of age, interests and behaviour. The more specific, the better.
- Improve your creative: Stand out with visuals that fit your brand and make sure you have a strong message. Poor visuals can quickly sink a campaign.
- Optimise your landing page: A good ad is nothing without a strong landing page. Make sure it loads quickly, is user-friendly and encourages action.
- Test and optimise: Run A/B tests regularly. Try different copy, images or offers to see what works best.
- Automate where possible: Platforms such as Google Ads offer smart bidding strategies, such as ROAS-based bidding, to maximise your returns.
- Monitor and scale up: Continuously analyse your results and scale up successful campaigns. At the same time, stop campaigns that aren't performing.
Common mistakes when calculating ROAS
- Focusing on revenue instead of profit: A high ROAS looks attractive, but says nothing about your profit if your margins are low.
- Audiences that are too broad: If you try to reach everyone, your results get diluted. Be specific about who you target.
- Forgetting to include extra costs: Calculating ROAS without taking other costs into account gives a distorted picture.

