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Jamie Schelling - BE Digital

Written by

Digital Marketing & AI Automation

Updated on 26 November 2024

Return on ad spend (ROAS)

If you invest in advertising, you want to know whether that investment pays for itself. Return On Ad Spend (ROAS) gives you exactly that information. It’s a crucial KPI that helps measure how effective your ads are and how much revenue you get back for every euro you invest. With ROAS you gain insight into the performance of your campaigns and can make strategic choices. A high ROAS means your ad is working well. A low ROAS is a signal that adjustments are needed. ROAS stands for Return On Ad Spend. It’s a simple formula that calculates how much revenue you generate in relation to what you spend on advertising.
The formula looks like this:
ROAS = Revenue from ads ÷ Ad costs
An example: say you’ve spent €500 on ads and brought in €2,000 in revenue.

The calculation:
ROAS = €2,000 ÷ €500 = 4
In this case, a ROAS of 4 means that every euro you’ve invested earns you four euros.

How is ROAS used in marketing?

ROAS is one of the most widely used metrics in digital marketing, especially for campaigns on platforms such as Google Ads, Facebook Ads and other paid media channels. It gives a quick, concrete picture of how profitable your campaigns are.
  • 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?

ROAS goes beyond just numbers; it offers concrete insights that can make or break your advertising campaigns. Here are the main benefits:
  1. 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.
  2. Effective budget allocation: ROAS helps you use your resources wisely. Campaigns with a high ROAS often deserve more attention and budget.
  3. Making goals measurable: A good ROAS means you are getting closer to your business goals, such as growth or profit optimisation.
It’s also important to understand that a good ROAS depends on your industry and business goals. A ROAS of 4 is fine in e-commerce, for example, but in a niche market a ROAS of 2 can already be very profitable.

How do you calculate ROAS effectively?

The basic ROAS formula is simple, but it's important to use the right figures. Here are a few tips:
  • 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?

What counts as a 'good' ROAS depends on your industry and goals. In e-commerce, the aim is often a ROAS of at least 4. This means every euro you spend on advertising brings in four euros.
In some sectors, such as SaaS or luxury products, margins are different. Here a ROAS of 2 can already be enough to be profitable. The most important thing is to look at what works for your business and how your ROAS relates to your profit goals.

Tips for improving your ROAS

Improving ROAS is an ongoing process. Here are some practical ways to get the most out of your ads:
  1. 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.
  2. 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.
  3. 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.
  4. Test and optimise: Run A/B tests regularly. Try different copy, images or offers to see what works best.
  5. Automate where possible: Platforms such as Google Ads offer smart bidding strategies, such as ROAS-based bidding, to maximise your returns.
  6. 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

When analysing ROAS, crucial mistakes are sometimes made. Here are a few pitfalls to avoid:
  • 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.
ROAS is an indispensable metric for anyone serious about online advertising. It gives you insight into the performance of your campaigns and helps you make better decisions about your advertising budget. Keep in mind that ROAS is not an end goal. It's a means of refining your marketing strategy and increasing your profit. By analysing and optimising smartly, you can structurally improve your ROAS and get more out of your ads. Need help? Get in touch with no obligation and we'll look at it with you. 

Frequently asked questions

How do you calculate ROAS?

You calculate ROAS by dividing revenue from ads by advertising costs. For example, if you spend €500 on ads and bring in €2,000 in revenue, your ROAS is 4: every euro you invest returns four euros.

What is a good ROAS?

That depends on your industry and goals. In e-commerce, businesses often aim for a ROAS of at least 4, while in sectors such as SaaS or luxury products a ROAS of 2 can already be enough to be profitable. Above all, look at your own profit targets.

How can I improve my ROAS?

Make sure you have accurate targeting, strong visuals and a fast, user-friendly landing page. Run A/B tests regularly, use smart bidding strategies such as ROAS-based bidding where possible, and scale up successful campaigns while stopping poorly performing ones.

What mistakes do people often make when calculating ROAS?

Common mistakes are focusing on revenue instead of profit, targeting audiences that are too broad and forgetting extra costs such as production and shipping. As a result, a high ROAS can be misleading, especially if your margins are low.

Jamie Schelling - BE Digital

About the author

Digital Marketing & AI Automation

Jamie Schelling is a Digital Marketing & AI Automation specialist at BE Digital. She combines data, campaigns and automation to make digital performance visible and to improve it structurally.