CPA essentials
- Definition : The average budget invested to obtain a concrete result (a sale, a quote, a subscription)
- Objective: Measuring real profitability. Clicks are good, customers are better
- Calculation : Total expenditure / Number of acquisitions
- The board: Use CPA to compare your channels and invest where it's cheapest
In digital marketing, it's easy to get excited about a large number of clicks or "likes". But for an executive, the only question that really matters is: "How much did I pay to get this new customer?"
This is precisely what the CPA (Cost per Acquisition). Whether you advertise on Google (SEA), on social networks (SMA) or optimize your search engine optimization (SEO), this indicator tells you whether you're investing wisely.
Why is the CPA the justice of the peace?
Unlike the CPC which measures the cost of a click, the CPA goes further: it measures the cost of a result. It allows you to make strategic choices:
- Identifying budget "sieves" : If a campaign brings you thousands of visitors but no sales, your CPA will skyrocket. This is the signal to cut or correct the campaign immediately.
- Comparing channels: Is it more profitable to find a customer via a blog post (SEO) or via a LinkedIn ad? CPA puts everyone on an equal footing.
- Securing your growth : If you know that a customer earns you 100 EUR and costs you 20 EUR to acquire (CPA), you can increase your budgets with peace of mind.
How do you calculate your CPA?
You don't need to be a financial expert. You divide what you've spent by the number of results you've achieved:
CPA = Total expenditure / Number of acquisitions
Case in point: You have invested 500 EUR this month and have received 25 requests for quotation via your site. Your CPA is 20 EUR. You now know exactly how much a sales opportunity is "worth" to your company.
How can you reduce your CPA?
The aim of every marketer is to reduce this figure while maintaining the quality of acquisitions. Here are the main levers:
- More precise targeting: Less waste by showing your ads only to people who have a real chance of becoming customers.
- Optimize your website : Sometimes the problem isn't the ad, but the form is too long or the site too slow. If your site converts better, your CPA drops mechanically.
- Improve your content : A stronger message attracts better quality prospects, who are easier to convince.
Simply manage your performance
Monitoring your CPA on Google Ads on the one hand, Facebook on the other and SEO elsewhere is a tedious task. But it's essential if you want to keep your profitability on track.
GreenRed was designed to simplify this task. Our platform centralizes all your metrics (CPA, traffic, conversions, AI visibility) in a single, clear interface.