CPA essentials
- The concept: The average price you pay for a specific action (sale, quote, call)
- Calculation : Total budget / Number of conversions obtained
- Utility: Find out whether your advertising is profitable or costing you more than it's worth
- The golden rule: A "good" CPA depends on the value of what you sell
In the world of digital marketing, we love acronyms. But if there's only one you need to remember to keep an eye on your portfolio, it's the CPA or Cost per Conversion (sometimes called Cost per Acquisition).
Simply put, CPA answers the question every business owner asks: "How much did I have to spend on advertising to get this new customer? It's the truth indicator that links your marketing spend to your actual results.
How do you calculate your CPA?
The calculation is refreshingly simple. Just divide your total bet by the number of results you get.
CPA = Total expenditure / Number of conversions
Example: You spend €1,000 on Facebook Ads in one month. You get 50 requests for quotes. Your CPA is €20.
Is it a good number? It all depends on what you're selling! If a quote gives you an average profit of €500, it's a great deal. If you sell a product for €15, you're losing money.
Why is the CPA your best strategic ally?
Keeping track of your CPA will help you avoid unpleasant surprises:
- Optimize your budget: Comparing the CPA of Google Adsand your social networks, you can immediately identify the most profitable channel
- Adjust your campaigns : If your CPA suddenly climbs, something is wrong (tired advertising, increased competition, slow site). That's your red flag
- Making calm decisions: With a controlled CPA, marketing becomes a predictable investment. You know that for every X euros invested, you'll get Y customers
Pitfalls to avoid
Be careful not to become "addicted" to the lowest possible CPA:
Low CPA (€5-10)
- High volume of leads
- But often unqualified
- Curious" prospects
- Low closing rate
Student CPA (€50-100)
- Fewer leads
- But very qualified
- Premium customers
- Best LTV