CPA
CPA (Cost Per Action) - the cost of one target action: purchase, registration, subscription. CPL is a special case of CPA where action = lead.
CPA - Cost Per Action, the cost of one targeted action. The action can be anything: purchase, filling out a form, downloading a PDF, registering for a webinar.
CPA differs from CPL in that a lead is often only a signal of interest (enquiry, contact), and an action is closer to the final target action (payment, registration). It is important for a marketer to distinguish: CPL gives a “cold” signal, CPA gives a “warm” one.
I set up two- or three-level CPA in projects: the first is a lead (CPL ~500 ₽), the second is a call back (~1500 ₽), the third is a payment (~3000 ₽). This gives you an understanding of at what step of the funnel money is lost.
In advertising platforms (VK Ads, Ya.Direct) CPA can be set as target optimization - the algorithm will strive for the specified cost of action. This works, but requires a sufficient amount of data (at least 50 events per week), otherwise the algorithm does not learn.
Frequently asked questions about CPA
What is CPA in simple words?+
How is CPA different from CPL and CAC?+
What CPA is considered good in 2026?+
How to reduce CPA by 30%?+
Related terms
Where is it understood in practice?
Need to set this up on your project?
I analyze metrics, calculate unit economics and collect funnels on real budgets. 30 minutes on call - free.