What is Cost Per Acquisition (CPA)?

Cost Per Acquisition (or sometimes Cost Per Action), a pricing model and metric that measures the cost to acquire a specific customer action, such as a purchase, signup, or download. CPA shows how much an advertiser spends to get a user to complete the desired goal, making it valuable for evaluating campaign efficiency.

CPA = Total Ad Spend ÷ Number of Acquisitions.

Lower CPA values mean the campaign is driving conversions more cost-effectively.