Cost Per Lead (CPL)
Also known as: CPL, cost per call
Cost per lead (CPL) is the average marketing spend required to generate one lead, calculated by dividing campaign cost by the number of leads (phone calls included) it produced.
Cost per lead (CPL) divides what you spent on a campaign by the number of leads it generated. When phone calls are a major lead source, leaving them out understates your true volume and makes CPL look worse than it is, which is exactly why call attribution matters for the math.
Comparing CPL across channels tells you where the next marketing dollar works hardest. For pay-per-call models, see pay-per-call lead generation.
Frequently asked questions
Why include calls in cost per lead?
If a campaign drives ten calls and two form fills but you only count the forms, its CPL looks five times worse than reality, and you may cut a profitable channel. Folding attributed calls into the denominator gives an honest number for comparing channels.
What is the difference between cost per lead and cost per call?
Cost per call applies the same formula specifically to phone leads: campaign cost divided by qualifying call conversions. Cost per lead is the broader metric covering every lead type, including forms, chats, and calls.
How is cost per lead calculated?
Divide the total cost of a campaign by the number of leads it produced, counting attributed phone calls alongside forms and chats. A 2,000-dollar campaign that generated 40 leads (calls included) has a cost per lead of 50 dollars.
What is a reasonable cost per lead?
It depends on the vertical and the value of a customer — a few dollars for low-ticket consumer offers, well over 100 dollars in legal or B2B. The useful test is CPL against close rate and customer value, not an absolute number; a higher CPL is fine if those leads convert and are worth more.
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