Cost per Lead is your ad spend divided by leads generated, where 'lead' is a defined upstream conversion — newsletter signup, demo request, gated download, free-trial signup. CPL is the right metric when the path from click to revenue is too long for CPA to make sense.
CPL = Ad Spend / Leads Generated
Typical ranges
- Newsletter signup (consumer): €1 – €5
- Free trial signup (B2B SaaS): €5 – €30
- Demo request (mid-market SaaS): €40 – €150
- Enterprise demo (high-ticket B2B): €150 – €600
- Gated whitepaper / ebook (B2B): €15 – €60
CPL only tells half the story
A €10 CPL means nothing without lead-to-customer conversion rate. If 10% of newsletter signups buy something within 90 days, your effective CPA is €100. If it's 1%, it's €1,000. Always pair CPL with downstream conversion to a paying outcome — otherwise you can game CPL by lowering the bar for what counts as a lead.
Common misuses
- Treating raw email captures as 'leads' without filtering for genuine intent — most are dead opt-ins
- Not segmenting CPL by source — paid social CPL is rarely comparable to paid search CPL
- Optimising the lead form for higher conversion (less friction) and seeing CPL fall, then panicking when downstream conversion also falls because the leads got softer