Cost Per Click
Cost per click (CPC) is the amount an advertiser pays each time a user clicks an ad, set in real time through an auction. The auction runs on the major ad platforms (Google Ads, Meta, Microsoft Ads, LinkedIn, TikTok, Amazon) and varies widely by industry, keyword, audience targeting, ad quality, and competitive intensity. It is the unit price of paid traffic and the most-watched number on a paid-acquisition team's daily dashboard. It is also one of the easiest metrics to over-optimize.
CPCs are set by auction, not by list price. On Google Ads, the auction takes the advertiser's max bid and multiplies it by Quality Score (a 1 to 10 measure based on expected click-through rate, ad relevance, and landing-page experience) to determine Ad Rank; higher Quality Score lowers effective CPC for the same position. Industry CPC ranges in 2025 commonly look like: e-commerce $0.50 to $3, B2B SaaS $3 to $15, legal $10 to $80+, insurance $15 to $60, mortgage $20 to $50 (WordStream and Google Ads benchmarks). Meta CPCs typically run $0.50 to $3 for consumer audiences and higher for B2B targeting. LinkedIn CPCs typically run $5 to $15. The reason CPC ranges this widely is that competitive industries with high LTV (legal, finance, insurance) can profitably bid more for each click, which sets the market clearing price for everyone else in the auction.
Ryan's Take
CPC is the metric founders watch when they want to feel like they are doing something. Lowering CPC feels productive, looks good in a slide, and is almost always the wrong place to optimize. The traffic at the lower CPC usually converts worse, because cheap clicks are cheap for a reason: less intent, lower-quality placement, broader match. The right metric is cost-per-paying-customer, not cost-per-click. If a $5 click brings in customers at $400 CPA and a $0.40 click brings in customers at $1,200 CPA, the expensive click wins. Stop optimizing the top of the funnel in isolation. The auction does not pay you back. The customer does.
What founders get wrong: Treating CPC as the optimization target instead of as an input to CPA. A campaign with a "great" $0.40 CPC and a $1,200 CPA is losing money faster than one with a "bad" $4 CPC and a $200 CPA. Always evaluate clicks against what they convert to downstream, not against other clicks.
Related: Cost Per Acquisition · Click Through Rate · Paid Acquisition · Paid Search · Return On Ad Spend
FAQ
What is cost per click?
The amount an advertiser pays each time a user clicks on a paid ad, set in real time through an auction on the major ad platforms (Google Ads, Meta, Microsoft Ads, LinkedIn, TikTok, Amazon) and varying widely by industry, keyword, audience, ad quality, and competition.
What is a good CPC?
There is no universal good CPC. Ranges in 2025: e-commerce $0.50-$3, B2B SaaS $3-$15, legal $10-$80+, insurance $15-$60, mortgage $20-$50, LinkedIn ads $5-$15. The right CPC is whatever produces a CPA that fits your LTV and payback math, not whatever benchmark says is "low."
How is CPC calculated in Google Ads?
By auction, not list price. The advertiser's max bid is multiplied by Quality Score (a 1-10 measure based on expected CTR, ad relevance, and landing page experience) to determine Ad Rank. Higher Quality Score lowers effective CPC for the same auction position.
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