CPC (Cost Per Click)
Cost Per Click is the price you pay each time someone clicks your ad. It's the foundational pricing model for search advertising and a key indicator of competitive density and quality score health.
What it is
CPC is the rate per click you pay on platforms like Google Ads, Bing Ads, and most paid social. It's an output of a real-time auction: your max bid, your Quality Score, your competitors' bids, and the user's context all determine the final price.
How to calculate
Average CPC = Total ad spend / Total clicks.
Example: $5,000 spend / 1,000 clicks = $5 average CPC.
Why it matters
CPC is the unit price of attention. It's also a competitive signal — high CPCs in your category mean lots of advertisers think the keyword is valuable, which usually means it converts well. For behavioral health, top keywords ("rehab near me", "detox center") routinely command $30–$120 CPCs in competitive markets.
Frequently asked questions
Is a high CPC always bad?
No — what matters is CPC × conversion rate vs LTV. A $50 CPC that converts at 8% to a $30K admit is far better than a $5 CPC that converts at 0.5% to a $1K outcome.
How can I lower my CPC?
Improve Quality Score (relevance + landing page experience), tighten match types, add negatives, refine ad copy, improve mobile experience, dayparting.
Why does my CPC fluctuate so much?
Auction-by-auction pricing reflects competitor activity, your Ad Rank, and user signals. Daily and weekly fluctuations are normal; sustained shifts warrant investigation.
