What It Is: Cost Per Click (CPC) is the amount you pay every time someone clicks on one of your paid ads. It is the core pricing unit of platforms like Google Ads and Microsoft Ads, and it represents the price you agreed to pay to win a single visitor to your site from that specific search.
Formula
CPC = Total Ad Spend / Total Clicks
Total Ad Spend is the money you have put into a campaign over a given period. Total Clicks is the number of times someone clicked your ad during that same period. Divide one by the other and you get the average price you paid per visitor.
Why It Matters
CPC is the number that tells you whether your paid channel can actually work at your margins. A plumber earning $500 on an average job can afford a much higher CPC than a pizza shop earning $20 per ticket. If you do not know your CPC, you do not know whether you are bidding into a profitable lane or bleeding money on searches that will never turn into revenue.
Common Misconception
Most owners think a lower CPC is always better. That is not true. In most local service categories, the cheapest clicks are cheap because they are low intent or from the wrong audience. A $15 click from someone actively searching “emergency plumber near me” is worth far more than a $2 click from someone Googling “how to unclog a drain myself.”
FAQ
What is a good CPC for a local service business?
It varies wildly by industry. Home services like HVAC, plumbing, and roofing commonly see CPCs between $15 and $60. Low-ticket service categories might see $2 to $8. The right question is not “is this CPC low” but “does this CPC allow me to make money at my average job size.”
Can I control my CPC?
Partially. You set a maximum bid, but the actual CPC is determined by the auction, your Quality Score, and what your competitors are willing to pay. Improving ad relevance and landing page quality is the most reliable way to lower your CPC without losing position.
How is CPC different from CPM?
CPC is the price per click. CPM is the price per thousand impressions, regardless of whether anyone clicks. Search ads are usually priced on CPC because you are paying for an action. Display and video ads are often priced on CPM because the goal is exposure.
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