Why is my Google Ads cost per click so high?
By Olly, AEOscore founder5 min read
Reviewed quarterly; figures re-verified before each update.
Your Google Ads cost per click keeps rising because more advertisers are bidding on fewer clicking humans. The average search CPC hit $5.42 in the 2026 benchmarks, more than double the $2.32 of 2016, and Google’s own SEC filing reports cost-per-click up 7% in the last year alone. Meanwhile the pool of people who click anything is shrinking: 68% of US Google searches now end without a single click. You are not imagining it, and you are not mismanaging your account. The auction itself is getting more expensive, and part of the answer sits outside it.
The numbers, so you can stop blaming your campaigns
WordStream’s 2026 benchmarks, built from 13,474 US search campaigns, put the average cost per click at $5.42. A decade earlier it was $2.32. Their 2025 data measured a 12.88% CPC rise in a single year, with the average cost per lead reaching $70.11.
This is not an agency talking its book. Alphabet’s Q3 2025 quarterly filing to the SEC reports the average cost-per-click on Google Search up 7% year on year, and that is the global average across every market and industry. Individual accounts feel it harder: one analysis of long-running accounts published by Search Engine Land in April 2025 found advertisers absorbing average CPC inflation of 11.75% a year, with some accounts near 17%.
Why it keeps rising
Three forces stack. First, competition: paid search is the default growth channel for every funded competitor in your category, and auction prices track the most desperate bidder. Second, the shrinking click pool: as Google answers more searches itself with AI Overviews, organic clicks fall, and businesses that used to live on free traffic move their budget into ads, bidding against you. Third, automation: broad match and Performance Max push spend toward volume, and the volume that remains is dearer.
In fairness, the very latest data has a bright spot: the 2026 benchmarks show cost per lead falling for the first time in five years, because conversion rates improved as advertisers tightened targeting. PPC still works. It just works at structurally higher prices, for a slice of buyer attention that is quietly moving somewhere your campaigns cannot follow.
Where the buyers went
The people who used to click your ads have not stopped buying. Ofcom’s 2026 survey found 54% of UK adults now use AI tools such as ChatGPT, Copilot or Gemini, and UK visits to ChatGPT grew roughly five-fold in a year. When someone asks an AI “who should I use for X”, there is no auction, no ad slot, and no way to buy your way into the answer.
And the traffic that AI does send behaves like your best customers. Adobe Analytics measured AI-referred shoppers converting 31% better than other traffic in the 2025 holiday season, with revenue per visit up 254% year on year. Semrush research values the average AI-search visitor at 4.4 times a traditional organic visitor. Small channel, high intent, growing over 300% a year.
What a smart budget does about it
- Don’t cancel PPC. It is still the fastest tap you can turn. But stop treating rising CPCs as a campaign problem to optimise away; part of it is structural.
- Measure your AI visibility before you spend another pound.Find out whether ChatGPT, Claude, Gemini, Perplexity and Google’s AI recommend you or your rivals. The free AEO score answers that for any UK business.
- Reallocate a slice, not the budget. A month of the average $70-per-lead spend buys a lot of AEO groundwork: crawlable answer-shaped pages, consistent listings, and presence in the sources AI engines cite. Those earn recommendations you do not pay per click for.
- Watch both channels weekly.A change you cannot compare against last week’s answers is a change you cannot judge, and paid budgets move faster than AI answers do.
The bigger picture
Rising CPCs are one half of a squeeze: the other half is organic clicks disappearing into AI answers. We covered that side, with the same sourced-and-dated rigour, in why your SEO isn’t working, and every statistic in both articles lives on our AI search statistics page, re-verified quarterly. Vendor figures (WordStream, Adobe, Semrush) should be read as directional; Alphabet’s 7% comes from a regulatory filing. All figures checked 7 August 2026.
If your problem is falling impressions rather than rising costs, and a chatgpt.com line has appeared in GA4, start with the diagnostic guide instead: why paid search impressions are falling while ChatGPT referrals rise.