How does Google Ads actually work?

What happens when someone searches?

Google describes it as a lightning-fast ad auction that runs every time someone searches. Your ad is either eligible for that auction or it isn't, and that's decided per search — not bought in advance.

What is Ad Rank?

Ad Rank is what decides whether your ad shows at all, and where. Google says it's calculated from several factors:

Factor	What it means for you
Your bid	The most you'll pay for a click
Quality of your ad and landing page	The part you control for free
Ad Rank thresholds	A minimum standard you have to clear
Competitiveness of the auction	How many others want that search
Context of the search	Device, location, wording, timing
Expected impact of assets	Sitelinks and other extras

So do I pay whatever I bid?

No — and this is the part most people get wrong. Google states you only pay what is minimally required to clear the Ad Rank thresholds and beat the advertiser immediately below you. Your bid is a ceiling, not a price.

Google also says higher quality ads can often lead to lower costs per click. A better ad and a better landing page genuinely make you pay less for the same position.

What is Quality Score then?

Google is clear that Quality Score is not an input in the auction. It's a diagnostic built from expected click-through rate, ad relevance and landing page experience, to show which keywords hurt the user experience. Treat it as a to-do list, not a grade.

What does this mean in practice?

Your landing page is part of your ad cost. If the page doesn't match what the person searched, you pay more per click and convert fewer of them — see what a landing page is and how to run a Google ad.

Want a search campaign that earns its clicks? See our Google Ads service.