Quality Score: how relevance lowers your costs?

Two advertisers can target the same search. One pays less and still appears higher. The reason is not just budget — and understanding it can change how much you spend on every click.

Two companies want their ad to appear when someone searches "project management software."

Company A is willing to pay up to $5 each time someone clicks their ad. Their ad says "Great Business Solutions" and sends people to their general homepage.

Company B is willing to pay up to $3 per click. Their ad says "Project Management Software — Free Trial" and sends people to a page specifically about their project management tool.

Company B pays less per click. But their ad appears above Company A in the search results.

How? Google does not just look at who is willing to pay the most. It also scores how useful each ad is to the person searching. This score is called Quality Score — a rating from 1 to 10 that Google assigns to each ad based on how well it matches what the searcher is looking for.

Company A's ad is vague and sends people to a generic page. It gets a Quality Score of 4 out of 10. Company B's ad matches the search and leads to a relevant page. It gets an 8 out of 10.

Google combines the two factors — how much you are willing to pay (your bid) and how relevant your ad is (your Quality Score). Every time someone searches, Google runs an auction: it compares all advertisers and ranks them using bid × Quality Score. That is why a more relevant ad can win a higher position at a lower price.

Some analyses suggest that improving Quality Score from 5 to 8 can reduce cost per click by roughly 30-50%, though the exact impact varies by auction.

Quality Score is measured on a scale of 1-10 for each keyword (each search term you target) in your Google Ads account. It is based on three components:

1. Expected click-through rate (CTR): How likely is your ad to get clicked compared to other ads for the same search?
2. Ad relevance: How closely does your ad match what the person is searching for?
3. Landing page experience: How useful is the page people land on after clicking your ad?

Each component is rated as "below average," "average," or "above average." CTR and landing page experience carry the most weight. Ad relevance has a smaller but still meaningful impact.

What Google measures

Google compares your ad's historical CTR to other ads for the same keyword. If your CTR is higher than average, you get an "above average" rating.

How to improve it

Include the keyword in your ad

Ads that contain the searched term tend to get clicked more often — because Google bolds the matching words in the ad, and seeing their exact query in the headline confirms relevance.

Strong call to action

Tell people what to do: "Start Free Trial," "Get a Quote," "See Pricing." A clear next step reduces uncertainty — the searcher knows what happens when they click.

Use ad extensions

Ad extensions are additional pieces of information attached to your ad — extra links, highlights, or product details. They make your ad take up more space on the page, which increases visibility and tends to increase clicks.

Test multiple variations

Run several ads per ad group (a set of related keywords that share the same ads). Google's system shows the better-performing ads more often, which improves the group's average CTR.

What Google measures

Does your ad directly address what the person is looking for? If someone searches "accounting software for freelancers" and your ad says "Business Solutions for Enterprises," there is a relevance mismatch.

How to improve it

Tight ad groups

Each ad group should contain closely related keywords. If one ad group contains both "project management software" and "time tracking app," a single ad cannot be highly relevant to both.

Keyword in headline

Include the exact keyword or a close variant (a slight variation like plural or reordered words) in your headlines.

Match intent, not just words

Someone searching "how to choose project management software" wants information. Someone searching "project management software pricing" wants to buy. The ad copy should match the intent, not just contain the keyword.

What Google measures

• Does the page deliver what the ad promised?
• Is the content relevant to the keyword?
• Is the page easy to navigate?
• Does it load quickly?
• Is it mobile-friendly?

How to improve it

Match landing page to ad

If your ad promotes "CRM (customer relationship management) software for Real Estate," the landing page should be about CRM for real estate — not your generic homepage.

Fast load times

Slow pages hurt Quality Score — because people who click an ad expect a fast answer, and if the page takes too long, they click back and try a different result. A common benchmark is under 3 seconds.

Mobile optimization

A large share of search ad clicks come from mobile devices. If a page is hard to use on a phone, it receives a lower rating.

In Google Ads, you can see which component is rated "below average" for each keyword.

Below average CTR → Test new headlines and calls to action. Add extensions.

Below average ad relevance → Split broad ad groups into tighter, more specific groups. Make sure the keyword appears in the ad.

Below average landing page → Create a dedicated page that matches the keyword. Check load speed and mobile experience.

Quality Score is a diagnostic tool, not the ultimate goal.

Low-volume keywords — Keywords with very few searches may have unreliable scores because there is not enough data to calculate them accurately.

Brand terms — Keywords that include your own company name (for example, "Nike shoes" for Nike) typically score high naturally. Focus improvement efforts elsewhere.

New campaigns — Quality Score takes time to stabilize because Google needs click history. New keywords may show low scores initially.

Profitability matters more than score — A keyword with Quality Score 5 that leads to profitable sales is more useful than a keyword with Quality Score 10 that gets clicks but no sales.