PPC

The Complete Guide to Google Ads Quality Score in 2026

10 March 2026 8 min read

Quality Score is one of the most important metrics in Google Ads, yet it remains one of the most misunderstood. It directly impacts how much you pay per click and where your ads appear. Getting it right can mean the difference between a profitable campaign and one that bleeds money.

What Is Quality Score?

Quality Score is Google's 1-10 rating of the quality and relevance of your keywords, ads, and landing pages. It's calculated at the keyword level and consists of three main components:

Expected Click-Through Rate (CTR): How likely your ad is to be clicked based on historical performance
Ad Relevance: How closely your ad copy matches the intent behind the search query
Landing Page Experience: How relevant, useful, and fast your landing page is for the user

Why Quality Score Matters for Your Budget

Quality Score directly affects your Ad Rank (the formula Google uses to determine ad position) and your actual cost per click. A higher Quality Score means you pay less for the same position — or get a higher position for the same bid.

In practical terms, improving your Quality Score from 5 to 8 can reduce your CPCs by 30-50%. For a campaign spending £5,000 per month, that's £1,500-2,500 in savings without losing any traffic.

Pro Tip: Don't obsess over Quality Score as a vanity metric. Focus on the three components individually and the score will follow. A Quality Score of 7+ for branded terms and 5+ for competitive terms is a healthy baseline.

How to Improve Expected CTR

Expected CTR is influenced by your historical click-through rate compared to other advertisers in the same position. Here's how to improve it:

Write compelling ad headlines that include your target keyword
Use all available ad extensions (sitelinks, callouts, structured snippets)
Test multiple ad variations and pause underperformers
Use responsive search ads with diverse headline options
Include numbers, offers, or urgency in your ad copy

Improving Ad Relevance

Ad relevance measures how well your ad matches the search query. The key is tight ad group structure:

Keep ad groups tightly themed with closely related keywords
Include the primary keyword in at least one headline
Match the search intent — informational queries need different ads than purchase-ready queries
Use dynamic keyword insertion sparingly and only where it makes grammatical sense

Optimising Landing Page Experience

Your landing page needs to deliver on the promise of your ad. Google evaluates:

Relevance: Does the landing page content match the ad and keyword?
Load speed: Pages should load in under 3 seconds on mobile
Mobile-friendliness: Fully responsive design is essential
Useful content: Original, helpful content that answers the user's query
Trust signals: Clear contact information, privacy policy, and secure checkout

Putting It All Together

Quality Score improvement is an ongoing process. Start by identifying your lowest-scoring keywords and address the weakest component first. Regularly review your search terms report to find negative keyword opportunities and ensure your ads stay relevant.

If you're spending significant budget on Google Ads and your Quality Scores are below average, there's likely substantial savings to be found. Get in touch for a free account audit where we'll identify your biggest Quality Score opportunities.