Google Ads Quality Score Optimization: The Complete Playbook for 2026

Quality Score is the single most impactful lever in your Google Ads account. A keyword with a Quality Score of 9 pays roughly 50% less per click than one with a Quality Score of 5 — for the exact same ad position. Yet most advertisers treat Quality Score as an afterthought, checking it once and moving on. This playbook gives you a systematic, repeatable process to optimize Quality Score across your entire account.

We are not talking about generic advice like 'write better ads.' This guide breaks Quality Score into its three components — Expected CTR, Ad Relevance, and Landing Page Experience — and gives you specific, testable actions for each one. Whether you manage a single campaign or hundreds, this framework scales.

Understanding the Quality Score Formula

Google calculates Quality Score using three components, each rated as Above Average, Average, or Below Average. While Google does not publish the exact weighting, extensive testing across thousands of accounts shows that Expected CTR carries the most weight (approximately 40%), followed by Ad Relevance (30%) and Landing Page Experience (30%). This means if you can only fix one thing, improving your Expected CTR will have the largest impact.

Quality Score is calculated at the keyword level, not the ad group or campaign level. This means you need to diagnose and fix issues keyword by keyword, starting with your highest-spend keywords where improvements save the most money.

Step 1: Audit Your Current Quality Scores

Before optimizing anything, you need a clear picture of where you stand. Export your keyword report with these columns: Keyword, Quality Score, Expected CTR, Ad Relevance, Landing Page Experience, Impressions, Clicks, Cost, and Conversions.

Prioritization framework

• Tier 1 (fix first): Keywords with QS 1-4 AND monthly spend above 100 euros — these are your biggest money drains
• Tier 2: Keywords with QS 5-6 AND high conversion rates — small QS gains here directly increase ROI
• Tier 3: Keywords with QS 7+ — maintain and protect, do not ignore them
• Ignore: Keywords with fewer than 50 impressions/month — not enough data for Google to score accurately

For each Tier 1 keyword, note which component is Below Average. That tells you exactly where the problem lies and prevents you from wasting time fixing the wrong thing.