Two advertisers can bid on the same keyword, and the one with the better Quality Score pays less per click and still ranks higher. That is not a quirk; it is the design. Google wants users to click ads that match their intent, so it discounts advertisers whose ads, keywords, and landing pages line up. Quality Score is how that discount is calculated, and understanding it is the cheapest optimisation in your account.
What Quality Score actually measures
The score runs from 1 to 10 and is reported at the keyword level. It is built from three components, each rated below average, average, or above average: expected click through rate, ad relevance, and landing page experience. Expected CTR asks whether your ad is likely to be clicked for this keyword, based on history. Ad relevance asks whether the ad text matches the keyword's intent. Landing page experience asks whether the page you send people to is relevant, useful, and easy to use.
Two things people get wrong. First, the score is a diagnostic, not a goal. Chasing a 10 on every keyword can waste more effort than it saves. Second, the number you see is historical and auction time factors differ; a keyword with a 6 can still win auctions profitably if the economics work. Use the score to find problems, not to keep score.
What moves each component
Expected CTR improves when your ad matches the search intent precisely. That means tight ad groups: a handful of closely related keywords per group, ad copy that mirrors what the searcher typed, and ad extensions that add useful reasons to click. Broad, lazy ad groups where one ad serves thirty unrelated keywords are the classic cause of below average expected CTR.
Ad relevance is the simplest fix and the most skipped. If someone searches for a specific service, the ad should name that service, not your company slogan. Dynamic keyword insertion can help, but a genuinely written ad for a tight keyword cluster beats automation papering over a sloppy structure.
Landing page experience is where most accounts bleed money quietly. The page must deliver what the ad promised, load fast on mobile, and make the next step obvious. A generic homepage as the landing page for every ad group is the single most common Quality Score killer we see. Match the page to the keyword's intent, keep the headline consistent with the ad, and remove friction from the conversion step.
| Component | What Google checks | Fix that moves it |
|---|---|---|
| Expected CTR | Likelihood the ad gets clicked for the keyword | Tight ad groups, intent matched copy, useful extensions |
| Ad relevance | How well the ad matches the keyword | Ad text that mirrors the search term and its intent |
| Landing page experience | Relevance, usefulness, and usability of the page | Dedicated landing pages, fast mobile load, clear next step |
Raise scores in this order
One tight intent per group. No more thirty keyword grab bags.
Mirror the keyword in the headline. Promise only what the page delivers.
Dedicated page per intent. Fast on mobile. One clear action.
Pause keywords that never convert. Budget follows winners.
What to ignore, and the real payoff
Ignore the temptation to optimise the score instead of the business. A keyword with a Quality Score of 5 that converts profitably is better than a 9 that brings tyre kickers. Ignore account level averages too; one terrible keyword can drag the average while the rest of the account is fine. Work keyword by keyword, starting with the highest spend.
Structure first: the account setup behind good scores
Quality Score rewards relevance, and relevance starts with structure. The modern approach is intent based ad groups: each group holds keywords that share one clear intent, served by ads written specifically for that intent. Gone are the days of single keyword ad groups for everything; today a tight theme per group plus responsive search ads gives Google room to match while keeping your message focused. What has not changed is the discipline: if one ad cannot serve every keyword in the group convincingly, the group is too broad.
Match types and negatives do quiet work here. Review the search terms report weekly in a new account, and add negatives for the irrelevant queries before they spend real money and drag down click through rates. A clean search terms report is a leading indicator of a healthy Quality Score, because every irrelevant impression you prevent is one less data point telling Google your ad does not match.
The payoff is concrete: better scores mean lower cost per click for the same position, which means the same budget buys more qualified traffic. Combined with a retargeting layer for the visitors who do not convert immediately, which our retargeting strategy guide covers, Quality Score work is the highest ROI maintenance in paid search. If the account is too far gone for DIY, our Google Ads management starts with exactly this cleanup.