Quality Score is one of those metrics that everyone knows matters but few agencies manage systematically. Most account managers glance at it occasionally, feel vaguely guilty about the 4s and 5s, and move on to something more urgent.
That's a mistake. Quality Score directly influences your cost-per-click through the Ad Rank formula, and across a portfolio of accounts, even modest improvements compound into real savings for your clients. The problem isn't awareness -- it's process. Agencies need a repeatable system, not ad-hoc spot checks.
What Actually Drives Quality Score
Google breaks Quality Score into three components, each rated Below Average, Average, or Above Average:
- Expected CTR -- Google's prediction of how likely your ad is to be clicked, based on historical performance and position-normalized data.
- Ad Relevance -- How closely your ad copy matches the intent behind the search query.
- Landing Page Experience -- Page load speed, mobile-friendliness, content relevance, and navigation quality.
Understanding the weight of each component matters for prioritization. Expected CTR tends to carry the most influence, followed by landing page experience, then ad relevance. But the exact weighting is opaque and shifts, so treat all three as levers.
One important nuance: Quality Score is calculated at the keyword level, not the ad group or campaign level. The scores you see in the interface are historical snapshots. The real-time score used in each auction can differ based on match type, user context, and device.
The Cascade Effect on CPC and Ad Rank
Ad Rank is calculated as:
Ad Rank = Bid x Quality Score x Expected Impact of Extensions
This means a keyword with a Quality Score of 10 can achieve the same ad position as a competitor bidding roughly 50% more with a Quality Score of 5. Across hundreds of keywords and multiple accounts, this isn't theoretical -- it's the difference between profitable and unprofitable campaigns.
Consider a keyword with a $4.00 CPC and a Quality Score of 5. Moving that to a 7 doesn't guarantee a specific CPC reduction, but historical data across agencies suggests savings of 15-30% per click are common. On a keyword spending $2,000/month, that's $300-600 in monthly savings from a single keyword fix. Use our free CPC calculator to estimate the CPC impact of Quality Score changes on your own keywords.
How to Prioritize Which Keywords to Fix First
Not every low Quality Score deserves your attention. Here's a prioritization framework that works at scale:
Tier 1: High spend + low Quality Score (4-6)
These are your biggest opportunities. Sort keywords by cost descending, filter to Quality Scores below 7, and you have your hit list. A keyword spending $5,000/month at a QS of 5 is a far bigger priority than one spending $50/month at a QS of 3.
Tier 2: High-value keywords with sub-component issues
Look at the three sub-components. A keyword with "Below Average" in only one area is usually fixable. One that's below average in all three might need a fundamentally different approach -- or might not be worth the effort.
Tier 3: Strategic keywords regardless of spend
Brand terms, high-intent converters, and keywords central to a client's positioning deserve attention even at lower spend levels.
Skip list: Keywords with very low search volume, single-digit monthly clicks, or terms you're testing and may pause. Don't waste optimization time on keywords that don't move the needle.
Fixing Each Sub-Component
Expected CTR
This is the hardest to move because it's based on historical performance. Tactics that work:
- Tighten ad group theming. If an ad group contains 30 loosely related keywords, break it into smaller, tighter groups where the ad copy can speak directly to each query.
- Test ad copy aggressively. Run 2-3 responsive search ad variations per ad group. Pin your strongest headlines to positions 1-2 if you have proven winners. Use our A/B test significance calculator to know when you have enough data to pick a winner.
- Use ad extensions generously. Sitelinks, callouts, and structured snippets increase real estate and CTR. Measure the impact with our CTR calculator.
- Review match types. Broad match keywords often inherit lower expected CTR because they trigger on less relevant queries.
Ad Relevance
This is usually the easiest to fix:
- Include the keyword (or close variants) in your headlines. This sounds basic, but audit your accounts and you'll find gaps. (Check your headline character limits before writing.)
- Align ad group structure with ad copy. If you can't write an ad that's directly relevant to every keyword in the group, the group is too broad.
- Use keyword insertion carefully. It can help relevance but hurt ad quality if overused.
Landing Page Experience
This requires coordination with clients, which makes it the slowest to improve:
- Page speed matters. Run Core Web Vitals checks. Pages loading over 3 seconds on mobile are hurting you.
- Content relevance. The landing page should address the specific query, not just the general topic. This often means creating dedicated landing pages for high-value keyword themes.
- Mobile experience. Google evaluates mobile landing page experience separately. Test on actual devices, not just responsive design previews.
- Reduce friction. Intrusive interstitials, difficult navigation, and walls of text all count against you.
Building a Quality Score Monitoring Workflow
Quality Score data doesn't persist in Google Ads reporting by default -- it shows you the current score, not the historical trend. You need to track it yourself.
Weekly data pull: Export keyword-level Quality Score data weekly. Store it in a spreadsheet or database with timestamps. This gives you trend data that Google's interface won't show.
Monthly review cadence: Once a month, review the portfolio for:
- Keywords where QS dropped by 2+ points since last month
- High-spend keywords still sitting below 7
- Newly added keywords that launched with low scores (common with broad match)
Dashboard visibility: Build a simple dashboard showing average Quality Score by account, weighted by spend. This gives leadership a portfolio-level view without drowning in keyword-level detail.
Alerting: Set up alerts for significant drops. A keyword going from 7 to 4 in a week usually means something changed -- a landing page went down, ad copy was swapped, or Google re-evaluated the keyword's relevance.
When to Accept a Low Quality Score
Not every low score is a problem to solve. Here are cases where fighting it isn't worth the effort:
- Competitor brand terms. Bidding on competitor names will almost always produce low Quality Scores. That's expected. The economics may still work even at higher CPCs.
- Broad awareness keywords. Top-of-funnel terms with inherently low CTR will score lower. If they're driving conversions at acceptable costs, the score is cosmetic.
- Low-volume keywords. If a keyword gets 10 clicks a month, optimizing its Quality Score won't materially affect the account.
- Industry-specific terms with limited landing page options. In regulated industries (finance, healthcare), you may not be able to create the ideal landing page. Work within constraints rather than chasing a perfect score.
The key question is always: does the potential CPC savings justify the optimization effort? A Quality Score of 5 on a keyword spending $200/month is a lower priority than onboarding a new client. Agencies that chase perfect scores across the board waste time that could go toward higher-impact work.
Making This Systematic Across Your Agency
The difference between agencies that consistently deliver strong Quality Scores and those that don't isn't knowledge -- it's process. Everyone knows what Quality Score is. The gap is in building it into recurring workflows.
Start with your top 10 accounts by spend. Identify the 20 highest-spending keywords with Quality Scores below 7 in each. Fix the easy wins (ad relevance, missing extensions) first, then work on the harder problems (landing pages, structural changes). Track the before and after.
Once you've done this a few times, you'll have a repeatable playbook and real data showing clients the CPC impact of your optimization work. That's not just good account management -- it's a retention tool. Clients who can see their costs decreasing because of your systematic work are clients who stay.