Quality Score: How to Lower Your CPC

By Corey Frankosky · Last Updated August 6, 2026

Improving your Quality Score is the most direct way to lower your cost-per-click in Google Ads while holding onto strong ad positions. Google uses this 1-to-10 diagnostic to judge how relevant your ads are compared to the other advertisers you are competing against in the auction. A higher Quality Score discounts the bid you need to win a top spot, so the same budget buys more clicks. This guide walks you through auditing your account, finding the keywords that are draining money, and fixing the three components that decide your score.

1What Quality Score Is and Why It Lowers Your CPC

Quality Score is a 1-to-10 rating that Google Ads assigns to each keyword based on how relevant your ads and landing pages are to the searches you are bidding on. It is a diagnostic, not a live auction input, but the three components behind it map directly to the signals Google uses to set your actual cost-per-click.

The reason it matters financially is simple. Ad Rank is calculated by multiplying your maximum CPC bid by your quality signals, so a higher Quality Score lets you win the same position at a lower bid. Raising a keyword from a baseline score of 5 to an 8 routinely reduces CPC by 30% to 50%. That means you can double your traffic without adding a dollar to your monthly budget. If you want the full picture on what drives spend, read our breakdown of how much Google Ads actually costs.

Question to Answer:

If you raised your worst-performing keyword from a 5 to an 8, how much lower would your cost-per-click be next month?

2The Three Components of Quality Score

Google builds your Quality Score from three components, and each one gets its own grade of Above Average, Average, or Below Average. You lower your CPC by fixing the components marked Below Average, not by chasing the aggregate number.

• Expected Click-Through Rate: Google's prediction of how likely a user is to click your ad based on the historical performance of that keyword.
• Ad Relevance: How closely your ad copy matches what the user actually searched for.
• Landing Page Experience: How useful, fast, and relevant your destination page is once someone clicks the ad.

The table below shows a common estimate of how the three components map onto the final 1-to-10 score. It is based on third-party analysis rather than an official Google formula, but it is useful for understanding why one weak component can drag your whole score down.

Question to Answer:

Which of your three components is marked Below Average on the keywords costing you the most money?

3Auditing Your Quality Score in Google Ads

Auditing your keyword dashboard is the first step in diagnosing an inflated CPC. Go to the Keywords tab, click the Modify Columns icon, and turn on the Quality Score, Expected CTR, Ad Relevance, and Landing Page Experience columns. Google grades each one on a 90-day historical window, so you are looking at a rolling average rather than a snapshot.

A dash ("-") in the Quality Score column means the keyword has not gathered enough exact match search volume to earn a rating yet. If you add the historical columns, such as Quality Score (hist.), you can see exactly when a score dropped, which usually lines up with a website change or an ad copy edit.

Google itself says Quality Score is a diagnostic and should not be treated as a key performance indicator you optimize or aggregate. Take that seriously. Read the individual component grades instead of fixating on the 1-to-10 number. A keyword sitting at a 6 with a Below Average Landing Page Experience is telling you something specific: the ad copy is fine, but the destination page needs work.

Question to Answer:

Have you turned on all four Quality Score columns in your Keywords tab yet, or are you still guessing?

4Finding High-Spend, Low-Score Keywords

Not every low score is worth fixing. Prioritize the high-impression, high-spend keywords sitting below a 7, because that is where a small improvement returns real money. Elevating a keyword that spends $500 a month from a score of 4 to a 7 routinely cuts CPC by 29%, which saves you $145 every month without giving up a single click.

The component grades tell you what kind of problem you have:

• Below Average Ad Relevance: A structural problem. Your ad groups hold too many loosely related keywords, so the ad never matches the search tightly enough.
• Below Average Expected CTR: A copy problem. Your headlines are not capturing attention against the competitors in the auction.
• Below Average Landing Page Experience: A destination problem. The page is slow, off-topic, or does not deliver what the ad promised.

If a keyword stays stuck between a 1 and a 3 after 30 days of honest optimization attempts, pause it. Continuing to fund a keyword the algorithm has already decided is a poor fit is just budget drain.

Question to Answer:

Which keyword in your account has both the highest spend and a score below 7 right now?

5Improving Expected Click-Through Rate

Expected CTR measures how well your ad has historically earned clicks for its auction position. You improve it by writing specific, benefit-driven headlines. Replacing a vague headline like "Save Money on Shoes" with a precise "Save 37% on Running Shoes" gives the user a concrete reason to click.

Dynamic Keyword Insertion pulls the user's own search term into your headline automatically, which raises perceived relevance. Strong action verbs like "Order Now" help, and so does adding assets. Sitelinks, callouts, and structured snippets make your ad physically larger on the results page, which increases the odds of a click. If broad match is pulling in searches you never intended to bid on, tightening your negative keyword list keeps your CTR from getting diluted by irrelevant impressions.

Question to Answer:

Do your top headlines name a specific number, offer, or benefit, or are they generic?

6Increasing Ad Relevance

Ad Relevance measures how well the search query lines up with the ad copy it triggers. The fix is tighter account structure. Consolidate broad ad groups into tightly themed clusters, or single keyword ad groups, so every ad matches the search that triggered it. Separating "engagement rings" and "wedding bands" into distinct ad groups, for example, keeps Google from serving a wedding band ad to someone searching for an engagement ring.

When you build Responsive Search Ads, pin your exact target keyword to Headline Position 1 so the algorithm always leads with the most relevant version. Then manage your negative keywords aggressively from the Search Terms report so broad match queries do not trigger your ad for unrelated topics. Structure and relevance also feed directly into Ad Rank, so if your ads are getting buried, our guide on fixing a low Ad Rank covers the next layer.

Question to Answer:

How many unrelated keywords are crammed into your lowest-relevance ad group?

7Improving Landing Page Experience

Landing Page Experience measures how satisfied people are after they click. An Above Average page can cut CPCs by as much as 36% while lifting conversion rates well above a Below Average page. The first rule is message match: the H1 headline on your landing page should mirror the headline of the ad that generated the click, so the visitor immediately sees that they are in the right place.

Speed is the second rule. More than half of Google Ads traffic comes from mobile devices, so you want load times under 3 seconds. Use PageSpeed Insights to compress images and set up lazy loading. This is where the biggest wins hide. A dental client of ours improved their Quality Score from 4.8 to 8.2 simply by getting load times under 2 seconds, and their average CPC dropped from $12.50 to $6.80.

Question to Answer:

Does your landing page load in under 3 seconds on a phone, and does its headline match your ad?

8Tools and Help for Ongoing Optimization

Holding a strong Quality Score is not a one-time project. Competitor bids shift, so you keep testing and monitoring. The Google Ads Keyword Planner is a good place to start. Enter a destination URL into the "Discover new keywords" feature and it suggests only terms that relate to that page's content, which keeps your ad groups relevant from the beginning. The "Organize keywords into ad groups" feature then clusters those terms by intent so your Ad Relevance starts high before you ever launch.

If you would rather have this handled for you, our Google Ads management services focus on restructuring Below Average ad groups to lower account-wide CPA. If you run your own account and want a second set of eyes, a Google Ads consulting session gives you a live audit of the exact pages and ad copy dragging your scores down. And if you want to learn the whole system yourself, the Google Ads course walks through it step by step. Pairing Quality Score work with the right bidding strategy is how you keep costs down as you scale.

Question to Answer:

Are you monitoring your Quality Score components on a schedule, or only when your CPC spikes?