Paid Search
08 Jul 2026

What Is Quality Score and How Does It Affect Your Ads?

Qu'est-ce que le Quality Score et comment affecte-t-il vos annonces publicitaires ?
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If you want to control the CPC of your Google Ads campaigns, you need a solid understanding of Quality Score. Your Quality Scores have a massive influence on the cost and effectiveness of your paid search campaigns. Much like your credit score can affect your eligibility for a loan and the interest rate you receive, Google's Quality Score influences your ad performance and how much you pay for each click.

What is Quality Score? Quality Score is Google's assessment of the quality and relevance of your keywords, the relevance of your ads, and the quality of your landing page. It is used to determine your cost per click (CPC) and, combined with your maximum bid, to determine your rank in the ad auction process. Your Quality Score depends on several factors, including:

  • Your click-through rate (CTR)
  • The relevance of each keyword to its ad group
  • The quality, loading speed, and relevance of the landing page
  • The relevance of your ad copy
  • The performance history of your Google Ads account

These are the core components of Quality Score. No one outside of Google knows exactly how much weight each factor carries in the Quality Score algorithm, but we do know that click-through rate is the most important component. Additionally, a growing number of experts also consider conversion likelihood as a determining factor for achieving a high Quality Score. When more people who see your ad click on it, that sends a clear signal to Google that your ads are relevant and useful to users. As a result, Google rewards you with:

* Better ad rankings

* Lower costs

Why is improving your Quality Score important?

Quality Score is directly correlated to your ranking in Google and Bing ads. By optimizing your Quality Scores, you set yourself up for a better return on investment (ROI). High Quality Scores are correlated with a lower cost per conversion. Cost per conversion is different from cost per click. It is not about how much you pay for each click, but how much you pay when someone completes the action you want them to take, whether that is signing up for a free trial or purchasing a product. Since not every click leads to a conversion, cost per conversion is generally higher than cost per click.

As a general rule, the higher your Quality Score, the lower your cost per conversion. Keep in mind that a high Quality Score is Google's way of saying that your ad meets the needs of your potential customers. The better you address the prospect's needs, the less Google will charge you per ad click.

How do you increase your Quality Score?

The Quality Score for Google Ads and Bing Ads determines where and how often your ads appear, so it is important to improve your scores by working consistently on your account. To do this, you can focus your efforts on several key areas:

  • Keyword research: Discover new, highly relevant keywords to add to your campaigns, including long-tail opportunities that can drive a large share of your traffic. 
  • Keyword organization: Break your keywords into groups to cluster them more effectively so that your ads address the same topic as the keywords in the group.
  • Ad copy optimization: Optimize the headlines and body text of your ads. They should include the keywords from the ad group as well as those present on the landing page.
  • Landing page optimization: Make sure the landing page is directly tied to your ad groups. The page should deliver a consistent experience to visitors, from keyword to conversion. It should be well-structured, fast-loading, and feature the same keywords.
  • Negative keyword exclusion: Continuously research, identify, and exclude irrelevant search terms that are wasting your budget.

As you can see, Quality Score is above all a measure of relevance, and improving keyword Quality Scores comes down to structuring your campaigns into small, well-organized, tightly related keyword groups. Better keyword research and organization will naturally improve the quality and specificity of your ads. Your website content allows you to target the exact audience most likely to search for your offerings.

Low Google Ads Quality Scores are primarily the result of a disconnect between keywords, ad groups, ad copy, and landing page content. A high Quality Score comes naturally when a Google Ads account contains keywords organized into appropriate keyword groups, ad copy that matches specific ad groups, and landing pages relevant to the ad copy's offer. While there is no single foolproof answer for improving your Quality Score formula, a strong focus on relevance will go a long way toward boosting your scores.

Want help with your Google Ads or Bing campaigns? Feel free to reach out!