Quality Score

Understanding Quality Score

Google uses Quality Score to determine which ads to show and how much to charge. A higher Quality Score means you pay less per click and get better ad positions. The score is calculated from three components: expected click-through rate, ad relevance, and landing page experience. Each is rated as below average, average, or above average.

For e-commerce stores, landing page experience is often the most actionable component. Google evaluates page load speed, mobile-friendliness, content relevance to the search query, and overall user experience. A product page that loads slowly, has thin content, or does not match the ad promise will drag down your Quality Score and increase your costs.

The financial impact of Quality Score is substantial. An advertiser with a Quality Score of 8 might pay $0.50 per click while a competitor with a Quality Score of 4 pays $1.50 for the same position. Over thousands of clicks per month, this difference adds up to significant savings or waste. Improving Quality Score from 5 to 7 can reduce cost per click by 28% or more.

Quality Score is calculated at the keyword level, not the account level. This means you need to ensure each keyword group has tightly relevant ad copy and a landing page that directly addresses the search intent behind those keywords. Generic ads pointing to your homepage will always score lower than specific ads pointing to relevant product or category pages.