Understanding Google Ads Quality Score: The Complete Guide

If you are running Google Ads for your business - or paying an agency to run them for you - there is one metric that has more influence over your campaign performance than almost any other: Quality Score. It affects how much you pay per click, where your ads appear, and whether they appear at all. Yet many advertisers, including some experienced ones, do not fully understand what Quality Score is, how it works, or how to improve it.

This guide will change that. We are going to break down everything you need to know about Quality Score - from the fundamentals to advanced optimisation strategies - with a particular focus on what it means for Australian businesses running Google Ads campaigns.

What Is Quality Score?

Quality Score is a diagnostic metric that Google assigns to each keyword in your Google Ads account. It is reported on a scale of 1 to 10, with 10 being the highest. According to Google's official documentation, Quality Score is an estimate of the quality of your ads, keywords, and landing pages. Higher quality ads can lead to lower prices and better ad positions.¹

It is important to understand that Quality Score is a diagnostic tool - Google has stated that it is not used directly in the ad auction. Instead, Google uses real-time calculations of ad quality at the moment of each auction, taking into account factors that are more granular and dynamic than the 1-to-10 Quality Score you see in your account. However, the Quality Score metric is a reliable indicator of how Google views the quality of your ads and landing pages, making it an invaluable optimisation tool.²

A Brief History

Quality Score was introduced by Google in 2005 as a way to ensure that the ads shown to users were relevant and useful. Before Quality Score, ad position was determined almost entirely by how much an advertiser was willing to pay. This led to a poor user experience, with irrelevant ads appearing at the top of search results simply because the advertiser had deep pockets.

By introducing Quality Score, Google created a system where ad relevance and quality are rewarded alongside bid amount. This benefits everyone: users see more relevant ads, advertisers with quality ads pay less, and Google maintains trust in its advertising platform.

The Three Components of Quality Score

Quality Score is determined by three main components, each of which is rated as "Above Average," "Average," or "Below Average." Understanding these components is essential for improving your Quality Score.

1. Expected Click-Through Rate (CTR)

Expected CTR is Google's estimate of the likelihood that your ad will be clicked when it is shown for a particular keyword. This is not based on your actual historical CTR alone - Google adjusts for factors like ad position, extensions, and other format elements that might affect click-through rates.³

An "Above Average" expected CTR means Google believes your ads are compelling and relevant to users searching for that keyword. A "Below Average" rating suggests that your ad copy is not resonating with searchers or that the keyword is not closely aligned with your ad messaging.

According to data from WordStream, the average click-through rate across all industries in Google Ads is approximately 3.17% for search ads. However, this varies enormously by industry - legal services average around 4.76%, while technology averages 2.09%.⁴

2. Ad Relevance

Ad relevance measures how closely your ad matches the intent behind a user's search. If someone searches for "emergency plumber Sydney" and your ad talks about plumbing services in Sydney with a headline mentioning emergency plumbing, that is highly relevant. If the same search triggers an ad about general home maintenance services, that is less relevant.

Google evaluates ad relevance by looking at the relationship between your keywords, your ad copy, and the search query. This is why account structure matters so much - grouping closely related keywords into tight ad groups with highly specific ad copy is fundamental to achieving strong ad relevance scores.

3. Landing Page Experience

Landing page experience is Google's assessment of how useful and relevant your landing page is to people who click your ad. Google considers several factors when evaluating landing page experience:⁵

• Relevance: Does the landing page content match what the ad promises? If your ad is about "affordable accounting services in Melbourne," does the landing page deliver information about affordable accounting services in Melbourne?
• Usefulness: Does the page provide useful, original content that helps the visitor accomplish their goal?
• Navigation: Is the page easy to navigate? Can visitors find what they are looking for quickly?
• Transparency: Is the business trustworthy? Is contact information easily available? Are there clear privacy policies?
• Load speed: Does the page load quickly, especially on mobile devices? This ties directly into Core Web Vitals.
• Mobile-friendliness: Is the page fully functional and easy to use on mobile devices?

How Quality Score Affects Your Campaigns

Quality Score has two primary impacts on your Google Ads campaigns: it affects how much you pay per click and it influences your ad position.

Impact on Cost Per Click (CPC)

This is where Quality Score becomes a direct financial consideration. Google uses a system called Ad Rank to determine ad position, which is calculated as your maximum bid multiplied by your quality factors (of which Quality Score is a key indicator). The actual CPC you pay is calculated based on the Ad Rank of the advertiser below you, divided by your quality factors, plus one cent.⁶

In practical terms, this means:

• A higher Quality Score can significantly reduce your CPC.
• A lower Quality Score means you pay more for the same position.
• In some cases, a very low Quality Score can mean your ads are not shown at all, regardless of your bid.

Research from WordStream found that for every 1-point increase in Quality Score above the average of 5, your CPC decreases by approximately 16%. Conversely, for every 1-point decrease below 5, your CPC increases by approximately 25%.⁷

Let us put this in Australian dollar terms. If you are paying an average CPC of $3.00 with a Quality Score of 5, improving to a Quality Score of 8 could reduce your CPC to approximately $1.52. If you are spending $3,000 per month on Google Ads, that improvement would either save you approximately $1,480 per month or allow you to get nearly twice as many clicks for the same budget.

Impact on Ad Position

Quality Score also affects where your ads appear on the search results page. Higher quality ads are more likely to appear in the top positions, which generally receive significantly higher click-through rates. According to data from Advanced Web Ranking, the first ad position receives approximately 2.1 times the click-through rate of the second position.⁸

For Australian businesses competing in markets where CPCs are already high - legal services, financial planning, medical services, and other competitive industries - Quality Score optimisation is not optional. It is the difference between a profitable campaign and one that bleeds money.

Strategies to Improve Each Component

Now let us get into the practical strategies for improving each component of Quality Score.

Improving Expected Click-Through Rate

Your expected CTR is primarily influenced by the relevance and compelling nature of your ad copy. Here are proven strategies to improve it:

1. Include keywords in your ad copy. This seems obvious, but it is remarkable how many advertisers fail to do it consistently. When a user searches for "best coffee machine Sydney" and your headline reads "Best Coffee Machines in Sydney," Google sees strong relevance and users are more likely to click.⁹

2. Use responsive search ads effectively. Google's responsive search ads allow you to provide up to 15 headlines and 4 descriptions. Google then tests different combinations to find the best performers. Provide diverse, keyword-rich headlines that cover different angles and value propositions.

3. Leverage ad extensions. Sitelink extensions, callout extensions, structured snippets, call extensions, and location extensions all increase the visual footprint of your ads and provide additional reasons to click. Google has stated that ad extensions can improve CTR by up to 15%.¹⁰

4. Write compelling calls to action. Do not just describe what you offer - tell users what to do next. "Get Your Free Quote Today," "Book Online Now," or "Compare Plans Instantly" are all more compelling than passive descriptions.

5. Test and iterate. Create multiple ad variations and let data guide your decisions. What you think will perform best and what actually performs best are often different things. Use Google's ad strength indicator as a guide, but always prioritise real performance data.

Improving Ad Relevance

Ad relevance is fundamentally about account structure - how you organise your keywords and ad groups.

1. Create tightly themed ad groups. The single most effective way to improve ad relevance is to group closely related keywords into small, focused ad groups. Instead of having one ad group for "plumbing services" with 50 keywords, create separate ad groups for "emergency plumber," "blocked drain repair," "hot water system installation," and so on. Each ad group should contain 5 to 15 closely related keywords with ad copy that directly addresses those specific keywords.¹¹

2. Use single keyword ad groups (SKAGs) for high-value keywords. For your most important and highest-spending keywords, consider creating ad groups with just one keyword. This allows you to craft ad copy that is perfectly tailored to that specific search term. While Google has moved away from recommending this approach universally due to broad match improvements, it remains effective for high-value exact match keywords.

3. Align your keyword match types with your strategy. Broad match keywords can trigger your ads for a wide range of searches, some of which may not align well with your ad copy. Use phrase match and exact match for tighter control, and regularly review your Search Terms report to add negative keywords for irrelevant queries.

4. Use keyword insertion carefully. Dynamic keyword insertion automatically inserts the user's search term into your ad headline. This can improve relevance, but use it carefully - it can sometimes produce awkward or grammatically incorrect headlines.

Improving Landing Page Experience

Landing page experience is often the most neglected component of Quality Score, yet it has a significant impact on both your Quality Score and your actual conversion rates.

1. Match landing page content to ad promise. If your ad promises "free consultation for small businesses," your landing page should prominently feature a free consultation offer for small businesses - not a generic homepage. Create dedicated landing pages for different ad groups to ensure tight message matching.¹²

2. Optimise page speed. Google PageSpeed Insights should be your best friend. Aim for a performance score of 90 or higher on both mobile and desktop. Key optimisations include image compression, code minification, browser caching, and reducing server response time. For Australian businesses, using an Australian-based CDN or hosting provider can significantly reduce latency for local visitors.¹³

3. Ensure mobile excellence. Over 60% of Google searches in Australia are now conducted on mobile devices. Your landing pages must be fully responsive, with easy-to-tap buttons, readable text without zooming, and forms that are simple to complete on a small screen.

4. Build trust signals. Include clear business information, customer reviews, industry certifications, and security indicators (SSL certificate, privacy policy). For Australian businesses, displaying your ABN, membership of relevant industry associations, and references to Australian Consumer Law compliance can all serve as trust signals.

5. Provide clear navigation and calls to action. Make it easy for visitors to take the next step - whether that is calling you, filling out a form, or making a purchase. The primary call to action should be visible without scrolling.

6. Create original, valuable content. Your landing page should provide genuine value to visitors. Include detailed information about your services, answer common questions, and provide evidence of your expertise. Thin landing pages with minimal content typically receive poor landing page experience scores.

Common Quality Score Myths

There is a lot of misinformation about Quality Score circulating in the digital marketing world. Let us address some of the most persistent myths.

Myth 1: Quality Score Is Used Directly in the Ad Auction

As mentioned earlier, the 1-to-10 Quality Score in your account is a simplified diagnostic metric. The actual quality assessment used in the ad auction is more nuanced and calculated in real-time for each individual search. However, Quality Score is a strong indicator of your real-time quality signals, so it remains a valuable optimisation tool.¹⁴

Myth 2: You Need a Quality Score of 10 for Every Keyword

A Quality Score of 10 is ideal, but it is not always achievable or even necessary. For brand keywords, you should consistently achieve 8 to 10. For non-brand keywords, a Quality Score of 7 or above is generally strong. Even a Quality Score of 5 to 6 can be profitable if your conversion rates and margins support it. Focus your optimisation efforts on your highest-volume and highest-value keywords first.

Myth 3: Pausing Low Quality Score Keywords Improves Your Account Quality

Quality Score is assessed at the keyword level, not the account level. Pausing a keyword with a Quality Score of 3 will not improve the Quality Scores of your other keywords. However, if that low-scoring keyword is driving up your average CPC and dragging down campaign performance, pausing it and reallocating the budget to better-performing keywords is good practice.

Myth 4: Quality Score Updates Instantly

Quality Score is not updated in real-time in your account interface. It may take days or even weeks for changes you make to be reflected in your reported Quality Score. Do not make rapid changes based on short-term Quality Score fluctuations - give your optimisations time to be evaluated.

Myth 5: Higher Bids Improve Quality Score

Your bid amount has no direct impact on Quality Score. However, higher bids can result in higher ad positions, which may lead to higher CTRs, which could indirectly improve your expected CTR component over time. But this is an expensive and inefficient way to improve Quality Score. Focus on ad copy, relevance, and landing pages instead.

Australian-Specific Tips for Quality Score Optimisation

While Quality Score principles are universal, there are several considerations specific to Australian advertisers.

1. Australian Spelling and Terminology

Use Australian English in your ad copy and landing pages. Australians search for "tyres" not "tires," "colour" not "color," and "specialised" not "specialized." Using local spelling signals relevance to Australian searchers and can improve both your click-through rate and landing page relevance.

2. Location-Specific Ad Copy

Australia's geography means that location matters enormously in search behaviour. Someone searching for a service in Cairns has very different expectations from someone searching in Melbourne. Use location insertion and create location-specific ad groups for your key markets. An ad that says "Trusted Accountants in Byron Bay" will outperform one that says "Trusted Accountants in Australia" for Byron Bay searchers.

3. Time Zone Considerations

Australia spans multiple time zones, and ad scheduling can affect performance. If your ads are running when your business is closed and you cannot answer calls, your conversion rates will suffer, which indirectly impacts the quality signals Google considers. Ensure your ad scheduling aligns with your business hours and the time zones of your target markets.

4. Mobile Optimisation for Australian Networks

While Australia's major cities have strong mobile network coverage, regional and rural areas can have slower connections. If you are targeting customers outside of capital cities - which is common for businesses in areas like the Northern Rivers, the Sunshine Coast, or regional Victoria - your landing pages need to be exceptionally lightweight and fast-loading to accommodate potentially slower connections.

5. Competitive Landscape Awareness

Australian markets tend to be less competitive than US markets in terms of the number of advertisers, but CPCs can still be substantial in certain industries. According to data from SEMrush, some of the most expensive keywords in Australia include terms related to insurance, legal services, finance, and medical services, with CPCs exceeding $30 to $50 in some cases.¹⁵ In these high-CPC markets, the financial impact of Quality Score optimisation is enormous.

Measuring and Monitoring Quality Score

Effective Quality Score optimisation requires consistent monitoring and measurement. Here is how to set up a monitoring framework.

Accessing Quality Score Data

In Google Ads, you can view Quality Score by navigating to the Keywords tab and adding Quality Score columns to your view. You should add all available Quality Score columns:

• Quality Score (the overall 1-to-10 score)
• Expected CTR
• Ad Relevance
• Landing Page Experience
• Quality Score (hist.) - historical Quality Score data

Creating a Quality Score Dashboard

We recommend creating a regular reporting framework that tracks:

• Impression-weighted Quality Score: Rather than a simple average, weight your Quality Scores by impressions to focus on the keywords that matter most.
• Quality Score distribution: Track the percentage of keywords at each Quality Score level over time.
• Component trends: Monitor how each of the three components (expected CTR, ad relevance, landing page experience) changes over time.
• Quality Score vs. CPC correlation: Track how changes in Quality Score affect your actual cost per click.

Setting Quality Score Goals

Based on our experience managing Google Ads campaigns for Australian businesses, here are benchmark Quality Score goals:

• Brand keywords: 8 to 10
• High-intent commercial keywords: 7 to 9
• Broad awareness keywords: 5 to 7
• Competitor keywords: 3 to 5 (lower Quality Scores are expected here since your landing page will not be as relevant to a competitor's brand name)

Putting It All Together: A Quality Score Action Plan

Here is a step-by-step action plan for improving Quality Score across your Google Ads campaigns:

1. Audit your current Quality Scores: Export your keyword data and identify keywords with Quality Scores below 6. Note which component (expected CTR, ad relevance, or landing page experience) is rated "Below Average" for each.
2. Restructure your ad groups: Reorganise your campaigns so that each ad group contains tightly themed keywords with closely matched ad copy.
3. Rewrite your ad copy: Ensure every ad group has at least one responsive search ad with diverse, keyword-rich headlines and compelling descriptions.
4. Optimise landing pages: Create or improve dedicated landing pages for your key ad groups. Ensure they match the ad promise, load fast, work perfectly on mobile, and provide genuine value.
5. Add extensions: Implement all relevant ad extensions - sitelinks, callouts, structured snippets, call extensions, and location extensions.
6. Clean up your keyword list: Add negative keywords to prevent irrelevant searches from triggering your ads. Pause or remove keywords that consistently underperform.
7. Monitor and iterate: Review Quality Score data weekly and adjust your strategy based on what the data tells you.

Final Thoughts

Quality Score is not just a vanity metric - it is a direct lever that controls how much you pay for Google Ads and how effectively your budget is spent. For Australian businesses competing in an increasingly digital marketplace, optimising Quality Score is one of the highest-ROI activities you can undertake in your paid search campaigns.

The strategies outlined in this guide are not theoretical - they are practical, proven approaches that we implement for our clients every day. Whether you are managing your Google Ads in-house or working with an agency, understanding Quality Score empowers you to make better decisions and demand better results.

If you are looking at your Google Ads account and seeing Quality Scores below 7 on your key keywords, there is likely significant room for improvement - and significant money being left on the table. At ClickTheory, we specialise in building and optimising Google Ads campaigns for Australian businesses, with Quality Score improvement as a cornerstone of our approach. Get in touch if you would like us to take a look at your account and identify quick wins.