Google AI Overviews now appear on close to half of all search queries. When they do, organic clicks drop by nearly 40 per cent. And 68 per cent of all US Google searches end without a click at all. These are not projections. They are measured outcomes from the first half of 2026, and they are reshaping what organic search is actually worth for Australian businesses.
We have been tracking this shift across our client campaigns at 21 Webs since AI Overviews expanded into Australia. This article lays out the data, the causal evidence, and the practical implications for anyone buying, selling or reporting on SEO in Australia right now.
The core question is simple: if your page ranks in the top three but the searcher never clicks, what is that ranking worth? The answer is more nuanced than zero, but it is a lot less than it was two years ago.
The Zero-Click Finding: 68 Per Cent of Searches Now End on the Page
The most comprehensive tracking of zero-click behaviour comes from research published in June 2026 using a major US desktop and mobile clickstream panel. The finding: 68.01 per cent of US Google searches ended without a click in the first four months of 2026, up from 60.45 per cent in 2024 (industry clickstream research, June 2026). That is a 7.56 percentage-point increase in two years, the fastest acceleration since tracking began.
Put that in plain terms. A zero click search is one that ends on the results page, with the answer delivered before a single website is visited. For every 1,000 Google searches, only 276 clicks now reach the open web. Down from 374 in 2024.
Australia does not have an equivalent clickstream study at this scale. However, the trajectory is consistent across English-speaking markets. The UK shows a zero-click rate of approximately 62 per cent (industry data, 2024). Australia, as a comparable market with similar AI Overviews rollout timing, likely sits in the 58 to 65 per cent range for overall searches. On queries where AI Overviews appear, the rate climbs substantially higher: research from early 2025 measured an 83 per cent zero-click rate on AI Overview queries, and 93 per cent in Google’s AI Mode (industry survey data, 2025).
These are not theoretical figures. They show up in every Search Console account we manage. Impressions are climbing. Clicks are not keeping pace. And the gap is widening quarter on quarter.
Here is what that looks like inside a single account. A service page that sits in positions 2 to 4 for a commercial keyword will show impressions rising while clicks stay flat or slip. The page is being shown more often, in more surfaces, including AI Overview source panels. The user sees the answer, sees the brand name, and moves on. The ranking is doing its job. The click is not arriving.
The Causal Finding: AI Overviews Cut Organic Clicks by Nearly 40 Per Cent
Until 2026, most evidence for AI Overviews reducing clicks was observational: before-and-after comparisons that could not fully separate cause from correlation. That changed in April 2026 when two academic researchers published the first randomised field experiment isolating the causal impact of Google AI Overviews on publisher traffic (working paper, April 2026, revised June 2026).
The study is worth understanding in detail, because it is the strongest evidence available:
Method: The researchers built a Chrome extension that randomly assigned 1,065 US desktop Chrome users to three groups. A control group saw Google normally. A “Hide AIO” group had AI Overviews removed in real time, with organic results shifting up to fill the gap. A third group was redirected to AI Mode. The study ran for two weeks per participant in January-February 2026. Over 95 per cent of participants in the Hide AIO group did not detect any change.
Key finding: AI Overviews appeared on 42 per cent of queries. Where they appeared, displaying the AI Overview produced an average of 0.37 external organic clicks per search. Hiding it produced 0.62 clicks per search. That is a reduction of approximately 40 per cent in outbound organic clicks caused by the AI Overview.
Zero-click impact: Zero-click searches rose from 54 per cent to 73 per cent on queries where the AI Overview was shown versus hidden.
Paid clicks unaffected: Sponsored click volume was flat across both groups (0.02 per search). The damage is concentrated entirely in organic, not paid.
No quality improvement: Survey evidence showed no measurable improvement in perceived search quality, ease of finding information or user satisfaction when the AI Overview was present.
Click quality unchanged: When a click did occur, downstream engagement (time on page, bounce rate) was not different between the groups. This directly challenges the claim that AI Overviews only remove “low-value” or “bounce” clicks.
This is a critical finding for any Australian business evaluating its SEO investment. The organic clicks that AI Overviews remove are not junk traffic. They are the same quality of visit you would have received without the overview. The volume is simply being absorbed by Google’s answer layer.
For us, the experiment settled a debate that has been running since AI Overviews first appeared. Before it, you could argue the traffic loss was a coincidence of layout changes. You cannot argue with a controlled trial. The lesson we take into every client conversation is that the organic click is now a signal of answer-layer failure, not a measure of brand health. The brand exposure is happening either way.
The Exposure Finding: Google AI Overviews Are Now on Nearly Half of All Searches
The scale of AI Overview deployment has expanded rapidly:
AI Overviews appear on approximately 48 per cent of tracked search queries in early 2026, a 58 per cent year-on-year increase across nine commercial verticals (industry tracking data, February-March 2026).
Google’s own disclosure places the figure at “roughly 50 per cent of US queries” (blog.google, confirmed at I/O 2025 and 2026).
AI Mode, Google’s conversational search layer, separately crossed 1 billion monthly users by May 2026, up from 75 million daily active users less than a year earlier. At I/O 2026, Google expanded AI Mode with “Personal Intelligence” to nearly 200 countries and 98 languages.
AI Overviews reach over 2 billion monthly users globally, across 200+ countries and 40+ languages.
The industry-by-industry variation is significant. Healthcare queries trigger AI Overviews at approximately 88 per cent. Education at 83 per cent. B2B technology at 82 per cent. Restaurants at 78 per cent. E-commerce at 14 per cent and growing (a 5.6x increase from November 2024 to March 2026). If your industry has a high AI Overview trigger rate, the click impact on your organic traffic is proportionally larger.
The practical read for an Australian business is blunt. If your vertical sits in the 80s for AI Overview trigger rate, you should assume the click decline is structural and price your marketing accordingly. If your vertical sits closer to the e-commerce figure, you still need the AI visibility layer, but the urgency looks different. The trigger rate tells you how fast your industry is moving, and you should move first.
The market share story matters here. Gartner predicted in February 2024 that traditional search engine volume would drop 25 per cent by 2026. Whether or not the full 25 per cent has materialised, Google still holds over 90 per cent of the search market share, so this is not a story of users leaving Google. It is a story of users getting answers without leaving the results page. The behavioural shift Gartner described is clearly visible in the data.
The Citation Finding: Position Is No Longer the Value Pool
This is where the economics of organic search fundamentally change.
Research published in early 2026 found that only 17 per cent of AI Overview citations come from pages ranking in the organic top 10 (industry tracking data, February-March 2026). That is a dramatic decline from 76 per cent in mid-2024.
Read that again. In mid-2024, three-quarters of AI Overview citations came from pages already in the top 10. Eighteen months later, that figure dropped to less than one in five. The AI citation system has decoupled from the organic ranking system.
What this means practically:
A top-three ranking is no longer a reliable proxy for AI visibility. You can rank position 1 for a target keyword and still not appear in the AI answer for that query. We see this regularly in our client data.
Pages outside the top 10 can and do get cited. If they carry the right signals: entity consistency, structured data, review corroboration, third-party mentions.
The value pool has moved from position to citation. The old question was “where do we rank?” The new question is “are we cited in the answer?” Both matter. But the second one is increasingly where the commercial value lives, because the AI answer is what the majority of searchers now see and act on.
We covered the full mechanics of how AI citation differs from traditional ranking in our analysis of what AI SEO is and how it differs from traditional SEO.
The Monetisation Finding: Ads in the AI Answer Layer
Google has been steadily expanding ad placement within and alongside AI Overviews:
Ads appeared on approximately 3 per cent of AI Overview SERPs in January 2025. By November 2025, that figure had grown to approximately 40 per cent, a more than thirteen-fold expansion (industry tracking data, 2025). The new layout is being monetised fast.
Being cited in the AI answer lifts paid performance. When your business appears in the organic AI Overview answer and a paid ad runs alongside it, the combined visibility creates a reinforcing signal. Early data suggests AI-referred visitors convert at significantly higher rates than traditional organic visitors, even though the volume is smaller.
Google’s revenue tells the story. Search revenue hit USD $63.07 billion in Q4 2025, up 17 per cent year on year. Generative AI product revenue surged approximately 400 per cent over the same period (Google parent company Q4 2025 earnings). Google is monetising the AI answer layer successfully, even as organic click-through declines. The incentive structure is not aligned with sending more traffic to publishers.
For Australian businesses, the monetisation finding carries a specific implication: if you are running paid search alongside organic SEO, your paid campaigns now need to account for the AI answer layer. Being cited in the AI Overview while also running ads for the same query creates a compound visibility effect that neither channel delivers alone.
There is also a strategic angle for agencies here. The client who is being told “your organic traffic is down” without any mention of the AI answer layer is being sold an incomplete diagnosis. The honest conversation separates the structural decline from the controllable work, and then does the controllable work. That is the difference between reporting a problem and managing it.
The Measurement Finding: Stop Burying the Decline
Here is the most common reporting failure we see in Australian SEO right now: agencies presenting a report that shows impressions growing and declaring the campaign a success, while clicks are flat or declining and the client does not know why.
The divergence is not a mystery. It is the zero-click economy. Impressions grow because queries grow and because Google shows your pages in more contexts (including AI Overviews). Clicks decline because the AI answer absorbs the visit that would have gone to your site.
If your agency is not separating these metrics and explaining the divergence, they are either not paying attention or not being honest. Neither is acceptable.
Here is the measurement framework we use at 21 Webs:
Separate AI-answer exposure from clicks. Search Console now provides data on AI search surfaces. Use it. Track how often your pages appear in AI contexts versus traditional results.
Track citation rate alongside click-through rate. For every target query, are you cited in the AI answer? This is now as important as your click-through rate, because citation drives brand exposure even when it does not drive a click.
Report the divergence directly. If impressions are up 30 per cent and clicks are down 10 per cent, say so. Explain that the gap is structural, not a performance failure. Then show what you are doing about it: building citation signals, optimising for AI surfaces, diversifying traffic sources.
Never present a traffic report without conversion context. Clicks are declining, but the clicks that do come through AI citations convert at higher rates. We documented this in detail in our analysis of how AI traffic converts differently in 2026. If you are measuring raw clicks without looking at what those clicks are worth in leads and revenue, you are measuring the wrong thing.
That last one is the one we see missed most often. A client sees a declining click chart and assumes the channel is dying. The same chart, with a conversion line overlaid, tells a different story: fewer clicks, better ones, and a revenue number that holds.
The Implication: What a Top-Three Ranking Is Actually Worth Now
Let us walk through the maths.
In 2024, a position-1 ranking on desktop had an average click-through rate of roughly 27 to 30 per cent (industry benchmarks, multiple sources). For a keyword with 1,000 monthly searches, that meant approximately 270 to 300 clicks per month.
In 2026, on queries where AI Overviews appear:
The overall zero-click rate is approximately 83 per cent.
Organic clicks are reduced by approximately 40 per cent based on the field experiment finding.
Position-1 desktop CTR drops to roughly 10 to 15 per cent when an AI Overview is present (industry analysis, December 2025).
For the same 1,000-search keyword, you are now looking at approximately 100 to 150 clicks. That is roughly half the traffic for the same ranking position.
This does not mean the ranking is worthless. It means its value has changed form. A position-1 ranking now delivers:
Direct clicks (reduced). Fewer than before, but still real and still valuable, especially for branded and high-intent transactional queries where users scroll past the AI answer.
AI citation visibility (new). If your page is cited in the AI Overview, your brand, your data and your expertise are exposed to the majority of searchers who never click. This is brand exposure that did not exist in the pre-AI-Overview era.
Citation-driven conversions (higher value). When someone does click through from an AI citation, they tend to convert at higher rates than traditional organic visitors. The AI answer has already pre-qualified them. They are clicking because the AI recommended you, not because you happened to rank.
The pricing implication for Australian SEO is significant. If the volume a ranking delivers has dropped by 30 to 50 per cent on AI Overview queries, then either the price of SEO needs to reflect that reduced volume, or the scope of SEO needs to expand to include the AI citation layer. At 21 Webs, we have chosen the second path: our SEO services now include AI visibility tracking and citation optimisation as standard.
In our own scoping, we have stopped pricing SEO purely against projected clicks. The brief now includes the citation layer as a deliverable with its own targets: how many target queries the client appears in across AI surfaces, and how many of those appearances convert into the higher-value AI-referred visits. The click projection still matters. It is simply no longer the whole forecast.
For more context on evaluating whether in-house, agency or AI platform delivery is the right fit, we covered that framework in our analysis of in-house SEO vs agency vs AI platform for Australian small business.
How to Report AI Search Impact Honestly
If you are an agency, an in-house marketer or a small business owner reviewing your own data, here is what honest reporting looks like in 2026:
Show the click trend and the impression trend on the same chart. Let the divergence speak for itself. Do not hide it.
Segment by AI Overview presence. Separate queries where AI Overviews appear from those where they do not. The click decline is concentrated on AIO queries. Non-AIO queries may still be performing well.
Report citation appearances. How many of your target queries show your business in the AI answer? This is the new metric that most agencies are not tracking yet.
Connect clicks to revenue. Fewer clicks does not automatically mean less revenue, if the clicks that come through are higher quality. Show the conversion data alongside the traffic data.
Be explicit about what you can and cannot control. You cannot control whether Google shows an AI Overview for a query. You can control whether your content is structured, cited and reviewed in ways that increase the probability of being cited in that answer.
The agencies that survive the zero-click economy will be the ones that report honestly, adapt their strategy, and prove their value through commercial outcomes, not vanity traffic numbers.
This is not a theoretical concern for Australian businesses. Melbourne alone has hundreds of agencies offering SEO services, and the vast majority still report using the same metrics they used in 2022: keyword rankings, organic traffic, and month-on-month percentage changes. Those metrics are not wrong. They are incomplete. And in an economy where the majority of searches end without a click, presenting an incomplete picture is functionally misleading.
The test we offer agencies is simple. Open your last client report and count how many of the charts mention AI Overviews, AI Mode or citation appearances. If the answer is none, the report is describing 2022. The tools to measure the new surface exist. The habit of reporting on it is the gap.
At 21 Webs, we made the decision to include AI visibility tracking and citation reporting in every client engagement, not as an upsell but as a baseline. Because if we do not show clients where their business appears (or does not appear) in AI answers, we are reporting on half the landscape and calling it the whole picture.
For a deeper look at the AI tools worth paying for to help with measurement and visibility tracking, we published a companion guide.
Important FAQs
Are AI Overviews killing organic traffic?
They are reducing it meaningfully on queries where they appear. The first randomised field experiment (published April 2026) found a 39.8 per cent reduction in organic clicks where AI Overviews are shown, with zero-click searches rising from 54 per cent to 73 per cent. Organic traffic is not dead, but its volume on AI Overview queries is roughly 40 per cent lower than it would be without the feature.
Why are my impressions up but clicks down?
Because Google is showing your pages in more contexts (including AI Overview source panels), which increases impressions, while the AI answer absorbs the click that would have gone to your site. The divergence is structural, not a performance failure. It requires a measurement framework that tracks citation exposure alongside click-through rate.
What is the zero-click economy?
The zero-click economy describes a search landscape where the majority of queries are resolved on the search results page itself, without the user clicking through to any website. In the US, 68 per cent of Google searches now end without a click. For queries with AI Overviews, that figure rises to approximately 83 per cent.
How do I report AI search impact honestly?
Show the click-impression divergence clearly. Segment by AI Overview presence. Track citation appearances across AI surfaces. Connect clicks to revenue, not just volume. And be explicit about what you can control (citation signals, content quality, entity consistency) versus what you cannot (whether Google shows an AI Overview for a given query).
The Bottom Line
The ranking is doing its job. The click is not arriving.
The organic clicks that AI Overviews remove are not junk traffic. They are the same quality of visit you would have received without the overview, and the volume is simply being absorbed by Google’s answer layer. A top-three ranking no longer guarantees the click, but it still delivers brand exposure, AI citation visibility and higher-value conversion when a click does arrive. The agencies that survive the zero-click economy will be the ones that report honestly, adapt their strategy, and prove their value through commercial outcomes, not vanity traffic numbers.
Ready to measure what your rankings are actually worth now?
If AI Overviews have changed the value of an organic click, your SEO reporting should reflect it. We include AI visibility tracking and citation reporting in every client engagement, not as an upsell but as a baseline. Talk to our team about what that looks like for your account, or get in touch to review your latest report.
Sources
[1] Google (blog.google), I/O 2025 and 2026 announcements: AI Overviews reach over 2 billion monthly users globally. https://blog.google/
[2] Gartner, “Gartner Predicts Search Engine Volume Will Drop 25% by 2026 Due to AI Chatbots and Other Virtual Agents” (February 2024). https://www.gartner.com/en/newsroom/press-releases/2024-02-19-gartner-predicts-search-engine-volume-will-drop-25-percent-by-2026-due-to-ai-chatbots-and-other-virtual-agents
