Google is auto-upgrading Search campaigns using broad match and automatically created assets to AI Max in September 2026. Here is what changes, what risks it creates for service businesses, and what to do this week.
Ido Cohen · Published 2026-09-01 · Paid Advertising
Google is auto-upgrading your Search campaigns to AI Max right now — and if you run Google Ads for a plumbing company, dental practice, law firm, HVAC business, or any other local service, your account may already look different than it did last week.
Starting September 2026, Google confirmed it will automatically migrate any Search campaign still using the campaign-level broad match setting or automatically created assets (ACA) — the feature formerly known as ACA that rewrites your ad copy — over to AI Max for Search campaigns. You cannot opt out of the migration. You can only control whether it happens on your terms or Google's.
Here is the full picture: what AI Max actually is, what changes in your account, where the real risks are for service businesses, and what to do before the month is out.
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AI Max for Search campaigns is not a new campaign type — it is an AI-powered optimization layer that Google activates on top of your existing Search campaigns. Think of it as three levers Google is pulling simultaneously on your behalf: how it matches your ads to searches, what your ad copy says, and which page on your site users land on.
According to Google's official announcement, AI Max officially exited beta in April 2026 after 11 months of open testing, with hundreds of thousands of global advertisers already running it. The three core features are:
Google's internal 2026 data for non-retail advertisers shows that advertisers using the full AI Max feature suite — search term matching, text customization, and final URL expansion — saw an average of 7% more conversions or conversion value at a similar CPA or ROAS compared to using search term matching alone. That is a real number, but it comes with caveats that matter for service businesses. More on that below.
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This is where the coverage gets confusing, and getting it wrong is expensive. There are actually two different migration timelines running in parallel.
What IS auto-upgrading in September 2026:
What got a reprieve until February 2027:
As the lead-gen-focused analysis site leadgen-economy.com noted, the configuration that defines most lead-gen paid search in 2026 — broad match campaigns with auto-created assets — is exactly what auto-upgrades on the original schedule. The DSA extension is a footnote for the minority of accounts still running Dynamic Search Ads as a primary campaign type.
You also will no longer be able to create new DSA campaigns through the Google Ads interface, Google Ads Editor, or the Google Ads API starting this month. That door is closed.
Bottom line: if you are not sure whether your campaigns are affected, log into Google Ads today, navigate to each Search campaign's settings, and look for the campaign-level broad match toggle or the automatically created assets setting. According to fabianca.com's breakdown of the Google announcement, if either setting is active, that campaign is already in the upgrade queue.
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A 7% conversion lift sounds compelling. But there is a critical difference between a service business and an online retailer that the headline number does not capture: you are selling appointments and phone calls, not products with SKUs.
Here is where AI Max creates specific friction for local service businesses:
1. Search term matching casts a wider net — including queries you do not want.
A roofing contractor in Denver does not want to pay for clicks from someone in Colorado Springs, or from someone Googling "how to fix a roof myself." AI Max's keywordless matching is optimized to find intent, but "intent" in a service context is highly geography-dependent and job-type-dependent. Without a disciplined negative keyword list established before the upgrade, your budget will absorb irrelevant traffic during the system's learning period.
2. Text customization rewrites your ad copy — and your copy is your compliance.
For lawyers, financial advisors, med spas, dentists, and any business in a regulated category, ad copy is not just marketing. It is a compliance document. Google's AI Max introduced text disclaimers — a feature specifically added so that regulated advertisers can guarantee required legal text appears even when final URL expansion is active. But this feature requires you to set it up proactively. The auto-upgrade does not configure your disclaimers for you.
3. Final URL expansion can send traffic to pages that do not convert.
If your site has a blog, an FAQ section, or service pages that have not been optimized for lead capture, AI Max may route ad traffic there because those pages match the query. A dental practice with a blog post about "what to expect during a root canal" might find that AI Max sends paid traffic to that post instead of the "Book an Appointment" page — because the query matched the content, not the commercial intent.
4. The learning period burns budget.
When AI Max first activates, the system needs time to accumulate data on what converts in your specific account. According to practitioners who analyzed the beta, the first two to four weeks post-upgrade are the highest-risk period for wasted spend. Agencies managing accounts that did not prepare report seeing CPLs (cost per lead) spike before the system calibrates.
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This is not all bad news. AI Max solves real problems that service businesses have struggled with in traditional Search campaigns.
Long-tail emergency queries are hard to keyword-map manually.
A plumber cannot pre-write ad groups for every possible emergency search: "water heater making gurgling noise," "pipes frozen under kitchen," "sewage smell from drain at night." AI Max's search term matching can catch this long-tail demand automatically. As one agency breakdown described it, the system might match "water heater making noise at 2am" to your emergency repair page — not because you keyword-mapped it, but because the AI read the intent.
Conversational search is growing. Queries on Google Search are getting longer and more natural-language as users migrate habits from ChatGPT and Gemini. Keyword-based campaigns are structurally worse at capturing this demand than intent-based matching. AI Max is architecturally aligned with where search behavior is heading.
Reporting transparency is better than Performance Max.
One legitimate criticism of Performance Max campaigns has been the black-box problem: you cannot see what searches you showed up for. AI Max preserves the search terms report, so you can see exactly which queries triggered your ads, whether via broad match expansion or keywordless matching. That transparency is a meaningful operational advantage.
The upgrade is reversible at the feature level.
Search term matching can be toggled off at the ad group level after AI Max is activated. Text customization and Final URL Expansion can also be disabled if you determine they are hurting lead quality. You have levers — you just need to know where to find them and what to watch.
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Based on how the beta played out across accounts, three factors predict outcomes:
The pattern is consistent: the more prepared your account and your website are, the more AI Max functions as an accelerant. The less prepared, the more it functions as a budget drain until the system figures out what you actually want.
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The auto-upgrade is happening whether you act or not. The only question is whether you manage it or Google does.
Here is a concrete seven-step action plan for service business owners and their marketing managers:
1. Audit your campaigns today. Log into Google Ads, go to each Search campaign's Settings tab, and check for the campaign-level broad match toggle and the automatically created assets (text customization) setting. If either is active, you are in the September upgrade queue.
2. Build your negative keyword list before the upgrade hits. Pull the last 90 days of your search terms report and add every irrelevant query as a negative keyword. Be especially aggressive on geographic terms (other cities or regions you do not serve), competitor names you want to exclude, DIY or informational intent queries ("how to," "what is," "free"), and job types outside your service area.
3. Audit your landing pages and add URL exclusions. Identify every page on your site that should NOT receive paid traffic — blog posts, About Us, careers, FAQ pages that lack a call-to-action or a contact form. Add these as URL exclusions in your AI Max settings so Final URL Expansion does not route paid clicks there.
4. Set up text disclaimers if you are in a regulated industry. Lawyers, financial advisors, healthcare providers, med spas — configure text disclaimers immediately. This guarantees required legal language appears in your ads even when AI Max is rewriting copy and expanding URLs. Do not leave this to default settings.
5. Set brand controls. Use brand inclusions to focus on your own branded terms, and brand exclusions to prevent your ads from showing alongside competitor brand names you do not want to be associated with.
6. Monitor the search terms report daily for the first four weeks. This is the highest-risk window. You are looking for irrelevant match patterns, high-spend searches with zero conversions, and geography outliers. Add negatives aggressively during this period.
7. Run a one-click experiment before going all-in. If you want to test AI Max against your current setup on a specific campaign before the full upgrade, Google offers a one-click experiment tool that lets you run a controlled split. Use it now, before the forced migration removes that choice.
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What exactly is being force-upgraded to AI Max in September 2026?
Google is automatically upgrading Search campaigns that use the campaign-level broad match setting and campaigns that have automatically created assets (ACA) enabled. Both will be migrated to AI Max with search term matching turned on by default. Campaigns using ACA will also have text customization enabled. Dynamic Search Ads campaigns specifically got a reprieve and will not be force-migrated until February 2027.
Can I opt out of the AI Max upgrade entirely?
No. Google is not offering a blanket opt-out for accounts that fall into the affected campaign configuration categories. What you can do is disable individual AI Max features — such as search term matching, text customization, or Final URL Expansion — at the campaign or ad group level after the upgrade. You retain control over which features are active, but the migration itself is mandatory.
Will AI Max make my Google Ads more expensive?
Not inherently. AI Max is designed to find more relevant queries at a similar CPA or ROAS to your existing campaigns, and Google's own data shows an average 7% lift in conversions. However, in the early learning period and in accounts without strong negative keyword lists, it can temporarily increase cost-per-lead as the system calibrates. Preparation — especially negative keywords and URL exclusions — is the primary lever that controls this risk.
What is the biggest risk for a local service business specifically?
The combination of keywordless search term matching and Final URL Expansion routing traffic to non-commercial pages. A plumber, HVAC company, or contractor typically has multiple service pages and possibly a blog. Without URL exclusions and negative keywords in place before the upgrade, AI Max can direct paid budget toward informational content or geographies outside the service area. Build your exclusion lists first.
Does AI Max replace keywords entirely?
No. AI Max works on top of your existing keyword structure, not instead of it. Your keywords remain active and continue to trigger ads as before. Search term matching is an additive layer — it allows AI to also bid on relevant queries beyond your keywords. You can disable search term matching at the ad group level if you want keyword-only targeting, while still benefiting from other AI Max features like text customization.
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