What to audit before Google upgrades your Search campaigns to AI Max
Google force-migrates Search campaigns to AI Max in September 2026 with no opt-out. After the upgrade your conversions will likely rise while real revenue may not. Three audits to tell whether the AI is finding demand or just billing you for demand you already owned.
By Stacey Tallitsch | June 1, 2026
You do not run your own Google Ads. Someone does it for you — an agency, a contractor, a person on your team — and the arrangement has worked well enough that you stopped looking closely. Then a notification shows up, or your account manager mentions it in passing: your Search campaigns are being "upgraded" to something called AI Max. The framing is reassuring. More automation, better results, nothing for you to do.
What actually happened is that Google is converting the part of your advertising you could still inspect into a system that decides more on its own. Not maliciously. Just structurally, and in Google's interest before yours. The conversion is real, the timeline is fixed, and the default settings are not chosen by you. The question is whether you find that out now, while you can still set the terms, or in September, when the defaults set themselves.
What is actually changing, and when
AI Max for Search is not a new campaign type you opted into. It is an optimization layer that gets switched on inside your existing Search campaigns. Once on, it expands the queries your ads can match using Google's models rather than your keyword list, rewrites your ad text, and chooses landing pages from across your site. The pitch is that it finds demand your keywords were missing. Sometimes it does.
The part that matters for planning: this is not optional much longer. Per Search Engine Land's reporting on the change, Google is retiring Dynamic Search Ads and force-migrating campaigns that use Dynamic Search Ads, automatically created assets, or campaign-level broad match to AI Max in September 2026, with no opt-out and no way to create the old campaign types afterward. Between now and August, migration is voluntary, which means you keep control of the configuration. After that, the system migrates whatever is left using Google's defaults — wider matching, more AI involvement, more spend surface.
So the decision in front of you is not "do I want AI Max." That decision has been made for you. The decision is whether you walk in during the window where you still set the controls, or get walked in during the window where you do not.
The trap is in the report, not the technology
Here is the thing almost every founder gets wrong about a system like this. After the upgrade, your conversions will very likely go up. The dashboard will look better. And that number will tell you almost nothing about whether the AI is working.
AI Max expands into queries your keywords did not cover. A large share of that expansion lands on searches for your own brand, your own product names, and terms you already rank for organically. When someone searches your company name and clicks the ad instead of the organic result directly below it, Google records a conversion. It was going to be your customer anyway. You just paid Google to stand in front of a door that was already open, and the report credits the ad for the sale.
This is the same problem as a marketing dashboard that climbs while revenue stays flat. The platform measures activity it can see. It cannot measure the conversion that would have happened without it. So the in-platform number rises, your real incremental revenue does not, and the gap is invisible unless you go looking for it.
The discipline here is the same one I argued for before approving budget on any AI tool a vendor is selling you. You do not evaluate the tool on the output it reports about itself. You evaluate it on whether the business is measurably better off with it than without it. Google's reporting is the tool grading its own work.
Who AI Max is actually built for
Every automated system has a profile of operator it serves and a profile it quietly taxes. Naming both is the whole job here.
AI Max genuinely helps the advertiser with a thin, under-managed account: few keywords, no time to maintain negative lists, a wide catalog, and demand they were structurally missing because nobody had the hours to build the targeting. For that operator, keywordless expansion finds real new customers. It also, transparently, helps Google, which captures more of the query surface and more of your budget.
It does not help the operator who already has tight brand-term coverage, a strong organic presence, and a clean account. For that founder, the expansion mostly reharvests demand you already owned, bills you for it, and reports it as new performance. You are not the buyer the automation was designed to reward. You are the account it was designed to monetize. The tool is not dishonest about this. It simply does not volunteer it, and the default settings do not protect you from it.
The good news is that AI Max ships with more controls than its predecessor systems did. The bad news is that none of them are on by default, and the migration will not turn them on for you.
What to audit before September
Three moves, and you can direct all of them this week even if you never log into the account yourself. Hand this list to whoever runs your ads.
Turn on the match-source column and read it
The search terms report now includes a column that tells you whether each query came from your actual keywords or from Google's keywordless AI expansion. That single column is the audit. If most of your conversions are coming from expansion into branded and near-branded terms, the AI is reharvesting, not finding. If expansion is bringing in genuinely new non-brand queries that convert, it is doing the job. You cannot know which without looking, and the column is where it lives.
Exclude your own brand
AI Max supports brand and URL exclusions at the campaign level. Add your own brand terms to the exclusion list so the system cannot bill you for traffic that was already going to find you. Keep your branded search in a separate, higher-priority campaign you control. This one setting separates "the AI found me a new customer" from "the AI charged me for an existing one," which is the entire question.
Run a holdout before you trust the number
Use a Google Ads experiment to run the campaign with AI Max on against a version with it off, for at least 4 weeks, and compare total incremental conversions — not the conversions the platform attributes to itself. If incremental volume rises, AI Max is earning its budget. If total conversions are flat while the AI's reported conversions climb, you have found cannibalization, and you have found it on your terms instead of discovering it in a flat quarter you cannot explain. This is the same instinct as diagnosing a channel whose behavior changed: isolate the variable, measure against a baseline, do not trust the surface number.
What to do before you close this tab
Send three sentences to whoever manages your Google Ads today. One: turn on the search-terms match-source column and send me a screenshot this week. Two: add our brand to the AI Max exclusion list and confirm our branded search sits in its own campaign. Three: set up a 4-week experiment comparing AI Max on against off before any forced migration.
You are not deciding whether to adopt AI Max. You are deciding whether you migrate in the window where the controls are yours, or get migrated in the window where they are Google's. The system is coming either way. The only variable you still own is whether you walk in able to tell the difference between demand it found and demand it billed you for.
— Stacey Tallitsch, Stronghold CMO
About the Author
Stacey Tallitsch is the President of Stronghold CMO, a Fractional AI CMO service operating under Talisman Capital, Inc. He is a 30-year tech veteran and the author of 21 books on systems thinking, operator-grade decision-making, and personal sovereignty, with more than 30,000 students across his Udemy course catalog.
- LinkedIn: https://www.linkedin.com/in/stacey-tallitsch-729b6336a/
- Books on Amazon: https://www.amazon.com/s?i=stripbooks&rh=p_27%3AStacey%2BTallitsch&s=relevancerank&text=Stacey+Tallitsch&ref=dp_byline_sr_book_1
- Courses on Udemy: https://www.udemy.com/user/staceytallitsch/
Quick reference
Should I let Google upgrade my Search campaigns to AI Max? You do not have a choice about the upgrade itself — Google force-migrates Dynamic Search Ads, automatically created assets, and campaign-level broad match to AI Max in September 2026 with no opt-out. You do have a choice about whether you migrate during the voluntary window first and set the controls, or let Google's defaults configure it for you.
How do I tell if AI Max is actually working? Ignore the conversion count the platform reports about itself and measure incrementality instead. Run a 4-week experiment with AI Max on versus off and check whether total conversions actually rise; if they are flat while the AI's reported conversions climb, it is reharvesting demand you already owned.
What is the single biggest risk when Google's AI takes over my campaigns? Brand cannibalization — the AI expands into searches for your own brand and terms you already rank for, bills you for that traffic, and reports it as new performance. Exclude your own brand at the campaign level and keep branded search in a separate campaign you control.