Google Moved Your Search Ads to AI Max: What Small Businesses Should Check Now

If you run Google Search ads, there is a good chance your campaigns changed last month without you touching them.

Through September 2026, Google automatically upgraded Search campaigns that used two older settings, campaign-level broad match and automatically created assets, to AI Max for Search. Since 3 August, advertisers can no longer create new campaigns with those older settings, and Dynamic Search Ads are scheduled to move to AI Max in February 2027 (Search Engine Land). Google says campaigns are migrated in place with equivalent settings to minimise disruption.

For a large advertiser with an agency watching the account daily, this is routine. For a small business spending a modest monthly budget, it deserves an hour this week.

What AI Max actually does

AI Max is a set of AI features layered on top of a normal Search campaign (Google Ads Help). Depending on which old setting your campaign used, the upgrade can switch on:

• Search term matching. Your ads can show for searches beyond your keyword list, based on your landing pages and ads.
• Text customisation. Google writes extra headline and description variations from your website and existing ads.
• Final URL expansion. Google can send people to the page on your site it thinks fits the search best, instead of the page you chose.

Campaigns that used campaign-level broad match mainly gain search term matching. Campaigns that used automatically created assets gain search term matching and text customisation, and may gain URL expansion (Common Thread Collective).

Why small budgets should pay attention

More reach is good when there is money to spare. With a tight budget, three risks matter:

Your ads can show for loosely related searches. A consultancy that sells HubSpot setup can end up paying for clicks from people looking for free HubSpot tutorials.

Google may write the words. Generated headlines draw on your website. If the site is vague or out of date, the ads will be too. If you are in a regulated industry, check every claim.

Visitors may land on the wrong page. URL expansion might send a buyer to a blog post or a careers page instead of your offer, where they are less likely to enquire.

None of these are reasons to panic. They are reasons to look.

A six-point checklist for this week

1. Find out which campaigns changed. Open Google Ads and look for campaigns now marked as using AI Max, and for the notification Google sent about the upgrade.
2. Read the search terms report. Look at the actual searches that triggered your ads in the last two weeks. Add negative keywords for anything irrelevant, such as "free", "jobs", "course", or competitors' support queries.
3. Review the generated text. Check the headlines and descriptions Google created. Remove anything inaccurate, off-brand, or that promises what you do not offer.
4. Decide on URL expansion. If you have a few strong landing pages, consider limiting where Google can send people, or excluding pages like your blog and careers section.
5. Check conversion tracking. AI Max optimises towards whatever you count as a conversion. If a form submission is not tracked correctly, it will learn from the wrong signal. Submit your own form and confirm it is recorded.
6. Compare cost per lead, not clicks. Note your cost per enquiry for the four weeks before the switch and track it for the four weeks after. That is the only number that tells you whether the change helped.

The bigger lesson

Every major ad platform is moving the same way: fewer manual controls, more AI deciding who sees what. The advertisers who do well in that world have three things in order: a clear offer, landing pages that match what buyers search for, and accurate conversion data. The AI can only work with what you give it.

If your landing pages are not ready, start with our checklist of what a B2B website needs before you run ads. To check how your pages look in search, try the free Google result preview, and use the UTM link builder to track which campaigns bring enquiries.

If you would like someone to review the account with you, our managed marketing team runs search campaigns for small businesses, or you can start with a fixed-price growth audit.