Google Auto-Upgrades Broad Match and Auto-Created Assets to AI Max on Sept 1: A D2C Checklist

There's a date on your calendar you might not have marked: September 1. That's when Google starts flipping certain Search campaigns over to AI Max on its own — no confirmation email, no button for you to press first. If your campaigns use campaign-level broad match or standalone automatically created assets, they're in the queue, and the change rolls out gradually across the month. Google calls it an in-place migration to "equivalent AI Max settings," which is a tidy way of saying it's happening to those campaigns whether you've prepared or not.

Treat this less like news and more like a maintenance window you didn't schedule. For a lean D2C account, an unprepared switch can start paying for the wrong searches within days, because AI Max widens where your ads match and hands Google the pen on your headlines and descriptions. Prepared, it's a genuine efficiency gain. So this is a working checklist, not an explainer — what auto-migrates, what's on a later clock, and the specific settings to lock down before the upgrade reaches your account. The timeline here comes from Google's own announcements and Search Engine Land's reporting.

What's changing on September 1

The scope is narrower than the panic suggests, which is good news if you read it early. Google is not converting every Search campaign at once. It's targeting two specific legacy features, and only campaigns that use them are in this wave.

The two features that auto-upgrade

The first is campaign-level broad match — the toggle that made an entire campaign's keywords match broadly. The second is standalone automatically created assets, or ACA, the setting that let Google generate headlines and descriptions on your behalf. From Sept 1, 2026, campaigns leaning on either get pulled into AI Max, migrated in place to what Google calls equivalent settings, gradually through the month. If your campaigns use neither, this particular wave doesn't touch them — but check, because plenty of accounts turned on ACA years ago and forgot.

What's on a different timeline

Dynamic Search Ads get more runway. Google says it'll warn advertisers about the DSA transition through in-account notifications from September, remind them again in January 2027, and begin the automatic DSA upgrade to AI Max in February 2027. One more date matters: since Aug 3, 2026, you can no longer create new campaign-level broad match or legacy ACA campaigns through any channel. The old way isn't just being phased out — it's already closed to new builds.

What AI Max actually does

AI Max is Google's attempt to fold broad matching, asset generation and its AI query-hunting into one Search bundle. In plain terms, it widens the net of searches your ads can show for — reaching intent your exact keywords would miss — and it can write, test and swap headlines and descriptions to fit each query. The pitch is more converting traffic with less manual keyword work. The catch is that "wider" cuts both ways: without controls, wider also means more irrelevant matches and more clicks you didn't want to buy.

Before and after the upgrade

The change is less about a new dashboard and more about who's steering. The table shows the shift in plain terms.

Your pre-upgrade checklist

Here's the practical work, and none of it takes long. Do it before the migration reaches your account, not after you notice odd spend.

Set your brand and URL controls

AI Max has brand inclusion and exclusion lists — use them to decide whether it chases brand searches and to keep it away from competitor or off-brand terms you don't want. Just as important, set the final-URL expansion controls so Google can only send traffic to the landing pages you approve. An unrestricted account can start routing shoppers to the wrong product or a thin page, quietly hurting conversion rate.

Fix your conversion signal

Wider matching only pays off if Google optimises against clean data. Make sure your purchase and add-to-cart conversions are tracked accurately, ideally with server-side enhanced conversions from your Shopify backend, deduplicated and complete. Feed AI Max a blurry signal and it'll optimise toward the wrong outcomes with more reach than before. Getting this measurement layer right is a core part of how our performance marketing team runs Google Ads for D2C brands.

Watch search terms for the first two weeks

For the fortnight after the switch, live in your search terms report. AI Max will surface new queries — some gold, some junk. Add negatives aggressively for the junk, and note the winners you'd never have bid on manually. This early pruning is what turns a wider net into a profitable one instead of a leaky one.

What this means for your budget and margins

Be clear-eyed about the economics. AI Max is an acquisition-efficiency tool, not a profitability tool. It can find you more converting searches, but it has no idea whether those conversions make you money. If your contribution margin is thin or your target CPA is set on flattering last-click numbers, a system that spends more efficiently on a losing product simply loses money faster and with more confidence. Judge the change on blended, new-customer economics over a few weeks — not on the in-platform ROAS that AI Max will happily make look good.

Getting ahead of the switch

The plan is short. Check which of your Search campaigns use campaign-level broad match or ACA, so you know what's in the September wave. Configure your AI Max brand controls and URL controls before the migration lands. Tighten your conversion tracking so the system optimises against reality. Then guard the first two weeks with a hard look at search terms and a quick negative-keyword habit. Your Dynamic Search Ads have until February 2027, so use one smaller campaign to learn AI Max's behaviour now rather than meeting it cold later.

None of this is hard — it's just time-sensitive, and the window is short. Before Monday, open your Search campaigns and flag any using campaign-level broad match or auto-created assets, set your AI Max brand and URL controls, confirm your purchase and add-to-cart tracking is clean, and put an hour aside for search-terms pruning in the first fortnight after the switch. Do that and AI Max lands as a lever you point rather than a change that happens to you. Your Dynamic Search Ads have until February, so use one small campaign to get comfortable with how it behaves while the stakes are low.

Sources: Search Engine Land, "Google sets AI Max migration timeline for Search campaigns" (August 2026), reporting that from Sept 1–30, 2026 Google auto-upgrades Search campaigns using campaign-level broad match or standalone automatically created assets to AI Max, that DSA migration begins February 2027 with in-account warnings from September and reminders in January, and that as of Aug 3, 2026 new campaign-level broad match and legacy ACA campaigns can no longer be created; Google Ads Help and the Google Ads blog on AI Max. Control-configuration, conversion-signal and negative-keyword recommendations are Digistex4u's applied guidance, not statements attributed to Google.