---
title: Your Google Ads Account Auto-Upgrades to AI Max on September 1. Here Is What Actually Changes.
description: Google auto-upgrades every Search campaign running automatically created assets or campaign-level broad match into AI Max on September 1. For one of those two groups, it is a targeting change, not a rebrand.
author: LETSGROW Dev Team
date: 2026-08-12
category: AI Tools
tags: ["Google Ads", "AI Max", "Paid Search", "Marketing Automation", "PPC"]
url: "https://letsgrow.dev/blog/google-ads-ai-max-auto-upgrade-september-2026"
---
On September 1, Google automatically upgrades every Search campaign still running automatically created assets or the campaign-level broad match setting into AI Max. Google is framing this as a consolidation, a tidy move of two legacy settings into one interface. For half of the accounts affected, that framing is wrong. It is a targeting change wearing a maintenance update's clothing, and it lands in three weeks whether marketing teams vote on it or not.

Google confirmed the date by email on August 5, after quietly extending the related Dynamic Search Ads migration to February 2027 back in June. That extension created a false sense that the whole timeline had slipped. It did not. Automatically created assets and campaign-level broad match are still on the original September 1 clock, and the accounts that assumed otherwise are the ones about to get surprised.

## What Actually Changes on September 1

Google is splitting the affected population into two groups and handing each a different default configuration.

Campaigns using automatically created assets, now called text customization, get upgraded with search term matching and text customization both switched on. Campaigns using the campaign-level broad match setting get search term matching only, with text customization and final URL expansion left off.

Google describes both outcomes as mirroring the legacy setup to protect performance stability. That description holds for the broad match cohort. It does not hold for the other one.

::compare-table[title="What Each Cohort Inherits on September 1"]
| Setting | Automatically Created Assets cohort | Campaign-Level Broad Match cohort |
|---|---|---|
| Search term matching | Enabled by default | Enabled by default |
| Text customization | Enabled by default | Off |
| Final URL expansion | Off until enabled manually | Off |
| What actually changes | Query eligibility expands, a capability ACA never had on its own | Existing keywords convert to broad match inside an AI Max wrapper |
::

## The Sleeper Change Nobody Voted On

Automatically created assets has only ever governed creative generation. It wrote headlines and descriptions from landing page content. It never touched which search queries an ad could match to. Search term matching does exactly that, and starting September 1 it ships bundled with every account that opted into automated headline writing.

That is not a rebrand. It is query expansion arriving as a rider on a creative feature, activated by default, on a deadline most teams associate with a different product entirely. Turn it off at the ad group level if you have not reviewed it, because leaving it on by omission is not the same decision as leaving it on deliberately.

The broad match cohort has a cleaner story. Enabling that setting already converted every keyword to broad match and forced new keywords into broad match too. AI Max just becomes the interface where that setting now lives. Pinned assets in responsive search ads still hold under this path, which matters if compliance language depends on a fixed position.

## Why "Average" Is Carrying the Whole Argument

Google's headline number for the full AI Max feature suite is 7% more conversions or conversion value at a similar CPA or ROAS, measured against search term matching alone. That figure already dropped from the 14% claim Google published at the open beta launch in May 2025. A number that gets cut in half between beta and general availability is not a number to plan a budget around without your own test.

Independent measurement has been rougher than either figure. One agency reported 99% of AI Max impressions producing zero conversions across roughly 30,000 search terms in client accounts. A separate analysis of more than 250 retail campaigns found AI Max converting at roughly 35% lower ROAS than traditional match types. Expansion onto Search Partner Network placements has been tied to ROAS running 37% below Google Search proper. Google has since clarified that search term matching reports on inferred intent rather than literal query text, which explains some of the reporting confusion but not the performance gap.

None of this means AI Max is a bad product. It means the internal average masks account-level variance wide enough that the only responsible move is testing your own accounts before the deadline decides for you.

## What to Do Before September 1

Waiting is a choice, and it is the worst one available, because it hands Google's default configuration to every account that never reviewed the setting in the first place.

::checklist[title="Before the September 1 Auto-Upgrade"]
- Pull every Search campaign currently running text customization (formerly ACA) or the campaign-level broad match setting
- For text customization campaigns, decide deliberately whether search term matching should be on. Do not let the default decide for you
- Check budget caps. AI Max underperforms on budget-limited campaigns, and search term matching widens the eligible query pool without widening the budget funding it
- If you plan to enable final URL expansion later, audit tracking templates now. Static tracking URLs without a proper lpurl tag pattern can misroute traffic or throw 404s
- Set branded search controls and text guidelines before the auto-upgrade runs, not after
- Use Google's one-click experiments to test AI Max against your current setup on your own traffic, not on Google's published average
- Segment October reporting by the new AI Max match type and source columns so a mid-quarter migration does not corrupt your quarter-over-quarter comparison
::

## The Bigger Pattern

This migration is not really about two legacy settings. Google confirmed at Marketing Live in May that reaching its newer AI search ad formats, including Conversational Discovery ads and Highlighted Answers, requires running AI Max or Performance Max with text customization. Legacy Search configurations cannot reach those placements at all. Microsoft made the equivalent move in July, folding its own keyword expansion feature into an AI Max product of its own.

The distribution layer is consolidating around automated matching whether the performance data fully supports it yet or not. Teams that treat September 1 as a paperwork update will get the default. Teams that treat it as the targeting decision it actually is will still have three weeks to make that decision on their own terms.