Google Ads AI Max September 2026: What Changes Now and Why DSA Waits Until 2027
Abhishek Dwivedi
Team Lead, SEO
The September 2026 AI Max transition is not one deadline for every legacy Search setting. Google’s original announcement describes September upgrades for automatically created assets and campaign-level broad match, while its later dated update postpones automatic Dynamic Search Ads migration to February 2027. Start by checking each campaign’s settings and the notice shown in its account.
Which deadline applies?
The original Google announcement describes September upgrades for legacy Search settings. Google’s 11 June developer update subsequently postpones DSA automatic migration to February 2027. Use the newer DSA date and retain account-specific notices. Inventory automatically created assets, campaign-level broad match and dynamic ad groups separately. Recheck current instructions before changing a campaign.
What is AI Max?
Google describes AI Max as an optimization layer within Search campaigns rather than a separate campaign type. Its setup documentation explains activation and the DSA upgrade workflow. In that workflow, dynamic ad groups convert to standard groups and Dynamic Search Ads become Responsive Search Ads. Review the confirmation screen for the actual campaign before proceeding.
Audit conversion quality first
List primary and secondary conversions and the business reason for each. Check duplicated events, test submissions, irrelevant enquiries and purchases later cancelled or returned. More recorded conversions can coexist with fewer valuable customers if the target event is too easy or inaccurate. For leads, compare qualified leads and accepted opportunities. For ecommerce, compare net sales and contribution after returns. Establish limits with our break-even CAC and ROAS framework.
Review destinations and generated claims
Prepare an approved destination list. Identify pages that should not receive acquisition traffic, including obsolete offers and unsupported service regions. Check forms, checkout, tracking parameters and mobile usability. Record URL restrictions before migration. Review generated text for current pricing, availability and claims, and assign an owner to correct inaccurate assets. Our D2C landing-page audit can guide the destination review.
Design a controlled test
Write the decision rule before launch: what would justify expanding, holding or stopping the test? Preserve a baseline covering the normal conversion cycle. Where supported, use a suitable experiment to reduce the ambiguity of comparing unrelated periods. An illustrative lead-generation test might measure cost per qualified lead, opportunity acceptance and irrelevant enquiry share. Set thresholds from your economics; these are example measures, not universal benchmarks. Avoid changing bidding, creative, pages and conversion definitions simultaneously if you need to identify the cause of a result.
A migration worksheet your team can use
For each campaign, record its owner, legacy setting, notification, applicable date, baseline window, conversion definition, budget ceiling, destinations, exclusions, asset reviewer and review date. Keep settings screenshots and a change log. Our full-funnel attribution guide connects campaign reporting to later business outcomes. For the wider media mix, see Meta Ads versus Google PMax. PMax and AI Max are different concepts.
Frequently asked questions
Are DSAs automatically migrating in September 2026? Google’s later dated update postpones DSA automatic migration to February 2027. Check current account notices before acting.
Does the delay remove September work? No. Inventory other legacy settings separately and review applicable upgrade notices.
Is AI Max the same as Performance Max? No. AI Max is described as a layer within Search campaigns. Do not interchange the product names.
Does migration guarantee better ROAS? No. Measure conversion quality, costs and business outcomes; platform averages do not predict an individual account’s result.
Prepare an accountable migration plan
Connect the correct deadline to a campaign owner, verified settings and an agreed measurement approach. Review Garage Collective’s Performance Marketing capability or bring your inventory and baseline to a free marketing planning discussion. Sources checked 16 September 2026. Recommendations and examples are editorial guidance, not reported client results. The AI-generated cover is not an official Google asset or product screenshot.
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Key Takeaways
- Separate September legacy-setting upgrades from the revised February 2027 DSA migration.
- Review conversion quality, destination controls and generated claims before changing campaigns.
- Judge tests using qualified business outcomes and a documented baseline.
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