TL;DR Summary:
Measurement Gets Smarter: Google Ads API v26 adds Search Lift access with 15 new metrics, letting automated dashboards measure incremental search activity without manual interface checks.Performance Max Expands: Developers can create Local Services Performance Max campaigns with lead, coupon, and message conversion support, but the campaign type must be locked in at launch.Campaign Controls Grow: New features simplify enhanced conversions, political advertising requirements, travel bidding, Shopping listings, and Demand Gen budget planning across currencies.Updates Arrive Faster: Google is shifting to twice-monthly API releases, so teams must upgrade client libraries and monitor release notes more closely to avoid falling behind.What does Google Ads API v26 actually change for your campaigns? Google released version 26 of the Google Ads API on October 15, 2026, adding new measurement tools, expanded Performance Max support and several campaign management updates. If you manage Google Ads through code or automated tools, this release matters now because it also marks the start of a faster, twice-monthly update schedule.
Search Lift measurement arrives in Google Ads API v26
Google Ads API v26 gives you access to Search Lift studies directly through the API. This includes 15 new metrics covering incremental searches, relative search lift and impressions. Search Lift measures how much your ads increase search activity compared to what would happen without them. If you build reporting tools or dashboards, you can now pull this data programmatically instead of checking it manually inside the Google Ads interface.
Local Services Performance Max gets new API support
Developers can now create Local Services Performance Max campaigns through the API using Google Business Profile information. Google has added support for campaign lead associations, coupon lead types and message lead conversions. One detail matters here: you must set the Local Services Performance Max setting when you create the campaign. You cannot change it afterward. Plan your campaign structure carefully before you launch, since this setting locks in from the start.
Political advertising and conversion settings simplified in this update
If your campaigns and eligible Demand Gen ad groups target only locations outside the European Union, you may no longer need to submit a political advertising declaration. This applies only if you meet Google’s criteria, which Google has not fully detailed in this release. Separately, Google Ads API v26 adds a new account-level setting that gives you one unified place to manage enhanced conversions configuration, instead of handling it at the campaign or tag level. As Search Lift reporting and unified enhanced conversions settings add more moving pieces to track, a platform like Measuremate becomes useful for keeping conversion tagging and measurement configurations consistent across accounts, rather than reconciling these new settings by hand each time Google ships an update.
Travel and Shopping campaign controls expand under v26
Google has standardized several hotel-specific bid modifier fields so you can use them across travel verticals, not just hotels. Shopping campaigns now support expanded listing types. Demand Gen campaigns gain new minimum daily budget information based on currency, which helps you set realistic budgets when you run campaigns in multiple countries.
Google Ads API now moves to a twice-monthly release cycle
Starting with version 26, Google will release Google Ads API updates twice each month instead of the previous slower pace. Google plans to publish release announcements and live walkthroughs twice per quarter, while individual updates will appear in the API release notes as they roll out. Google hosted a live walkthrough of v26 at 10 a.m. ET through its developer Discord community and Ads Developers YouTube channel, with a recording available afterward for anyone who missed it. To use any v26 feature, you need to upgrade your Google Ads API client libraries and update your code first.
Check your Google Ads API client library version now and plan your upgrade before you try to use any v26 feature. Pay close attention to the Local Services Performance Max setting, since you cannot change it once you create the campaign. Watch the release notes closely going forward, since Google’s new twice-monthly schedule means changes will arrive faster than before. As Google Ads API v26 expands measurement options like Search Lift and unified enhanced conversions, tools like Measuremate can help teams keep GA4, GTM, and BigQuery tracking aligned with these new reporting capabilities instead of managing tagging updates manually.
