Google Ads API v26.1: Network Priority and Budget Caps
In short: Google's Ads API v26.1 (28 October 2026) lets integrations set high or low priority for Google-owned inventory, Search partners and the Display Network, and set a percentage cap on lower-priority network spend, at account and campaign level. The feature itself was announced on 14 October; the new part is API access. Eligibility varies and Google describes allocation as best-effort, so audit before changing budgets.
- The new part is API access. The network prioritization feature was announced on 14 October.
- Settings include high or low network priority and a percentage cap on secondary networks, with account defaults and campaign overrides.
- An eligibility field shows which campaigns can use it. Do not assume every campaign qualifies.
- Google calls allocation best-effort, so a cap does not guarantee an exact spend split.
What changed
Earlier in October Google announced network prioritization for campaigns. On 28 October its Ads API v26.1 release made the same controls available to software and agency tools. Supported integrations can assign Google-owned inventory, Search partners and the Display Network to priority tiers, and set a percentage cap on spend going to lower-priority networks. There are account-level defaults, campaign-budget overrides and an eligibility field. Our earlier explainer covers the feature itself: Google Ads channel prioritization explained.
Why it matters for agencies
If you manage many accounts, network settings can be changed by script instead of one campaign at a time. That makes channel testing more consistent: the same rule, applied the same way, with a record of what changed.
Limits to remember
- Eligibility varies. Check the eligibility field before planning anything around it.
- Caps are best-effort. Google's own guidance does not promise an exact split.
- API support is not a UI launch. Rollout in your account may differ.
What to audit first
- List which campaigns are eligible.
- Pull spend, conversions and CPA by network for the last 30 days.
- Decide whether Search partners or Display deserve any budget in each account, using your own data.
- Change one account at a time, note the date, and compare CPA and conversion quality afterwards.
A cap is a control, not a strategy. It only helps if your conversion tracking is clean, because the comparison depends on it. See our conversion audit checklist.
Want these checks run on your own accounts? Request a free account review or see our Google Ads management.
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Sources
- Google Ads API release notes · Google Developers
Facts in this article come from the sources above, checked on 30 October 2026. Platform features roll out in phases, so check your own account before acting. We update this page when official details change.