If your account relies on the Google Display Network (GDN), you need to act before February 2027 or you may see a material shift in where your ad spend lands. Google Ads is introducing channel prioritization and per-channel budget allocation to let advertisers fund core channels first and cap spend on secondary inventory — and it explicitly warns that the old GDN spend allocation setup will be removed in February 2027.
What the new controls do
Channel prioritization lets advertisers tag inventory at the account or campaign level as “High priority” or “Low priority.” When priorities are set, Google will aim to fund high-priority channels first, then allocate remaining budget to lower-priority channels — subject to campaign objectives such as Target CPA or Target ROAS.
Budget allocation adds a hard cap for lower-priority channels: you can specify a maximum percentage of the daily budget that low-priority inventory may consume. Google says it will make a best-effort attempt to keep spend inside that percentage.
Both controls apply across Search, Shopping, Performance Max and Demand Gen campaigns, and they work with shared budgets too.
How this changes campaign setups
Rather than the all-or-nothing opt-outs advertisers often use, these settings let you prioritize and test networks without disabling them. For Search campaigns you can now separate Google Search, Search partners and the Google Display Network into different priority tiers. In Performance Max and Demand Gen, Google groups Search, YouTube, Maps, Gmail and Discover together as “Google channels” for prioritization.
Note: channel prioritization by itself may not change outcomes for campaigns using Target CPA or Target ROAS if they are not budget-constrained. In those cases, the budget-allocation cap provides a direct control to limit spend on low-priority channels.
Rollout and the February 2027 deadline
Google will roll these optional controls out globally across the affected campaign types over the coming months. Critically, starting in February 2027 the existing spend allocation behavior for Search campaigns with GDN enabled will be removed. Google warns this change could shift how budgets are distributed unless advertisers set explicit priorities and caps.
If you want to preserve current spend patterns after that change, set the Google Display Network to “Low priority” and apply a 50% budget allocation before the February 2027 deadline.
What marketers should do now
1) Audit accounts for GDN and Search-partner usage. Identify campaigns that currently rely on the old allocation behavior.
2) When the controls appear in your interface, set clear priorities: mark mission-critical channels as High priority to secure spend, and mark experimental or lower-performing channels as Low priority.
3) Apply conservative percentage caps on low-priority channels to test them safely. Start small, measure results, then adjust.
4) Watch how caps interact with automated bidding. Because Google will allocate remaining budget on a best-effort basis, caps can affect how automated strategies spend and which conversions they pursue.
What to monitor
After enabling prioritization and caps, track spend distribution, cost per conversion and conversion volume by channel. Expect some variation while the system stabilizes; use short A/B tests where possible to isolate the impact of prioritization versus other changes.
Finally, treat February 2027 as a hard operational deadline: if you want the pre-change spend behavior preserved, set GDN to Low priority and cap it at 50% now rather than assuming legacy behavior will continue.
What to watch next: monitor reporting for shifts in spend and conversions, test small allocation caps before broader rollout, and follow Google’s Help Center guidance as the controls reach your account.
