Google Ads Channel Prioritization and Budget Caps

On October 14, 2026, Google introduced two optional controls for splitting budget across channels: a priority level per channel and a spend cap for secondary channels. According to the Google Ads Help Center, they become available progressively starting October 15, 2026 in Search, Shopping, Performance Max and Demand Gen campaigns, and Google pitches them as a way to spend with more confidence heading into the holiday season. The all-or-nothing choice they replace is the one for Search partners and the Google Display Network, which you could keep on or opt out of, with nothing in between. Display Expansion on Search campaigns already had its own spend allocation, and that allocation is what goes away in February 2027, when those campaigns migrate to the new setup automatically.

One thing to know before the details: priority only moves spend when budget is what's holding the campaign back. In a Target CPA or Target ROAS campaign that isn't limited by budget, priority generally doesn't change how spend is distributed, and the control that does have an effect is the cap, which Google's announcement calls out as exactly where it's most useful.

A spending order and a ceiling per channel

Each channel is set to "High priority" or "Low priority", and Low priority channels can carry a cap expressed as a percentage of the campaign's average daily budget. You set it at the account, shared budget or campaign level, and every channel starts at High by default. Google spends on High priority channels first (within your target if you use Target CPA or Target ROAS) and then distributes what's left to Low priority channels. The channels depend on campaign type: Search gets Google Search, Search partners and the Google Display Network; Shopping gets Google Search and Search partners; Performance Max gets "Google channels", Search partners and Display; Demand Gen gets "Google channels" and Display. In Performance Max and Demand Gen, Search, YouTube, Maps, Gmail and Discover are prioritized together as "Google channels", while Search partners and Display each get their own level.

The Help Center's example sets the scale: a 5% allocation on a $1,000 average daily budget means Google aims to keep that channel at or below $50 per day. At 0%, Google won't spend on that channel. The percentage is calculated on the average daily budget, not on actual campaign spend, it resets every day with no carryover of unspent or overspent amounts, and on a shared budget it applies to the budget as a whole. Demand Gen supports priority but not the cap.

The cap is best-effort, and that defines what it's for. The Help Center says it isn't a guarantee and daily spend on that channel may exceed it, including on days when the campaign spends more than its average daily budget. It's a way to contain a channel, not a hard spending limit you can promise a finance team.

How each bid strategy responds

The Help Center breaks the behavior down by bid strategy, and the deciding variable is whether the campaign is limited by budget. It also lists Target CPC, which the announcement doesn't mention; this piece follows the Help Center.

Target CPA, Target ROAS or Target CPC, not limited by budget: Google aims for your target across all channels and priority doesn't change the split. Caps on Low priority channels still apply.
The same strategies, limited by budget: High priority channels spend first, within your target. If more spend on High priority channels would push past your target, budget shifts to Low priority channels when they can convert at your target, always subject to the cap.
Maximize Conversions, Maximize Conversion Value, Maximize Clicks, Manual CPC and Target Impression Share: High priority channels spend first, and whatever can't be spent there goes to Low priority channels.

February 2027: Display Expansion loses its own allocation

Starting in February 2027, all Search campaigns with Display Expansion enabled migrate automatically to channel prioritization and budget allocation, per the Help Center. The current allocation setup goes away, and spend may shift between Google Search, Search partners and the Google Display Network. To keep your current configuration, Google says you can set the Google Display Network to "Low priority" with a 50% budget allocation, which is also best-effort. As part of the same change, the Display Network will no longer serve on Search campaigns using the Target Impression Share bid strategy.

Until February 2027, Search campaigns with the Display Network turned on that haven't set priorities or a cap keep the current Display Expansion behavior; if you set priorities before then, they apply right away and replace it. Neither source describes an equivalent migration for Shopping or Performance Max.

What to review before the migration

We recommend deciding campaign by campaign before February 2027 rather than inheriting the default.

Review Search campaigns with Display Expansion enabled and decide whether the 50% Google proposes is what you want. Picking the number before the migration beats finding it later in a spend report.
If you opted out of Search partners or the Display Network, it's worth testing a small cap, like the 5% in the Help Center example, and checking conversions by channel before opening it up further. That's the use case Google's announcement describes.
Don't treat the cap as an exclusion. If any overspend is unacceptable, opting out is still available; the Help Center frames Low priority as an alternative to opting out.

For smaller budgets, a percentage of daily budget is easier to calibrate than an on/off switch, even though it's still best-effort. That's our read, not something Google states. Neither source publishes performance data for Search partners or Display, so the size of the cap has to come from each account's own conversions. They also don't explain how to list the campaigns that have Display Expansion enabled, or whether Google will notify you in the account before migrating; the Help Center links to its Display Expansion page.

Who can set it up, and who can't yet

The limitation that hits hardest if you run many accounts is that you can't set channel prioritization from a manager account: it has to be done in each client account or at the campaign level, in Google Ads or Search Ads 360, and support for the Google Ads API and Google Ads Editor is listed as "coming soon", with no date. With campaign total budgets it only works in Demand Gen, shared budgets require all campaigns to be the same type, and experiments with multi-campaign shared budgets aren't supported: all channels are treated on the same priority tier.

Google's announcement says the controls are rolling out "globally", but neither source publishes a country list, and the Help Center notes that availability varies by campaign type and rollout timing. If the "Channel Prioritization" card isn't in your account settings yet, that's part of the progressive rollout.

This content was developed with AI assistance and reviewed by the Zenda team. Any bad ideas are entirely our own.