How to Cap Display Spend in Google Ads Performance Max Campaigns?

If you’re running Performance Max campaigns in Google Ads, you’ve probably encountered a familiar problem: you can set your campaign budget, adjust your bidding strategy, and provide audience signals, but deciding exactly where your advertising budget goes has traditionally been much harder.

That is beginning to change.

On October 14, 2026, Google announced two new features called Channel Prioritization and Budget Allocation. Together, they give you more influence over how your Performance Max (PMax) budget is distributed across Google’s advertising channels, particularly the Google Display Network and Search partners.

To understand how these changes affect your campaigns, it is useful to first understand how Google Ads works and how its advertising system operates. This provides a better understanding of how Google uses automated bidding, campaign objectives, and advertising inventory to determine where your ads appear and how your budget is utilised.

You can now assign different priority levels to eligible channels and specify how much of your average daily budget you’re willing to allocate to lower-priority inventory.

It’s a useful development, especially if you’ve been hesitant to let Performance Max spend heavily on Display placements without sufficient control.

But there’s a catch. The spending limits aren’t always absolute, and Google’s default settings won’t necessarily change how your existing campaigns operate.

Here’s what the new feature means, how you can configure it, and what you should consider before changing your Performance Max campaigns.

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What Is the New Display Spend Cap in Performance Max?

Google’s new channel prioritization and budget allocation controls let you influence how your campaign budget is distributed across supported advertising channels.

Previously, you had fewer ways to directly influence channel-level spending within Performance Max. Google used its automated bidding system to determine where ads should appear based on campaign objectives, audience signals, and the likelihood of achieving your conversion goals.

The new feature gives you another layer of control.

You can now assign channels to one of two priority levels:

• High priority: Google prioritizes spending on these channels before allocating the remaining budget to lower-priority channels, subject to your bidding targets.
• Low priority: Google considers these channels after high-priority inventory and can apply a specified daily budget allocation percentage.

You can also set a low-priority channel’s allocation to 0% to prevent spending on it.

For example, suppose you’re running a Performance Max campaign to generate real estate leads. You may want to prioritize Google’s core channels while limiting the amount spent on the Display Network until you have enough performance data to justify a larger allocation.

Instead of relying entirely on automated budget distribution, you can use the new controls to set boundaries.

One important distinction, though: the percentage allocation works on a best-effort basis. It isn’t a guaranteed hard spending cap, and your actual daily spending on a channel may occasionally exceed the percentage you specify.

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How does Channel Prioritization Work in Performance Max?

The feature is relatively straightforward once you understand how Google organizes its channels.

In Performance Max, Google groups Search, YouTube, Discover, Gmail, and Maps together under a single category called Google channels. You cannot independently prioritize each of these Google-owned channels using this particular control.

However, you can assign separate priority levels and budget allocations to the following:

• Google channels
• Google Search partners
• Google Display Network

This distinction matters because you aren’t choosing between Search and YouTube individually. You’re deciding how Google should prioritize its grouped inventory relative to Search partners and Display.

1. High-priority channels receive attention first

When you mark a channel as high priority, Google AI prioritizes it before distributing the remaining budget to low-priority channels.

However, this doesn’t mean every high-priority channel will automatically receive its full share of spending. Performance Max still considers your bidding strategy and campaign targets.

For campaigns using Target CPA or Target ROAS, the system continues working toward those goals.

2. Low-priority channels receive a specified allocation

When you move a channel to low priority, you can optionally specify a percentage of your daily budget for that channel.

Suppose your Performance Max campaign has an average daily budget of $200.

If you set the Display Network to low priority with a 20% allocation, Google will aim to keep Display spending at or below $40 per day.

Here’s how that works:

Average daily budget	Display allocation	Intended daily allocation
$100	10%	$10
$200	20%	$40
$500	25%	$125
$1000	5%	$50

These figures are illustrative. The allocation is calculated using your campaign’s average daily budget, not its actual daily spend, and Google describes the limit as best-effort rather than guaranteed.

The allocation resets each day. Unused or excess allocation doesn’t carry over to the following day.

3. Setting the allocation to 0% turns the channel off

If you don’t want a particular low-priority channel to receive any spend, you can set its budget allocation to 0%.

For example, if you don’t want your Performance Max campaign to spend on the Display Network, you can assign Display to low priority and set its allocation to 0%.

This gives you an option between allowing unrestricted participation and using a limited budget allocation.

Keep in mind that this is different from simply marking a channel as low priority. Low priority alone doesn’t prevent spending.

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How to Cap Display Spend in Google Ads Performance Max: Step by Step

Google began rolling out the feature on October 15, 2026, so you may not see the settings in every account immediately.

Once they’re available, you can configure them at the campaign level or establish defaults for eligible campaigns at the account level.

Method 1: Set a Display Spend Cap at the Campaign Level

Step 1: Open your Google Ads account settings

Sign in to your Google Ads account and navigate to Account settings.

Look for the Channel Prioritization section or card.

The feature is rolling out progressively, so its availability and exact placement may vary depending on your account and campaign type.

Step 2: Select Performance Max campaigns

Within the Channel Prioritization settings, select Performance Max as the campaign type you want to configure.

You’ll see the supported channel categories, including Google channels, Search partners, and the Google Display Network.

Remember that Google channels are grouped together in Performance Max. You cannot use this setting to prioritize Search independently of YouTube or Maps.

Step 3: Change Display to low priority

By default, all channels are assigned high priority.

If you want to control Display spending, change the Google Display Network setting from High priority to Low priority.

You can also change Search partners to low priority if you want to limit its budget allocation.

This is an important step. Simply opening the settings won’t change your campaign’s spending behavior. You need to make and save the changes yourself.

Step 4: Enter your budget allocation percentage

Once you’ve assigned the Display Network to low priority, enter the percentage you want Google to use as its daily allocation target.

Your choice should depend on your campaign goals, the quality of leads or sales generated, and how much you’re comfortable spending on that channel.

For example:

• 0%: Prevent spending on Display.
• 10%: Allow a limited allocation for testing.
• 20%: Give Display a larger test allocation while retaining control.
• 50%: Allow a more substantial allocation, depending on your strategy.

These are illustrative allocation choices, not Google-recommended percentages for every campaign.

Step 5: Save and review the settings

Save your changes and verify that the intended priorities and percentages are applied.

If you want to change only one Performance Max campaign, open the Campaigns page, select the campaign, and navigate to Settings. Expand Channel Prioritization and select the option to use campaign-level settings to override the account defaults.

Make your changes and save them.

Be careful when using shared budgets. A budget allocation applied to a shared budget affects that shared budget as a whole across the campaigns using it.

Method 2: Set Channel Priorities at the Account Level

If you’re managing several Performance Max campaigns, adjusting them individually can become repetitive.

Google also lets you configure account-level defaults.

Navigate to Account settings, locate Channel Prioritization, select Performance Max as your campaign type, and assign the appropriate priority levels and budget allocations.

These defaults apply to eligible campaigns of that type unless you override them at the campaign or shared-budget level.

Be careful with shared budgets, though. Google applies the allocation across the shared budget as a whole, rather than independently to each participating campaign.

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Why Is Google Introducing These Controls Within the Ads System Now?

Google’s explanation is straightforward: advertisers want more transparency and control over how their budgets are distributed.

That makes sense. When you’re responsible for generating leads, sales, or measurable revenue, it’s reasonable to want some influence over where your money goes.

But there’s another interesting angle.

In its official announcement, Google specifically addresses advertisers who previously opted out of Search partners or the Google Display Network. The company positions the new controls as a way for those advertisers to reconsider these networks without committing unrestricted budgets.

In other words, Google isn’t only providing more control. It’s also encouraging advertisers to test inventory they may have deliberately avoided.

That doesn’t necessarily mean Display traffic is poor quality. Some businesses generate valuable conversions through Display placements, particularly when their campaigns have strong audience signals, effective creative assets, and reliable conversion tracking.

Others may find that the same inventory delivers relatively weak commercial outcomes.

The difference often comes down to your business model, conversion objectives, and how effectively you measure results.

So, while Google’s new controls are welcome, you shouldn’t assume that enabling more networks will automatically improve performance.

A better approach is to treat additional inventory as something that needs to earn its share of your advertising budget.

What Happens to Google Search Campaigns With Display Enabled in February 2027?

Although this article focuses on Performance Max, another important change affects traditional Google Search campaigns.

Starting in February 2027, Google will automatically migrate Search campaigns using Display Expansion to its new channel prioritization and budget allocation system.

Under the previous Display Expansion setup, Google could use unspent Search campaign budget to serve ads on the Google Display Network, with a 50% allocation applied behind the scenes.

That existing allocation behavior will be replaced as part of the migration.

If you want to preserve the previous configuration, Google’s recommendation is to set:

• Google Display Network: Low priority
• Daily budget allocation: 50%

The 50% setting is intended to preserve the previous allocation arrangement, not guarantee that exactly half your budget will go toward Display.

There’s another change to be aware of: the Google Display Network will no longer serve through Search campaigns using the Target Impression Share bidding strategy after this transition.

Also, if you configure channel priorities before February 2027, your new settings take effect immediately rather than waiting for the automatic migration.

For advertisers managing both Search and Performance Max campaigns, this makes a broader account review worthwhile.

You may discover that some of your existing campaigns are already distributing spend across networks differently from what you originally intended.

Should You Set Display and Search Partners to Low Priority in Every PMax Campaign?

Personally, I’d consider setting both the Display Network and Search partners to low priority in Performance Max campaigns, then increasing their allocations when the data supports it.

However, I wouldn’t treat this as a universal rule.

The right setting depends on your campaign objectives, the quality of your conversion tracking, and the role each channel plays in generating results.

For a lead generation campaign, especially one where you pay for expensive or high-intent leads, you may want to be cautious about allowing additional inventory to consume a substantial portion of your budget without evidence that it contributes to your goals.

For an e-commerce campaign, the situation could be different. Display inventory might contribute to product discovery, remarketing, or conversions that don’t show up clearly in a last-click report.

I’d approach the decision in three stages.

Start with a controlled allocation

If Display or Search partners haven’t demonstrated consistent value, consider moving them to low priority and assigning a modest allocation.

If you don’t want the campaign spending on a particular channel at all, you can use 0%. But if you’re still evaluating that channel, a small allocation may be more useful than switching it off immediately.

Check conversion quality, not just conversion volume

A channel generating more conversions isn’t necessarily the better channel.

For example, a real estate campaign may generate several inquiries through Display, but those leads might have lower budgets, weaker purchase intent, or a lower likelihood of scheduling a site visit.

In that situation, looking at cost per lead alone could give you the wrong impression.

Review metrics such as qualified leads, cost per qualified lead, booked appointments, sales opportunities, and revenue where available. Give conversions enough time to be reported before drawing conclusions.

Increase allocations when the evidence supports it

If a channel consistently generates valuable conversions at an acceptable cost, consider increasing its allocation.

There’s no need to keep a channel restricted simply because it started as a low-priority test.

The purpose of this feature is to give you more control over how you allocate spending. Use that flexibility to test your assumptions, review the results, and adjust your settings as the evidence develops.

An Important Consideration: Google AI Still Optimizes Across Channels

It’s worth understanding what these controls don’t do.

Performance Max remains an automated, cross-channel campaign type. Google uses its bidding system to optimize toward your campaign goals, and channel-level performance doesn’t necessarily tell the entire story.

A channel that appears less effective on an average CPA or ROAS basis may still offer valuable incremental conversions. Similarly, a channel that looks strong in a short reporting window may not continue performing at the same level.

Google’s documentation also explains that channel prioritization alone generally has little effect on budget distribution when a Target CPA or Target ROAS campaign isn’t limited by budget. In those cases, the budget allocation percentage can still influence spending on low-priority channels.

So, if your campaign isn’t budget-constrained, don’t assume that switching Display to low priority will automatically reduce its spending. The allocation percentage is the more relevant control in that situation.

I’d also avoid changing these settings too frequently. Give your campaigns enough time to generate meaningful data, account for conversion delays, and assess the impact before making another adjustment.

What About the February 2027 Change to Search Campaigns?

There’s another reason to pay attention to Google’s channel prioritization update, although it applies specifically to Search campaigns using Display expansion rather than to Performance Max itself.

Starting in February 2027, Google plans to transition Search campaigns with the Display Network enabled to the new channel prioritization and budget allocation model.

Under the current Display expansion setup, Google can use unspent Search campaign budget to serve ads on the Display Network, subject to its existing rules.

When the transition takes effect, that spending arrangement will change. Advertisers may see spending shift between Google Search, Search partners, and the Display Network.

Google says that if you want to maintain the existing configuration, you can set the Display Network to Low priority with a 50% daily budget allocation.

There’s an important qualification here: the 50% allocation is also best-effort, not a guaranteed cap. Google has additionally stated that the Display Network will no longer serve on Search campaigns using the Target Impression Share bidding strategy as part of this change.

If you’re running Search campaigns with Display expansion enabled, review the settings before the transition rather than assuming the existing behavior will continue unchanged.

My Recommendation: Review Your Channel Settings Now

Google’s new controls give advertisers another way to manage spending across its advertising inventory. That’s useful, especially if you’ve been reluctant to use Display or Search partners because you wanted more control over budget allocation.

These automated advertising mechanisms are part of the broader pay-per-click advertising ecosystem. If you want to understand the fundamentals, here’s a useful guide explaining how PPC advertising works and how advertisers pay for online clicks.

At the same time, I’d be cautious about treating the update as a reason to restrict every campaign automatically.

Google’s announcement explicitly presents these controls as a way for advertisers who previously opted out of Search partners or the Display Network to test those channels with more confidence. That suggests one of the intended use cases is to make these channels easier to try, rather than simply encouraging advertisers to reduce spending.

Whether Google ultimately benefits from greater participation in Display is a separate question. The practical decision for you should come down to campaign performance, lead quality, and business outcomes.

Here’s the approach I’d take:

1. Review the channel performance report for each Performance Max campaign.
2. Check whether Display and Search partners are contributing meaningful conversions.
3. Move underperforming or unproven channels to low priority where appropriate.
4. Set a sensible allocation percentage, or 0% if you want to prevent spending on that channel.
5. Monitor qualified conversions and overall campaign performance before increasing or reducing the allocation again.

Most importantly, remember that the new feature doesn’t guarantee a hard spending limit. Treat the percentage as a control that guides Google’s allocation, and continue monitoring actual spend.

The real advantage is that you no longer have to approach every channel as an all-or-nothing decision. You can set priorities, test channels within defined boundaries, and give more budget to the inventory that demonstrably supports your business goals.

For advertisers managing multiple Performance Max campaigns, that’s a meaningful improvement in budget management. The key is to use the new flexibility deliberately rather than simply accepting the default settings.