Performance Max was introduced to Google Ad Grants in 2025, marking the first significant expansion of the program beyond pure search advertising. For nonprofits that have been limited to standard search campaigns, PMAX opens up new targeting capabilities and a faster path to spending the full $10,000 monthly budget. It also requires a different approach to setup and management than search campaigns. Understanding how PMAX works within Ad Grants — and how it differs from standard search — is essential before adding it to your account.
What Performance Max Is in the Ad Grants Context
Performance Max is a Google Ads campaign type that uses automation and audience signals to find and convert users across multiple placements. Within Ad Grants, PMAX operates primarily on Google Search, with limited additional placements including Google Maps. It is not a display advertising tool or a YouTube advertising tool in the Ad Grants context — nonprofits should not expect significant standalone placements outside of search and Maps.
What PMAX does offer that standard search campaigns do not is more sophisticated audience targeting, a broader reach through Google’s automated matching, and significantly faster budget utilization. A well-configured PMAX campaign will spend budget more aggressively than an equivalent search campaign, which makes it a useful tool for organizations that have struggled to reach their full monthly allocation.
PMAX requires conversion-based bidding with no alternative. This means accurate, meaningful conversion tracking is not optional — it is a prerequisite for the campaign type to function. Before adding PMAX to any account, confirm that conversion tracking is correctly configured and that conversions are set to Primary status with Account Default Goals assigned.
How PMAX Differs from Search Campaigns
Understanding the differences between PMAX and standard search campaigns helps clarify when and how to use each.
Standard search campaigns give you explicit control over keywords. You define a list of specific terms, organize them into tightly themed ad groups, and Google shows your ads when searches match those terms. You can add negative keywords, monitor individual keyword quality scores, and precisely control which searches trigger your ads.
PMAX works differently. Instead of explicit keywords, you provide Search Themes — up to 25 high-level topic areas — and Google uses those as a starting point to find relevant searches broadly. The targeting is more automated, the reach is wider, and Google has significantly more autonomy over when and where your ads appear.
The practical implications are:
Spend rate: PMAX ramps budget faster than search campaigns. If your goal is to reach full $10,000/month utilization, PMAX is the most direct path there.
Average CPC: Across Ad Grants accounts, average cost per click on PMAX runs approximately $4.00. If CPCs climb to $6–$8 or higher, evaluate whether to cap PMAX daily spend and shift more budget toward search campaigns where you have greater cost control.
Maintenance: Search campaigns require ongoing attention — negative keywords, quality score monitoring, keyword-level performance analysis. PMAX is more automated and requires less hands-on maintenance, though it is not zero-maintenance.
Control: Search campaigns offer high precision. PMAX trades precision for scale. Both have a role in a mature account.
Audience Signals and Targeting
The real value PMAX adds to Ad Grants lies in its audience targeting options, which go well beyond what standard search campaigns support. Configuring these signals correctly is what separates a high-performing PMAX campaign from one that simply spends budget without direction.
Search Themes: Up to 25 high-level topic keywords that tell Google what your campaign is about. These function like broad match on a larger scale — a handful of core themes is sufficient. You do not need to be exhaustive. Google expands from these themes to find relevant searches.
Custom Segments — Search Terms: Target people who tend to search for specific keywords, even if they are not actively searching right now. Upload a keyword list similar to what you would use for search themes. This allows PMAX to reach audiences with demonstrated interest in your cause.
Custom Segments — Website Visitors: Target people who visit certain types of websites by providing relevant URLs. This reaches audiences who have proven interest in topics related to your mission, even if they have not visited your site directly.
First-Party Data: Upload Google Analytics audiences — website visitors, past converters, existing donors — and Google uses these to find and target lookalike audiences. This is particularly powerful for organizations with an established web presence and meaningful visitor history in GA4.
Maps Ads: PMAX enables nonprofits to appear in Google Maps results. For location-based organizations — animal shelters, food banks, community centers, health clinics — Maps placement is a meaningful differentiator that search campaigns alone cannot provide.
Creative Requirements
PMAX uses a different creative structure than standard search campaigns. Rather than the 15 headlines and 4 descriptions of a Responsive Search Ad, PMAX asset groups require:
- 15 short headlines — up to 30 characters each, written in Title Case
- 5 long headlines — up to 90 characters each
- 5 descriptions — up to 90 characters each
- Images — at minimum 3–5 images scraped or uploaded from your website
- YouTube video — optional, but recommended. Including a video improves ad quality score even if it does not result in separate video placements within Ad Grants
Write each asset to stand alone. Google mixes and matches creative elements automatically, so headlines and descriptions need to make sense in any combination. Aim for the highest possible asset strength rating in the Google Ads interface.
Setting Up Your First PMAX Campaign
The recommended starting point for most accounts is a single PMAX campaign targeting the homepage, with additional asset groups added as the campaign matures.
Campaign configuration:
- Bidding: Maximize Conversions — this is the only available strategy for PMAX and cannot be changed
- Budget: Set at whatever level is appropriate for your account stage, keeping in mind PMAX spends aggressively
- Geo-targeting: Match to where your audience actually is — U.S. only, specific regions, or international as needed
Asset group setup:
- Build your creative assets using content from your most important landing page
- Populate all Search Themes with your core topic areas
- Configure Custom Segments based on relevant search terms and website URLs
- Upload GA4 audiences if available and meaningful in size
- Include images and, if available, a YouTube video
Monitor CPC closely in the first few weeks. PMAX can drive CPC up if targeting signals are thin or if the audience pool is narrow. If average CPC rises significantly above $4.00, review your audience signals and consider capping daily budget while search campaigns continue to run.
PMAX and Search Campaigns Together
The most effective Ad Grants accounts use PMAX and search campaigns in combination rather than relying exclusively on one or the other. Search campaigns provide precision and control for your highest-priority keywords and audiences. PMAX provides scale, faster budget utilization, and access to audience targeting capabilities that search alone cannot match.
A practical structure for a mature account: run two to four tightly themed search campaigns covering your core objectives — donations, volunteer recruitment, primary programs — alongside one PMAX campaign targeting the homepage with audience signals enabled. As the account grows, additional PMAX asset groups can be built around specific landing pages or programs using the same workflow.
Search campaigns handle the controlled, keyword-level optimization. PMAX handles the broader discovery and budget utilization. Together they cover more ground than either does alone.
Want to get Performance Max set up correctly from the start? Ad Grants Pilot automatically builds and configures PMAX campaigns during onboarding — including creative assets, audience signals, and search themes — so your account hits the ground running.