Performance Max in 2026: What's Changed and What Works

Performance Max launched as Google's bet on full AI-powered advertising. The pitch was simple: give Google your assets, budget, and goals, and its machine learning would find the best customers across every Google channel. The reality in 2024 was more nuanced — PMax produced results for some advertisers but frustrated others with its opacity, brand cannibalization, and inconsistent performance.

By early 2026, Performance Max is a materially different product. Google has addressed many of the original complaints while doubling down on the automation-first vision. Whether PMax works for you now depends less on the product itself and more on how you configure it, what assets you provide, and how you structure it alongside your Search campaigns.

What Changed in 2025-2026

The most significant changes address the transparency and control gaps that made PMax frustrating for hands-on advertisers. Google did not make PMax a transparent campaign type — you still cannot see individual search terms or control placement-level bids — but they have added enough visibility to make informed optimization possible.

Brand exclusions are now standard

The biggest practical change: you can now exclude your brand terms from PMax at the campaign level without needing Google support. This single feature addresses the number-one complaint about PMax — that it inflated its performance by bidding on branded searches that your Search campaigns would have captured anyway. Apply brand exclusions to every PMax campaign on day one.

Search themes give partial keyword control

Search themes allow you to suggest keyword-level guidance to PMax. While they are not the same as Search campaign keywords (you cannot set match types or see individual term performance), they steer PMax's search inventory toward your priority topics. Think of them as strong hints rather than hard controls.

Improved asset group reporting

PMax now provides more granular reporting at the asset group level, including channel breakdown (Search vs. Display vs. YouTube vs. Discovery), asset performance ratings, and audience segment insights. This data is still less detailed than Search campaign reporting, but it is sufficient for meaningful optimization decisions.

Negative keywords via support (limited)

You can request campaign-level negative keywords for PMax through Google support or your Google rep. The process is not self-service and typically takes 24-48 hours, but it provides an important safety valve for blocking clearly irrelevant traffic that brand exclusions do not catch.

What Actually Works in 2026

Here is what tends to drive results in PMax versus what the theoretical best practices suggest.

Asset quality is everything

PMax performance scales directly with asset quality and variety. Accounts with 15+ unique headlines, 5+ descriptions, 5+ images, and at least one video consistently outperform those with minimum assets. Google's AI needs raw material to work with — thin asset groups produce thin results. Invest the time upfront to create diverse, high-quality assets.

Audience signals matter more than you think

Many advertisers add audience signals once and forget them. In 2026, audience signals are the primary lever for PMax optimization. Your customer match lists, website visitors, and in-market segments tell PMax where to start looking. Without strong signals, PMax defaults to broad targeting, which works for large budgets but wastes money for smaller ones.

The hybrid Search + PMax model

The accounts seeing the best results run PMax alongside dedicated Search campaigns, not instead of them. Search campaigns capture high-intent queries with full control, while PMax captures incremental conversions from Display, YouTube, and lower-intent search queries. Measure it in your own account: compare conversions and cost per conversion before and after running PMax next to Search.

Common PMax Mistakes to Avoid in 2026

• Running PMax without brand exclusions — this inflates PMax metrics by stealing branded search traffic your Search campaigns would have captured for less
• Using only the minimum required assets — PMax with 5 headlines, 1 image, and no video usually underperforms PMax with 15 headlines, 5 images, and a video
• Setting PMax as your only campaign type — without Search campaigns, you lose all keyword-level control and visibility into what search terms drive your conversions
• Ignoring audience signals — PMax without strong customer match and remarketing signals defaults to broad prospecting, which is expensive for accounts spending under 5,000 EUR/month
• Judging PMax on branded conversion metrics without brand exclusions — this is the most common PMax misconception: the campaign looks great on paper but is just rebadging conversions you would have gotten anyway

How to Set Up PMax Right in 2026

1. Start with Search campaigns first: establish your baseline with keyword-targeted campaigns for 30+ days before adding PMax
2. Create PMax with brand exclusions from day one: go to campaign settings and add all brand name variations to the exclusion list
3. Build comprehensive asset groups: provide 15+ headlines, 5+ descriptions, 5+ high-quality images, and at least 1 video (even a simple slideshow video works)
4. Add strong audience signals: upload your customer list, add website visitor audiences, and select relevant in-market and affinity segments
5. Set search themes for your priority topics: add 5-10 search themes per asset group that reflect your most valuable keyword themes
6. Monitor incremental performance: after 4 weeks, compare total account conversions and CPA before vs. after PMax — if total conversions increased without CPA increase, PMax is adding genuine value
7. Adjust based on channel reporting: use PMax's channel breakdown to identify where conversions come from — if 80% are from Search and you have Search campaigns, PMax may be cannibalizing rather than adding

Should You Use Performance Max in 2026?

For most advertisers, the answer is yes — but as part of a hybrid strategy, not as a standalone solution. PMax in 2026 is a capable tool for incremental reach, remarketing, and audience discovery. It is not a replacement for the control and transparency of Search campaigns. Run both, configure PMax properly from day one, and measure success by total account performance rather than PMax metrics in isolation.