Performance Max vs Search Campaigns in 2026: When to Use Each

Question 1

Should I use Performance Max, Search, or both in 2026?

Accepted Answer

The article recommends running both together with deliberate structure to minimize cannibalization for the majority of advertisers in 2026. In that structure, Search campaigns capture highest-intent, highest-value keywords with exact and phrase match, while Performance Max captures broader queries plus Shopping, Display, video and discovery channels. The article's budget guidelines are 60-70% to Performance Max and 30-40% to Search for ecommerce, 60-70% to Search and 30-40% to Performance Max for B2B and lead generation, and roughly 50/50 for local services.

Question 2

What changed for Performance Max in 2025?

Accepted Answer

According to groas, channel performance reporting rolled out to all PMax campaigns in November 2025, showing clicks, conversions, conversion value and cost by Search, Shopping, Display, YouTube, Gmail, Discover, Maps and Waze. Campaign-level negative keywords increased from 100 to 10,000 per campaign in March 2025, with shared negative keyword lists following in August 2025, and search themes doubled from 25 to 50 per asset group in May 2025. Search-term reporting for Search and Shopping placements and asset-level reporting with impressions, clicks and cost data also became available.

Question 3

What is AI Max for Search and should I enable it?

Accepted Answer

According to groas, AI Max is an optional layer on existing Search campaigns that expands search-term matching, dynamically adjusts ad copy to match intent, and selects optimal landing pages from the site. Google reports a 14% average conversion improvement and up to 27% lift for accounts that relied heavily on exact match keywords, while independent testing cited in the article finds approximately 84% of advertisers report neutral or negative results. The article recommends testing AI Max with Google's experiment framework using a 50/50 traffic split, building negative keyword lists before enabling, and monitoring search-terms reports closely.

Question 4

Why does the article say Search outperforms Performance Max for B2B lead quality?

Accepted Answer

According to groas, Performance Max generates 30-50% more lead volume for most B2B advertisers, but lead-to-customer conversion rates are 20-40% lower. When measured on cost per qualified lead rather than cost per form fill, Search campaigns outperform Performance Max by 25-45% across most industries. The article notes an exception for top-of-funnel brand awareness, where Performance Max Display and YouTube inventory can feed future Search conversions.

Question 5

How do I prevent Performance Max from cannibalizing my Search campaigns?

Accepted Answer

According to groas, Google generally gives priority to Search when an exact-match keyword exists, but Performance Max may serve instead on broad or phrase matches if its AI predicts better results. The article recommends using highest-value keywords as exact match in Search, adding core Search keywords as negatives in Performance Max using the 10,000 negative keyword limit, and monitoring search-terms reports in both types for overlap. It also recommends using Performance Max search themes to target queries Search does not cover and reviewing Performance Max channel reporting to detect heavy Search spend indicating overlap.