Performance Max

Set up a new Shopping campaign in Google Ads today and Google steers you toward Performance Max. The format runs your ads across Search, Shopping, YouTube, Display, Gmail, and Discover from a single budget. Placement, bidding, and audience targeting are all handled by Google’s AI.

That loss of channel-level control is the trade. In exchange, Google routes spend toward whichever combination of surfaces converts best against your goal.

How it shows up in the wild

KEH Camera (used camera marketplace, agency Inflow, 2022–2023 transition): Switched from Standard Shopping to Performance Max and tracked the results over six months. Q1 2023 revenue came in 76.3% higher than the same quarter under Standard Shopping, per Inflow’s case study. The campaign averaged 9.93× ROAS monthly over that period, with a 44% increase in transactions.

Tinuiti (Q1 2026 Digital Ads Benchmark, tracking advertisers running both PMax and Standard Shopping): PMax now accounts for 67% of Google Shopping ad spend, up from 53% a year earlier, per the benchmark report. For brands running both campaign types simultaneously, PMax delivered slightly higher ROAS than Standard Shopping in Q1 2026. Video and non-shopping inventory consumed 41% of PMax spend that quarter, up from 26% a year earlier.

Why it matters

The 41% non-shopping share means a brand running PMax for Shopping conversions is still spending meaningfully on YouTube and Display placements. My hunch is many ecommerce brands assume PMax behaves like Smart Shopping and never check the channel breakdown in the Insights tab.

At 67% of Shopping spend, PMax is already the default. I think the question for most D2C brands is whether to keep Standard Shopping running alongside it for SKUs where bid control matters.

Related terms

• Smart Bidding — the underlying bid strategy Performance Max uses to optimize against your conversion goal
• ROAS (Return on Ad Spend) — the metric PMax campaigns are most commonly optimized toward
• Advantage+ Catalog Ads — Meta’s feed-driven equivalent, similarly AI-automated across placements
• Dynamic Product Ads — a more controlled, feed-driven alternative for retargeting

Frequently asked questions

Does Performance Max hurt Shopping ROAS by mixing in Display and YouTube inventory? It can. Tinuiti’s Q1 2026 benchmark shows 41% of PMax spend going to non-shopping inventory. If your ROAS dropped after switching from Standard Shopping to PMax, checking the channel breakdown in the Insights tab will show where conversion value is actually landing.

Should I replace Standard Shopping with Performance Max? Most practitioners running ecommerce accounts recommend keeping both. Standard Shopping gives more explicit bid control and visibility into keyword-level performance. PMax covers YouTube and Display inventory alongside Shopping from the same budget.

How much conversion data does PMax need before it works? Google recommends at least 30–50 conversion events per month before Performance Max reliably exits the learning phase. Accounts below that threshold are typically better served starting with Standard Shopping and switching to PMax once the signal volume is there.