Yes, you can run both, and they compete rather than one automatically winning. The old rule — that Performance Max always takes precedence over Standard Shopping for the same product — was changed, and most published answers still repeat it.

On this page

• Why does the old Performance Max precedence rule still matter?
• What Shopping structure works whatever the precedence rule is?
• Can a Shopping priority ladder fail?
• What Shopping campaign structure actually works?

Why does the old Performance Max precedence rule still matter?

For years the guidance was: if a product is eligible in both, Performance Max serves and Standard Shopping does not, full stop. Advertisers built structures on that assumption — using Standard Shopping as a deliberate "loser" campaign that would only pick up what Performance Max declined.

If precedence is now decided in the auction rather than by campaign type, those structures do not behave the way they were designed to, and the failure is silent.

What Shopping structure works whatever the precedence rule is?

Do not rely on campaign type as a routing mechanism. This is the durable lesson and it holds under either rule.

Any structure that relies on bids, priorities, ceilings or campaign type to keep traffic out is a preference, not a wall. The only real wall is negatives.

Proven on a telehealth account, July 2026: two Shopping campaigns at equal priority, one with a $6 cost-per-click ceiling intended to keep it on brand only. 44% to 84% of that campaign's daily spend was non-brand from day one.

The mechanism: a bid ceiling only wins or loses auctions where both campaigns show up. In overflow auctions — every hour the intended catcher is budget-paced-out and absent — the ceiling is irrelevant because there is nothing to lose to.

And the day-one routing check passed, because it only sampled auctions where the other campaign was live. Spot checks sample the good hours.

Can a Shopping priority ladder fail?

A beauty brand ran a proper differentiated ladder — generics at high priority, brand at low. Textbook.

Then a 999-negative dump strangled the high-priority catcher, and its query pool fell through into the low-priority brand campaigns holding the same catalogue. Brand Shopping went $603 → $2,801 a day in four days. Efficiency went 15× → 1.1×.

The ladder routes only while the top rung serves. Strangle, cap or over-negate the catcher and the ladder becomes the leak.

What Shopping campaign structure actually works?

1. Separate brand and non-brand into different campaigns. Always, in Shopping. There is no organic listing in Shopping — every placement is paid — so you always want to own your own brand, and a combined campaign leans toward the cheap brand searches and starves the cold traffic that finds new customers.
2. Put negatives on the brand campaign as exact matches on bare heads, so winning brand-containing longer queries survive.
3. Before tightening any target, check what equal-priority siblings become eligible for those queries. Tightening one campaign lowers its bids and expands the other's pool. On that telehealth account, one target change sent the sibling's budget-lost impression share 18% → 90% overnight.

Related questions

Does a feed-only Performance Max campaign really only run on Shopping?

No. A feed-only campaign is weighted toward Shopping inventory, but it still serves across the Performance Max network — Google generates assets from your product data to fill the other placements. Read the full answer.

How do I stop Performance Max from spending my budget on YouTube?

You cannot switch YouTube off inside a Performance Max campaign. What you can do is see exactly how much it is costing you, fix the signal that is sending it there, and decide whether to split the campaign. Read the full answer.

I added brand exclusions to Performance Max but my brand terms are still showing up — why?

Brand exclusions filter what the campaign can target, not what it can be credited for, and they work on the brand list you gave Google — near-variants, misspellings and brand-plus-modifier queries routinely fall outside it. Read the full answer.

Written by Usama Khan, who runs Google Ads for e-commerce brands and home-services companies at AdventurAds. Figures are from accounts under active management and are anonymised. Last reviewed 2026-08-26.