Cross-Account Negative Lists Get Sharper in the Manager Account
Google improved cross-account negative-keyword lists for MCCs — the fix for agencies and multi-brand advertisers fighting duplicate spend in shared search spaces.
March 2026 improved cross-account negative keyword handling in Manager Accounts — better conflict detection and pruning for multi-account operators whose brand's common terms crossed accounts.
What you need to know
The update in four points:
- Warmer detection of negatives conflicting against active keywords
- List inheritance behaves more predictably across accounts
- Multi-brand agencies save obvious duplicate-stopword hours
- Tighten only after confirming per-account intent differs
What this means for advertisers
For single-account businesses this is a footnote. For agencies running competing clients in adjacent niches, cross-account negatives are invisible revenue-savers that stop your own clients from bidding into each other.
Next step
Agencies: review MCC-level negative lists quarterly for cross-client conflicts. And never apply a list that blocks one brand's name in another brand's account where that term is its own product line.
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