Performance Max Negative Keywords: Account vs Campaign vs List Level, Real Limits, and When They Actually Help (2026)
Negatives apply at three levels in Performance Max, all of them Search and Shopping only. Here is where each one belongs, what the current caps really are, and when Smart Bidding has already done the job for you.
Performance Max negative keywords apply at three levels: automatic account-level exclusions, explicit campaign-level lists, and shared negative keyword lists attached to many campaigns at once. All three reach Search and Shopping inventory only, never the Display, YouTube, or Discovery placements Performance Max also uses.
The Short Answer (Where Negatives Apply, What They Cost You to Set Up)
Account-level negatives apply automatically across every campaign, at no setup cost beyond the initial list. Campaign-level negatives are explicit: added inside a single PMax campaign, with a cap far above the 100-term ceiling Google shipped at launch (details below). Negative keyword lists sit above both: build one list, attach it to many campaigns, and updates apply everywhere at once.
None of this is a new feature, whatever your X feed suggests. Google began rolling campaign-level negatives into Performance Max around December 2024 and early 2025, and the mechanics have been stable since. Recent chatter framing campaign-level negatives as "just arrived" in PMax is treating an eighteen-month-old rollout as breaking news; the timeline below shows why that framing does not hold up. In our own scan of 103 recent public discussions, "negative keyword" setup was the single most-raised theme (21%), just ahead of broad match questions (17%). The real question in 2026 is not whether negatives exist in PMax, it is where to place them.
Account-Level, Campaign-Level, List-Level: The Precedence Stack
Performance Max checks negative keywords at three levels, and they stack rather than override each other: account-level exclusions apply first and everywhere, campaign-level negatives add campaign-specific blocks on top, and list-level negatives let one shared set cover many campaigns without duplicate entry.
How PMax negative keywords apply, by level:
| Level | Who applies it | Current limit | Applies to | Scope |
|---|---|---|---|---|
| Account-level | Automatic account-wide setting | Applies globally, not user-capped per campaign | Every campaign in the account, including all PMax campaigns | Search and Shopping inventory only |
| Campaign-level | Advertiser, inside a single PMax campaign | 10,000 keywords per campaign (analyzify.com, updated 2025-07-24; corroborated by lunio.ai, updated 2025-09-16) | One campaign at a time | Search and Shopping inventory only |
| Negative keyword list | Advertiser, built once and attached | Reportedly 5,000 keywords per list (Google Ads Liaison, X, 2025-09-23) | Up to 1,000 campaigns per list, as reported | Search and Shopping inventory only |
An account-level negative blocks a query everywhere, even if nobody added it to a specific campaign. Campaign-level and list-level negatives then narrow further, and both behave the same way operationally: a term on either excludes that campaign's PMax traffic from matching it. The real difference is maintenance. A campaign-level list has to be rebuilt in every campaign; a shared list updates once. That is why the negative keyword precedence order in practice runs account, then list, then campaign once an account runs more than two or three PMax campaigns with overlapping intent. For standard Search-campaign exclusion types, see Google Ads negative keywords; this precedence stack is one layer of the broader discipline in Google Ads optimization.
The Real Limits in 2026 (and Why They Matter More Than You Think)
The campaign-level cap now sits at 10,000 negative keywords per campaign, up from the 100-term ceiling Google shipped at launch (analyzify.com, updated 2025-07-24; corroborated by lunio.ai, updated 2025-09-16). That jump matters: 100 terms barely covers the obvious exclusions (jobs, DIY, review sites); 10,000 supports a genuinely category-organized list.
Two dated milestones bracket the rollout. Ginny Marvin's original announcement confirmed campaign-level negatives extend to both Search and Shopping components. Self-serve campaign-level negatives became fully available in the standard Google Ads interface on January 23, 2025, replacing the older Performance Max Campaign Modification Request Form workflow (analyzify.com). Practitioner experience lagged: as of nilsrooijmans.com's May 2, 2025 update, the same feature was reportedly "still in Beta" for many accounts. Rollout dates and felt availability are not the same thing. Check your own account rather than assume the feature is live everywhere.
The newest milestone is not from Google. Microsoft Advertising rolled negative keywords out to its own PMax equivalent globally in March 2026, with a 5,000-keyword list cap and the identical Search/Shopping-only scope (about.ads.microsoft.com, 2026-03-17). This is no longer a Google-only capability.
Does This Conflict With Smart Bidding (and AI Max)?
Negative keywords earn their keep when a campaign's conversion volume is still building, or when a category is clearly off-brand or off-intent regardless of what Smart Bidding is doing with the data. They add diminishing value once a campaign is stable on Target ROAS or Target CPA with strong conversion volume, because Smart Bidding is already discounting most of the same bad queries the negative list would block.
PPC consultant Andrew Lolk made the sharper version of this case publicly (X, 2025-05-27): Smart Bidding already discounts low-quality queries algorithmically, so manually blocking them is often redundant, and can strip out signal Smart Bidding was using to learn. Lolk is right about mature campaigns: a PMax campaign converged on Target ROAS with a healthy weekly conversion count has already told Smart Bidding which query patterns convert, and a negative list on top mostly formalizes decisions the algorithm made weeks ago.
Lolk is less right about campaigns still building signal. Early in a campaign's life, or after a budget or goal change resets the learning period, Performance Max explores more broadly, and off-intent categories (jobs, free, DIY, competitor brand terms) can burn budget before Smart Bidding has enough conversions to discount them on its own. That is when a short, category-based negative list does real work. AI Max raises the same tension at higher intensity. It broadens match and creative automation further, which strengthens the case for letting the algorithm handle it, but does nothing to weaken the case for blocking obviously off-intent categories by hand. For the deeper mechanics, see Google Ads AI Max.
run zero negative keywords
have fewer than 10 applied
A Starter Negative Keyword List (and How to Find Your Own)
A practical starter list covers eight to twelve categories, not individual terms: jobs and careers ("jobs," "hiring," "salary"), free and DIY ("free," "diy," "template"), competitor brand terms, wrong-intent modifiers ("reviews," "complaints," "refund," "lawsuit"), irrelevant geography, and wrong product category terms adjacent to what is actually sold. That is an example of a negative keyword in practice: a term or category blocked because it signals the wrong intent, not a competitor's entire brand vocabulary. Because PMax's matching behaves like an aggressive broad match layer, category-level negatives block more waste than one-off terms.
Finding candidates is harder in Performance Max than in a standard Search campaign, since PMax search-term visibility is more limited by design. One practitioner summed up the discipline simply: "add negative keywords early" (@The_Last_Hurdle, X, 2026-07-30). Three practical paths: the Insights tab, the "Estimate the impact" feature built for evaluating a negative before adding it (support.google.com/answer/15726455), and the account-level search terms report. For a recurring PPC audit across many accounts, negative keywords scripts can bulk-review and sync lists rather than editing each account by hand.
What Performance Max Doesn't Let You Fix With Negatives
Negative keywords narrow Performance Max. They do not fix it. First, negatives only reach Search and Shopping inventory: they do nothing for wasted spend on Display, YouTube, or Discovery placements, a real disadvantage relative to channel-specific campaigns where every placement is directly controllable. Second, placement-level transparency stays limited, and Quality Score is not visible at the PMax level the way it is in standard Search campaigns. Third, a negative list cannot repair a misconfigured asset group, weak creative, or broken conversion tracking and attribution. If a campaign underperforms because tracking fires on the wrong event, no negative list fixes that. For that diagnostic, see Performance Max not converting.
Frequently Asked Questions
Can I add negative keywords to Performance Max?
Yes. Account-level negatives apply automatically to all Search and Shopping inventory, and explicit control now exists at both campaign level (up to 10,000 terms, analyzify.com/lunio.ai) and shared list level.
What are the disadvantages of using Performance Max?
Placement-level transparency stays limited, query-level reporting is restricted compared to standard Search campaigns, and negative keywords only reach Search and Shopping inventory (support.google.com/answer/15726455). Advertisers trade control for automation, and negatives alone do not reverse that trade.
What is an example of a negative keyword?
Category-level exclusions such as "jobs," "free," "diy," or "[competitor brand] reviews" (see the starter list above). Single-term negatives work too, but category-based exclusions cover more wasted spend with less ongoing maintenance.
Does Performance Max have keywords?
Not in the traditional Search-campaign sense. Performance Max targets through asset groups, audience signals, and automated matching rather than advertiser-chosen keywords and match types; negative keywords are the one keyword-level control advertisers still retain.
Where B6 Fits (Automating Negative-List Maintenance, Not Replacing the Judgment)
Negative keyword lists decay. Someone has to review the search-term and Insights signal weekly and decide whether a new exclusion belongs at account, campaign, or list level. That review is exactly the kind of recurring work that gets skipped once an account looks stable. Kampaio's Sage agent surfaces negative-keyword candidates from the search-term and Insights signal automatically; Buzz flags the point where a campaign has crossed into strong, stable conversion volume, the threshold where a negative list stops paying for itself relative to what Smart Bidding already does. See Sage, Buzz, or pricing.
Stop rebuilding the same negative list in every campaign
Kampaio reviews the search-term and Insights signal between your check-ins, proposes the exclusion at the right level, and shows the reasoning behind every call.
See pricingSources
- Google Ads Help. "About negative keywords in Performance Max campaigns." support.google.com, fetched 2026-08-05.
- Atasoy, Ismail. "Negative Keywords in Performance Max Campaigns." analyzify.com, updated 2025-07-24.
- Harris, Ben. "Performance Max Campaign-Level Negative Keywords." lunio.ai, updated 2025-09-16.
- Rooijmans, Nils. "How to Add Negative Keywords to Your Performance Max Campaigns." nilsrooijmans.com, updated 2025-05-02.
- Microsoft Advertising. "Negative keywords for PMax and other product news for March 2026." about.ads.microsoft.com, 2026-03-17.
- Google Ads Liaison (@adsliaison). X post, 2025-09-23.
- Lolk, Andrew (@AndrewLolk). X post, 2025-05-27.
Caps and rollout dates are quoted from the sources above, not from an audited account. The 5,000-per-list and 1,000-campaigns-per-list figures are reported by Google Ads Liaison on X rather than documented in Google Ads Help, so treat them as reported rather than confirmed. The Opteo figures are cited via lunio.ai. Sage and Buzz illustrate how Kampaio's agents apply this logic, not an audited result from a named advertiser.