AI Max Brand Exclusions & URL Controls: How to Stop Automation From Bidding on Competitor Brand Terms

Understanding AI Max Brand Exclusions in Google Ads

AI Max for Search campaigns gives Google's automation broad latitude to expand match types, generate new headlines, and find queries that human keyword lists might miss. That latitude is largely a feature — but it creates a specific and costly risk around brand terms. Without explicit controls, AI Max can bid on your competitors' brand names, driving up costs on queries where purchase intent is already anchored to another brand. It can also trigger your ads on your own brand terms inside campaigns that were never designed to handle branded traffic, fragmenting attribution and distorting your ROAS data.

"Campaigns running AI Max without brand exclusion lists frequently see 15–25% of impressions attributed to brand-adjacent or competitor brand queries within the first month — queries that typically convert poorly outside dedicated brand campaigns."

The controls Google provides fall into three categories: brand lists (which tell AI Max which brand names to avoid or protect), URL expansion settings (which constrain the landing pages automation can send traffic to), and negative keywords (which block specific query patterns at the campaign or ad group level). Used together, they give you meaningful oversight without sacrificing the scale benefits that make AI Max worth deploying in the first place. For a broader look at how these controls fit into overall campaign governance, the Google Ads automation controls guide covers the full safety framework in detail.

Prerequisites Before You Configure

Before touching any exclusion settings, confirm the following are in place. Skipping these steps means your exclusions will either be incomplete or applied to the wrong campaign structure entirely.

• Identify your campaign type: AI Max controls are only available inside Search campaigns with AI Max enabled. Confirm the toggle is active in your campaign settings before looking for brand exclusion fields.
• Audit your existing brand campaigns: Know which campaigns are already handling branded traffic. If you run a dedicated brand campaign, those terms need protecting from AI Max expansion in your non-brand campaigns — not from all campaigns globally.
• Compile your brand term list: Document every variation of your brand name including common misspellings, product names, abbreviations, and any co-branded terms. Do the same for your top three to five competitors.
• Check Google Ads access level: Brand list creation requires Standard or Admin access. Read-only accounts cannot create or modify shared brand exclusion lists.
• Review your MCC structure: If you manage multiple client accounts under a Manager account, brand lists can be shared at the MCC level — a significant time saver worth setting up before individual campaign configuration.

If you are new to the full AI Max setup process, the Google Ads AI Max campaigns complete guide covers initial campaign structure decisions that affect how exclusions should be layered.

Step 1: Build Your Brand Exclusion List

Brand exclusion lists in Google Ads are shared assets — you create them once in your shared library and then apply them to individual campaigns. This architecture means a single well-maintained list can protect multiple campaigns simultaneously.

• Navigate to Tools & Settings → Shared Library → Brand Lists.
• Click the blue + button to create a new brand list and give it a descriptive name (e.g., "Competitor Brand Exclusions – Non-Brand Campaigns").
• Search for each competitor brand by name. Google will surface official brand entries from its index — select the exact match rather than typing a free-form term, as indexed brands get broader semantic coverage.
• Add every competitor you identified in your prerequisite audit. Include parent companies if their brand name appears in queries relevant to your category.
• Save the list, then navigate to the target AI Max campaign, open Settings → Brand Exclusions, and apply the list.
• Create a separate list for your own brand terms if you want to prevent AI Max in non-brand campaigns from bidding on queries containing your brand name alongside generic modifiers.

One list can contain up to 1,000 brand entries. For most advertisers, a focused list of 20–50 brands — primary competitors plus close category adjacencies — provides meaningful protection without over-restricting reach.

Step 2: Apply URL Containment Settings

URL expansion is the AI Max feature that allows Google to send traffic to pages beyond the specific URLs in your ad assets. It is powerful for finding high-converting landing pages you might have overlooked, but it requires guardrails to prevent traffic from landing on pages that undermine your brand positioning or conflict with other campaigns.

• Inside your AI Max campaign, go to Settings → URL Expansion.
• Choose "Only use URLs from my ads and final URL" if you want the most restrictive containment — this prevents AI Max from expanding to any page not explicitly listed in your asset groups.
• If you prefer partial expansion, select "Use URLs from my website" but then add URL exclusions for any pages you do not want traffic sent to: competitor comparison pages, careers pages, investor relations sections, and any pages with thin content.
• Use the URL exclusion field to block entire subdirectories (e.g., /careers/, /press/, /legal/) with a simple path-based rule.
• If you run separate campaigns for specific product lines, exclude those product URLs from your broader AI Max campaign to prevent internal cannibalization.

Tightening URL expansion does reduce the breadth of automation's reach, but the reduction in wasted spend on irrelevant pages typically outweighs the lost volume for most advertisers in the early configuration phase.

Step 3: Add Negative Keywords at the Right Level

Brand exclusion lists handle known brands, but negative keywords catch everything else — misspellings, generic-plus-brand combinations, and product names that fall below Google's brand indexing threshold. Applying them at the right level in your account is critical.

• Create a negative keyword list in Tools & Settings → Shared Library → Negative Keyword Lists for competitor brand terms and variations not covered by the brand exclusion list.
• Apply campaign-level negatives for broad competitor brand blocking. Apply ad group-level negatives when only specific asset groups within a campaign need protection.
• Use exact match negatives ([competitor brand name]) for terms you are certain should never trigger your ads. Use phrase match negatives ("competitor brand name") for names that commonly appear as part of longer queries.
• Avoid broad match negatives for brand terms — they can over-block and suppress legitimate non-brand traffic that happens to share words with a competitor name.
• Add your own brand terms as negatives in all non-brand AI Max campaigns to enforce clean budget separation between branded and non-branded traffic pools.
• Set a monthly calendar reminder to review the Search Terms report and add new brand-related queries as negatives before they accumulate significant wasted spend.

Step 4: Set Up Competitor Brand Exclusions Strategically

Not every competitor needs the same level of exclusion. A tiered approach lets you block the brands most likely to waste budget while preserving the ability to appear on comparative or review queries where your ads might legitimately convert.

Revisit this tiering every quarter. Competitive landscapes shift, and a brand that was a minor player last year may now warrant full exclusion list treatment if their market presence has grown into your category.

Step 5: Monitor and Audit Your Exclusion Coverage

Configuring exclusions is not a one-time task. AI Max continuously discovers new query patterns, which means gaps in your exclusion coverage will appear over time as search behavior evolves.

• Pull the Search Terms report weekly for the first two months after AI Max activation, filtering for any query containing a competitor brand name or your own brand terms.
• Flag queries that received impressions despite existing exclusions — this indicates either a brand list gap, a misspelling variant, or a new product name that needs adding.
• Cross-reference brand exclusion list coverage by checking whether the triggering term corresponds to a brand entity in Google's index or a free-form text variant. The latter requires a negative keyword; the former may indicate the brand list entry was not saved correctly.
• Use the Auction Insights report to monitor whether competitors are appearing alongside your ads on branded queries — a sign that your exclusions are working but competitors have not applied equivalent controls.
• Set up automated alerts in Google Ads for significant CPC spikes in your AI Max campaign, which can indicate brand term bidding is occurring even when impression-level data is delayed.
• Document every exclusion added with a date and reason — this audit trail is invaluable when troubleshooting attribution anomalies or briefing a new team member on account history.

Common Mistakes to Avoid

Even well-configured AI Max campaigns develop brand exclusion problems over time. These are the errors that practitioners encounter most consistently.

• Applying brand exclusions at the wrong campaign: Adding exclusions to your dedicated brand campaign by mistake will suppress your own branded ads. Double-check which campaign you are editing before saving any brand list.
• Relying on brand lists alone without negative keywords: Brand lists cover indexed brand entities. Product names, abbreviations, and industry-specific acronyms often fall outside Google's brand index and require explicit negative keyword coverage.
• Using broad match negatives for brand terms: This is the most common cause of over-blocking. A broad match negative for a short competitor name can suppress thousands of legitimate non-brand queries that happen to share words with that name.
• Forgetting to update exclusions after competitor rebrands: When a competitor changes their name or launches a new product line, their old brand list entry may no longer cover the new term. Monitor the Search Terms report for unfamiliar brand-adjacent queries.
• Setting URL containment too loosely in high-value campaigns: Leaving URL expansion fully open in campaigns targeting high-intent, high-CPC keywords allows automation to send expensive traffic to low-converting pages. Start restrictive, then relax as you gather data.
• Not separating own-brand negatives by campaign: Adding your brand terms as negatives account-wide rather than at the campaign level will block your dedicated brand campaign from serving. Always apply own-brand negatives at the campaign level only.

Expected Results and Timeline

Brand exclusion configuration typically produces measurable changes within one to two weeks of implementation, though the full impact on performance metrics takes longer to stabilize as Google's learning period adjusts to the new constraints.

• Week 1–2: Immediate reduction in impressions on blocked brand terms. Search Terms report should show competitor brand queries dropping to near zero. Expect a small overall impression volume dip as AI Max recalibrates targeting.
• Week 3–4: CPC stabilization as budget previously spread across low-converting brand queries concentrates on higher-intent non-brand terms. Many practitioners report a noticeable improvement in conversion rate during this phase.
• Month 2: Attribution data becomes cleaner as brand campaign and non-brand campaign traffic pools separate properly. Brand campaign cost-per-conversion should decrease if it was previously absorbing AI Max-driven branded traffic.
• Month 3 onward: Sustainable ROAS improvement as the account operates with proper segmentation. The monthly negative keyword review becomes a maintenance task rather than a fire-fighting exercise.

"Advertisers who implement structured brand exclusion lists alongside URL containment settings consistently report cleaner attribution and more predictable campaign-level ROAS compared to accounts running AI Max without these controls."

Results vary depending on how competitive your category is and how aggressively your competitors bid on brand terms. Highly competitive verticals — insurance, SaaS, finance — typically see faster and more pronounced improvements because brand term waste is proportionally higher in those environments.

Frequently Asked Questions