Performance Max and wasted spend: what to check

What is Performance Max, briefly?

A goal-based campaign type that accesses all of Google's ad inventory from one campaign, using your assets, feeds and conversion goals to decide where and to whom to show ads.

Google describes it as complementing keyword-based Search campaigns, helping advertisers find new ways to generate conversions across channels [1](https://support.google.com/google-ads/answer/10724817).

Why is wasted spend harder to see in Performance Max?

Because a single campaign spans several channels and Google's systems choose placements and audiences automatically, there isn't one simple search terms report covering everything the way there is for Search.

• Reporting is asset- and channel-level rather than keyword-level.
• Search themes (optional signals you provide) influence, but don't strictly control, which searches trigger the campaign.
• It's possible for spend to skew toward one channel (for example, Display or YouTube) without an obvious reason unless you check channel-level reporting.

What can you still check?

Several controls and reports exist specifically to give advertisers visibility and limits inside Performance Max.

Google's guide to search targeting and controls for Performance Max covers keywordless targeting, search themes, negative keywords and brand exclusions as the main levers available [2](https://support.google.com/google-ads/answer/16672776).

• Negative keywords — Performance Max supports account-level negative keywords and, through Google support in some cases, campaign-level exclusions for certain search terms.
• Brand exclusions — to stop the campaign spending on your own brand searches if that's not the goal.
• Final URL expansion settings — whether the campaign is allowed to send traffic to URLs beyond the ones in your asset group.
• Channel and asset-group performance reporting inside the campaign.

A practical check-through

1. Confirm conversion tracking and conversion goals are accurate before judging Performance Max results.
2. Review channel-level reporting to see where budget is actually being spent.
3. Check whether brand exclusions are set the way you intend.
4. Review any available search term or search category insights for patterns that don't fit your business.
5. Compare asset group performance — a weak asset group dragging down results is easier to fix than reworking the whole campaign.

When Performance Max isn't the problem

If conversion tracking is unreliable, a Performance Max campaign can look like it's wasting money when the real issue is what's being measured, not where it's spending.

Limitations of this guide

• Performance Max is automated by design, so some targeting decisions aren't visible or directly controllable the way Search campaign keywords are.

Frequently asked questions

Related guides and tools

• How to find wasted spend in Google Ads — Where money leaks and how to check each place.
• How to audit a Google Ads account — A step-by-step checklist, in business language.
• Is broad match wasting money in your Google Ads account? — How Google Ads broad match works, why it can bring in irrelevant searches, and how to check whether it's wasting money in your account.
• Google Ads getting clicks but no leads — Why ads stop converting and how to find the cause.