2026-07-17

How to Find Wasted Ad Spend in Google Ads: A 15-Minute Checklist

Every Google Ads account bleeds money somewhere. The question isn't whether there's waste — it's whether you find it before the client's finance person does. This checklist takes about 15 minutes per account and catches the three leaks that eat the most budget silently: dead campaigns, overlapping audiences, and broad-match spend with no guardrails.

Step 1: Hunt Down Zero-Conversion Campaigns

Pull the last 30 days of campaign-level data and sort by cost. Anything with meaningful spend and zero conversions is your first red flag. A campaign that spent $30 with no conversions isn't a crisis — that's normal variance. But a campaign that spent $400 with zero conversions over 30 days is a decision waiting to happen: pause it, restructure it, or defend it with a clear reason (brand awareness, top-of-funnel, testing).

• Sort campaigns by spend, descending
• Flag anything with cost above your average customer acquisition cost and zero conversions
• Check conversion tracking is actually firing before you blame the campaign
• Note campaigns with conversions but at a cost-per-conversion 2-3x higher than the account average

Don't just look at last 30 days in isolation — a campaign that converted well last quarter but has gone cold might be an audience fatigue issue, not a strategy failure.

Step 2: Check for Audience Overlap

Overlapping audiences across ad groups or campaigns mean you're bidding against yourself. If a remarketing audience and an in-market audience both target the same user, you're paying twice for one impression opportunity, and Google's auction just favors whichever ad group happens to win that moment — not necessarily the one you'd choose.

Run the Audience Overlap report (in the Audiences section under Google Ads' shared library, or manually cross-reference audience lists across active campaigns). Look for:

• The same remarketing list applied to more than one active campaign targeting the same funnel stage
• Similar or lookalike audiences stacked on top of an already-converting core audience
• Broad "in-market" categories running alongside narrow custom-intent audiences with no exclusions between them

The fix is usually exclusions, not deletion — exclude the remarketing list from the top-of-funnel campaign, or vice versa, so each campaign owns a distinct slice of the funnel.

Step 3: Find Broad-Match Leaks

Broad match can work, but only with tight negative keyword lists and consistent monitoring. Without that, it's the single fastest way to burn budget on searches that have nothing to do with the client's product.

Pull the search terms report for any broad-match campaign and filter for terms with clicks but no conversions. If you see a cluster of irrelevant terms — different product category, wrong intent (informational vs. transactional), competitor names you don't want to bid on, or "free" and "jobs" style modifiers — that's spend you can cut today with a negative keyword list.

• Filter search terms by cost, descending, with zero conversions
• Check for mismatched intent (someone searching "how to" landing on a purchase-intent ad)
• Look for repeat offenders — the same irrelevant term showing up week after week means your negative list isn't being updated

Turning This Into a Habit, Not a Fire Drill

The hard part isn't running this checklist once — it's running it consistently across every client account, every week, without it eating your whole afternoon. Manually cross-referencing campaign exports, overlap reports, and search term data for ten accounts adds up fast, and it's easy to let it slide until a client asks the uncomfortable question first.

This is exactly the gap Next Action Analyst is built for: you export the CSV, and it flags the zero-conversion campaigns, overlap risks, and broad-match leaks automatically, so the 15-minute checklist becomes a 2-minute review with a clear list of what to fix next.