The Wasted Spend Checklist I Run on Every New Account
This is for anyone inheriting a Google Ads account. New client, new job, new agency handoff, doesn't matter. The single most important decision is whether you audit search terms first or campaign structure first. Get that order wrong and you'll waste two hours reorganizing a house that's on fire.
Decide this first
Search terms before structure. Always.
I've seen people open an account and immediately start restructuring campaigns, fixing naming conventions, cleaning up ad groups. That's satisfying work. It's also backwards. You need to know where the money is actually going before you decide how to organize anything.
On a DTC brand I ran from $100K to $3M in revenue, I once inherited an account spending $40K a month. Before touching structure, I pulled the search terms report. 22% of spend was going to queries that had nothing to do with the product. That number tells you everything about what to fix first.
So the rule: pull the search terms report before you do anything else. It tells you whether you have a targeting problem, a bidding problem, or a structure problem. Everything downstream depends on that answer.
What to look for
Search terms report, last 90 days
Sort by cost, descending. Look at the top 50 terms by spend. Ask one question for each: would this person actually buy from us? You'll usually find a chunk of spend on terms that are close enough to trigger the ad but wrong enough to never convert. Brand name misspellings from competitors, generic informational queries, job seekers searching "company name careers." I've seen accounts where 15-30% of spend sits in this bucket. That's the number to benchmark against. Above 15%, you have a real problem.
Match type mix
Check the ratio of broad, phrase, and exact match spend. If more than 60% of spend is on broad match with no strong negative list underneath it, that's a wasted spend engine running on autopilot. Broad match isn't bad. Broad match with no negatives and no oversight is how accounts bleed money quietly for months.
Device and location breakdown
Pull performance by device. I still find accounts spending 30-40% of budget on mobile with a conversion rate a third of desktop, and nobody has touched the bid adjustment in a year. Same with location. On the infrastructure project I marketed, a $2.2B build with a $10M marketing budget, we found 18% of digital spend was serving impressions outside the actual project's geographic radius of influence. Nobody had set a location restriction. It defaulted to "people in, or who show interest in, this location," which is far looser than most people realize.
Quality Score and CTR by ad group
Low Quality Score isn't a vanity metric here, it's a proxy for relevance. Ad groups with Quality Score under 5 are usually ad groups where the keyword, ad copy, and landing page don't match each other. That mismatch costs you in CPC and in wasted clicks that bounce immediately. Sort ad groups by spend, then check Quality Score on the top 10. That's usually enough to find the worst offenders.
Conversion tracking accuracy
Before you trust any performance number in the account, verify the conversion tracking is actually correct. I've walked into accounts where "purchase" conversions included newsletter signups, or where the same purchase fired twice due to a tagging error. If your data is wrong, every optimization you make afterward is built on sand. Check this before you check anything else, honestly, but I put it fourth here because most people skip search terms entirely and I want that fixed first.
Automated bidding history
If the account is on Target CPA or Target ROAS, check when the target was last changed and what the account's conversion volume looked like at the time. Smart Bidding needs roughly 30-50 conversions a month per campaign to work with reasonable stability. Below that, targets get set on noisy data and the algorithm chases ghosts. I've seen campaigns with 8 conversions a month running Target ROAS strategies built for accounts ten times their size.
Overlapping campaigns and keywords
Pull the Auction Insights report at the campaign level. If you see your own account showing up as a competitor to itself, you have overlapping campaigns bidding against each other. This is common after agency handoffs where nobody cleaned up the old structure before building new campaigns on top.
What to ignore
Ignore audience overlays that were added out of habit rather than strategy. In-market audiences, affinity audiences, life event audiences stacked on top of search campaigns with no clear reason. They rarely move the needle on search and rarely explain wasted spend. Don't spend audit time here.
Ignore ad extensions completeness as a wasted spend signal. Missing sitelinks or callouts affect CTR marginally. They are not where the real money leaks are. Fix them later, during optimization, not during the audit.
Ignore account-level "Optimization Score." Google built this number to encourage you to accept its suggestions, many of which increase spend or loosen targeting. A high Optimization Score is not correlated with an efficient account. I've seen 95% Optimization Score accounts bleeding money and 60% score accounts running tight and profitable. Don't let a client or boss chase this number. It's a distraction dressed up as a metric.
Common mistakes
The most common mistake is treating impressions and clicks as proof of health. An account can have rising clicks, rising impressions, even a stable CTR, and still be wasting a third of its budget on the wrong queries. Volume metrics feel good in a screenshot and tell you nothing about whether the money was spent well. I've sat in meetings where a marketing director pointed at a 40% increase in clicks as a win, while cost per actual qualified lead had gone up 60% over the same period. Nobody had checked.
The second mistake is auditing on too short a window. Seven days of data will show you noise, not patterns. Fourteen days is barely better. You need 60-90 days minimum to see real search term patterns, especially for anything with a sales cycle longer than a single visit. Short windows lead to overreacting to a bad week or underreacting to a slow bleed.
The third mistake, and the one I see most in handoffs, is inheriting someone else's negative keyword list without checking if it's still relevant. Negative lists built two years ago for a different product line, a different season, or a different promotion get carried forward and nobody revisits them. They can block traffic you now actually want, or fail to block new junk traffic that's shown up since. Treat the negative list as something to audit, not something to trust because it exists.
FAQ
How long should a wasted spend audit take?
For an account under $50K a month in spend, budget two to three hours for a first pass using the checklist above. Larger accounts with more campaigns take longer, but the process doesn't change, you're just repeating it across more segments. If it's taking you a full day, you're probably going too deep on structure before you've finished the diagnostic pass.
What percentage of wasted spend is normal in a Google Ads account?
In my experience, a well-maintained account runs 5-10% wasted spend as a baseline, mostly unavoidable noise from broad match and audience expansion. Anything above 20% means the account hasn't been actively managed in a while. Above 30% usually means nobody has looked at the search terms report in over six months.
Should I pause everything I find wasteful immediately?
No. Flag it, document it, then make changes in a controlled order, usually negatives first, then bid adjustments, then structural changes. Pausing everything at once makes it impossible to know which change actually improved performance, and it can tank an account's learning phase if it's on automated bidding.
Run this checklist in order, on paper or in a spreadsheet, every single time you open a new account. Search terms first, structure last. The waste is almost always visible within the first hour if you know exactly where to look.