How Much of Your Google Ads Budget Goes to Searches That Never Buy
Between 8 and 20 % of a typical Google Ads budget goes to searches that never had buying intent — job seekers, DIY researchers, people looking for a free version.
It hides because it is spread across dozens of small terms, none of which ever crosses a spend threshold on its own. The fix is to judge terms by intent rather than by accumulated cost, and to check for conversions in the last 90 days before excluding anything.
Where the money actually goes
Most accounts do not leak through one catastrophic keyword. They leak through forty small ones, each costing eight or twelve euros a month, none of them large enough to show up in a weekly review.
The pattern is always the same shape: a broad or phrase keyword matches a query that shares vocabulary with your offer but nothing else. Emergency plumber and plumber salary share a word. One is a customer at 2am. The other is a teenager choosing a career.
The three families that account for most of it
- Job seekers — salary, jobs, apprenticeship, training course. They click, they read, they leave. They never convert, and they never will.
- DIY intent — how to, yourself, tutorial, free guide. Someone about to do it themselves is the opposite of someone about to pay you.
- Research without intent — what is, definition, vs, reviews of. Sometimes valuable in long sales cycles, almost never in local services.
Why waiting for a spend threshold costs you
A term that has spent 4 € and converted zero times is not statistically meaningful. That is true, and it is the reason most tools wait until 50 € or 100 € before flagging anything.
The problem is that the threshold is per term. Forty terms at 4 € each is 160 € — and not one of them ever crosses the line. The waste is real, it is measurable in aggregate, and a per-term threshold is structurally incapable of seeing it.
The waste that hurts is not the one big term. It is the forty small ones that never trip a threshold.
What replaces the threshold is intent. Plumber salary does not need five clicks to prove it will never convert — the query says so. That is a judgement about meaning, not about statistics, and it is the reason this problem was hard before language models and is tractable now.
What to block on the first click, and what to wait on
Not every irrelevant term deserves the same treatment. Two regimes:
Block immediately when the query itself proves the intent is wrong. Free, salary, jobs, how to do it yourself. No amount of data will change what those words mean. Waiting is just paying to confirm something you already know.
Wait for proof when the query is merely suspicious. A competitor name, an adjacent product, a location you might serve one day. Five clicks and zero conversions is a reasonable bar. Under that, you are guessing.
The one check that prevents the expensive mistake
Before excluding anything, look at the last 90 days for a conversion on that exact term. One conversion means keep it, whatever the intent looks like. This single rule is what separates a cleanup from an outage.
How to size the leak before you touch anything
Pull the search terms report for the last 60 days. Filter to terms with zero conversions. Sort by cost, descending. Read the first forty.
You will recognise the families above within about two minutes. Add up the cost column for the ones that are obviously wrong — that number, annualised, is what the leak costs you. In the accounts we see, it lands between 8 and 20 % of spend.
That is the number worth acting on. Not because it is dramatic, but because it is entirely recoverable and it recurs every single month until someone stops it.
Frequently asked
How much wasted ad spend is normal in a Google Ads account?
In accounts we audit, irrelevant search terms typically account for 8 to 20 % of spend. The figure is higher in accounts running broad match or Performance Max without negative keyword maintenance, and lower in tightly managed exact-match accounts.
Should I wait until a search term has spent money before excluding it?
It depends on the term. When the query itself proves the intent is wrong — 'salary', 'jobs', 'free', 'how to do it yourself' — no amount of data will change what those words mean, so waiting only costs money. When the term is merely suspicious, five clicks with zero conversions is a reasonable bar.
Can excluding search terms hurt my campaigns?
Yes, if you exclude a term that converts. Always check the last 90 days for conversions on the exact term before excluding it, and prefer exact negatives over phrase negatives — a phrase negative blocks every query containing those words, including ones you never reviewed.
Does this apply to Performance Max and Shopping campaigns?
Yes. Both report the search terms they paid for, and both accept negative keywords. Performance Max uses campaign-level negatives with a limit of 10,000 per campaign; Shopping accepts shared negative keyword lists, like Search.
Clean your search terms. Save time and money.
Every night, PPCleaner reviews the searches your campaigns actually paid for, groups them by intent, and excludes the ones that never convert. No spend threshold to wait for, nothing touched but negatives — and one click undoes any of it.
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