You check your Google Ads account and the numbers look active. Clicks are coming in. The budget is spending every day like it's supposed to. But the phone isn't ringing any more than it was last month, and the leads that do show up don't seem to want what you sell. You're paying for traffic, just not traffic that turns into customers.
A real chunk of that spend is probably going to searches that have nothing to do with your business. Not because you chose the wrong keywords, but because of how Google decides which searches your keywords get shown for. The word you typed into your ad account and the exact phrase a stranger typed into Google are two different things, and the gap between them is where a lot of small business ad budgets quietly leak out.
The Keyword You Picked Isn't the Only Thing You're Paying For
When you set up a Google Ads campaign, you choose keywords: words or phrases you think describe what a customer searching for your product or service would type. But Google doesn't only show your ad for that exact phrase. Depending on the match type you selected, Google will also show your ad for searches it decides are "related," even if the wording is nothing alike.
This is most aggressive under broad match. Broad match is the default in Smart Bidding campaigns, and close variant matching now sweeps in synonyms Google considers related. That means a keyword you picked because it describes exactly what you sell can trigger your ad for a search that only loosely resembles it, sometimes barely at all.
Say you refinish furniture and you're bidding on "antique dresser restoration." Under a loose match setting, that keyword can also surface your ad for someone searching for how to strip paint themselves, someone researching restoration as a hobby, or someone looking for a job at a furniture shop. None of those people are about to hire you, but if they click, you pay for it the same as you'd pay for a click from someone ready to book.
The Report That Shows You What People Typed
Inside Google Ads there's a feature most small business owners running their own campaigns almost never open: the search terms report. It's separate from your keyword list. Your keyword list shows what you told Google to target. The search terms report shows the actual words a person typed before your ad appeared and they clicked.
For wasted spend, this is the most useful diagnostic tool in a Google Ads account. It's the only place that shows the gap between the keyword you chose and what Google matched it to.
Seer Interactive mined millions of data points across 30 paid search accounts and found that, on average, companies were wasting 15% of their budget on irrelevant keywords.
Other agency audits put the waste higher, sometimes at a third or more of spend. Those are individual agency estimates, not a controlled study, and the range varies by industry and account management.
Why This Isn't a One-Time Fix
Once you find search terms that have nothing to do with your business showing up in that report, you can add them as negative keywords. A negative keyword tells Google, explicitly, not to show your ad for that search, no matter how closely it thinks the terms are related. It's the direct opposite of a regular keyword: instead of saying "show my ad for this," you're saying "never show my ad for this."
The problem is that this isn't something you set up once and forget. Google's matching logic keeps expanding, testing new variations against your keywords over time, which means new irrelevant searches can start triggering your ad months after you thought you'd cleaned things up. An account that had a clean search terms report in January can have new leaks by summer if nobody's checking it.
That's part of why campaigns that looked fine at launch quietly drift. The fix isn't more budget, it's routine review: pulling the search terms report on a regular cadence, checking which searches are eating spend without producing a lead or a sale, and adding those as negatives before they compound. An account that hasn't had its negative keyword list touched in months is very likely paying for traffic it doesn't want, even if the topline numbers still look busy.
Match Type Is a Choice, Not a Default You Have to Accept
Negative keywords are one lever. Match type is the other. Broad match can surface valuable traffic you'd never have thought to bid on directly, but it can also surface traffic that has almost nothing to do with your business. Tighter match types (phrase match or exact match) give you more control over exactly which searches you'll pay for, at the cost of potentially missing some searches you didn't anticipate.
Neither setting is universally correct. The right choice depends on how much conversion data your account has, how closely you're willing to monitor the search terms report, and how much risk you're comfortable carrying while Google's system figures out what "related" means for your business. What matters is knowing that this is a choice you're making, actively or by default, rather than a fixed cost of running search ads.
If you're running Google Ads on your own and haven't opened the search terms report in a while, that's the first place to look before assuming your budget is simply too small or your industry too competitive. Sometimes the money is there; it's just going to the wrong searches.
Key Takeaways
- The keyword you choose in Google Ads and the actual search a person types are two different things, and Google's matching settings decide how far apart they're allowed to drift.
- The search terms report shows the real words people typed before clicking your ad, which helps you find budget going to searches unrelated to your business.
- Negative keywords tell Google explicitly not to show your ad for a given search, and they need regular review, not a one-time setup, because Google's matching keeps expanding over time.
- Broad match can surface valuable traffic you wouldn't have targeted directly, but it also surfaces irrelevant traffic, and choosing a tighter match type is a legitimate way to trade reach for control.
If your ad spend is going out the door faster than customers are coming in, it's worth having someone look at where the clicks are coming from before you cut the budget or the campaign entirely. Mindstate Strategy's paid ads work includes exactly this kind of account review, and you can get in touch to have your current campaigns looked at.
