Negative Keywords in Google Ads: How to Find and Stop Wasted Spend
Negative keywords stop your ads appearing for searches that are unlikely to produce useful commercial outcomes.
They are one of the simplest ideas in Google Ads and one of the easiest areas to neglect.
The problem is not that every irrelevant click is expensive. The problem is that repeated low-quality search terms quietly consume budget, distort account learning and make performance look weaker than the underlying commercial demand actually is.
Start with the search terms report
Keywords are what you choose to target. Search terms are what people actually typed.
That distinction matters. The search terms report is where you find unexpected intent, irrelevant jobs, free searches, educational queries, wrong locations, consumer searches against B2B campaigns and other demand that does not fit the offer.
A good negative-keyword process starts there.
Common negative-keyword categories
Depending on the business, useful exclusions can include:
- jobs, careers and salary searches
- free, template and download intent
- wrong countries or locations
- DIY or how-to queries when the advertiser sells a done-for-you service
- consumer searches for a B2B-only product
- unrelated product variants
- research terms with no plausible buying path
The exact list should come from account evidence, not from blindly copying a generic negative-keyword list.
Why over-blocking is also dangerous
Negative keywords can save money, but they can also remove valuable demand if they are applied too broadly.
For example, an informational-looking search can sometimes sit near the beginning of a high-value buying journey. The decision should reflect the product, sales cycle and conversion data rather than a simple rule that all informational terms are bad.
That is why negatives should be reviewed in context with conversion performance and landing-page intent.
Negative keywords and cost per conversion
A stronger negative-keyword framework can improve efficiency in several ways:
- fewer irrelevant clicks
- more budget available for commercial terms
- cleaner conversion data
- better ability to judge which keywords deserve more spend
It can contribute to lower CPC or CPA, but those results depend on the account and market. Digital Womble publishes dated Google Ads performance examples so the evidence is bounded to specific periods rather than presented as a guarantee.
How often should search terms be reviewed?
Active accounts should be reviewed frequently enough to catch poor-fit demand before it becomes material spend.
The right frequency depends on traffic volume. A small account may not need daily intervention, while a high-spend account can accumulate enough data to justify much more frequent checks.
Digital Womble's Google Ads management approach includes regular search-term review and negative-keyword control as a core part of the process.
Audit the account before changing it
If you suspect your account is paying for poor search intent, do not start by adding hundreds of negatives without context.
First establish which queries are consuming spend, which campaigns they belong to, what converted and what the landing pages were designed to sell.
The Google Ads Account Review is read-only and specifically examines search-term quality and negative-keyword opportunities before any implementation is proposed.
The practical rule
Negative keywords should remove clearly poor-fit demand while preserving plausible buyer intent.
That sounds simple. In practice, it requires regular review and commercial judgement.
If you want an independent view of where your account is leaking spend, book the £395 Google Ads Account Review.