Every Google Ads account pays for some searches it did not want. A driving school pays for “driving licence test questions”. A wedding photographer pays for “wedding photography course”. A home tutor pays for “tutor jobs near me”. Each click looks small, but they add up, and they push out the budget meant for people who would actually book.
Negative keywords are how you tell Google which searches to leave out. This post covers why negative keywords in Google Ads matter so much for a small account, how to build a negative keyword list before launch, how negatives match differently from normal keywords, and how shared lists keep the job manageable.
Why negatives do more work in a small account
A large advertiser can absorb some irrelevant clicks. A small one cannot. When the daily budget only covers a modest number of clicks, every wasted one is a click a real customer did not get.
There is also a quieter cost. Irrelevant clicks rarely convert, so they make your keywords, ads and landing pages look worse than they are. If you use automated bidding, they also feed it poor signals. Cleaning out the wrong searches makes every other number in the account easier to trust.
Building a starting negative keyword list
You do not have to wait for wasted clicks to start. Most businesses can predict a good share of the wrong searches before the first ad runs. Think through the groups of people who might type words close to yours but want something else:
- People looking for work. Jobs, vacancy, hiring, salary, recruitment, internship.
- People wanting to learn the skill. Course, training, certification, institute, syllabus, tutorial.
- People wanting to do it themselves. DIY, how to, at home, kit, video.
- People wanting it without paying. Free, sample, template, download, if you do not offer those.
- People wanting something adjacent. Products you do not stock, services you do not offer, brands you do not repair.
- People in the wrong place. Towns and districts you do not serve, which location settings do not always catch.
Read each word against your own business before adding it. “Free” is a sensible negative for a lawyer but wrong for a clinic that genuinely offers a free first consultation. “Course” blocks job seekers for a plumber but blocks customers for a coaching centre.
Examples by type of business
| Business | Likely negatives | Words to keep |
|---|---|---|
| Dental clinic | assistant, college, BDS, salary, home remedy | emergency, near me, painless |
| Home tutor | jobs, part time, become a tutor, earn | class 10, board, online |
| AC repair | buy, price list of AC, second hand, technician course | service, gas refill, not cooling |
| Boutique | stitching course, wholesale, pattern, sewing machine | designer, blouse, boutique near |
Treat these as starting ideas. Your own search terms will add many more.
How negative keywords in Google Ads match
This is the part that surprises people. Normal keywords now stretch to close variants such as plurals, misspellings and similar meanings. Negative keywords do not. A negative only blocks what you actually wrote, according to its own match type. So if you block “job”, you may still pay for “jobs” unless you add both.
Negatives come in the same three types, but they behave differently:
| Negative type | Written as | Blocks a search when |
|---|---|---|
| Negative broad | repair course | All the words appear somewhere in the search, in any order |
| Negative phrase | “repair course” | The exact words appear together in that order, even with others around them |
| Negative exact | [repair course] | The search is exactly those words and nothing more |
For single words such as “jobs” or “free”, negative broad is the usual choice, because the word only needs to appear once anywhere in the search. Use negative phrase when the order matters, for example blocking “used car” without blocking “car used for”. Use negative exact sparingly, when one precise search is wrong but longer versions are good.
Our post on how keyword match types work covers the positive side of the same settings.
Adding negatives from what actually happened
A starting list catches the obvious. The rest comes from the real searches your ads appeared for. The search terms report shows them, and adding a negative straight from that report is usually a couple of clicks.
When you add one, ask whether to block the full search or just the word that made it wrong. Blocking “ac repair course in kolkata” as an exact negative stops one search. Blocking the single word “course” stops that search and every future one like it. The second is usually more useful, as long as the word is never part of a good search for you.
Levels: ad group, campaign and shared lists
You can add negatives in different places, and the place decides how widely they apply.
- Ad group level blocks a search only for that ad group. It is useful for steering, for example stopping your general ad group from taking searches that belong to a more specific one.
- Campaign level blocks the search for every ad group in that campaign.
- Shared negative keyword lists are lists you build once and apply to several campaigns. A “jobs and training” list and a “places we do not serve” list can be attached to every Search campaign you run.
- Account level negatives are available in many accounts and apply across eligible campaign types, which helps when automated campaigns do not offer the usual keyword controls.
For most small businesses, two or three shared lists plus a few ad group negatives cover nearly everything. Name the lists plainly so anyone else working on the account understands what each one is for.
When a negative blocks searches you wanted
Over-blocking is the opposite mistake, and it is harder to notice because it shows up as nothing happening. A few patterns cause it:
- Very short or common words. Blocking “near” or “best” can stop a lot of good local searches.
- A negative that matches one of your own keywords. Google may show a warning about conflicting negatives. Read it and fix the clash.
- A shared list applied where it does not fit. A list that blocks “course” is right for a repair campaign and wrong for a training campaign in the same account.
- Old negatives that outlived their reason. If you once blocked a service you did not offer and now do, remove it.
Review your lists every few months with fresh eyes. It takes a short while and often finds one or two that should go.
Keeping the habit going
Negatives are not a one-time setup. New searches appear as seasons change, as Google adjusts matching, and as you add services. A weekly look at new search terms early on, slowing to a regular check once the account settles, keeps the list current. Our beginner’s guide to Google Ads shows where this fits in a normal weekly routine.
Frequently asked questions
How many negative keywords should a small account have?
There is no correct number. A narrow local service may need only a short starting list and then a steady trickle from search terms. A business whose words overlap with jobs, courses or products may need far more. Judge the list by the search terms report: if irrelevant searches keep appearing, the list is not finished.
Can I use negative keywords in Performance Max campaigns?
Performance Max does not offer the usual campaign negative keyword box in the same way Search does. Google has added some ways to exclude searches, such as account level negatives and brand exclusions, and the options have been changing. Check the current settings in your account rather than relying on an older guide.
Do negative keywords stop my ad showing to people searching for competitors?
Only if you add the competitor names as negatives. If you do not bid on competitor names and do not want to appear for them, adding those names as negative broad keywords helps, because broad and phrase keywords can match competitor searches. Some businesses choose to appear for them, which is a separate decision with its own trade-offs.
Building and maintaining negative lists is a routine part of how we run accounts in our Google Ads management service, though you can do it well yourself with a regular hour. For the other channels a small business might use alongside paid search, see our online marketing services overview.
Next in this series: Google Ads Search Terms Report: How to Read It
