Google Ads Mistakes That Waste Budget: 9 Fixes for Indian Businesses
Nine common Google Ads mistakes that quietly waste budget, with practical fixes and a weekly routine you can start this week.
In this article
- What negative keywords do
- Find negative keyword ideas in the search terms report
- Common negative keywords to consider first
- Negative keyword match types explained
- Negative keyword lists and where to apply them
- Avoid blocking your own keywords
- Make negative keywords a routine
- Frequently asked questions
- Conclusion
Key takeaways
- A negative keyword tells Google not to show your ad for searches that contain it.
- Negative keywords have their own match type rules, and they do not behave like normal keywords. Check the current documentation.
- Build your list from the search terms report, not from guesses alone.
- Use shared lists for common blocks and campaign-level negatives to separate campaigns from each other.
Every Google Ads account pays for some clicks it should never have bought. Someone searching for "free school logo" clicks the ad of a web design company, or a person looking for a job at a clinic clicks an appointment ad. Negative keywords in Google Ads are the main tool for stopping this.
They are easy to understand but easy to misuse. Add too few and you pay for irrelevant clicks. Add the wrong ones, or use the wrong match type, and you block customers you wanted. This guide explains how negative keywords work, which ones to add first and how to keep your lists tidy.
What negative keywords do
A negative keyword is a word or phrase you add to say "do not show my ad when a search contains this". If you sell premium tutoring and add "free" as a negative, your ads should not appear for "free maths tuition".
They matter for two reasons. First, they cut spend on clicks that were never going to convert. Second, they raise the share of relevant clicks, which makes results easier to read. A cleaner account also gives automated bidding better data to learn from.
Find negative keyword ideas in the search terms report
The most reliable source of negatives is your own data. In Google Ads, open the search terms report for a campaign and look at the actual searches that triggered your ads over the last few weeks. Sort by cost or clicks, and look for patterns rather than single odd searches.
- Filter for spend without results. Look at searches with clicks and cost but no conversions.
- Mark the reason. Was it a job search, a free-seeker, a student, a different product or a different city?
- Pick the smallest word that explains it. "Jobs" can block a whole group of searches, while a long phrase blocks only one.
- Check it against your business. Ask whether any paying customer could plausibly use that word.
- Add it at the right level. Ad group, campaign or shared list, as described below.
This works best when conversions are tracked properly, so you can tell a wasted search from a good one. If tracking is shaky, read our conversion tracking basics first.
Common negative keywords to consider first
These groups often bring clicks that do not convert, but always check each against your own offer.
| Group | Example words | Check before adding |
|---|---|---|
| Job seekers | jobs, vacancy, salary, career, walk-in | Fine unless you also recruit through ads |
| Free-seekers | free, cheap, sample, download | Not if you offer a free consultation or demo |
| Learning | course, tutorial, training, pdf, how to | Not if you sell training or courses |
| DIY and info | diy, meaning, definition, wiki | Usually safe for service businesses |
| Wrong product | used, second hand, repair, spare parts | Depends on what you sell |
| Wrong place | city or area names you do not serve | Combine with location targeting |
Warning: Never paste a long generic negative list from the internet into your account. A word that is irrelevant for one business can be your best customer for another. For example, "repair" is a negative for a shop selling new phones, but a core keyword for a repair centre.
Negative keyword match types explained
Negative keywords have three match types: broad, phrase and exact. They differ from the match types for your normal keywords, so do not assume they behave the same way.
| Match type | How you write it | Effect in general terms |
|---|---|---|
| Negative broad | free tuition | Blocks searches that contain all the words, in any order, possibly with other words |
| Negative phrase | "free tuition" | Blocks searches containing the words in that order, possibly with other words around them |
| Negative exact | [free tuition] | Blocks only that exact search with no extra words |
Two points catch people out. A broad negative needs every word of the negative to appear, so adding "free tuition" as broad does not block "free classes". And negative keywords generally do not apply to close variants such as plurals or misspellings, so you may need to add those forms yourself. Google updates how matching works from time to time, so check the current documentation on negative keywords before relying on these notes.
Example: A tuition centre in Chennai wants to avoid "free" searches. Adding the single word free as a broad negative blocks any search containing it. Adding the phrase "free demo class" blocks only searches that include that wording, which is safer if some visitors who search "free demo class" are actually your target. Choose by what you want to protect.
Negative keyword lists and where to apply them
You can add negative keywords at the ad group level, the campaign level, or in a shared negative keyword list that you attach to several campaigns. The right place depends on the job:
- Shared list for universal blocks. Words like jobs, free or unrelated topics that apply to all your campaigns.
- Campaign-level negatives. Words that separate one campaign from another, such as keeping a "Class 11 admissions" campaign away from "Class 1 admissions" searches.
- Ad group-level negatives. Used to steer a search to the ad group that matches it best.
Newer campaign types may offer different negative keyword options and limits. For example, Performance Max now has its own settings for negatives and brand exclusions, and the availability and limits can change, so check the current documentation. We explain the wider picture in our Performance Max basics article.
Avoid blocking your own keywords
If a negative matches one of your own keywords, that keyword may stop showing. This usually happens when someone adds a broad negative in a hurry. For instance, adding "course" as a negative would hurt a school that advertises "diploma course admission".
- Before adding a negative, search your keyword list for the same word.
- Check the account for negatives that conflict with live keywords. Google Ads has tools and recommendations that can flag some conflicts, so look in the current interface.
- Keep a note of why each negative was added, especially wide ones.
- After adding a batch, watch impressions for your best keywords for a few days.
Make negative keywords a routine
In the first four to six weeks of a new campaign, review search terms two or three times a week if budget allows, then settle into a weekly check. After the account matures, a monthly review is usually enough, unless you have added new keywords or broader match types.
When you launch a new campaign in a region such as Tamil Nadu, remember that people search in a mix of English, Tamil and transliterated Tamil. Look at your search terms for local spellings and add negatives in those forms too. Our Google Ads management team builds and maintains negative lists as part of regular reviews, and you can see how we think about wasted spend in common Google Ads mistakes.
Frequently asked questions
How many negative keywords should I add?
There is no ideal number. Add the ones that your search terms report shows are irrelevant, and no more. A small, accurate list is better than a huge copied one. Google Ads has limits on how many negatives an account can hold, so check the current documentation if you are managing large lists.
Do negative keywords work in Performance Max campaigns?
Performance Max has supported negative keyword options, and brand exclusions are also available, but the exact controls and limits have changed over time. Check the current Google Ads documentation for what your account offers, and review the search terms insights it provides.
Can negative keywords hurt my campaign?
Yes, if they are too broad or conflict with your own keywords. A negative can quietly cut off good traffic. Review them carefully, add them in small batches and watch impressions after changes.
What is the difference between a negative keyword and a normal keyword?
A normal keyword tells Google which searches you want to appear for. A negative keyword tells it which searches to avoid. Negatives also have their own matching rules, and they generally do not extend to close variants the way normal keywords can.
Conclusion
Negative keywords are a steady, low-cost way to improve an account. Start with your search terms report, add negatives carefully with the right match type, and review them on a schedule. If you would like help cleaning up an existing account, get in touch with our team.
Related services: Google Ads Management Google Analytics 4
