Every keyword in a Google Ads campaign comes with a setting that decides which searches can trigger your ad. That setting is called the match type. Get it wrong and you can pay for clicks from people who were never going to buy.
Negative keywords work the other way. They tell Google which searches you do not want to appear for. Used together, match types and negatives give a small business real control over where its ad budget goes.
What a match type actually controls
A keyword is not a promise that your ad will only show for those exact words. Google reads the keyword and decides which searches are a fair fit for it. The match type sets how loose or tight that decision is. Looser settings reach more people, while tighter settings reach fewer people with more precision.
Google currently offers three keyword match types for Search campaigns. They are broad match, phrase match and exact match. According to the Google Ads help page on keyword matching options, broader types capture all the searches a narrower type would, plus more. Picking one is really a choice about reach versus control.
This sits on top of the research you have already done. If you are still building your list, our guide to keywords and their uses covers the basics. Match types only help once the words themselves are sensible. A poor keyword stays a poor keyword under any setting.
Broad match
Broad match is the default. You type the keyword in as it is, with no symbols around it. Google says ads may show on searches that are related to your keyword. That can include searches that do not contain your words at all.
To decide what counts as related, Google may look at other signals. Its help page mentions recent search activity, the content of your landing page and assets and the other keywords in the same ad group. This gives broad match the widest reach of the three. It also gives you the least direct say over each search.
Google is clear that broad match should be paired with Smart Bidding. Its help page says Smart Bidding works best with broad match because the wide set of searches lets it learn what works for you. In practice that means you need conversion tracking set up properly. Without it, the system has nothing reliable to learn from.
Phrase match
Phrase match is written with quotation marks around the keyword, such as “tennis shoes”. Google says ads may show on searches that include the meaning of your keyword. That meaning can be implied, and the search can be more specific than your keyword. Reach sits between broad match and exact match.
For many local businesses this is a comfortable middle ground. A plumber using “blocked drain plumber” in quotes can still appear when someone adds a suburb name. The ad is less likely to show for searches that drift into unrelated topics. You keep a good share of the traffic while cutting some of the noise.
Exact match
Exact match is written with square brackets, such as [red shoe]. Google says ads may show on searches that have the same meaning or the same intent as the keyword. This is not strictly the same words in the same order. Google still allows searches it judges to mean the same thing.
Exact match gives you the most control over who sees your ad. The trade off is that it reaches the fewest searches. It suits your most valuable terms, where you already know the intent is right. It can also help on a tight budget, when wasted clicks hurt the most.
Choosing between them
There is no single right answer for every account. A new campaign with little data often starts tighter, then opens up as results come in. A campaign with solid conversion tracking and Smart Bidding may do well on broad match. The key is to watch what happens rather than set it and forget it.
Google also advises against loading the same idea in several forms. Its help page notes that similar keywords, such as “red car” and “car red”, are not recommended. Only one of them would match a given search anyway. The duplicate with the higher Ad Rank is the one used.
Wherever the click lands, the page has to do its job. Ads cannot fix a page that confuses people, so check it against these website design errors that reduce leads. A clear offer, a visible phone button and a short form make every match type work harder. That is where much of the return is decided.
How negative keywords work
Negative keywords stop your ad from showing on searches that are not relevant. Google’s help page on negative keywords uses an optometrist as an example. An optometrist who sells eyeglasses might add “wine glasses” and “drinking glasses” as negatives. Searches for those terms would then no longer trigger its ads.
Negatives also have match types, and they behave differently from normal keywords. Google explains them with the term “running shoes”. The three behave like this:
- Negative broad match, the default, blocks the ad when the search contains all the negative terms in any order.
- Negative phrase match blocks the ad when the search contains the terms together in the same order, even with extra words.
- Negative exact match blocks the ad only when the search is exactly those terms with no extra words.
There is one detail that catches many advertisers out. Google says negative keywords will not match close variants or other expansions. That means a negative for “running shoes” will not block “running shoe” on its own. You need to add plurals, singulars and synonyms yourself.
Building a sensible negative list
The best source of negatives is the search terms report in your own account. It shows the real searches that triggered your ads. Look for words like “free”, “jobs”, “course” or “DIY” if they do not fit what you sell. Add them as negatives and check again after a week or two.
Be careful not to go too far. Google warns that if you use too many negative keywords, your ads might reach fewer customers. A negative that is too broad can quietly block good searches along with the bad ones. Review your list every few months, just as you review your keywords.
Paid search and organic search often support each other. The search terms you find in Google Ads can show you what people really type. That is useful when you work on overlooked SEO ranking factors for your pages. Over time the two channels can share what they learn.
A simple routine for small accounts
You do not need hours each week to keep match types and negatives in good order. Start with a short list of keywords in phrase or exact match. Check the search terms report each week for the first month. Add negatives for anything clearly off topic.
Once you have a steady flow of conversions, you can test broad match with Smart Bidding on part of the account. Compare cost per lead before and after. If you want a refresher on why paid search is worth the effort, read about the advantages of using AdWords marketing. Small, regular checks usually beat large changes made once a year.
Frequently asked questions
Which match type should a new campaign use?
Many new campaigns start with phrase or exact match to keep spend focused. Broad match tends to suit accounts with good conversion tracking and Smart Bidding. Watch the search terms report and adjust as you learn.
Does exact match only show for the exact words?
No. Google says exact match can show on searches with the same meaning or intent as the keyword. It is the tightest option, but it is not a strict word for word match.
Do negative keywords block plurals and misspellings?
Google says negatives do not match close variants, so plurals and synonyms need adding separately. Google notes that it handles casing and misspellings automatically. Check your search terms report to see what still slips through.
Can too many negative keywords hurt a campaign?
Yes. Google warns that too many negatives can mean your ads reach fewer customers. Keep the list focused on searches that are clearly wrong for your business.