Keyword Match Types in Google Ads: Broad, Phrase and Exact, Tested on a Plumber's Searches

Three match types, and the symbols that set them

A keyword is not the search. It is an instruction about which searches you are willing to pay for, and the match type tells Google how loosely to read that instruction. Google's help page on keyword matching options describes three settings, each a trade between reach and control.

Note the first row. Broad match is the default, so a keyword pasted into an ad group with no symbols is a broad match keyword whether you meant it or not. Google also says broad matching can draw on the searcher's recent searches, the content of your landing page and the other keywords in the ad group. That is useful when the account knows what a customer looks like. It is expensive when it does not.

Every match type sits on top of the same auction. Match types decide whether you enter it; your bid, your ad and your page decide what happens next. The Google Ads hub explains that auction, and cost per click explains what you pay once you win it.

One plumber's keyword, read three ways

Take a plumbing company that wants water heater repair jobs. The table shows the kinds of searches each version of the keyword could match. It is an illustration built from Google's definitions, not a promise: Google decides each match in the moment, and the search terms report is the only record of what actually happened.

Two rows deserve a second look. The do-it-yourself search slips through phrase match because it contains the keyword's meaning, so phrase match alone does not keep a plumber away from people who want to fix it themselves. The job seeker can slip through phrase and broad alike. Both are fixed with negative keywords, not with a tighter match type. A plumber's wider marketing, beyond the ad account, is on the marketing for plumbers page.

Close variants: exact match has not meant exact for years

The square brackets suggest a literal string. Google's definition of close variants says otherwise. Every match type can match searches that are similar but not identical to the keyword, and Google states there is no way to opt out. For exact match, close variants include:

• Spelling and word form: misspellings, singular and plural, stems such as floor and flooring, abbreviations and accents.
• Reordered words with the same meaning: Google's example is [shoes mens] matching mens shoes.
• Added or dropped function words: for, in, to and the like.
• Implied words: a search can leave out a word the keyword spells out, if the meaning holds.
• Synonyms and paraphrases: Google's example is [bathing suits] showing on swimming suits.
• The same search intent: a differently worded search that wants the same thing.

For a local business this is mostly good news. Nobody can list every way a homeowner misspells a water heater brand, and close variants catch them. The cost is that exact match keeps working as a dial, not a lock. The search terms report labels these matches "Exact match (close variant)" so you can see where Google stretched. It also leaves out terms searched by too few people, for privacy, so the report is a large sample rather than a full list.

Broad match modifier is gone, and the old playbooks with it

For years the careful middle option was broad match modifier: a plus sign in front of each word that had to appear, such as +water +heater +repair. Google retired it in 2021. From February 2021 phrase match began absorbing its behavior, and from July 2021 new keywords could no longer be added with the plus notation. Old modified keywords still serve, but they behave as phrase match, and editing one converts it to phrase notation.

Google's own example shows what phrase match now covers. A phrase keyword for moving services from NYC to Boston can match a search for corporate moving services from NYC to Boston, which once needed the modifier. It will not match a search for moving from Boston to New York, because reversing the cities changes the meaning.

Negative keywords, the half of the list that saves money

Positive keywords say which searches you will pay for. Negative keywords say which you will not, and on a small budget they often matter more. They have their own three match types, and they behave differently from the positive ones in two ways that catch people out.

The first catch: negatives do not match close variants. A negative for job does not block jobs, and a negative for plumber does not block plumbers, so add singular, plural and synonyms yourself. Google handles casing and misspellings. The second catch is the broad negative's any-order rule. A plumber who adds how to as a broad negative to stop do-it-yourself searches also blocks how much does it cost to repair a water heater, because that search contains both words. Written as the phrase negative "how to", it blocks only the do-it-yourself searches.

Google also notes that a negative keyword stops working after the sixteenth word of a long search, and that too many negatives shrink your reach. Shared negative lists save rebuilding the same list in every campaign, and an account-level list applies across eligible Search and Shopping inventory. Build the first list before launch from keyword research, then add to it from the search terms every week.

Broad match plus Smart Bidding: handing the machine the keys

Google's position is plain. Its help center calls it critical to use Smart Bidding with broad match, so bids can reflect each search at auction time. Smart Bidding is the family of automated strategies (Maximize conversions, Target CPA, Target ROAS, Maximize conversion value) that set a bid for every auction from signals such as the device, location, time of day, the actual search typed and the visitor's behavior on your site.

The arrangement works like this. Broad match widens the pool of searches. Smart Bidding then bids high on the searches that look like your past conversions and low on the rest. Google says Smart Bidding requires conversion tracking, and it suggests judging the results over periods with at least 30 conversions, such as a month or longer.

Broad match does not guess what you want. It guesses what you counted.

That is the whole risk. If the account counts page views, or every call including the two-second hang-ups, Smart Bidding will find you more of those, efficiently. If it counts booked jobs, or at least calls longer than a minute and real form submissions, the pairing can find good searches no keyword list would have thought of. Conversion tracking setup comes before broad match, not after, and the tracking problems page lists the usual breaks.

Google is also folding this logic into AI Max for Search. Turning on AI Max turns on search term matching, which reaches past your keywords using broad match and keywordless technology learned from your keywords, ads and pages. Google says campaigns using the older broad match campaign setting, which converts every keyword to broad and works only with conversion-based Smart Bidding, are being upgraded to AI Max automatically starting September 2026.

When several keywords could match, which one wins

Accounts often hold the same idea in several forms: exact in one ad group, phrase in another, broad somewhere else. Google's keyword prioritization rules decide which one enters the auction:

1. 1

   An identical exact match keyword wins first

   If the search is water heater repair and you have [water heater repair], that keyword goes forward ahead of any phrase or broad keyword and ahead of Performance Max. Identical includes spelling corrections, but not plurals or synonyms.

2. 2

   Then any identical phrase or broad keyword

   A phrase or broad keyword, or a Performance Max search theme, that is identical to the search comes next.

3. 3

   Then the most relevant ad group

   When nothing is identical, Google judges relevance from the search, all the keywords in each ad group and the ad group's landing pages, and considers only the most relevant.

4. 4

   Ad Rank breaks the tie

   Among keywords of equal priority, the one that produces the highest Ad Rank enters the auction.

Google lists exceptions. Searches through Lens, AI Mode, AI Overviews and autocomplete use AI relevance matching instead of the identical-keyword rule, and a preferred keyword can sit out if its budget is limited or its ads are disapproved. The practical lesson for a small account: put your most valuable searches in exact match with their own ads and page, and you decide which ad answers them. The ad copy examples show what those ads can say.

A match type plan for an account spending a few thousand a month

There is no single correct mix, and Google's own guidance now leans toward broad match. For a local business with a modest budget and no long conversion history, this order keeps money on searches you chose while the account learns:

1. 1.Start with exact and phrase on buying searches. A service plus a town, a service plus repair or emergency. Keyword Planner shows what people in your area actually type, and keyword intent explains which of those searches are buyers.
2. 2.Write the negative list before launch. Jobs, training, do-it-yourself and towns you do not serve, with plurals added by hand.
3. 3.Read the search terms report weekly. Promote searches that produce calls into their own exact keywords; add the junk as negatives.
4. 4.Count real outcomes. Answered calls of a set length, forms and, where possible, booked jobs, not clicks.
5. 5.Try broad match in its own campaign once conversions are steady. Pair it with Smart Bidding, compare cost per booked job against the exact and phrase campaign over a month or more, and keep whichever wins on your numbers.
6. 6.Send every keyword group to a page that matches it. A landing page that repeats the search makes every match type work harder.

This is the routine DataCram's PPC management runs: Google Ads on buying searches, with call and form tracking live before a dollar is spent and the first custom landing page built and included when a program starts. The minimum ad budget is $1,000 a month, billed by Google to your own account, and management is quoted after a free audit, month to month. What that budget buys is in how much Google Ads costs, and the free tools for the weekly work are in the PPC tools guide.