Keywords

Should B2B Google Ads campaigns use broad, phrase or exact match keywords?

By The Tofu team ·

Use exact and phrase match if your account gets only a few conversions a month, bids with Manual CPC or Maximize clicks, or runs out of budget most days: they keep ads on searches that mean what you sell. Use broad match (or AI Max) once Smart Bidding has a lead goal with 15 conversions in 30 days, Google's bar for lead generation, and your budget has room. Test it first. Google mostly recommends broad match with Smart Bidding, though one guide suggests mixing in phrase and exact. Either way, check search terms weekly and add negatives.

As of October 2026.

Quick answer by situation

If you…UseWhy
Get only a few conversions a month, or bid with Manual CPC or Maximize clicksExact and phrase on high-intent termsGoogle calls Smart Bidding "critical" with broad match, and AI Max search term matching doesn't work with Manual CPC
Run out of budget most daysExact and phrase; broad and AI Max offWider matching adds searches you can't afford
Have 15+ conversions in 30 days, Smart Bidding and spare budgetBroad match or AI Max, tested in an experimentGoogle says Smart Bidding "works best with broad match"
Target niche terms marked "Low search volume"Phrase or broad versions, or less specific wordingGoogle's own fix for keywords too rare to serve
Bid on your own brand nameExact (plus phrase) in a brand campaignAn identical exact keyword gets top priority
Are thinking of one ad group per match typeOne ad group per theme insteadBroader types already cover narrower ones

What does each match type match now?

All three match on meaning, not just words:

Match typeHow you type itWhat Google says it matches
Broadcrm for law firms"Searches that are related to your keyword, which can include searches that don't contain the direct meaning of your keywords." It's the default
Phrase"crm for law firms""Searches that include the meaning of your keyword." The meaning can be implied, and the search can be more specific
Exact[crm for law firms]"Searches that have the same meaning or same intent as the keyword." The most control and the fewest searches

Broad match can also use the searcher's recent searches, your landing pages and the other keywords in the ad group. Each wider type catches every search the narrower ones catch, plus more.

Exact and phrase still match close variants, such as plurals, acronyms, abbreviations and same-meaning variants, which is why phrase match can feel loose in B2B. The search terms report labels each search by how it matched, so a broad keyword that matches an identical search shows as "Exact match." Google says changing match type doesn't change Quality Score.

AI Max goes further. Its search term matching uses "broad match and keywordless technology," so ads can show on searches that match none of your keywords (the report labels them "AI Max"). Google has folded the old campaign-level broad match setting into AI Max; see what the AI Max upgrade changed.

What does Google recommend, and what does it cost a small B2B account?

Mostly broad match with Smart Bidding. Google's keyword help says "It's critical to use Smart Bidding with broad match." Its lead generation guide says to "use broad match with Smart Bidding" and to bid on a goal with at least 15 conversions in the last 30 days at the account level. The Recommendations page offers to switch keywords to broad match, sometimes with a higher "New budget," and "Add broad match keywords" can be auto-applied. Google's May 2025 Ads & Commerce blog post says advertisers who turn on AI Max "typically see 14% more conversions or conversion value at a similar CPA/ROAS," and 27% for campaigns still mostly on exact and phrase. Its footnote credits these figures to Google's internal 2025 data for non-retail advertisers, and they count conversions, not pipeline. Google's pages pull two ways, though: its guide to optimizing ads and landing pages suggests "a mix of keyword match types, such as phrase or exact matches."

For a B2B account with a few demo requests a month, broad match costs you in three ways:

  • Little to learn from. Smart Bidding can't sort good searches from bad on four conversions a month, and if spam form fills count as conversions, it learns from those.
  • Paid-for junk. Broad match can reach job seekers, students and people after free tools. You pay for each click until you add a negative.
  • Gaps in the report. The search terms report leaves out searches with too little activity, so you won't see every search you paid for.

If you get only a few conversions a month

Build on exact and phrase match for searches that mean "I want to buy this": the category, the problem, "software," "pricing," the alternatives. Bid with Manual CPC or Maximize clicks with a max CPC limit until your lead goal nears 15 conversions in 30 days (see which bid strategy fits a campaign with few conversions). Leave AI Max off: Google says its search term matching won't work with Manual CPC.

If your budget runs out most days

Stay narrow, because every extra search competes for the same few dollars. Google warns that AI Max "won't be effective if campaigns are limited by budget," and that a keyword in a budget-limited campaign "won't always be able to trigger an ad." Fix the budget or cut keywords before you widen matching.

If you have steady conversions and room in your budget

Test broad match or AI Max on one campaign, not the whole account. An AI Max experiment compares the campaign with AI Max on against the same campaign without it. Bid on a goal close to revenue, such as a qualified lead or booked appointment, and judge the test on qualified pipeline per dollar, not conversions alone.

If your niche terms show "Low search volume"

A keyword with that status has "very little to no search history on Google" and stays inactive until searches rise. Google's fixes: a broader match type, less specific wording, or waiting if it's a new term. For finding terms buyers do search, see keyword research when Keyword Planner shows little or no volume.

If you bid on your own brand name

Use exact match, with phrase as backup, in a brand campaign. Google gives first priority to an exact keyword identical to the search, ahead of phrase, broad, AI Max and Performance Max. The exceptions include budget-limited campaigns and searches in AI Mode, AI Overviews, Lens and autocomplete, which Google doesn't treat as identical to any keyword. If a campaign moves to AI Max, Google says broad keywords "are not treated as exact match keywords in prioritization," so add exact copies of the terms you must win.

If you're thinking of one ad group per match type

You don't need it. Your own keywords don't compete: only one can trigger an ad for a search. With Smart Bidding and broad match, Google says there's "no need to segment by match type." Instead, it says to "structure your ad groups thematically," and it picks the most relevant ad group from its keywords and landing pages.

How do negative keywords and the search terms report keep it safe?

In Google Ads, select Campaigns, then Search terms under Insights and reports, check the bad searches and click Add as negative keyword. Google adds these as negative exact match by default, which blocks only that exact search, so change the match type to block a whole theme.

Negative typeBlocks the ad when the search…
Broad (default)Contains all your negative words, in any order
PhraseContains your words in the same order, even with extra words
ExactIs exactly your words, in order, with nothing added

Negatives don't match close variants, so add plurals and synonyms yourself ("job" and "jobs," "free" and "open source"); Google handles casing and misspellings. A shared negative list holds up to 5,000 negatives (20 lists an account), and an account-level list of up to 1,000 applies across Search, Performance Max and other campaign types. Google says AI Max respects negative keywords.

What to avoid

Don't switch a low-volume account to broad match because a recommendation suggests it, and check the auto-apply History tab to see what Google has applied for you. The opposite mistake: exact match so narrow that keywords sit at "Low search volume" and the campaign barely serves.

Where Tofu fits

Tofu Ads Agent (our product) builds Google Search campaigns: keyword research from your site, CRM deals and account history checked against Keyword Planner volumes and forecasts, themed ad groups, negative keywords from your search terms, and the bidding strategy, budgets and schedule. Campaigns are staged in your own ad account switched off, and weekly recommendations stay proposals until you approve them. It doesn't manage AI Max settings or run match type or AI Max experiments; you do that in Google Ads. It costs a flat $2,500 a month, with a recommended media budget of at least $3,000 a month.

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