Negative Keywords for B2B Google Ads: A Starter List and Routine

If your B2B Google Ads account has been running for more than a month, I can almost promise some of your budget went to people looking for jobs, free templates or a college assignment. Negative keywords for B2B are the cheapest fix for that wasted spend, but only if you set them up correctly. Below you will find a starter list grouped by theme, how negative match types actually behave (they are not the same as normal match types), where each negative should live, and the weekly routine I use.

Why negative keywords for B2B matter more

A consumer brand can afford some loose traffic because its audience is huge and buying is quick. A B2B company selling, say, payroll software to mid-sized firms has a much smaller pool of real buyers, and every profession it sells to also has students studying it and people trying to get hired into it.

Google's matching has also become broader over time. Broad match keywords can now trigger ads for related searches that don't contain your exact words. That is useful when Google knows what a qualified lead looks like, and expensive when it doesn't. Negatives are how you draw the edges.

They help in two ways. The obvious one is fewer wasted clicks. The less obvious one, which WordStream points out, is that irrelevant impressions drag down your click-through rate, which affects Quality Score and therefore what you pay per click (WordStream).

How negative keyword match types actually work

This is the part most guides get slightly wrong, so I'll stick closely to Google's own help page. The biggest difference from positive keywords: negative keywords do not match close variants. A negative for "jobs" will not block "job". You have to add singular, plural and synonyms yourself. Google does handle casing and misspellings automatically.

Using a hypothetical negative of hr jobs, here is how each type behaves:

So negative broad blocks a search only when all the words are present, in any order. Negative phrase needs the words in the same order, with extra words allowed. Negative exact blocks only that exact search with nothing added.

Two practical consequences for B2B:

• Single word negatives are the workhorse. A broad negative of jobs blocks every search containing that word. Add job separately.
• Use exact for surgical cuts. If "crm" is a good keyword but "[crm full form]" keeps showing up, exact match removes that one search without touching anything else.

One more detail from Google: if a search is longer than 16 words and your negative appears after the 16th word, the ad can still show. Rare, but worth knowing when you see something odd.

Account-level negatives, lists and campaign negatives

Where you add a negative matters as much as what you add. Here is how I think about the three levels, with the current limits from Google Ads Help:

Sources: account-level negatives and negative keyword lists. Search Engine Land reported in 2025 that some accounts were holding lists slightly over 5,000, but Google said the documented cap still stands (Search Engine Land). Plan for 5,000.

For Performance Max, you can now add negatives to a specific campaign or attach a list, and account-level negatives apply too. Google notes these only cover Search and Shopping inventory (Google Ads Help), so they will not stop a YouTube or Display placement. Display and Video handle negatives differently altogether.

My rule of thumb: account level for "never", lists for "not for these campaigns", campaign level for "send this search somewhere else".

A starter list of negative keywords for B2B

Treat these negative keywords for B2B as a starting point to review, not a list to paste in blind. Every row has a trap for some businesses, which I've noted.

A few India specific notes. Job portal names and phrases like "walk in" are common in Indian job searches, so they belong in the jobs theme. Students often search with "pdf", "ppt" and "notes", which are rarely buyer words in B2B. And "near me" is worth excluding for SaaS or national suppliers, but not for a local industrial service.

HubSpot makes a fair warning here: overlong negative lists can shrink your reach, so focus on clear differences between what you sell and what searchers want (HubSpot). I agree. A short, deliberate list beats a giant downloaded one.

My weekly search terms report routine

The starter list blocks what you can predict. The search terms report catches what you can't. Google describes it as showing the actual searches that triggered your ads, though low volume searches are left out for privacy (Google Ads Help). Here is the 30 minute routine I run each week:

1. Set the date range to the last 7 days and compare with the previous 30, so you catch both new problems and slow leaks.
2. Turn on the Keyword column. It is hidden by default, and you need it to see which of your keywords pulled in each search.
3. Sort by cost, highest first. Review the top 50. That is where the money is.
4. Label each term as good, bad or unsure. Bad ones become negatives; good ones may become keywords.
5. Choose the right level. Ask: is this never right for the business (account), wrong for a theme (list), or just in the wrong campaign (campaign negative)?
6. Pick the narrowest match type that solves it. A single word broad negative if the word is always bad; phrase or exact if it is only bad in context.
7. Check Performance Max insights separately if you run it, since its search terms show up differently.
8. Log what you added and why. In three months, someone will ask why a search is blocked.

In the first month of a new campaign, or right after switching to broad match, I run this every two or three days instead.

Common mistakes I see

• Blocking "free" when you offer a free trial. You lose your best searches.
• Assuming plurals are covered. They are not. Add both.
• Putting everything at account level. It is capped at 1,000 and hides decisions that should be campaign specific.
• Never reviewing old negatives. Products change. A negative from two years ago may now block a new service.
• Judging terms on clicks alone. A term with no form fills might still bring qualified calls. Check against CRM data, which my guide on tracking B2B leads to revenue covers.

How I handle negatives for clients

On every new account, I build the negative lists before launch, then run the weekly routine above and share what was blocked so the client's team can flag anything that looks wrong. Negative keywords for B2B are unglamorous work, and they are usually where the quickest savings are. It sits inside my B2B Google Ads management service, alongside structure, bidding on qualified leads and CRM tracking.

If you want the wider picture, start with my guide to Google Ads for B2B, and pair it with B2B keyword research so your positive keywords and negatives are planned together. Unsure about a term? The B2B marketing glossary explains the jargon, and you can always book a call if you would like me to review your search terms.

The short version

• Negative keywords for B2B are the fastest way to cut Google Ads wasted spend on jobs, students, DIY and consumer searches.
• Negatives do not match close variants, so add singular, plural and synonyms yourself.
• Account level for "never", shared lists for themes, campaign level for routing.
• Start from a short, reviewed starter list, then let the weekly search terms report do the rest.
• Log every negative so you can undo it when the business changes.