Every Google Ads account we've audited in the last year had at least one search term eating budget that should have been blocked months earlier. "Jobs," "free," "DIY," "salary" — the usual suspects. Negative keywords are the single cheapest optimization in paid search: one afternoon of work that permanently stops wasted clicks.
Below: how negative match types actually behave (they don't work like regular match types), where to find the terms costing you money, how to structure negative lists by campaign type, and a 25-term starter list you can copy into your account today.
What Are Negative Keywords?
A negative keyword tells Google: "never show my ad when a search contains this term." If you're a residential plumber bidding on "plumber near me" and you add "jobs" as a negative, your ad stops appearing for "plumber jobs near me," "plumber job openings," and every other employment query.
The economics are simple. Every irrelevant click costs the same as a relevant one — $30 for a plumber, $150 for a personal injury lawyer. If 15% of your clicks come from people looking for jobs, free advice, or DIY instructions, you're donating 15% of your budget to Google. On a $5,000/month account, that's $9,000 a year.
Negative keywords are also how you enforce campaign boundaries. Running separate campaigns for "emergency plumbing" and "plumbing installation"? Without negatives, Google decides which campaign serves which query — and it often decides wrong. Cross-campaign negatives force the right query into the right campaign, with the right bid and the right landing page.
Negative Keyword Match Types (They're Not What You Think)
Negative keywords come in three match types, and this is where most advertisers get burned: negative match types are stricter than positive ones. Google does not expand negatives to synonyms, close variants, or related searches the way it does for your bidding keywords.
Negative Broad Match
Default type. Your ad is blocked when the search contains all of your negative terms, in any order. Negative broad "pool table" blocks "buy a table for my pool" but not "swimming pool supplies" — because "table" is missing. It also doesn't block plurals unless you add them: negative "job" still lets "jobs" through in some auction contexts, so add both forms.
Negative Phrase Match
Blocked when the search contains your exact terms in the exact order, with anything before or after. Negative phrase "pool table" blocks "used pool table for sale" but allows "table for pool." This is the workhorse for blocking multi-word junk like "how to become," "do it yourself," or "for free."
Negative Exact Match
Blocked only when the search is exactly your negative term, nothing added. Negative exact [free roof inspection] blocks that specific query but allows "free roof inspection near me." Exact negatives are for precision strikes on individual search terms you've seen in your report — not for building general protection.
Practical rule: build your shared lists with negative phrase match, use negative broad for single junk words ("jobs," "free," "salary"), and reserve negative exact for surgical blocks on specific high-spend queries.
How to Find Negative Keywords: 5 Sources
1. The Search Terms Report (Your #1 Source)
In Google Ads, go to Campaigns → Insights and reports → Search terms. Set the date range to the last 30–90 days, then sort by cost descending. Read every term that spent money. Ask one question: "Would I pay full price for this click again?" If no, it's a negative.
Do this weekly for new campaigns, monthly for mature ones. This single habit is worth more than most "optimization" busywork.
2. Keyword Research Before You Launch
Don't wait to waste money finding negatives. When you research keywords, note every adjacent term with the wrong intent. Researching "water heater installation"? You'll immediately see "water heater installation cost DIY," "water heater installation jobs," "home depot water heater." Add them to a negative list before the campaign spends a dollar. Our free keyword research tool surfaces these adjacent terms alongside volume and CPC data.
3. Google Autocomplete and "People Also Ask"
Type your core keywords into Google in an incognito window. Autocomplete reveals how real people extend the query — and half of those extensions are wrong intent for a service business. "Roof replacement financing" might be fine. "Roof replacement grants" probably isn't.
4. Your Competitors' Junk
If a competitor ranks for "cheap," "discount," or "coupon" and you compete on quality, block those terms. Their strategy isn't yours.
5. GA4 and Call Recordings
Site search data, form submissions, and call recordings show the language real prospects use — and the language tire-kickers use. If your call logs are full of people asking for services you don't offer, find the query that brought them and negate it.
Negative Keyword Lists by Campaign Type
Search Campaigns (Core Protection)
Every search campaign needs a base negative list covering: employment ("jobs," "hiring," "careers," "salary"), free-seekers ("free," "DIY," "how to"), education ("course," "certification," "training," "school"), and wrong-geography terms. Apply it via Tools → Shared library → Negative keyword lists so one list protects every campaign.
Brand Campaigns
Brand campaigns exist to catch people searching your company name. Negate navigational junk: "login," "reviews" (if you don't want to pay for reputation queries), "complaints," "lawsuit," "phone number" (they'd call anyway). Also negate your own name from non-brand campaigns — otherwise Google blends brand and non-brand traffic and your true acquisition cost disappears into flattering brand numbers.
Performance Max
PMax ignores most of your guardrails, but account-level and campaign-level negatives now apply to its search inventory. Add your employment/free/DIY list at the campaign level, and submit brand negatives if you're running separate brand search. This is non-negotiable — left alone, PMax happily spends on "free" and "jobs" queries you'd never tolerate in search.
Local Services Ads
LSA doesn't accept negative keywords at all. Your controls there are service categories, service areas, and disputing invalid leads. Don't confuse the two systems.
How to Add Negative Keywords: Step-by-Step
- For a single term from the search terms report: go to Campaigns → Insights and reports → Search terms, check the box next to the term, click "Add as negative keyword," and choose ad group, campaign, or an existing list. Choose the level carefully — the report defaults to ad group, which is usually too narrow.
- For a one-off campaign negative: open the campaign, go to Audiences, keywords, and content → Keywords → Negative keywords, click the blue plus, enter your terms, and select the match type.
- For a shared list (recommended): go to Tools → Shared library → Negative keyword lists → New list. Name it by function ("Employment negatives," "Free/DIY negatives"), paste your terms one per line with match type syntax (
jobsfor broad,"how to"for phrase,[salary]for exact), save, then apply the list to all relevant campaigns. - Account-level negatives: Tools → Shared library → Negative keyword lists also supports account-level application, which covers every campaign including Performance Max. Use this for universal junk only.
- Verify: after adding, use the search terms report's "Added/Excluded" column filter to confirm terms are showing as "Excluded" rather than "Added."
Copy-Paste Starter List: 25+ Negatives for Local Service Businesses
This is the base list we apply to new local service accounts. It won't all fit your business — delete what doesn't apply — but it's a defensible starting point:
- jobs
- job openings
- hiring
- careers
- salary
- how much do (e.g. "how much do plumbers make")
- free
- for free
- DIY
- do it yourself
- how to
- tutorial
- YouTube
- course
- certification
- training
- school
- apprenticeship
- forum
- reviews of (competitor terms, if unwanted)
- used
- rental
- parts
- supplies
- wholesale
- template
Two cautions before you paste. First, "free" can be wrong for some businesses — if you advertise "free estimates" or "free inspection," block "free" only in exact and phrase forms around the specific queries ("free [product]," "free download") instead of a broad block. Second, review the list against your actual services quarterly; a business that starts offering maintenance plans needs "maintenance" pulled out of its negatives.
5 Negative Keyword Mistakes That Cost Real Money
1. Blocking Your Own Keywords
Negative broad matches more aggressively than people expect. A roofer adding negative broad "repair" to push replacements just blocked "roof repair and replacement." Before saving any negative, check it against your keyword list — Google Ads flags direct conflicts with a warning icon, but it won't catch intent conflicts. This matters most if you're bidding on broad match keywords, where negatives are your primary steering wheel.
2. Forgetting Plurals and Misspellings
Negative "job" does not reliably block "jobs." Negative "plummer" is never needed (Google close-matches your positives past misspellings anyway), but plural forms of negatives are. Add both singular and plural for anything important.
3. Setting Negatives at the Ad Group Level
Ad group-level negatives are for campaign architecture (separating two ad groups competing for the same query), not for junk blocking. Junk belongs in campaign-level or shared lists. Ad group-level junk negatives rot: you add a new campaign, forget the negatives, and the junk returns.
4. Never Pruning the List
Negative lists accumulate. Five years of one-off blocks can include terms that are now relevant. Audit shared lists twice a year; a bloated list is a hidden tax on reach.
5. Treating Negatives as Set-and-Forget
New junk queries appear constantly — especially if you use broad match, where Google actively explores new query territory. The search terms report review is a weekly ritual, not a quarterly one. If you also struggle with high CPCs, negative keyword hygiene is usually the fastest fix because it improves both relevance and Quality Score at once.
Want Us to Find the Budget You're Wasting?
Negative keyword gaps are one of the first things we check in a Media Spearhead account audit. We'll pull your search terms report, quantify exactly how much spend is going to irrelevant queries, and show you the full picture — bids, structure, Quality Score, tracking. No contracts, no cancellation fees. Book your free consultation or call (904) 341-5986.
FAQ: Negative Keywords in Google Ads
What is a negative keyword in Google Ads?
A negative keyword is a term that prevents your ad from showing on searches containing it. Adding "jobs" as a negative keyword stops your plumbing ad from appearing on "plumber jobs" searches, so you stop paying for clicks with zero buying intent.
Do negative keywords use the same match types as regular keywords?
They use the same three names — broad, phrase, exact — but behave more strictly. Negatives do not expand to synonyms or close variants the way positive keywords do, so you must add plurals and important variations yourself.
How many negative keywords should I have?
Most well-run local service accounts carry 100–400 negatives across shared lists plus campaign-level additions. There is no target number — what matters is a weekly search terms review so the list grows with real evidence, not guesses.
Can negative keywords hurt my campaign?
Yes. Overly broad negatives can block profitable queries — negative broad "repair" also blocks "roof repair and replacement." Check each negative against your keyword list before saving, and audit shared lists twice a year for stale blocks.
Do negative keywords work in Performance Max?
Yes. Campaign-level and account-level negative keywords now apply to Performance Max search inventory. Adding your employment/free/DIY list to PMax campaigns is one of the highest-value hygiene steps in a modern account.
Related Reading
- Broad Match in Google Ads (2026) — why negatives matter more than ever on broad.
- How to Lower Your Google Ads CPC: 11 Proven Tactics — negatives are tactic #1.
- Free Keyword Research Tool — find wrong-intent adjacent terms before they cost you.
- How Much Do Google Ads Cost? — where negative keywords fit in total account economics.