Negative Keywords Every Law Firm Should Add to Google Ads

09 September 2026·5 min read

Quick answer: Negative keywords stop your firm's Google Ads budget being spent on people who were never going to become clients — job seekers, students, DIY researchers and free/legal aid hunters. Most firms lose 15–30% of spend to this before adding a single exclusion. The fix is a starter list at account level, plus a practice-area layer reviewed weekly for the first month. Get this right and cost-per-lead usually drops within a fortnight. 📈

If you've ever looked at your Google Ads search terms report and seen "legal jobs Brisbane" or "free legal advice" sitting next to your $180-a-click personal injury keywords, you already know the problem. Google Ads doesn't know the difference between someone about to sign a retainer and someone Googling for a uni assignment — it just knows both searches contain the word "lawyer." 💖 The account doesn't fix this for you. You have to.

What most firms get wrong

The usual pattern: a firm (or their agency) sets up a campaign around broad-match keywords like "family lawyer" or "conveyancing solicitor," turns it on, and checks back a month later wondering why cost-per-lead is through the roof. There's no negative keyword list at all, or there's a generic one copied from a template and never adapted to the firm's actual practice areas. Broad match without exclusions is Google's invitation to show your ad for anything vaguely related — "legal aid," "law degree requirements," "free will template." Every one of those clicks costs money and converts nobody.

The opposite mistake also happens: someone gets spooked by wasted spend and panic-adds fifty negatives in one sitting, accidentally blocking phrases real prospective clients were actually using. Negative keywords need to be deliberate, not a blunt instrument.

The Law Firm Negative Keyword Starter List

Add these at account level first, then layer practice-area exclusions into each campaign.

1. Free & DIY seekers: free, template, sample, DIY, "how to write my own", legal aid, community legal centre, pro bono

2. Career & education searchers: jobs, careers, hiring, salary, internship, clerkship, "law degree", university, TAFE, course, CPD

3. Research-only seekers: meaning, definition, "what is", wikipedia, reddit, forum, statistics, PDF

4. Wrong location: every major city/state you don't service (e.g. Gold Coast-only firms exclude Sydney, Melbourne, Perth, Canberra)

5. Practice-area cross-contamination: exclude every practice area you don't offer, per campaign — a conveyancing campaign should negative "criminal," "family," "divorce," "will dispute"

6. Cost-anxious, non-buyer intent: "can I sue for free", complaint, review, scam, lawsuit against lawyer

Family law firm: Running ads on "divorce lawyer" without negatives, a Sunshine Coast firm was paying for "free divorce advice Australia" and "how to divorce without a lawyer" — 22% of monthly spend. Adding the DIY/free-seeker list cut wasted spend by roughly $640/month and dropped cost-per-consult from $210 to $146.

Commercial law firm: A firm targeting "business lawyer Brisbane" was showing up for "legal jobs Brisbane" and "paralegal careers" — job-seeker traffic overlaps heavily with commercial legal terms. One round of career negatives removed close to 300 irrelevant clicks a month.

Personal injury / TPD firm: A no-win-no-fee firm was bleeding budget on "is TPD a scam" and "how much do lawyers take from settlement" — anxious research queries from people nowhere near ready to engage a lawyer, caught by the research-only and cost-anxious lists above.

How to actually apply this

1. Add the starter list at account level (Google Ads → Keywords → Negative keywords → Account lists), so it applies everywhere in one move.

2. Layer campaign-level negatives for cross-contamination — a term excluded from your conveyancing campaign might be exactly what you want in your family law campaign.

3. Pull the Search Terms report weekly for the first month (Campaigns → Insights and Reports). Sort by cost, scan for non-buying-intent terms, add them as negatives.

4. Move to monthly review once the list stabilises, usually four to six weeks in.

5. Use phrase or exact match deliberately — a broad negative for "free" could also block "fee-free consultation."

💡 Don't review your search terms report only once and call it done. New junk queries appear as Google's algorithm keeps testing your ads against fresh search variations — the first month needs weekly attention, but this is genuinely a five-minute task once you know what you're looking for, not a project.

Mistakes to avoid

Copy-pasting a generic list without adapting it. A firm that does offer limited pro bono work shouldn't blanket-exclude "pro bono" — check your list against what you actually offer.
Setting broad match negatives carelessly. A broad negative for "cheap" could also block "cheapest way to settle a dispute" — a legitimate high-intent search.
Forgetting to segment by practice area. A single firm-wide list misses the cross-contamination problem, often the biggest source of wasted spend for firms with 3+ practice areas.
Treating this as set-and-forget. Google's matching behaviour shifts over time, especially with broad match and Performance Max — a list that worked in January can leak by June.

Please note: general information, not legal advice — check current official guidance before relying on it.

Frequently asked questions

Will negative keywords guarantee a lower cost-per-lead?

Not guaranteed — they reduce wasted spend on irrelevant clicks, which usually helps cost-per-lead, but your ad copy, landing page and offer still do most of the work. Negative keywords fix leakage, not a weak funnel.

Should every practice area share the same negative list?

The starter list (free/DIY/careers/research) should apply everywhere. Cross-contamination negatives need to be campaign-specific, because what's irrelevant in one campaign might be exactly what you're bidding on in another.

How many negative keywords is too many?

There's no fixed number, but adding 15–20+ in one sitting without checking real search term data first means you're guessing — and risking blocked genuine enquiries.

Does this work the same way on Meta ads?

No — Meta targets by audience and interest rather than search terms, so this specific tactic is Google Search-specific. Meta needs a different exclusion approach entirely.