What Is a Good Cost Per Lead for a Personal Injury Law Firm?

“What's a good cost per lead?” is one of the first questions PI marketing directors ask when evaluating a new channel or vendor. It's a reasonable question — but it's also the wrong place to stop. Cost per lead tells you what you paid for a phone call or form fill. It doesn't tell you what you paid for a signed case.

This article covers realistic cost per lead ranges across the major PI marketing channels — by source type, geography, and exclusivity tier — and explains why CPL is only useful when it's paired with cost per case data.

Why Cost Per Lead Varies So Dramatically in PI

Personal injury is one of the most competitive advertising categories in the country. Cost per lead swings by an order of magnitude depending on case type, geography, lead source, and quality tier. Three factors drive most of the variation:

• Exclusivity.Shared leads — sold to multiple firms simultaneously — cost less per unit but convert at lower rates. Exclusive leads cost more but arrive with less competition for the prospect's attention.
• Case type. Motor vehicle accident leads are the most commoditized. Mass tort, catastrophic injury, and premises liability leads are rarer and typically cost more — because expected case value is higher.
• Geography. Los Angeles, New York, and Miami are far more expensive than secondary markets. Competitive metros push both paid search and vendor lead prices up significantly.

Cost Per Lead Ranges by Channel

The following ranges reflect what PI firms across the country actually report paying — not what vendors advertise. These are reference points, not targets. Your specific market, case type focus, and intake performance all influence where your numbers land.

Lead Aggregators and Shared Lead Vendors

Firms purchasing shared leads from aggregators typically pay between $30 and $120 per lead. At the low end, you're usually looking at recycled leads or lower-intent web form fills. At the upper end, aggregators with better sourcing and fresher leads charge accordingly.

The catch: conversion rates on shared leads tend to run lower — often 2% to 4% from lead to signed case. Your actual cost per case from this channel often ends up higher than the headline CPL suggests.

Exclusive Lead Vendors

Exclusive leads — where your firm is the only buyer — typically run $150 to $400 per lead for motor vehicle accident cases, and can reach $600 to $1,200+ for catastrophic injury or high-value case types. The higher upfront cost is partially offset by better conversion rates: firms frequently report 6% to 12% lead-to-signed-case conversion on good exclusive sources.

Google Search Ads

Google paid search is one of the most expensive channels in PI marketing, and for good reason: the people clicking are actively searching for an attorney right now. Firms running their own campaigns typically generate leads at $80 to $300 per lead in moderately competitive markets, and $250 to $600+ in the most competitive metros.

That higher cost per lead is often justified by higher intent. Someone who searches “personal injury attorney near me” and submits a contact form is at a very different decision stage than someone who responded to a social ad. That intent difference shows up in conversion rates — which is why CPL alone doesn't tell the full story.

Local Service Ads (LSA)

Google's Local Service Ads have become a popular complement to traditional search campaigns. Because Google pre-screens advertisers, leads tend to carry slightly higher trust signals. Typical cost per lead ranges from $30 to $150, though volume caps make it difficult to scale LSA as a standalone channel. Many firms layer it beneath paid search as a baseline volume source.

Facebook and Social Advertising

Social leads for PI firms typically run $40 to $150 per lead. The lower cost reflects that social advertising reaches people who weren't actively searching for an attorney — which generally translates to lower intent and lower conversion rates. That said, social can be an effective supplemental channel for specific case types, especially mass tort campaigns.

It's common to see social CPLs of $25 paired with conversion rates of 0.5%–1.5% from lead to signed case. Compare that to Google Ads at $120 CPL with conversion rates of 4%–8%. The math often flips completely when you follow leads all the way to signings.

TV and Traditional Media

TV-generated leads are notoriously difficult to cost-per-lead because of the attribution challenge — calls come in over an extended period after an ad runs. Firms that do track TV leads carefully report costs ranging from $100 to $500 per lead depending on market and time slot. Large volume buys in competitive markets can push effective CPL higher still.

Referral and Organic

Attorney referrals, past client referrals, and organic search leads typically have the lowest cost per lead — often near zero in direct cost. Track these separately. Mixing them into your paid channel analysis distorts your CPL averages and can make paid performance look worse or better than it actually is.

The Core Problem with Cost Per Lead as a Decision Metric

Here's the fundamental issue: cost per lead measures the front door of your funnel, not the outcome. A $50 lead that never converts costs infinitely more than a $200 lead that becomes a $50,000 settlement.

The metric that actually matters is cost per signed case — how much marketing spend did it take to produce one executed retainer. That requires tracking leads from arrival through intake and signing, not stopping at the point of lead delivery.

Channel A looks 3x more efficient on CPL. Channel B is actually twice as efficient on the metric that determines whether your marketing spend is working. If you make budget decisions based on CPL alone, you will systematically underfund your best sources and overfund your worst ones.

To make this concrete, consider two vendors charging the same CPL:

• Vendor A: $120/lead, 4% lead-to-signed conversion rate = $3,000 cost per case
• Vendor B: $120/lead, 9% lead-to-signed conversion rate = $1,333 cost per case

Same cost per lead. Very different economics. A firm optimizing on CPL would treat these vendors identically. A firm optimizing on cost per case would double Vendor B's budget and put Vendor A on notice.

How to Use CPL Correctly

Cost per lead is a useful metric — it just needs to be used for the right purpose.

• Evaluate whether a new vendor is in a plausible pricing range. Industry benchmarks tell you if a vendor's quoted CPL is reasonable before you have conversion data to judge them on.
• Monitor for anomalies within a channel.If CPL on Google Ads spikes 40% month-over-month, that's a signal worth investigating. CPL is a good early warning indicator inside a single channel.
• Set initial budget assumptions when entering a new source. You won't have cost-per-case data for three to six months. CPL and conversion-to-consultation rates give you leading indicators while you wait.
• Optimize within a campaign.Inside a single Google Ads campaign, CPL helps you compare keywords, ad creative, and landing pages. Just don't use it to compare channels against each other.
• Always pair CPL with cost per case for budget decisions. Any decision about which vendors to increase, cut, or test should be made on cost per case — not cost per lead.

Industry Averages vs. Your Firm's Data

These ranges are useful for context — particularly when evaluating a new vendor or explaining marketing costs to a managing partner who asks “is this a reasonable price?”

But your own historical data is always more valuable than industry averages. A vendor that charges $180/lead and converts at 8% for your firm is worth more than a $90/lead vendor that converts at 3%. Industry benchmarks can't tell you that — only your firm's data can.

Building Toward Cost Per Case Visibility

If you're currently tracking CPL from each vendor but not cost per case, the next step is connecting your intake data to your marketing spend data. That means knowing four things per source, per period:

• How many leads came from each source
• How many of those leads were rejected at intake (and why)
• How many were retained (signed case)
• What the total spend for that source was in that period

With those four numbers, you can calculate cost per case. Without them, cost per lead is the best you can do — and cost per lead will steer you toward the wrong conclusions more often than not.

Firms that make this jump — from cost per lead tracking to cost per case tracking — typically find they can reallocate 15% to 25% of existing budget to higher-performing sources without adding a dollar of new spend. That's the practical value of the metric. And a reasonable target is to know your cost per case by major source within 90 days of starting any new vendor relationship.

RevenueScale's cost per case tracking connects your marketing spend to signed case outcomes automatically, by source — so you stop optimizing for the wrong number.