What Is a Good Cost Per Case for a Personal Injury Firm? 2026 Benchmarks

A good marketing cost per signed case for a personal injury firm sits between 10% and 20% of the attorney fee you expect that case to produce. On the $52,900 average settlement reported by Nolo (via Clio's personal injury statistics) at a one-third contingency, the fee is about $17,633, which puts a defensible acquisition budget at roughly $1,760 to $3,530 per signed case. Any cost-per-case figure quoted without a case value attached to it is not a benchmark. It is a rumor.

That is why the published numbers look like they come from different planets. Rankings.io, working from $3.3 million of Google Ads and Local Services Ads spend across 13 firms, reports a cost per signed case of $468 at a 7% lead-to-case conversion rate. Mohr Marketing publishes a $2,000 to $5,000 range and shows no methodology for how it got there. Both numbers circulate as "cost per case." They are not measuring the same thing.

Three numbers, three different answers

Most arguments about cost per case are really arguments about definitions. There are three distinct figures, they differ from each other by an order of magnitude, and a firm that mixes them up will either starve a working channel or keep funding a broken one.

1. Cost per lead

Media spend in a period divided by the inquiries that period produced. Rankings.io puts the personal injury average at $284 per lead across its 13-firm dataset. WordStream's 2026 benchmark set, covering more than 13,000 campaigns and reported by Custom Legal Marketing, puts legal services at $131.63 per paid-search lead, the highest of 23 industries against a cross-industry average of $70.11.

The spread between $131.63 and $284 is not an error. WordStream measures form fills and calls from search ads. Rankings.io measures what personal injury firms actually paid for inquiries across paid search and LSA, in a market where the average legal click costs $9.87 and the most contested terms run $150 to $500.

2. Marketing cost per signed case, media only

Media spend divided by signed cases. It is the same thing as cost per lead divided by your lead-to-case conversion rate, which is the identity worth memorizing:

Media cost per signed case = cost per lead / lead-to-case conversion rate

At $284 per lead and a 7% lead-to-case rate, that is $284 / 0.07 = $4,057 of media per signed case. At a 20% rate, the same lead produces a $1,420 case. Nothing changed about the lead. The intake department changed.

3. Fully loaded client acquisition cost

Media, plus agency fees, plus the payroll of everyone who touches a lead before it signs, plus the software that carries it. This is the number your accountant would recognize as the cost of acquiring a client, and it is the one that belongs in a partner meeting. It is routinely two to three times the media-only figure, which is most of the reason the published benchmarks disagree.

The arithmetic, step by step

Run these five steps on your own last twelve months before you compare yourself to anybody.

1. Total your media spend for the period. Ad platform invoices, directory fees, purchased leads, TV and radio buys, sponsorships. Media only, no salaries.
2. Count qualified inquiries, not raw form fills. Divide media spend by that count. This is your cost per lead.
3. Count cases signed from that same cohort of leads, not cases signed in the same calendar month. Divide signed cases by leads. This is your lead-to-case rate.
4. Divide media spend by signed cases. This is your media cost per signed case, and it should equal step 2 divided by step 3.
5. Add agency retainers, intake payroll and benefits, CRM and call tracking subscriptions to the media figure, then divide by signed cases again. This is fully loaded client acquisition cost.

Steps 3 and 5 are where firms quietly cheat. Attributing this month's signings to this month's spend flatters any growing budget, and leaving intake payroll out of the denominator is how a $5,000 acquisition cost gets published as $1,800.

Why $468 and $5,000 are both in circulation

The Rankings.io figure is media-only, and it comes with a wrinkle worth naming. Cost per signed case equals cost per lead divided by conversion rate, so a $468 case at a 7% conversion rate implies a lead cost of $468 x 0.07 = $32.76. That is not consistent with the same report's $284 average cost per lead, which at 7% produces $4,057. The two numbers describe different slices of the same dataset, most likely a blend that includes very cheap channels. Cite the $468 if you like, but do not plan against it without asking which leads it covers.

Mohr Marketing's $2,000 to $5,000 range is at least the right order of magnitude for a fully loaded number. What it lacks is any published methodology: no sample size, no channel mix, no definition of what sits inside the cost. Treat it as a plausible shape rather than a measurement.

The useful takeaway is not which agency is right. It is that anyone quoting you a cost per case should be able to say, in one sentence, what is in the numerator and which cohort is in the denominator. If they cannot, the number is decoration. Our personal injury marketing agency reporting opens with that definition for exactly this reason.

Benchmarks by case type

Rankings.io publishes 2026 lead costs by case type. The two right-hand columns are our arithmetic, not their data: lead cost divided by a 7% conversion rate, and by the 20% rate the same report attributes to exclusive live-transfer leads.

Read the medical malpractice row carefully before you get excited. Cheap leads in that category are cheap because the qualification burden is enormous and the sign rate on raw inquiries is a fraction of what auto produces. Case type benchmarks only mean something next to your own screening data, which is the argument we make in more detail in our personal injury intake benchmarks.

Benchmarks by channel

Lead costs and conversion rates by channel are Rankings.io 2026, except the $442 Google Ads and $183 SEO figures from LEXGRO via Web Tonic and the roughly 25% LSA conversion rate from Mohr Marketing. OptimizeMyFirm's proprietary LSA analysis lands in the same neighborhood: a $240 national average per undisputed lead, ranging from $140 in Kentucky to $344 in Louisiana, converting at about one in four for roughly $960 per retained case.

The shared-lead row is the one that ends firms. At $150 a lead and a 2% sign rate you are paying $7,500 in media for a case that may be worth a $9,000 fee. The purchase price looked like a bargain. The economics were never there. We break the full channel picture down in personal injury lead costs by channel.

What your case value lets you afford

Cost per case has no meaning in isolation. The ceiling is set by expected fee, and expected fee is set by average case value times your contingency percentage times the share of signed cases that actually resolve with a fee.

The CCC Intelligent Solutions figure of $27,373 for an average auto liability bodily injury claim in 2024, up 8% year over year, comes from the same Clio compilation as the Nolo number. The third row is illustrative, not sourced.

Here is the rule of thumb. Keep fully loaded acquisition cost under 15% of expected fee if you want the practice to fund its own growth, and under 20% if you are deliberately buying market share and have the working capital to carry it. On a $52,900 average settlement at one-third, that is a hard ceiling near $3,530 per signed case and a comfortable target near $2,645.

Two corrections before you use those numbers. First, 95% of personal injury lawsuits settle before trial (The Law Dictionary via Clio), so fee realization on signed cases is high but never complete. Second, if a fifth of your signings drop, refer out, or resolve at nuisance value, your effective fee per signed case is lower and every ceiling above should come down proportionally.

Worked example: a firm signing 20 cases a month

Take a hypothetical firm signing 20 cases a month with a $52,900 average settlement and a one-third fee. Expected gross fees are 20 x $17,633 = $352,660 per month of signed inventory, collected over the following 12 to 24 months.

Scenario A, intake converting at 7%. To sign 20, it needs 20 / 0.07 = 286 leads. At $284 per lead, that is $81,224 of media. Add an $8,000 agency retainer, three intake staff at $4,500 fully burdened for $13,500, and $2,000 of CRM, call tracking, and dialer. Total $104,724, divided by 20 cases, is $5,236 per signed case. Against a $17,633 expected fee, acquisition is consuming 29.7% of the fee.

Scenario B, same firm, same lead price, intake converting at 15%. It now needs 134 leads, or $38,056 of media. The retainer, the intake team, and the software do not change: $61,556 total, $3,078 per signed case, 17.5% of the fee.

The firm did not find cheaper traffic. It answered the phone faster and followed up more times. Harvard Business Review research by Oldroyd, cited by Rankings.io, found that contacting a lead within five minutes makes connection 100 times more likely, and ALM Global's 2025 data reported by Andava found 67% of clients base hiring on response speed, with five-minute response producing 400% higher conversion. Only 7% of personal injury leads ever set a consultation at all, per the MyCase 2024 Legal Industry Benchmark Report. That gap is the cheapest inventory in the practice.

When a low cost per case is a bad business

A $900 cost per case is excellent if those cases carry $17,000 fees and terrible if they carry $2,500 fees. Cheap acquisition usually means you are winning the least contested part of the market, which is often the least valuable part.

• Case mix drift. Cheap dog bite and slip-and-fall volume pulls your blended cost per case down and your average fee down faster.
• Soft-tissue saturation. Signing more minor-impact auto claims raises headcount and cycle time without raising fee revenue.
• Referral leakage. Cases you sign but cannot staff get referred out at a fraction of the fee while carrying the full acquisition cost.
• Survivorship in the numbers. Firms reporting very low cost per case often exclude intake payroll, which is exactly the cost that produced the low number.

Track cost per case next to average fee per signed case. One without the other is theater.

When a high cost per case is fine

A $6,000 acquisition cost on a trucking case with a $200,000 expected fee is a 3% cost of sale, better than almost any business in America. Truck accident leads run $500 to $1,500 and up for a reason.

High cost per case is defensible when the fee is large, when the caseload is weighted by severity rather than volume, and when you have the capital to wait 18 months for the fee. It is indefensible when you are paying trucking prices for soft-tissue outcomes, which is what happens when broad-match campaigns go unmanaged. That is a campaign structure problem, and we cover the mechanics in Google Ads for law firms.

Channel mix changes the shape of the answer too. Organic search compounds and gets cheaper per case as rankings hold, while paid media resets to zero every month you stop paying. The full comparison lives in our SEO versus PPC breakdown, and the ranking mechanics in law firm SEO.

A measurement checklist before you benchmark yourself

• Define qualified lead in writing, and make intake apply the same definition every month.
• Attribute signed cases back to the month the lead arrived, never the month the case signed.
• Report media-only and fully loaded cost per case side by side, every month, on the same page.
• Include intake payroll, agency fees, CRM, call tracking, and dialer costs in the loaded figure.
• Segment by case type and by channel. A blended average hides both your best and worst channel.
• Pair every cost-per-case number with average fee per signed case for the same cohort.
• Record lead-to-consultation and consultation-to-signed separately. They fail for different reasons.
• Re-baseline quarterly. Legal ad spend more than doubled from $1.225 billion in 2017 to $2.642 billion in 2024 (American Tort Reform Association, 2025), so last year's cost curve is not this year's.

That last point is the whole market in one line. Advertising money doubled while the personal injury market grew at a 2.5% compound rate to $61.7 billion and is now growing 0.7% a year across 50,435 firms (IBISWorld, 2025). More money is chasing a flat market, and lead prices only move one way in that scenario. The firms pulling ahead are not outspending anyone. They are converting better.

Setting the budget that produces the number

Cost per case is an outcome. The inputs are budget, channel mix, and conversion rate, and the budget question has its own answer: most personal injury firms land at 5% to 12% of revenue, with high-growth firms at 16.5% (Rankings.io, 2026). We work through the tiers in how much a personal injury law firm should spend on marketing, including the cash-flow problem that comes with paying for cases today and collecting fees in 2027.

Where Inovista fits

Inovista builds the website and organic side of the programs these numbers describe, and wires the site to call tracking and intake so the cost per case in your board pack is measured rather than estimated. We do not run paid media, so the media cost lines above are not ours to defend. If you want the website and search side scoped against your own numbers, talk to us or read how we work with personal injury law firms.