A personal injury firm’s profit margin is what remains after the firm pays for everything it spent to produce its fees, including the cases that produced none. The contingency percentage in the fee agreement describes the firm’s share of one recovery. It says nothing about margin, because it is calculated before advanced costs, before the years the matter consumed, and before the matters that closed at zero.
The distance between those two numbers is where a contingency practice is actually run.
What sits between the fee and the profit
Four things, and they compound.
Advanced costs on the matters that resolved. Filing fees, experts, records, and depositions are the firm’s money until the case pays. Recovered costs return capital rather than generating profit, so a firm recovering nearly all of its advanced costs is breaking even on that line.
Advanced costs on the matters that did not. Every case that closes without a recovery leaves behind costs nobody reimburses, charged against the fees the successful cases produced.
Time spent, including on the losses. Attorney and staff hours are paid whether or not a case pays. A contingency firm’s cost of delivery is mostly payroll, and payroll is indifferent to outcomes.
Duration. A case resolving in eighteen months and one resolving in four years can produce identical fees and very different economics, because the second carried costs and consumed capacity for an additional two and a half years. Duration is the variable contingency firms track least and feel most.
A fifth item is not an expense and behaves like one. Money advanced on open cases is capital tied up, so a firm can be profitable on paper and unable to make payroll while the profit sits in an asset account waiting on a docket. Our post on tracking contingency case expenses when a case spans multiple years covers why those costs belong on the balance sheet.
Why published margin figures rarely help
Comparisons across personal injury firms break down for reasons that are structural rather than a matter of reporting quality.
Owner compensation is the largest. At most firms in this market, partner pay and firm profit are the same money divided by an internal decision. A firm paying its owners a modest salary reports a high margin; a firm paying market compensation reports a low one. Nothing about the underlying business differs.
Case mix is second. Soft tissue volume practice and catastrophic injury work have almost nothing in common economically: different cost per case, duration, resolution rate, and capital requirement. A single margin figure spanning both describes neither.
Accounting method is third. A firm expensing advanced costs as it pays them and a firm capitalizing them report materially different results from identical activity, particularly in a year of growing or shrinking case volume.
Which leaves your own numbers, computed consistently, as the benchmark that carries information. Our guide to improving profit margins at contingency firms covers the operating levers.
Computing your firm’s actual margin
Two views, and both are worth having.
Firm-level margin. Take fees collected in the period. Subtract all operating expenses, including full market compensation for working owners whatever the tax structure calls it. Subtract advanced costs written off on matters that closed without recovery. Do not subtract advanced costs on open matters, which are assets, and do not count cost reimbursements as revenue. What remains, divided by fees collected, is the firm’s margin. The owner compensation adjustment is what makes the figure comparable to anything.
Matter-level margin. For a closed case: fee received, less costs advanced and not recovered, less the cost of the time invested at loaded rates, divided by fee received. Then group closed matters by case type, referral source, and duration band.
The grouped view is the one that changes decisions. Firm-level margin tells you whether last year worked. Matter-level margin by case type tells you which intake to accept next month. Our post on matter profitability covers the calculation, and case closeout reporting covers what to capture at every close.
The three ratios that explain the margin
Margin is an outcome. These three tell you why it came out where it did.
Cost recovery ratio. Advanced costs recovered divided by advanced costs incurred, on closed matters. This is the closest thing a contingency firm has to a realization rate, and a persistent gap points at case selection or lien negotiation.
Effective hourly rate. Fee received divided by hours worked. It requires timekeeping on contingency matters, which many firms skip, and without it you cannot compare a contingency result to anything, including the alternative use of the same hours.
Case duration. Days from intake to disbursement, by case type. It is the variable most directly connected to how much capital the practice needs, and it is measurable from data you already have.
Each depends on costs and time being attributed to a matter as they occur. QuickBooks Online is where the resulting reports live, and QBO is a hard requirement for running LeanLaw. What LeanLaw does is upstream: costs and time arrive already tied to a client and a matter, so closed-case analysis is a report rather than a research project.
Frequently asked questions
What is a typical profit margin for a personal injury firm? Published figures vary too widely to be useful, because owner compensation, case mix, and cost accounting method differ so much between firms. Your own margin, computed consistently over several years, is the benchmark that carries information.
Is the contingency fee percentage the firm’s margin? No. It is the firm’s share of one recovery, before advanced costs, before the time invested, and before the matters that never resolved.
Do recovered case costs count as revenue? No. Recovering an advanced cost returns the firm’s own capital. Treating reimbursements as revenue overstates income and distorts margin.
How should owner compensation be handled? Deduct market-rate compensation for the work owners actually perform before computing margin. Otherwise the figure measures how partners chose to pay themselves.
Written by
Rachel Bondurant
Head of Brand and Content
Rachel Bondurant leads brand and content at LeanLaw, where she writes about legal billing, trust accounting, and the financial operations of modern law firms. Her work translates the realities of law-firm finance — billing workflows, IOLTA and trust compliance, and revenue leakage — into practical guidance for attorneys, firm administrators, and the accountants who support them.
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