LegalFirmTools

Law Firm Profit Calculator

Work out firm revenue from timekeeper capacity, subtract salaries and overhead, and find the billable hours needed to break even.

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Free · No sign-up · Runs in your browser

Firm revenue is capacity multiplied by rate multiplied by two percentages that most firms measure separately and rarely combine. Costs are largely fixed within a year. Between those two facts sits the number that determines whether the firm works: the billable hours required before anything is profit.

This calculator computes that break-even alongside profit, margin and profit per partner, from figures a firm already has.

Your numbers

Results update as you type. Nothing is sent anywhere.

Result

Operating profit

$1,537,312

Break-even billable hours

5,338.2

Collected revenue
$2,937,312
Gross value of time
$3,472,000
Total costs
$1,400,000
Profit margin
52.34%
Profit per partner
$512,437
Revenue per timekeeper
$367,164
Effective rate per hour
$262.26
Overhead ratio
14.3%

This tool performs arithmetic on the values you enter. It does not provide legal advice and does not create an attorney-client relationship.

Break-even hours show the total billable hours the firm must record before it covers salaries and overhead at the current realization and collection rates.

Profit per partner here is a simple division of operating profit. It is not a compensation formula and ignores capital accounts and tax.

How to use the law firm profit calculator

  1. Enter the number of fee-earning timekeepers and the billable hours each records.
  2. Enter the average rate across them.
  3. Enter realization and collection rates so revenue means cash.
  4. Enter salaries and overhead, and the partner count, then read the break-even.

What people use this for

  • Understanding what the firm needs to bill before it makes anything.
  • Modelling the effect of a hire on profitability.
  • Quantifying what a realization improvement is worth at firm level.
  • Preparing figures for a partnership meeting or a lender.

Worked examples

Every figure below is produced by running this calculator against the example inputs, so the numbers always match the tool.

A small firm

8 timekeepers at 1,400 hours each, $310 average rate, 90% realization, 94% collection, $980,000 salaries, $420,000 overhead, 3 partners.

Operating profit
$1,537,312
Break-even billable hours
5,338.2
Profit margin
52.34%

The same firm with better realization

Realization at 96% and collection at 98%, everything else unchanged.

Operating profit
$1,866,458
Profit margin
57.14%
Effective rate per hour
$291.65

Break-even hours is the number to know

It is the total billable hours the firm must record, at the current rate and current yield, before salaries and overhead are covered. Every hour after it contributes at a much higher rate, because the costs are already paid.

It is the figure to check before any commitment that raises fixed costs - a hire, a lease, a new practice area. Each of those raises break-even, and the increase is frequently larger than it feels when the decision is being made.

Realization is worth more than it looks at firm scale

A six-point improvement in realization across eight timekeepers billing 1,400 hours at $310 is worth over two hundred thousand dollars of revenue, with no additional hours worked and no rate increase.

That is why the two percentages are inputs here rather than an afterthought. At firm scale they are frequently the largest available lever, and unlike a rate rise they require nobody’s agreement but your own.

Methodology and assumptions

What this calculator does, and what it deliberately does not do.

  • Gross time value = timekeepers × hours each × average rate. Revenue applies realization and collection to it.
  • Profit is revenue minus salaries and overhead. Profit per partner divides operating profit by the partner count.
  • Break-even hours divide total costs by the effective revenue per hour after realization and collection.
  • The tool performs arithmetic or date counting on the values you enter. It does not interpret a rule, a statute or a contract.
  • Nothing you type is transmitted or stored - the calculation runs entirely inside your browser.

This website provides general informational and productivity tools and does not provide legal advice or create an attorney-client relationship.

The date and deadline tools count days exactly as you instruct them. They do not interpret court rules, statutes of limitation, filing requirements or any other legal authority, and they do not know the rules of your jurisdiction.

Always verify any date, fee, or calculation against the governing rule, the court calendar and your own professional judgement. If you need legal advice, consult a lawyer licensed in your jurisdiction.

Frequently asked questions

Should partners be counted as timekeepers?

If they bill, yes - include their hours and their rate in the averages. Their compensation should then appear in salary costs or be treated as profit, consistently either way.

What is a typical law firm margin?

It varies enormously with size, practice area and ownership structure. Your own trend across years is far more informative than any published benchmark.

Does this include partner compensation?

Only if you put it in salary costs. If partners are paid from profit, leave it out and read the profit-per-partner figure instead.

Why is break-even higher than I expected?

Because only the collected share of billed time counts toward it. At 90% realization and 94% collection, roughly one hour in six never reaches the break-even calculation at all.

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