Which practice areas in your law firm are actually profitable

A 12-attorney firm we work with reviewed its annual Profit and Loss report (P&L) at the end of the fiscal year. Total revenue was $2.4 million. The firm margin before partner draws was 59 percent. The managing partner planned to add two junior associates, one in litigation and one in employment, where case volume was growing.

Before those hires were finalized, we ran the numbers by practice area. Corporate carried a 71 percent margin. Real estate closings were at 68 percent. Litigation was at 51 percent, with $112,000 of write-offs concentrated in four cases. Employment was at 45 percent and had produced more write-offs in each of the past three quarters.

The firm was profitable. The two practice areas targeted for expansion were the two producing the thinnest margins.

Why firm-level P&L hides this

A single-line P&L is the right format for the firm’s bank relationship, its accountant at year-end, and a general read on whether the firm is making money. It is not enough to make decisions about where to grow, which practice areas to invest in, or whether attorney compensation is sustainable in each group.

The aggregate number blends the strongest areas with the weakest. When corporate runs at 71 percent and employment runs at 45 percent, the blended firm margin sits somewhere between them and neither number is visible on its own.

Four things cause that gap.

Attorney time not coded to practice area. When a senior partner splits time between corporate transactions and employment matters, that time belongs in two places on the books. In most firms it is pooled at the timekeeper level and never separated by practice area. The result is a blended cost per hour that belongs to no specific group.

Overhead split by headcount, not by actual use. Litigation generates costs that transactional work does not: court reporter fees, filing fees, expert witness retainers, and process server invoices. When overhead is divided evenly across all attorneys, the transactional practices absorb costs they never generated. Their margins look lower than they are. Litigation’s margin looks higher.

Write-offs recorded firm-wide, not by practice area. A contingency matter that settles below the billed amount, or a client who stops paying, creates a write-off. Most firms record those as a single line at the firm level. That hides where write-off risk concentrates, which is typically in contingency litigation and disputed employment cases.

Referral fees and co-counsel costs pooled at the firm level. When the firm refers a case out and receives a referral fee, that income typically goes into a general revenue account. When the firm pays co-counsel on a retained case, that cost goes to general overhead. Both belong to the practice area where the matter originated.

What the numbers showed by practice area

Here is what the breakdown showed for the same fiscal year in which the firm-level margin appeared at 59 percent.

Litigation produced $112,000 in write-offs, roughly 13 percent of its billed revenue. Employment produced $60,000, about 17 percent. Together, those two practice areas accounted for $172,000 of the firm’s total $194,000 in write-offs.

Corporate and real estate combined produced $22,000 in write-offs on $1.2 million in revenue, less than 2 percent.

Why this matters before hiring

Every attorney hired into a practice area changes that area’s economics. A junior associate adds salary, benefits, and malpractice insurance. The practice area needs to generate enough additional revenue to cover those costs and maintain its margin.

At 51 percent, with $112,000 of write-off exposure, litigation’s capacity to absorb a new hire is limited without first addressing why write-offs concentrated in four cases. At 45 percent, employment’s margins are thin enough that the practice area may already be subsidized by the rest of the firm. Adding a junior associate who requires supervision time from senior partners, without first raising billing rates or reducing the write-off rate, pushes the area further behind.

A managing partner who makes hiring decisions from a 59 percent firm-level margin may reach the wrong conclusion. One who makes those decisions from a practice-area breakdown sees what the firm can actually sustain.

What practice-area bookkeeping looks like in practice

For law firm clients, we set up class tracking in QuickBooks with a class for each practice area. Every matter is tagged to its class when opened. Time-based costs are pulled from the firm’s billing system and allocated to the matching class. Direct costs, filing fees, expert invoices, and co-counsel payments are coded to the matter and rolled up to the practice area.

The result is a monthly P&L by practice area that runs alongside the firm-level P&L. Managing partners see both: the aggregate figure that shows the firm’s overall position, and the practice-area breakdown that shows where it comes from.

Best practices for law firm partners

A few things that keep practice-area books accurate over time:

• Set up a QuickBooks class for each practice area before the fiscal year starts. Retrofitting mid-year requires historical cleanup that takes time and introduces errors.
• Code every direct expense (filing fees, court reporters, expert retainers) to the matter when the invoice arrives, not to a general overhead bucket. The cost belongs to the practice area that generated it.
• Pull write-offs by practice area at the end of each quarter. A rising write-off rate in one group is a signal that billing rates, case selection, or client creditworthiness needs review before the next year’s budget is set.
• Run a P&L by practice area at every partner meeting, not only at year-end. Margin compression is easier to address when it shows up over a quarter than when the year is already closed.
• Before hiring into a practice area, compare that area’s current margin to the all-in cost of the proposed hire. If the area cannot absorb the cost without a billing rate increase or caseload expansion, plan for that first.

Three questions worth asking

If you are not sure how practice-area profitability is tracked today, three questions to bring to whoever manages your books:

1. What is the net margin on each practice area this year, after direct costs, allocated overhead, and write-offs, and is that number calculated by practice area or estimated from the firm-level P&L?
2. Where did write-offs concentrate in the past 12 months, and are they tracked to the matter and practice area level or recorded as a single firm-wide line?
3. Before the next hiring decision, what does the practice-area P&L say about whether that group can support the additional cost?

If those answers are uncertain, the firm is making growth decisions from a blended number. The fix is a process change, not a software upgrade: class tracking in QuickBooks and a consistent habit of assigning costs to the right place.

If you want a second set of eyes, send us your current chart of accounts and the most recent firm P&L. We will tell you what it would take to produce a clean practice-area breakdown from your existing data.