Law firm accounting has two sets of books running side by side. One is the firm's own operating ledger: fees earned, salaries, rent, partner draws. The other is money the firm holds for clients in trust, which is never the firm's money and is policed by the state bar, not just the IRS. Most of the serious problems we see at small and mid-sized firms come from blurring those two ledgers, or from treating a practice like an ordinary service business when its billing, cost advances and partner economics work differently.
A typical small business records a sale, collects cash and books it as revenue. A law firm may receive a $15,000 retainer that sits in trust for months, bill against it in pieces, advance $8,000 of expert fees on a contingency case it may never recover, and carry $120,000 of unbilled time that does not show up on a cash-basis balance sheet at all.
Three things make the work different:
ABA Model Rule 1.15, which nearly every state has adopted in some form, requires client funds to be kept in a separate trust account and complete records to be preserved for five years after the representation ends (some states set longer periods). The firm may keep only enough of its own money in trust to cover bank charges. Earned fees must be moved out promptly, and unearned fees must stay in.
States add their own layers. California, for example, now requires every licensee to register client trust accounts each year and complete a self-assessment under its Client Trust Account Protection Program. Check your own bar's rules, because reconciliation frequency and audit procedures vary.
Every month, three numbers have to agree:
Example: the bank statement shows $212,400. There is a $5,000 deposit in transit and $17,400 of uncleared checks, so the adjusted bank balance is $200,000. The trust journal shows $200,000. The client ledgers add up to $199,750. The $250 gap usually means a disbursement was posted to the journal but not to a client ledger, or a bank fee came out of trust. Find it and fix it before closing the month. A client ledger with a negative balance is a red flag: it means one client's money was used for another.
We fold this into the firm's normal month-end close and reconciliation routine so it never waits until the bar sends a letter.
Firms that want this handled by specialists often use outsourced bookkeeping built around law firm trust accounting.
| Billing model | When revenue is earned | Where cash sits first | Main accounting risk |
|---|---|---|---|
| Hourly | As work is performed | Operating account (or trust if retainer) | Unbilled WIP and write-downs |
| Advance retainer | As fees are earned against it | Trust account | Moving fees out too early or too late |
| Flat fee | Per the engagement terms and state rules | Often trust until earned | Some states treat flat fees as unearned until work is done |
| Contingency | On settlement or judgment | Settlement proceeds go to trust | Case costs advanced for years |
| Subscription or evergreen retainer | Monthly, as service is provided | Varies | Refund obligations on unused balance |
Track three ratios every month for each timekeeper and practice group:
If an associate records $40,000 of time at standard rates, the firm bills $34,000 and collects $30,600, overall realization is 76.5%. That 23.5% gap is the most actionable profit number in the firm. Aged WIP over 90 days and receivables over 120 days usually explain most of it. Our post on KPI reporting for professional services firms covers how to build these into a monthly dashboard.
Bill monthly, not at matter close. Put payment terms in the engagement letter, accept card and ACH through a trust-compliant processor that deposits earned fees to operating and retainers to trust, and review the aging report at every partner meeting. If collections are chronically slow, a dedicated accounts receivable service is often cheaper than the write-offs.
On contingency matters the firm pays filing fees, deposition transcripts and expert witnesses up front, then recovers them from the settlement. For tax purposes, the IRS and most courts treat these advances as loans to the client, so they are generally not deductible when paid. They are recorded as an asset (client cost advances receivable) and cleared when the case resolves. If the case is lost and the costs are truly unrecoverable, they can then be written off.
Book these to a dedicated balance sheet account with a sub-ledger by matter. A firm with 40 open contingency cases averaging $6,000 in advanced costs has $240,000 tied up, which is a real working-capital line for the partners and the bank.
Case costs on hourly matters (copying, couriers, court fees) should be tagged to the matter and billed through, not buried in office expense.
Most small and mid-sized law firms use the cash method for tax. A law practice organized as a C corporation can still use cash if it qualifies as a personal service corporation under IRC Section 448, regardless of size. Partnerships with a C corporation partner face the gross receipts test. For management reporting, run accrual-basis or modified-cash reports anyway, because cash-basis books hide WIP and receivables, the two biggest assets most firms own. IRS Publication 538 explains the method rules.
For payments made in 2026, the One Big Beautiful Bill Act raised the general Form 1099-NEC threshold to $2,000. The 2026 IRS instructions state that attorneys' fees of $2,000 or more go in box 1a of Form 1099-NEC, while gross proceeds of $600 or more paid to an attorney (for example, a settlement check payable jointly to the client and the firm) still go in box 10 of Form 1099-MISC. The usual exemption for payments to corporations does not apply to legal services. Law firms also issue 1099s to court reporters, investigators and expert witnesses. See our breakdown of 1099-MISC and 1099-NEC filing requirements for exceptions and deadlines.
Law is a specified service trade or business, so the 20% qualified business income deduction phases out for partners above the income threshold. For 2026 the phase-out starts at $201,750 of taxable income ($403,500 married filing jointly), and the OBBBA widened the phase-in range to $75,000 ($150,000 joint). A partner with $260,000 of taxable income (single) is partway through that range and gets a reduced deduction. Details are in the IRS QBI deduction overview and our Section 199A deduction guide.
Draws are not salary for partners in a partnership. They reduce capital, and each partner's share of income flows through on a K-1 whether or not it was drawn. Firms that let draws run ahead of allocated income end up with negative capital accounts and awkward buyouts. Keep tax-basis capital accounts current every year; our post on partnership capital accounts and Schedule K-1 reporting walks through the mechanics. If the firm needs help modeling compensation formulas or partner buy-ins, that is typically a job for a fractional CFO who works with law firms.
Embezzlement at law firms is usually an inside job by a long-tenured bookkeeper with full access. With a staff of five, you cannot fully segregate duties, but you can split the critical ones:
Our fraud prevention basics cover more controls that scale down to small offices.
Legal software splits into three groups. The right choice depends on firm size and who keeps the books.
| Option | Typical fit | Trust accounting | Notes |
|---|---|---|---|
| Clio Manage | Solo to mid-size | Trust ledgers and requests in the practice management system | Syncs with QuickBooks Online and Xero for the general ledger |
| CosmoLex | Solo and small firms | Built in, with a full general ledger | Practice management and accounting in one system |
| LEAP | Small firms | Built in | Strong document automation |
| PracticePanther, MyCase, Smokeball | Small firms | Trust tracking in the platform | Usually paired with QuickBooks Online |
| QuickBooks Online plus LeanLaw | Firms with an outside bookkeeper | Through LeanLaw | Familiar ledger for CPAs, needs a legal add-on |
| Aderant, Elite 3E | Large firms | Enterprise trust modules | Requires dedicated finance staff |
Questions we ask before recommending a system:
For a wider comparison of cloud tools, see our guide to cloud accounting and practice management software.
Many firms under 30 lawyers cannot justify a full-time legal accountant but need more than a part-time bookkeeper. A common setup is an outsourced team that handles daily entries, trust reconciliations and billing support, with a US CPA reviewing monthly and handling tax. Offshore accounting solutions lower the cost of that daily work, which is why US firms increasingly use them; the benefits of offshore bookkeeping post explains the trade-offs.
Client confidentiality is the gating question. Any outside team should work in the firm's own systems with named user accounts, multi-factor authentication and no local downloads. Ask for the specific data security controls for offshore bookkeeping in writing, and keep trust disbursement approval with a partner.
Yes, but QuickBooks alone does not stop a client ledger from going negative or produce a three-way reconciliation out of the box. Most firms pair it with a legal add-on such as LeanLaw or keep trust in practice management software and sync summaries to QuickBooks.
Monthly is the standard we recommend and what many state bars require. The ABA's model records rule uses quarterly as a baseline, but a monthly cycle catches errors while the bank detail is still fresh.
A trained bookkeeper can handle daily entries and reconciliations. A CPA should review trust reports, prepare partnership or corporate returns, and advise on partner compensation, 199A and entity questions.
No. Interest on a pooled IOLTA account goes to the state's IOLTA program to fund legal aid, so it is not reported as firm income. Funds large enough to earn meaningful interest for one client usually go in a separate interest-bearing trust account for that client.
At minimum: the three-way trust reconciliation, an accrual-basis P&L by practice group, WIP and receivables aging, realization by timekeeper, and a cash forecast. Partner capital and draw balances should be reviewed quarterly.
Madras Accountancy supports US law firms and the CPA firms that serve them with trust reconciliations, billing support, monthly close and tax preparation. Talk to our team about a setup that fits your practice.
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