A law firm’s accounting has three jobs: keep the firm compliant, keep the partners informed, and get the bills paid. Most content about legal accounting covers the first job and waves at the other two. This guide covers all three: who does the accounting at law firms, what the best accounting software for law firms actually requires, and the discipline nobody writes about, accounts receivable.
Do Law Firms Have Accountants?
Almost all do, in a structure that scales with the firm:
- Solo and small firms typically self-manage daily bookkeeping in legal-specific software and retain an outside CPA for tax work and year-end review.
- Mid-size firms employ dedicated financial staff: a bookkeeper or billing clerk first, then a firm administrator or controller who owns the general ledger, billing operations, trust compliance, and financial reporting, usually with an outside CPA for tax.
- Large firms run full accounting departments under a CFO, with separate billing, collections, and financial analysis functions.
The role that transforms a growing firm is the controller or firm administrator: someone who owns the numbers full-time, runs the monthly close and reconciliations, manages the billing cycle, and gives partners real financial statements instead of a bank balance. Whoever holds the books, two constants remain: attorneys stay professionally responsible for trust compliance, and the accounting staff is only as effective as the systems they work in. Financial staff working in software that doesn’t understand matters, trust, or legal billing spend their week compensating for their tools.
What’s the Best Accounting Software for Law Firms?
The best accounting software for a law firm is built on a legal chart of accounts and a matter-centric ledger because a firm’s money only makes sense sorted by client and matter. The evaluation list:
- True firm accounting, not just billing. A double-entry general ledger, accounts payable, bank reconciliation, and financial statements are native to the platform.
- Trust accounting with safeguards. Client and matter ledgers, prevention of negative balances, three-way reconciliation, and audit-ready reports.
- Matter cost tracking. Advanced and soft costs are tracked to matters and recovered on bills, not lost in expense accounts.
- Integrated billing. Time, prebills, invoices, and payments in the same system as the ledger, so revenue, WIP, and A/R reconcile by construction rather than by heroics.
- Partner-grade reporting. Profitability by practice area, matter, and timekeeper; realization; WIP aging; and compensation-ready allocation reports.
- Controls and audit trail. Role-based permissions, approval workflows, and a record of who touched what, which is what lets a firm delegate financial work safely.
Generic small-business accounting tools fail this list at the first two items: no matter ledgers, no trust safeguards, no legal billing. They can hold a firm’s books the way a filing cabinet can hold a docket: technically, and dangerously.
What Is the Best Accounts Receivable Software for Law Firms?
Accounts receivable is where law firms quietly lose the money they already earned: bills that go out late, sit unpaid, and age past the point of collection. The best A/R software for a law firm is not a standalone collections tool; it’s the A/R capability inside the firm’s billing and accounting platform, evaluated on:
- A/R and WIP aging together. Unbilled work and unpaid bills are the same problem at different stages; the firm needs both aging reports side by side, by client, matter, and responsible attorney.
- Fast billing cycles. Electronic prebill routing and batch invoicing shorten the gap between work and bill, and newer bills get paid better than stale ones.
- Online payment on every invoice. Card and ACH links, with retainer replenishment, remove the client-side friction that ages receivables.
- Automated reminders with attorney visibility. Scheduled follow-ups on aging invoices, plus reports the responsible attorney actually sees, because collections at law firms fail politely and silently.
- Trust-aware application of payments. Payments applied against invoices, retainers, and trust correctly, with the ledger entries handled by the system.
“Work in progress is money you haven’t asked for yet. Accounts receivable is money you asked for and haven’t received. A firm that watches both ages neither.”
– Orion
Financial Management Built for Law Firms
Orion Financial Management is the accounting backbone for mid-size firms: legal general ledger, trust accounting, matter cost tracking, integrated billing with ePrebill Manager, ePay online payments, and WIP and A/R reporting partners actually read. See it at orionlaw.com or request a demo.
Content disclaimer to carry onto the page: This guide provides general information, not legal, tax, or accounting advice. Trust accounting requirements vary by jurisdiction.