Accountant, bookkeeper, or CPA: Who does a law firm actually need?
A law firm needs a bookkeeper for daily records and trust reconciliations, an accountant for monthly reporting and advice, and a CPA for tax filings and independent assurance. Numetix covers the first two with expert review. Most small firms should start with one role done well, not all three at once.
QUICK ANSWER: WHO DOES A LAW FIRM NEED: AN ACCOUNTANT, A BOOKKEEPER, OR A CPA?
A bookkeeper records transactions, reconciles the operating and trust accounts, and keeps client ledgers current.
An accountant turns those records into monthly reports, profitability by lawyer or practice area, and planning advice, while a CPA adds tax filings and independent audits or reviews.
Whoever keeps the books, the lawyer stays responsible for client funds, so require a documented reconciliation that a lawyer reviews and signs.
Numetix is the expert-led, AI-powered, human-in-the-loop bookkeeping layer for law firms and other founder-led service firms, so trust reconciliations and monthly closes are prepared by software and reviewed by a named person. This guide separates the three roles, shows what each costs, and explains when a firm should add the next one.
What does a law firm bookkeeper, accountant, and CPA each do?
Role | What they do | What they do not do |
|---|---|---|
Bookkeeper | Records transactions, reconciles operating and trust accounts, and maintains client ledgers | Does not advise on structure, file returns, or give assurance |
Accountant | Prepares monthly statements, profitability by lawyer or practice area, budgets, and cash forecasts | Does not issue an audit opinion |
CPA | Prepares tax filings, advises on entity and compensation structure, and performs audits or reviews when needed | Does not replace daily bookkeeping |
In the United States, accountant is a general title, while CPA is a license issued by each state. Many firms use one CPA firm for both the accountant and tax roles, and a separate bookkeeper for daily work. An accountant for law firms, also searched as an accountant for lawyers, usually sits above the bookkeeper. A law firm bookkeeper is the person closest to the trust account, so experience with client ledgers matters more than the title.
Law firm CPA: When does a firm need one?
A law firm CPA becomes necessary when the firm needs tax filings, advice on entity and partner compensation, or an independent review for a lender or a merger. Solo and small firms often engage a CPA once a year and rely on a bookkeeper and an accountant the rest of the time. The CPA's time is shorter and cheaper when the books arrive reconciled.
Who should reconcile the trust account?
The person with the training to catch errors, reviewed by a lawyer. ABA Model Rule 1.15 requires lawyers to keep client property separate from their own and to preserve complete records, which the model text sets at five years after the representation ends, while each state sets its own period (the rule text). Model Rule 5.3 adds that a lawyer with supervisory authority must make reasonable efforts to ensure a nonlawyer's conduct is compatible with the lawyer's professional obligations. Outsourcing the bookkeeping therefore does not move the duty.
Our guide on how often to reconcile an IOLTA account covers the cadence, and the trust account glossary entry defines what the account is.
How much does a law firm accountant, bookkeeper, or CPA cost?
The Bureau of Labor Statistics reports a median pay of $50,670 a year for bookkeeping, accounting, and auditing clerks in May 2025 (bookkeeping clerks) and $83,680 a year for accountants and auditors (accountants and auditors). Those are wages only: payroll taxes, benefits, software, and supervision are extra, and a firm that hires inside the building gets one person with one set of skills.
Option | Structure | Cost signal |
|---|---|---|
In-house bookkeeper | One employee | BLS median wage of $50,670 a year, or $4,222.50 a month, before taxes, benefits, and software |
In-house accountant | One employee | BLS median wage of $83,680 a year, or $6,973.33 a month, before taxes, benefits, and software |
Outsourced bookkeeping with expert review | Monthly package | Priced by scope: commonly from a few hundred dollars to well over a thousand a month, depending on accounts and trust activity |
CPA firm | Engagement or retainer | Priced per engagement for tax, review, or audit; ask for the scope and fee in writing |
Treat the outsourced range as a starting point. Our guides on choosing a bookkeeping service for a small law firm and on in-house versus outsourced bookkeeping for law firms go deeper on the delivery model.
Which role should a law firm add first?
Firm situation | Start with | Add next |
|---|---|---|
Solo lawyer or two to three lawyers with one trust account | An outsourced bookkeeper who reconciles the trust account monthly | A CPA for annual tax work |
Several lawyers across practice areas | A bookkeeper plus an accountant for monthly reporting | Part-time CFO support for partner compensation planning |
Contingency practice with cost advances | An accountant who tracks advances and settlement timing | A cash-flow forecast by matter |
Firm preparing for a lender, merger, or sale | A CPA review or audit | Clean monthly close and reconciled trust records |
What should you ask before you hire an accountant for a law firm?
Ask this | A good answer | A red flag |
|---|---|---|
Who reconciles the trust account, and how often? | A monthly three-way reconciliation that a lawyer reviews | "We match the bank" |
Do you keep client ledgers? | Yes, by client and matter | Only a bank-level view |
Who reviews the books before they close? | A named reviewer, then the lawyer signs off | The provider is the only reviewer |
How do you handle my state's trust rules? | Specific knowledge of the firm's state requirements | Generic answers |
What happens at tax time? | A clean handoff package for the firm's CPA | No coordination with the CPA |
The full picture of the legal accounting stack is in our complete guide to bookkeeping for law firms, and the law firm accounting services guide covers the services side.
Frequently asked questions
Does a small law firm need a CPA?
Usually for tax filings and year-end advice, yes, even when a bookkeeper or accountant handles the monthly work. The CPA does not need to do the daily records. Handing over clean, reconciled books at year-end shortens the engagement and keeps the focus on advice.
Can a bookkeeper manage a law firm's trust account?
A bookkeeper can maintain the ledgers and prepare the reconciliation, but the lawyer remains responsible for the account and should review each reconciliation. Choose someone with trust accounting experience, since a general bookkeeper may miss rules that apply to client funds.
When should a law firm hire a full-time accountant?
When monthly reporting, several trust accounts, or partner compensation planning exceed what a part-time or outsourced team can review. Until then, a scoped outsourced service is usually the lower-cost route, because a salaried hire carries payroll taxes, benefits, and management time.
Numetix is the expert-led, AI-powered, human-in-the-loop bookkeeping layer that closes operating and trust accounts with a named reviewer behind every reconciliation. See our bookkeeping services built for law firms.
Numetix is an AI-first accounting firm. AI runs the bookkeeping, tax, payroll, and reporting workflow. Industry experts handle the judgment, month-end close, review, and advisory. We serve founder-led service firms across law, consulting, IT, healthcare, creative, and nonprofit. Headquartered in California, serving clients nationwide.
Suggested Readings
What is an IOLTA account? Meaning, rules, and how to keep one compliant
IOLTA reconciliation vs bank reconciliation
Attorney trust account vs escrow account
See what Numetix can do for you
Learn how the Numetix Portal streamlines communication, offers valuable insights, and saves you time so you can focus on growing your business.