Law Firm Accounting: A Practical Guide to Trust Money and the Firm's Books
Law firm accounting means keeping two sets of records: the firm’s own books, and separate records of money the firm holds for clients in trust. The firm’s books show what it earns, spends and owns; the trust records show, client by client, money that belongs to someone else until it is earned or paid out.
The firm’s own books work like any small business’s. Trust money is what makes legal accounting different, and the rules for it differ by state, so each point below names the rule it comes from.
What makes accounting for law firms different
Client money stays apart from the firm’s money
The ABA’s model rule, which binds only where a state adopts it, keeps client property separate from the lawyer’s own, with client funds in a separate account ABA Model Rule 1.15(a) [1]. New York treats a lawyer holding other people’s money as a fiduciary and bars commingling it with the lawyer’s own New York, 22 NYCRR 1200.0 Rule 1.15(a) [2]. Florida requires a separate trust account, clearly labeled as one R. Regulating Fla. Bar 5-1.1(a)(1) [3].
So a deposit into trust is not fee income. In the firm’s books it is matched by a liability: money owed to clients. Intuit’s help for QuickBooks Online, for example, records client retainers in a liability account, with a separate trust bank account where the firm keeps the money apart [4].
The firm’s own money may sit in trust only in narrow cases. The ABA model allows it only to pay bank service charges on the account ABA Model Rule 1.15(b) [1]. Illinois also allows enough to meet a minimum balance Ill. RPC 1.15(c) [5].
Fees paid in advance
Under the ABA model, fees and expenses paid in advance go into trust and come out only as fees are earned or expenses incurred ABA Model Rule 1.15(c) [1]. States treat flat fees differently. California lets a flat fee paid in advance go into the operating account if the client gets written disclosures Cal. RPC 1.15(b) [6]. Illinois sends fixed fees and engagement retainers to the lawyer’s own account Ill. RPC 1.15(d) [5].
Earned money has a deadline too. California requires the lawyer’s share to be withdrawn at the earliest reasonable time after it becomes fixed Cal. RPC 1.15(c)(2) [6]. In California a disputed portion stays in trust until the dispute is finally resolved Cal. RPC 1.15(c)(2) [6]; the ABA model rule keeps a disputed amount separate until resolved ABA Model Rule 1.15(e) [1].
A ledger for every client
The ABA’s model records rules call for a journal of every trust deposit and payment ABA Model Trust Account Records Rule 1(a) [7] and a ledger for each trust client ABA Model Trust Account Records Rule 1(b) [7]. Florida requires a ledger card or page for each client or matter R. Regulating Fla. Bar 5-1.2(b)(7) [8].
Regular reconciliation
The schedule differs by state. California requires a monthly balancing of the client ledgers, the account journal and the bank records Cal. RPC 1.15, Standards (1)(d) [6]. Florida compares the reconciled trust balance with the total of the client ledgers every month R. Regulating Fla. Bar 5-1.2(d)(1)(B) [8]. Illinois requires three-way reconciliation reports at least quarterly Ill. RPC 1.15A(b)(7) [9]. In California, the licensee designated for each trust account performs or supervises its monthly reconciliation California, State Bar Rule 2.5(E) [10].
The firm’s own books
The operating side is ordinary double-entry bookkeeping. A general ledger records every transaction in the accounts listed in the firm’s chart of accounts: the operating bank account, fees clients owe, expenses, fee income and the owners’ capital.
A law firm’s general ledger accounts add a few that other businesses rarely need: the trust bank account and the matching liability to clients. A firm that pays costs on a client’s behalf, such as filing fees, and bills them back can track those in an account of their own.
Cash or accrual accounting
Cash basis records fee income when the client pays. Accrual basis records it when the firm bills, and records costs when they are incurred rather than when they are paid. The two give different profit figures for any month with unpaid invoices. Legal products with their own ledger can report either way: CosmoLex’s balance sheet runs on a cash or accrual basis [11], and so does MyCase Accounting’s general ledger report [12]. Money in trust is not the firm’s income until it is earned. On a cash basis the fee is recorded when it moves to the operating account; on an accrual basis, when it is billed.
How a legal fee moves through the books
The trust bank balance and the amount owed to clients match at every step, and the client’s ledger shows the same figure. Checking those three figures against each other is what a three-way reconciliation does.
The order matters. Taken out before it is earned, the fee would be client money in the firm’s hands. Left in trust after it is earned, it would be the firm’s money mixed with the client’s, which the ABA’s comment describes as normally not allowed ABA Model Rule 1.15 cmt. [2] [13]. The ABA’s model records rules allow an electronic transfer of earned fees to the lawyer only when they are not in dispute ABA Model Trust Account Records Rule 2, Comment [14], and Florida sets a similar limit R. Regulating Fla. Bar 5-1.2(e) [8].
Records, reports and retention
How long trust records are kept differs by state. Florida keeps them for six years after a representation ends R. Regulating Fla. Bar 5-1.2(f) [8], Illinois for seven Ill. RPC 1.15A(a) [9] and Texas for five Tex. Disciplinary R. Prof'l Conduct 1.15(a) [1.14(a)] [15].
Some states add yearly reporting. Florida lawyers file a trust accounting certificate each year R. Regulating Fla. Bar 5-1.2(d)(5) [8]. California licensees report each year whether they handled client funds; those responsible for client funds also register each trust account and complete a self-assessment California, State Bar Rule 2.5(A)(1)-(3) [10]. A California licensee the State Bar selects must also complete a compliance review by a State Bar-approved CPA, at the licensee’s expense California, State Bar Rule 2.6(A) [10].
The rules describe records, not tools. Florida and Illinois accept records kept digitally, as long as they can be produced or printed R. Regulating Fla. Bar 5-1.2(b) (introductory text) [8]Ill. RPC 1.15A(b) (closing sentence) [9]. A spreadsheet can hold the records; software ties each entry to a client and builds the reconciliation reports.
Where software fits in law firm accounting
Legal accounting software keeps a ledger for each trust client, tracks every deposit and payment against a matter, and moves earned fees from trust to operating when an invoice is paid. Products split on where the firm’s general ledger lives.
- A ledger built into the legal product. Clio includes Clio Accounting on every plan [16]. PracticePanther keeps its general ledger on Business Pro only [17], and CosmoLex on Pro only [18].
- A ledger sold as an add-on. MyCase Accounting, sold with Pro or Advanced, costs from $39 per user per month, for each user given an accounting license, billing term not stated [19–24].
- A legal product on top of QuickBooks Online. LeanLaw requires QuickBooks Online and posts its trust entries to the firm’s trust bank and liability accounts there [25]. Smokeball keeps billing and trust ledgers and leaves the general ledger to QuickBooks Online [26].
Several products let an outside accountant work in the books. QuickBooks Online plans from Simple Start up include free accountant firm users [27]. Clio Starter includes one free accountant license [16], and MyCase Accounting adds a free license for an outside accountant [22].
The law firm accounting software comparison costs each route for a five-user firm. The trust accounting software comparison shows where three-way reconciliation starts, the law firm bookkeeping software guide covers the general ledger alone, and QuickBooks for lawyers covers the QuickBooks Online route.
Every price here is labeled Published, Estimate or Not published and listed with its sources below. Read how we research prices and how we estimate prices.
Frequently asked questions
What is law firm accounting?
It is the firm's own bookkeeping, a general ledger of income, expenses, assets and owners' equity, plus separate records of money the firm holds for clients in trust. The trust records show each client's balance, and that money is not the firm's until it is earned or paid out.
How is accounting for law firms different from other businesses?
Mainly because of client trust money. Under the ABA's model rules and Florida's rules, client funds are kept in a separate account, apart from the lawyer's own money, with a ledger for each client. Advance fees stay in trust until earned under the ABA model, and states set their own reconciliation and retention rules.
What is the difference between cash and accrual accounting for a law firm?
Cash basis records fee income when the client pays. Accrual basis records it when the firm bills, and records costs when they are incurred. The two give different profit figures whenever invoices are unpaid. Money in trust is not the firm's income until it is earned. On a cash basis the fee is recorded when it moves to the operating account; on an accrual basis, when it is billed.
How are legal fees recorded in accounting?
An advance payment goes into trust and is recorded as money owed to the client. When the work is done and billed, the earned amount moves from trust to the operating account and becomes the firm's money. Rules differ by state: California lets an advance flat fee go to operating with written disclosures, and Illinois sends fixed fees to the lawyer's own account.
Do law firms need accountants?
In California, the licensee designated for each trust account performs or supervises its monthly reconciliation, and a licensee the State Bar selects must complete a compliance review performed by a State Bar-approved CPA. Software lets an outside accountant work in the firm's books: QuickBooks Online plans from Simple Start up include accountant firm users, and Clio Starter and MyCase Accounting each include a free accountant license.
Sources
- American Bar Association: Rule 1.15, Safekeeping Property, as of October 2, 2026. ABA Model Rule (not binding until a state adopts it)
- New York: Rule 22 NYCRR Part 1200, Rule 1.15, Preserving Identity of Funds and Property of Others; Fiduciary Responsibility; Commingling and Misappropriation of Client Funds or Property; Maintenance of Bank Accounts; Record Keeping; Examination of Records, as of October 31, 2026. Court rule
- Florida: Rule 5-1.1, Trust Accounts, retrieved November 10, 2026. Court rule
- QuickBooks Online: Record retainer deposit, L6B5RsY6l US en US, retrieved November 10, 2026
- Illinois: Rule 1.15, General Duties Regarding Safekeeping Property, retrieved November 10, 2026. Court rule
- California: Rule 1.15, Safekeeping Funds and Property of Clients and Other Persons (with Board of Trustees Standards), retrieved November 10, 2026. Court rule
- American Bar Association: ABA Model Rules for Client Trust Account Records (Rule 1 Recordkeeping Generally; Rule 2 Client Trust Account Safeguards), as of June 15, 2025. ABA Model Rule (not binding until a state adopts it)
- Florida: Rule 5-1.2, Trust Accounting Records and Procedures, retrieved November 10, 2026. Court rule
- Illinois: Rule 1.15A, Required Records, retrieved November 10, 2026. Court rule
- California: Client Trust Account Protection Program (CTAPP), retrieved November 10, 2026. Rule of the State Bar
- CosmoLex help: Accounting primary, balance sheet report, retrieved November 10, 2026
- MyCase: General ledger report, retrieved November 10, 2026
- American Bar Association: Rule 1.15, Safekeeping Property, as of October 14, 2025. ABA Model Rule (not binding until a state adopts it)
- American Bar Association: ABA Model Rules for Client Trust Account Records (Rule 1 Recordkeeping Generally; Rule 2 Client Trust Account Safeguards), as of June 13, 2025. ABA Model Rule (not binding until a state adopts it)
- Texas: Rule 1.15 (formerly 1.14), Safekeeping Property (Texas Disciplinary Rules of Professional Conduct), retrieved November 10, 2026. Court rule
- Clio: Pricing, as of October 28, 2026
- PracticePanther help: what additional features does pantheraccounting plus provide that..., retrieved November 10, 2026
- CosmoLex help: Subscription management, compare plans and features, retrieved November 10, 2026
- MyCase: Pricing, retrieved November 10, 2026
- MyCase: Features, legal accounting software, retrieved November 10, 2026
- MyCase: How to add accounting subscription to mycase, retrieved November 10, 2026
- MyCase: How to add free accountant license to mycase accounting, retrieved November 10, 2026
- MyCase: How to cancel an accounting add on subscription to mycase, retrieved November 10, 2026
- MyCase: Performing bank reconciliations in mycase accounting, retrieved November 10, 2026
- LeanLaw help: Leanlaw trust account setup, retrieved November 10, 2026
- Smokeball help: QuickBooks Online Integration, retrieved November 10, 2026
- QuickBooks Online: Learn usage limits quickbooks online, L6THMltE4 US en US, retrieved November 10, 2026