IOLTA Trust Accounting for Law Firms: The Three-Way Reconciliation and Common Violations

Every lawyer who holds client funds is required to maintain a trust account, and the failure to manage it correctly is the leading cause of bar discipline in most states. The rules come from the ABA Model Rules of Professional Conduct (Rule 1.15, adopted with variations by each state bar), not from the IRS, but the accounting behind them is standard bookkeeping that a CPA handles better than a lawyer who learned trust accounting from a 2-hour CLE. The three core requirements are simple: keep client money separate from firm money, reconcile the trust account monthly using three independent totals, and move earned fees out promptly. The execution is where firms fail, and the consequences range from reprimand to disbarment.

What funds go into the trust account?

Client funds that the firm holds on behalf of someone else. The categories are defined by Rule 1.15 and include: retainers and advance fee deposits not yet earned, settlement proceeds before distribution, escrow funds held in connection with a transaction, funds received from opposing parties, court-ordered deposits, and any third-party funds passing through the lawyer’s hands in connection with a representation.

The critical distinction is between earned and unearned fees. A retainer deposited by a client is unearned at the time of deposit. It belongs to the client until the firm performs the work and generates an invoice. Once the work is performed and billed, the firm transfers the earned portion from the trust account to the operating account. Leaving earned fees in the trust account is itself a violation (commingling the firm’s money with client funds), which surprises lawyers who think the risk only runs in the other direction.

The one exception: a firm may keep a small amount of its own funds in the trust account solely to cover bank service charges. The amount varies by state but is typically limited to the monthly bank fee, not a buffer balance. Any amount beyond what is necessary for service charges is commingling.

What is an IOLTA account vs a regular trust account?

An IOLTA account is a pooled trust account where the interest earned goes to the state’s IOLTA foundation (a tax-exempt entity under IRC 501(a)) to fund legal aid and access-to-justice programs. The account is used for client funds that are “nominal in amount or held for a short period” (Rule 1.15(b)), meaning the interest that would accrue after bank costs and administrative overhead would not meaningfully benefit the individual client.

When a client’s funds are large enough and held long enough to generate meaningful net interest for the client, those funds go into a separate, individually titled trust account (not an IOLTA account). The interest in that account belongs to the client and is reported on the client’s tax return. The practical threshold varies, but a common rule of thumb is that funds expected to earn more than $50 to $100 in net interest (after bank costs) should go into an individual account.

The tax treatment of IOLTA interest is clean: the interest goes directly to the state IOLTA foundation, so it is not income to the firm or the client. The firm’s TIN should not be on the IOLTA account for interest-reporting purposes. If the bank mistakenly issues a Form 1099-INT to the firm for IOLTA interest, the firm should contact the bank to correct it, not report it as income and claim an offsetting deduction.

What does the three-way reconciliation require?

The three-way reconciliation is the monthly process that confirms the trust account is in balance. Three independent totals must agree:

The bank balance is the ending balance on the bank statement, adjusted for outstanding checks and deposits in transit. This is the same bank reconciliation every business does, but for the trust account specifically.

The book balance (or general trust ledger balance) is the firm’s own record of all deposits and disbursements in the trust account. This is the running balance in the firm’s accounting system (QuickBooks, Clio, CosmoLex, or a manual ledger) for the trust account.

The client ledger total is the sum of every individual client’s sub-ledger balance within the trust account. Each client who has funds in trust has a sub-ledger showing deposits received, disbursements made, and the current balance held for that client. The sum of all client sub-ledger balances should equal the book balance and the adjusted bank balance.

When the three totals agree, the trust account is in balance. When they do not agree, the discrepancy must be identified and resolved before the next month’s reconciliation. Common causes: an earned fee was transferred to operating but not posted to the client’s sub-ledger, a deposit was credited to the wrong client, a check cleared the bank but was not recorded in the books, or a bank error.

Most state bars require the reconciliation to be performed monthly, documented in writing, and reviewed by a designated attorney (the “trust account supervisor”). The documentation is retained for the state’s required period (5 years under the ABA Model Rule, 7 years in New York and Illinois, varying by state) and is subject to inspection during a bar audit.

What are the most common compliance failures?

Trust account violations cluster around five patterns, and all of them are preventable with basic bookkeeping discipline.

Commingling is the most common and most serious. It occurs in two directions: depositing personal or firm funds into the trust account (other than the bank-fee allowance), and leaving earned fees in the trust account after they have been billed and should have been transferred. Both contaminate the separation that the trust account exists to maintain.

Failure to reconcile is the second most common. Firms that reconcile quarterly, annually, or not at all eventually discover a discrepancy that has been growing for months. By the time it surfaces, the underlying error may be impossible to trace, and the firm cannot demonstrate that client funds were properly safeguarded during the gap.

Borrowing from trust to cover firm operating expenses is the most serious violation short of outright theft. Even when the firm intends to repay the amount (and does), the temporary use of client funds for firm purposes is a disciplinary offense. The intent to repay is not a defense. In most states, knowingly using client trust funds for personal or firm purposes results in disbarment.

Missing or incomplete client ledgers make the three-way reconciliation impossible. A firm that maintains a general trust ledger but does not track individual client balances within it cannot demonstrate that it holds the correct amount for each client. This is the bookkeeping failure that the three-way reconciliation is specifically designed to catch.

Wrong TIN on the IOLTA account is a compliance trap rather than an ethical violation, but it creates tax problems. If the bank uses the firm’s EIN or a partner’s SSN for interest reporting on the IOLTA account, the firm receives a Form 1099-INT for interest it never received (the interest went to the IOLTA foundation). The fix is to use the IOLTA foundation’s TIN on the account, which most state bars and banks handle during account setup.

How does a CPA help with trust accounting?

The CPA’s role is the bookkeeping and reconciliation that most lawyers do not have the time, training, or inclination to do correctly. The specific services:

Monthly three-way reconciliation. The CPA (or the firm’s bookkeeper under CPA supervision) reconciles the bank statement, posts all transactions, and confirms the three-way balance. This is the single most valuable trust accounting service, because the monthly discipline catches errors before they compound.

Trust account setup. Configuring the accounting software (QuickBooks, Clio Manage, CosmoLex, or PracticePanther) to maintain individual client sub-ledgers within the trust account, separate from the firm’s operating books. The chart of accounts must cleanly distinguish trust deposits from operating revenue.

Fee transfer processing. When the firm bills a client and the fee is earned, the CPA processes the transfer from trust to operating, posts it to the client’s sub-ledger, and records it in the operating books as revenue. The timing matters: a fee should be transferred within a reasonable time after it is earned (most state bars interpret “promptly” as within 30 days of billing).

Year-end reporting. The firm’s tax return does not report trust account balances as income (they are client funds, not revenue). But the CPA must ensure that earned fees transferred from trust during the year are properly reported as revenue, and that any interest earned on non-IOLTA individual trust accounts is attributed to the correct client.

Bar audit preparation. When the state bar’s trust account audit program requests records, the CPA produces the monthly reconciliations, client ledger reports, and supporting documentation. A firm with clean monthly reconciliations can respond to a bar audit in hours. A firm without them faces a multi-week reconstruction project.

How do overdraft notification programs work?

Most states participate in a trust account overdraft notification program, where banks are required to report any trust account overdraft (or any check presented against insufficient funds) directly to the state bar’s disciplinary authority. The report is automatic and does not require a complaint from a client.

An overdraft does not automatically trigger discipline, but it triggers an inquiry. The bar contacts the attorney, requests an explanation and supporting documentation (the monthly reconciliations, client ledger, and bank statements), and evaluates whether the overdraft indicates a systemic problem or a one-time error.

A firm with clean monthly reconciliations can demonstrate that the overdraft was caused by a timing issue (a check deposited and credited to the client’s ledger before the deposit cleared) and resolve the inquiry quickly. A firm without reconciliations faces a deeper investigation and the presumption that the trust account is not being properly managed.

What should I do next?

If your firm handles client funds and your trust accounting consists of checking the bank balance periodically, the three-way reconciliation is the first step. If you have never reconciled the trust account against individual client ledgers, the reconstruction project (going back to the last known clean balance) is the priority. If you are current on reconciliations but doing them manually, the efficiency gain from proper software setup pays for itself within a quarter.

• Law firm bookkeeping, the chart of accounts, client cost advances, WIP tracking, and monthly close that sit alongside the trust account
• Law firm partner compensation, the K-1, guaranteed payments, SE tax, and SSTB classification that determines how partner income is taxed
• Client trust interest and IOLTA reporting, how IOLTA interest flows to the bar foundation, when a separate account is required, and the 1099-INT reporting
• Trust fund recovery penalty, the parallel liability for employment taxes (the other “trust” obligation that attaches personally)
• IRS accuracy-related penalty, reasonable cause defense for any understatement on the firm’s return
• Multi-entity rental LLC bookkeeping, entity separation principles for law firm partners who hold investment real estate
• IRS installment agreement, payment structures for firms that owe after an exam
• FICA tip credit, another industry-specific credit (for firms that also operate hospitality businesses)

This guide is general information, not tax advice for your specific situation. Which points apply, and how, depends on your facts.