For Law Firms

What Is IOLTA Three-Way Reconciliation? A Complete Guide for Law Firms

Updated June 16, 2026 · 7 min read · By QB Assistant

• 3 — balances that must match exactly
• 50 + DC — states that operate IOLTA programs
• Rule 1.15 — ABA Model Rule governing client funds

What are the three balances?

A standard bank reconciliation only compares two numbers: your bank statement and your book balance. Trust accounting requires a third number — proof that the money is allocated correctly to each client. That third leg is what makes it a three-way reconciliation.

• Bank balance — the trust account's ending balance from the bank statement, adjusted for outstanding checks and deposits in transit.
• Trust ledger (book) balance — the total in your firm's trust liability account in QuickBooks or your practice-management system.
• Client ledger total — the sum of every individual client's trust sub-ledger. No client balance may ever be negative.

Note: The golden rule of trust accounting: you can never spend one client's money on another client's matter. The client-ledger total is what proves you haven't.

Why does three-way reconciliation matter?

Client trust funds are governed by ABA Model Rule 1.15, which has been adopted in some form by every U.S. state bar. Mishandling client trust money is one of the most common causes of attorney disciplinary action reported by state bars — and many violations are not theft, but bookkeeping errors that go undetected because no one reconciled the three balances.

A clean three-way reconciliation is your evidence that funds are intact. If a balance is off, it points to a specific, fixable problem — a bank error, a missing client allocation, or a disbursement coded incorrectly — before it becomes an ethics complaint.

How often should a law firm reconcile its IOLTA account?

Most state bars require periodic three-way reconciliation, and monthly is the widely recommended standard. Reconcile after each bank statement closes, and always investigate a discrepancy the same month it appears — small errors compound quickly when client funds move in and out.

Common reasons the three balances don't match

• A disbursement was coded to an expense account instead of reducing the client's trust liability.
• Funds were moved between matters without a corresponding client-ledger entry.
• Bank fees were charged to the trust account (they should never be).
• A deposit was recorded to the wrong client, leaving one ledger negative.
• Outstanding checks or deposits in transit were not accounted for in the bank balance.

Can QuickBooks do a three-way reconciliation?

QuickBooks Online can hold trust funds in a dedicated liability account and track each client as a sub-customer, but it does not produce a true three-way reconciliation report on its own. You need to maintain per-client sub-ledgers and compare all three balances yourself. QB Assistant automates this: it reads your QuickBooks data and produces a three-way diagnostic that flags mismatches and any trust disbursement miscoded to an expense.