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What Is an IOLTA Account? A Practical Guide

Published August 1, 2026 · Updated August 1, 2026 · 4 minute read

Learn what an IOLTA account is, whose money it holds, where the interest goes, and which records support responsible trust-account bookkeeping.

IOLTA stands for Interest on Lawyers’ Trust Accounts. It describes a pooled, interest-bearing trust account used for client or third-party funds that are too small in amount or expected to be held too briefly to justify a separate interest-bearing account for the individual owner. The interest is remitted through the jurisdiction’s IOLTA program rather than kept by the lawyer.

An IOLTA account is not the law firm’s operating account and its principal balance is not firm revenue. The lawyer must determine which funds belong in trust, which jurisdiction’s rules apply, when funds may be disbursed, and when earned funds may move to operating. Bookkeeping supports the records behind those decisions; it does not make the legal decision.

What makes an IOLTA account different?

Ownership

The principal belongs to clients or third parties until the lawyer is entitled and authorized to disburse it.

Interest

The financial institution sends pooled interest to the jurisdiction’s IOLTA program under that program’s rules.

Records

The firm needs trust-register detail, individual client or matter ledgers, bank support, and the reconciliations required by its jurisdiction.

What funds may be involved?

Examples can include advance fees or costs, settlement proceeds awaiting distribution, disputed funds, or other money held in connection with a representation. The correct treatment is jurisdiction- and fact-specific. The ABA’s Model Rule 1.15 states that client or third-party property must be kept separate from the lawyer’s property and that complete records must be preserved. State rules control the lawyer’s actual obligations.

Arizona’s official trust-account page explains that its program is based on Arizona Supreme Court Rule 43 and applies when pooled client funds cannot otherwise earn enough interest for the client to justify a separate account. Arizona also provides an approved-institution list, trust-account manual, forms, and a confidential helpline.

The basic recordkeeping structure

  • Trust bank record: the statement, cleared activity, and documented outstanding items
  • Trust register: the chronological book record of deposits, disbursements, transfers, and authorized administrative activity
  • Individual ledgers: the running balance for each client, matter, and applicable administrative ledger
  • Source support: deposit records, check images, transfer approvals, settlement support, and other documentation
  • Reconciliation packet: the reports comparing the adjusted bank, trust register, and ledger total as of one date

IOLTA is not the same as an operating account

Operating cash belongs to the firm and is used for payroll, vendors, taxes, owner activity, and other business expenses. IOLTA principal belongs to clients or third parties. Combining the two, or recording client funds as revenue merely because cash entered a bank account, can distort the firm’s financial statements and create a serious trust-account problem.

Why the bank balance is not enough

The bank can show how much money is in the account, but it does not show how much belongs to each client. A current bank balance also may include outstanding checks, deposits in transit, or activity that has not been posted correctly to the books. That is why a proper review compares independent records rather than relying on one screen.

What an IOLTA bookkeeper does

An IOLTA bookkeeping service can organize source documents, record authorized activity, maintain ledgers, prepare reconciliations, and identify discrepancies. The lawyer retains control of client money, approves disbursements, determines the applicable rules, and decides how unresolved legal or ethical questions will be handled.

For the recurring control process, use the three-way trust reconciliation checklist. To diagnose weak records before the next close, review these IOLTA bookkeeping mistakes and controls.

Frequently asked questions

Does every lawyer need an IOLTA account?

No universal answer applies. The need depends on whether the lawyer holds client or third-party funds and on the rules of the relevant jurisdiction. Consult the issuing bar, court, or IOLTA program.

Does the client receive IOLTA interest?

The pooled interest is generally remitted to the jurisdiction’s IOLTA program. Funds capable of earning net interest for an individual client may require different treatment under the applicable rules.

Can a bookkeeper decide when money leaves trust?

No. A bookkeeper records authorized transactions and prepares records. The lawyer or law firm controls disbursement decisions and remains responsible for trust property.

This guide is educational information, not legal, ethics, tax, or accounting advice. Requirements vary by jurisdiction and circumstance.

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