How to Choose and Document a Trust Account Bank in 2026: The 11-Step IOLTA Banking Checklist Most Firms Skip Until the Bar Asks

🏦 Why the Bank Choice Is a Compliance Decision

Ask ten attorneys how they picked their IOLTA bank and nine will say some version of "it is where we already had our operating account." That is understandable and it is also how firms end up with a trust account at an institution that is not on their state bar's approved list, has no overdraft notification agreement in place, deducts monthly service charges straight out of client funds, and issues statements that make three-way reconciliation harder than it needs to be.

None of those are exotic failures. They are the ordinary consequence of treating a client trust account like a business checking account. The bar does not see it that way. In most jurisdictions, an IOLTA account may only be held at an approved or eligible financial institution, and that institution must have agreed in advance to report any overdraft on the account directly to the disciplinary authority.

📋 The 11-Step Trust Account Banking Checklist

1️⃣ Confirm the institution is on your state's eligible or approved list

Every jurisdiction that runs an IOLTA program publishes a list of eligible institutions. Check the list before you open, and re-check annually, because banks merge and eligibility can lapse. Multi-state firms need to check the list in every state where they hold trust funds, not just their headquarters state.

2️⃣ Verify the overdraft notification agreement exists and get a copy

This is the single most-skipped step. Ask the bank for written confirmation that it maintains an overdraft notification agreement with your state bar or IOLTA program covering your specific account number. Save it to the firm's compliance file.

3️⃣ Register the account to a named, designated licensee

Several jurisdictions now require the account to be tied to a specific attorney of record with their bar license number on file at the bank. California, for example, has moved in this direction with its Notice to Financial Institutions requirement. Treat this as a standing task: whenever the designated licensee changes, the bank record changes the same week.

4️⃣ Name the account correctly on the bank's records

The account title must identify it as a client trust or IOLTA account, not simply "Firm Name Checking 2." The title is what protects the funds from firm creditors and what tells every downstream system that these dollars are not yours.

5️⃣ Settle the service-charge rule in writing

Reasonable account maintenance fees generally cannot be paid from client funds. Get the bank to bill service charges to your operating account, in writing, before the first statement arrives. Fixing this after the fact means a shortfall in trust and a correcting entry that will be asked about later.

6️⃣ Lock down signature and transfer authority

Decide who can sign checks, who can initiate transfers, and whether any non-attorney has authority. Document it. Then match those permissions inside your accounting system so the software enforces the same rule the bank does.

7️⃣ Disable overdraft protection and any sweep or link to operating

Overdraft protection that pulls from an operating account looks helpful and is a commingling event waiting to happen. The same is true of automatic sweeps, linked lines of credit, and any product that moves money between trust and operating without a human decision.

8️⃣ Confirm the statement cycle ends on the calendar month

A statement that closes on the 18th makes month-end three-way reconciliation needlessly painful. Ask for a calendar-month cycle. It costs nothing and saves an hour every month forever.

9️⃣ Confirm the interest remittance path

For IOLTA accounts, interest goes to the state bar foundation or equivalent, not to the firm and not to the client. Verify the bank is remitting correctly and that remittance reports are reaching the right place. Keep copies.

🔟 Set up a clean data feed into your accounting system

You will reconcile this account every month for as long as the firm exists. A bank whose data imports cleanly into your legal accounting platform will save more hours over five years than any rate advantage.

1️⃣1️⃣ Write it all down in a one-page account profile

One page per trust account: institution, account number last four, account title, designated licensee and bar number, overdraft agreement date, service-charge arrangement, authorized signers, statement cycle, interest remittance destination, and the date each was last verified. Review it annually and whenever a person or a bank changes.

🔍 What a Compliance Reviewer Actually Asks For

When a state bar compliance program examines a firm, the requests are remarkably consistent across jurisdictions. They want the client ledger for each matter, the trust account journal, monthly bank statements, monthly three-way reconciliations showing bank balance tied to book balance tied to the sum of client ledgers, and documentation of the account itself.

Notice that four of those five are ongoing records and one is the account profile described above. Firms fail these reviews far more often on the ongoing records than on the setup. But a clean setup is what makes the ongoing records easy to produce, because when the account is correctly titled, correctly registered, free of sweeps and service-charge deductions, and cycling on the calendar month, the reconciliation has nothing unusual in it to explain.

⚙️ Where a Legal-Specific System Earns Its Keep

Generic accounting platforms can hold a trust account. They cannot tell you that a specific client's ledger went negative three weeks ago, because they were never designed to know that a client ledger is a thing. That distinction is the entire argument for legal-specific accounting.

Trust accounting rules vary by jurisdiction. This article is general guidance for law firm operations and is not legal or ethics advice. Confirm requirements with your state bar and IOLTA program.