What Is an IOLTA Account? A Guide for Law Firm Bookkeeping

Kimberly Green | 2026-03-06

What Is an IOLTA Account — and Why Law Firms Can't DIY Their Bookkeeping Your client sends you a $10,000 retainer. You deposit it. Your bookkeeper records it as revenue. At tax time, your accountant tells you that you owe taxes on $10,000 that isn't actually yours. Welcome to IOLTA hell. This scenario plays out every year in law firms run by people who think they can handle their own books. They can't. The reason is IOLTA—and the fact that IOLTA bookkeeping is backwards from every other kind of accounting. IOLTA Account Definition: What Attorneys Need to Know IOLTA stands for Interest on Lawyers' Trust Accounts. It's not a type of account you create. It's a set of bar association rules that govern how law firms hold client money. When a client gives you money—a retainer, a settlement amount you're holding, a deposit for expenses—that money doesn't belong to your firm. It belongs to the client. Your firm is a custodian. The money sits in a trust account, separate from your operating account. The interest earned on that account goes to the bar association's IOLTA program, which funds legal aid for people who can't afford lawyers. You don't keep it. The bar does. This is why it's called Interest on Lawyers' Trust Accounts. The interest is the whole point, from the bar's perspective. Why IOLTA Bookkeeping Is Backwards (And Why It Matters) Here's where most law firms go wrong: they record client deposits as revenue. In normal bookkeeping, when a client pays you, that's income. Deposit hits your bank. Revenue goes on your P&L. You report it to the IRS. End of story. IOLTA accounts don't work that way. A client deposit is a liability. You owe that money back to the client when the work is done. It's not income. It's not your money. Recording it as revenue creates a phantom tax bill on cash that was never yours to keep. Brandy Derrick, owner of Legally's Bookkeeping, describes it plainly: "The way that you do bookkeeping within the accounting software is almost backwards to the way everybody else does bookkeeping." She works exclusively with law firms and spends her days fixing exactly this problem. If you use a general bookkeeper or try to DIY your accounting, this is where it breaks down. A generalist accountant knows how to record customer prepayments. They don't know how to record IOLTA deposits, which are both a liability and subject to state bar audits. Bar Association IOLTA Audits: What Happens When You Get It Wrong Every state has its own IOLTA rules. Some are stricter than others. But they all have one thing in common: bar associations audit these...