7 Financial Mistakes New Law Firms Make in Year One

Kimberly Green | 2026-04-14

7 Financial Mistakes New Law Firms Make in Year One You spent three years in law school learning to practice law. You passed the bar exam. You hung your shingle and filed the paperwork. And then reality hits: you have no idea how to run the accounting side of a law firm. You're not alone. The American Bar Association reports that solo and small law firm closure rates spike highest between years one and three—and financial mismanagement is one of the vetted three reasons. Even worse, disciplinary actions against attorneys for violations of trust account rules (ABA Model Rule 1.15) are among the most common violations reported to state bar associations. Here's the brutal truth: a financial mistake in month one can create a tax liability in month twelve. And a trust account error can create a disciplinary complaint regardless of intent. Let's walk through the seven mistakes that hit hardest in year one—and how to avoid them. 1. Opening with No Separation Between Operating Funds and Client Trust Money This is the mistake that costs attorneys their licenses. On day one, most new attorneys open one business bank account and start depositing client retainers, settlement funds, and third-party payments into it. Then they pay their own bills out of the same account. This works until it doesn't. The moment client funds touch your operating account in the wrong way, you're in violation. Under ABA Model Rule 1.15, client trust money must be held in a separate, clearly identified trust account from the first deposit. Not after six months. Not after things get organized. From day one. The fix: Open two accounts before you take your first client. One for operating funds (your bills, your salary, your rent). One for trust funds (everything belonging to clients or third parties). Never, ever commingle them. Your bank should issue you two debit cards and two check registers. Use them accordingly. 2. Marking IOLTA Deposits as Income Instead of Liabilities This mistake is deceptively simple and catastrophically expensive. Your firm receives a $50,000 client retainer. Your bookkeeper (or you, if you're solo) enters it as income on the tax return. Your CPA calculates quarterly estimated taxes on that $50,000. You owe $12,500 in federal taxes alone—on money that was never yours to begin with. The retainer is a liability . It's a debt you owe to your client. When you bill against it, that portion becomes income. But the deposit itself? That's a balance sheet entry, not an income statement entry. The fix: IOLTA deposits and client trust funds must be classified as liabilities in...