Business Banking for Your Law Firm: Setting Up the Accounts

Most new solos open one bank account, run everything through it, and figure they'll "clean it up at tax time." That instinct is how a firm ends up with a shoebox of mixed receipts and an accountant's bill that costs more than the accounts ever would have. Worse, it quietly erodes the one thing your entity structure was supposed to protect: the line between you and the business.

Setting up your firm's banking is not glamorous, and it is not hard. But the order you do it in, and the choices you make on day one, save you real pain later. Here is how to think about it.

Separate the money before you do anything else

The moment your firm and your personal finances share an account, you have a problem on three fronts.

The first is liability. If you formed an LLC or a PC, the protection it offers depends partly on you treating the firm as a genuinely separate entity. Pay your rent out of the business account, buy groceries out of the firm card, and you hand any future adversary an argument that the firm and you are the same thing — the "alter ego" or "piercing the corporate veil" problem. Clean separation is cheap insurance.

The second is bookkeeping. Mixed accounts mean every transaction has to be sorted by hand into "firm" and "personal." Separate accounts mean your business statement is your bookkeeping starting point. Hours of reconstruction become minutes of categorization.

The third is appearance. When a client pays a retainer, the invoice they're paying and the deposit slip should both say your firm's name. When opposing counsel or a bank or a title company deals with you, "the firm has its own account" is the baseline of looking like a real practice rather than a side hustle.

So before you take a single client dollar: form the entity, get your EIN, then open accounts in the firm's name. If you haven't settled on a structure yet, that decision comes first — see choosing your business structure — because the bank will ask for your formation documents and EIN to open a business account. This whole sequence sits inside the larger arc of how to start your own law firm; banking is one of its load-bearing pieces.

The business operating account

This is the workhorse. Your operating account holds the firm's own money — earned fees, after they've moved out of trust; deposits for flat-fee work once earned; and everything you spend to run the practice. Rent, software subscriptions, bar dues, your malpractice premium, your own draw or salary: it all flows through here.

The operating account is also where most of your bank's fee structure will bite, so it's worth understanding what you're signing up for. Look at the monthly maintenance fee and what waives it (often a minimum balance), the transaction limits, wire and ACH costs, and what it costs to deposit cash if you ever take cash. Don't fixate on a teaser "free business checking" headline — read what happens after the introductory period and once you exceed the bundled transaction count.

Choosing a bank that actually fits a law firm

Any bank will take your deposit. Fewer banks make running a law practice easy. A handful of things separate the two.

Branch and human access. Trust deposits, certified checks, and the occasional large client payment sometimes need a branch and a person. If you'll never want to walk into a building, an online-only bank may be fine. If you handle real estate, estates, or anything with paper checks and wires, branch access earns its keep.

Fee structure. Already covered above, but it's a top-three factor. The cheapest sticker price is not always the cheapest account once you account for how you actually transact.

Online and mobile tools. Mobile check deposit, easy ACH and wire initiation, the ability to give your bookkeeper read-only access, and good downloadable statements. You will live in this interface.

Software integrations. This one is underrated. If your bank's transactions feed cleanly into your accounting software (and, ideally, your practice-management or legal billing tool), your monthly close gets dramatically shorter. Ask specifically whether they support a direct feed into the tools you plan to use.

Whether they understand trust accounts. Some banks open lawyer trust accounts every week and the staff knows exactly what you mean. Others will look at you blankly. The second kind will make opening — and every later question — harder than it needs to be. Ask directly: do you offer attorney trust accounts, and are you on our state's approved list?

That last point deserves its own section, because for the trust account, the bank isn't just a preference. In many states it's a requirement.

The client trust (IOLTA) account — at the bank level

You will keep money that isn't yours: unearned retainers, settlement funds passing through, advance costs. That money lives in a client trust account, and in most states an IOLTA account — Interest on Lawyers' Trust Accounts — where the interest is remitted to the state bar foundation to fund legal aid rather than to you.

Here we're only concerned with the banking setup — opening the account, at the right kind of institution. The rules governing what you may and may not do with the money inside it — how to track each client's balance, how to reconcile, what counts as commingling — are a separate discipline with real consequences, and they get their own treatment in the trust-accounting rules. Read that before you deposit a client's funds. This post stops at the account itself.

At the bank level, a few things are near-universal even though the details vary:

• The institution usually has to be approved or eligible. Most states maintain a list of financial institutions approved to hold IOLTA accounts — banks that have agreed to the program's terms, including remitting interest to the bar foundation and honoring overdraft-reporting requirements. Opening a trust account at a non-approved bank can put you offside. Check your state's list before you choose.

• You typically enroll the account in the IOLTA program. This is usually a short form, often coordinated between the bank and your state's IOLTA program, directing the interest to the bar foundation. The bank's trust-account staff will normally know the process; if they don't, that tells you something about the bank.

• It's titled as a trust account, in the firm's name, with your EIN or as the program directs. The account itself is clearly a client trust / IOLTA account, not a second operating account you happen to call "trust."

Because the specifics — which institutions qualify, the exact enrollment steps, interest remittance, whether a particular matter belongs in pooled IOLTA or a separate interest-bearing account — vary by jurisdiction, get them from your state bar and your state's IOLTA program / bar foundation directly. Don't take another state's rule, or a colleague's offhand summary, as gospel for yours.

A business card — and keeping firm spend off your personal cards

Once the operating account is open, get a debit card tied to it and, ideally, a business credit card in the firm's name. Two reasons.

One is the separation point again: every firm expense on a firm card is one less transaction you have to fish out of a personal statement and justify later. Software, filing fees, CLE, office supplies, the laptop — all of it should hit a firm card, not your own.

The other is data. A business card produces a clean, categorized record of firm spending that your accounting software can ingest directly. A credit card also gives you a short float and, often, an expense trail and rewards that a debit card won't. Just be disciplined about paying it from the operating account so the firm's books stay clean.

One hard line: never run firm expenses through the trust account's card or funds, and never put a personal expense on the firm card. The first is a trust-accounting problem (see the link above); the second reopens the commingling and veil-piercing risk you set all of this up to avoid.

Accepting client payments — and the trap in generic processors

Clients increasingly want to pay by card or bank transfer, and you should let them. But how you accept those payments matters more for a law firm than for almost any other small business, because of one specific danger.

A generic card processor — the default option most small businesses reach for — typically pulls its processing fee out of the same account the payment lands in. For an ordinary retailer that's fine. For a law firm, if a client's unearned funds are supposed to land in trust, a processor that skims its fee from that deposit has just taken money out of the trust account that wasn't yours to spend. That's a violation, and it can happen automatically, every transaction, without you doing anything wrong on purpose.

The fix is to use a payment processor built for law firms, or at least one that is genuinely IOLTA-aware. These tools let you route earned-fee payments to operating and unearned funds to trust, and — critically — they deduct their processing fees from your operating account, never from trust principal. Several established options exist; compare their current fees, the tools they integrate with, and how they handle the trust-versus-operating split before you commit.

The same caution applies to "just send me a Venmo" or a personal payment app. Convenient, untraceable for your books, and entirely the wrong tool for a firm taking client funds. Route client money through accounts and processors that produce a clean record in the firm's name.

Handing clean data to your bookkeeping

Everything above pays off at the same moment: the monthly close. If your operating account, trust account, and firm cards all live in the firm's name and feed into your accounting software, your bookkeeper — whether that's you, a part-timer, or a firm — starts each month with categorized, firm-only data instead of a reconstruction project.

A few habits make that real:

• Use the firm accounts and cards for firm things, every time. The discipline is the whole point.
• Connect the bank and card feeds to your accounting software early, while you have few transactions and it's easy to verify the setup is working.
• Keep the trust account's records separate and reconciled on their own schedule — that's where the trust-accounting rules come in, and they're stricter than ordinary bookkeeping.
• Save the digital paper: enrollment confirmations, signature cards, the IOLTA program letter. You'll want them when the bar asks, and they will eventually ask.

None of this is complicated. It's a sequence: form the entity, get the EIN, open an operating account at a bank that gets law firms, open the trust account at an approved institution, get a firm card, choose a law-aware way to accept payments, and wire it all into your books from the start. Do it in that order, once, and the firm's money plumbing mostly runs itself — which is exactly what you want, because your attention belongs on the law, not on untangling a year of mixed-up statements.