A Business Bank Account for a Small LLC: The Cheapest Protective Step

Updated August 7, 2026. Quick answer: the separate business account is not paperwork — it is the thing that makes the LLC mean anything. An LLC protects your personal assets because the business is a separate legal person; if you run its money through your personal account, you have supplied the evidence that it is not separate. The account is usually free or nearly free, it takes an afternoon, and it is the cheapest protective step in the whole setup. You will need the EIN first.

What commingling actually costs you

The liability shield is not a certificate; it is a conclusion a court reaches about how you behaved. When someone sues and argues that the entity should be disregarded — the argument usually described as piercing the veil — the facts they point at are ordinary and domestic: business income paid into a personal account, personal expenses paid from the business account, no separate books, an entity that exists on paper and nowhere else.

The asymmetry is what makes this worth doing. Keeping the account separate costs you an afternoon and, in most cases, no monthly fee. Not keeping it separate costs you nothing at all until the one day it costs you everything the LLC was formed to protect. Veil-piercing standards are set by state law and by the courts of each state, so nobody can promise you a rule that holds everywhere — which is exactly why the conservative habit is the cheap one.

What the bank will actually ask for

• The EIN, and usually the IRS confirmation letter. Get it directly from the IRS — it is free.
• Your formation documents — the filed articles or certificate of formation from the state.
• Identification for whoever will sign, and for larger banks, an ownership declaration naming the people behind the entity.
• An operating agreement, at some banks, even for a single-member LLC that is not required by the state to have one.

Fees vary enormously and change constantly, so treat any published figure with suspicion, including ours — we are not quoting one. What is worth comparing is the shape of the account rather than the headline: whether the monthly fee waives on a balance you will actually hold, whether cash deposits are limited, and whether transfers to your personal account are free.

Paying yourself out of it

For a single-member LLC taxed as a sole proprietorship, money you take is a draw rather than a wage, and moving it from the business account to your personal account is a normal transaction that does not damage the separation — because it is recorded as what it is. The damage comes from the reverse habit: paying a personal bill straight out of the business account because the card was nearer. If it happens, record it as a draw rather than pretending it did not.

The order that avoids the mess

1. Decide whether you need the entity at all. Plenty of small businesses do not.
2. Form it in the state where you live and operate.
3. Get the EIN from the IRS, free.
4. Open the account and move every business dollar through it from day one.
5. Keep records the IRS would accept — which is a lower bar than you think.

Sources and limits

Bank documentation requirements are described here in general terms from what banks commonly ask; they vary by institution and we are not naming or recommending any. Veil-piercing is state law and fact-specific — nothing here is a legal standard, and a page cannot tell you how a court in your state would rule. The point that survives every jurisdiction is narrower and more useful: separate money is easier to defend than mixed money.