A business bank account is not a nice-to-have — it's a structural part of your business. Running business money through a personal account undermines your liability shield, wrecks your bookkeeping, and makes tax time dramatically worse. Here's why, and how to open one without friction.
Why a separate account matters
Three reasons, each independently important:
- Liability protection — co-mingling personal and business funds is exactly what courts point to when they "pierce the veil" and hold you personally liable. The liability shield you formed the LLC for is built on separation.
- Clean books — a dedicated account means every business expense is already tagged. Bookkeeping, tax prep, and audits all get dramatically easier.
- Professional credibility — you'll need a business account to accept payments, pay contractors, and appear as a real business to vendors and customers.
When to open it
As soon as the entity exists — right after formation, before you earn your first dollar. Business income that lands in a personal account is already co-mingled, and undoing it is tedious.
What you need to open one
Banks vary, but the standard checklist is:
- Your formation documents — Certificate of Formation / Articles of Organization.
- Your EIN — the federal tax ID (see our EIN guide).
- Your Operating Agreement or Bylaws — many banks require it, especially for multi-member or corporations.
- A resolution authorizing the account — corporations (and many LLCs) need a board/member resolution naming the signer.
- Your personal ID — the owner's driver's license/passport.
- A proof of address — often a utility bill or lease.
Which bank to pick
The right bank depends on your business:
- Your personal bank — easiest onboarding, but business products can be weaker.
- Online business banks — fast onboarding, good apps, built for freelancers and tech founders; some are excellent for remote work.
- Traditional banks with business desks — good if you'll need loans or a physical branch.
- Specialty banks — some cater to specific niches (e.g., tech founders).
Compare monthly fees, minimum balances, transaction limits, and how easy deposits/transfers are. A $0-fee online account beats a "prestige" account with a minimum balance you'll struggle to keep.
What to do after opening
- Route all business money through the business account — income and expenses.
- Get a business card — and use it only for business.
- Set up bookkeeping — even a spreadsheet from day one beats reconstructing it in April.
- Pay yourself deliberately — owners can take distributions or salary; either way, do it as a clear, recorded transaction, not an informal transfer.
The hidden cost of "I'll do it later"
Every month you run money through a personal account:
- Your liability shield is thinner.
- Your tax prep is more expensive (a CPA has to untangle the mess).
- Your records are harder to defend in an audit.
The account itself is free or near-free. The delay is what costs.
Common questions
Do I need an EIN to open a business account? Most banks require an EIN for LLCs and corporations. It's free from the IRS — get it at formation.
Can I open a business account before my entity is formed? Generally no — banks want proof the entity exists. Form first, then open.
Single-member LLC — do I really need a separate account? Yes. Even for a one-person LLC, separation is what keeps the liability shield and the clean books intact.
Can I use my personal account and "just track it in a spreadsheet"? You can, and it's exactly how founders lose liability arguments and pay more in tax prep. Don't.
Make it painless
We include a free warm introduction to our partner banks (Comerica in Texas, Chase, and Mercury for tech founders) with every formation — so the paperwork friction and the "which bank" decision are handled for you.