Quick Answer

To open a business bank account for an LLC, you will need your approved Articles of Organization from the state, your IRS EIN Confirmation Letter, and your LLC's Operating Agreement. You must never mix personal and business funds in the same account, as this breaks the legal separation that protects your personal assets.

Key Points for 2026

  • Required Documents: Articles of Organization, EIN, Operating Agreement, and your personal ID.
  • Commingling is Dangerous: Mixing funds is the #1 way LLC owners lose their liability protection in court.
  • Online vs Traditional: Online banks often offer zero fees and better software integrations, while traditional banks offer in-person cash deposits.
  • Beneficial Ownership: Since the 2024 CTA laws, banks enforce strict KYC (Know Your Customer) rules, requiring ID from all owners with 25%+ equity.

Documents Needed to Open an Account

Banks are heavily regulated and cannot open an account just because you claim to have a business. You must prove the business exists legally. Gather these four documents:

  1. Articles of Organization: The stamped/approved document from the Secretary of State proving your LLC is active.
  2. EIN Confirmation Letter (CP-575): The official IRS document showing your Employer Identification Number. Banks will not accept your Social Security Number for an LLC account.
  3. Operating Agreement: Even if your state doesn't require it, banks usually want to see this to verify who is authorized to open accounts and sign checks on behalf of the LLC.
  4. Personal Identification: A driver's license or passport for the member(s) opening the account.
Common Mistake

Many new business owners try to open a business account before getting their EIN from the IRS, which causes the application to be rejected. Always get your state approval first, then your EIN, and then go to the bank.

Example Scenario

The Situation: Sarah forms a graphic design LLC. She wants to start accepting client payments immediately, so she gives clients her personal checking account routing number.

The Mistake: Sarah is "commingling" funds. She is mixing her personal grocery money with her business revenue.

The Reality: If a client sues Sarah for a contract dispute, the judge will see that Sarah did not treat her LLC as a separate financial entity. The judge can "pierce the corporate veil," meaning Sarah's personal savings, car, and house are now at risk in the lawsuit. Had she opened a business bank account, her personal assets would be protected.

What to Do Next

If your LLC is approved and you have your EIN:

  1. Draft your Operating Agreement: You can use a standard template if you are a single-member LLC.
  2. Choose a Bank: Decide if you need to deposit physical cash (go with Chase, Bank of America, etc.) or if you are purely digital (consider Relay, Mercury, or Novo for zero fees).
  3. Apply Online or In-Branch: Submit your documents. Approval usually takes 1 to 3 business days.
  4. Fund the Account: Make an initial capital contribution from your personal account to the business account to officially fund the LLC.

Official Sources