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EIN requirements · Updated Sep 19, 2026

EIN and Business Bank Accounts: When Banks Ask for a Federal Tax ID

An EIN is a federal tax identification number issued by the IRS. It is commonly used by banks to identify business customers, but whether a particular applicant must provide one depends on entity type and bank policy.

BBBy Business Banking Research DeskReviewed Sep 19, 2026Source basis Official / regulatory sourcesEditorial standards →
In this guide
  1. When an EIN is commonly needed
  2. Getting an EIN
  3. Confirming the number
  4. Sole proprietors
  5. Primary sources
Editorial note: Bank requirements, account features and operational controls vary by institution. Use this guide as a planning framework and confirm current requirements with the bank before acting.

When an EIN is commonly needed

The IRS lists corporations, partnerships, employers and certain tax filers among businesses that need an EIN. It also notes that many banks require an EIN when opening a business bank account.

Getting an EIN

Eligible applicants can obtain an EIN directly from the IRS for free. Avoid paying third parties merely to submit an application that can be completed with the IRS.

Confirming the number

Businesses may be able to use IRS notices or business tax-account records to confirm an EIN when a bank requests evidence. Keep the entity name consistent across tax and bank records.

Sole proprietors

Some sole proprietors may use an SSN for tax purposes, but a bank can still have its own account-opening requirements. Check the institution’s rules before applying.

Primary sources and reference material

BusinessBanks.us practical takeaway

Use the IRS as the source of truth for the EIN.

Good business banking decisions come from matching account structure, controls, insurance, service and payment workflows to how the company actually operates.

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