Understanding where to locate your Employer Identification Number (EIN) is crucial for managing tax and business records efficiently. This unique identifier, assigned by the IRS, plays a role in various financial and legal processes for businesses. Knowing how to access it can save time and prevent compliance issues.
Documents Issued by the IRS
One of the most reliable sources for your EIN is the confirmation notice provided by the IRS after a successful application, known as the CP 575. 1Internal Revenue Service. 21.7.13 Assigning Employer Identification Numbers (EINs)
IRS correspondence related to audits or tax compliance also typically includes your EIN. Retaining these documents is essential for maintaining accurate records and ensuring your business remains in good standing with tax authorities.
Tax Returns and Filings
Tax returns and filings are another reliable way to find your EIN. It is prominently displayed on forms like Form 1120 for corporations and Form 1065 for partnerships, which are filed annually. Quarterly filings, such as Form 941 for payroll taxes and Form 940 for unemployment taxes, also include the EIN.
Keeping copies of these filings ensures your EIN is consistently accessible and helps maintain accurate records, especially during structural changes in your business. The IRS requires businesses to use their EIN on all federal tax returns. 2Internal Revenue Service. Instructions for Form 941 (03/2025)
Business Bank Account Records
Your EIN can often be found in business bank account records. Financial institutions require the EIN during the account setup process, and it is typically included in account opening documents and bank statements.
Review both electronic and paper statements, as many banks provide access to account details digitally. Vendor or client interactions may also require your EIN for invoicing or payment processing, offering additional opportunities to locate it.
Payroll or Vendor Forms
Payroll and vendor forms are useful resources for locating your EIN. Documents like W-2s for employees and 1099s for contractors display your EIN as part of required tax reporting. 3Internal Revenue Service. General Instructions for Forms W‑2 and W‑3 (2025)
Vendor forms, including purchase orders and agreements, also use the EIN for tax compliance and reporting. These documents are vital for smooth business transactions and can serve as a reliable reference for your EIN.
Contacting the IRS
If you cannot locate your EIN in your records, contacting the IRS directly is an option. The Business and Specialty Tax Line can assist in verifying or providing your EIN, provided you confirm your identity and business association. 4Internal Revenue Service. Telephone Assistance Contacts for Business Customers
The IRS may request details such as your business’s legal name and address on file to authenticate the request. They can also issue an EIN verification letter (Letter 147C) if needed, which serves as official confirmation of your EIN. 5Internal Revenue Service. 21.7.13 Assigning Employer Identification Numbers (EINs)