The EmployerIdentificationNumber (EIN), also known as the Federal EmployerIdentificationNumber (FEIN) or the Federal Tax IdentificationNumber (FTIN), is a unique nine-digit number assigned by the Internal Revenue Service (IRS)... Learn how EINs work, how to apply, and how to perform a nonprofit tax ID number lookup to verify an organization’s status. 6 min read updated on September 11, 2025.

Understanding the Context

To apply for an employeridentificationnumber, you should obtain Form SS-4 PDF and its instructions PDF. You can apply for an EIN online, by mail, or by fax. You may also apply by telephone if your organization was formed outside the U.S. If your nonprofit is an employer, the EIN identifies its tax account.

Key Insights

Even non-employers that file tax returns need a number to establish them as separate entities in the IRS files. These include nonprofits, trusts, estates of decedents and government agencies. An employeridentificationnumber (EIN) is a nine-digit number that lets government agencies identify businesses and track their tax obligations. Why the EIN Is the Number That Matters. Every nonprofit needs an EIN before it can open a bank account, hire employees, or file any federal tax return.

Final Thoughts

After starting your business, obtain your EIN (also known as a Federal Tax ID). The EIN is required for LLCs and corporations to pay taxes. How to Get an EINNumberfor a Non-Profit Organization.