How to Locate an Employer's Federal Tax ID Number

Find an employer's federal tax ID number.

An Employer Federal Tax ID Number can also be called an Employer Identification Number (EIN), Federal Employer Identification Number (FEIN) or a Taxpayer Identification Number (TIN). Employer Federal Tax ID Numbers are nine-digits long and issued by the Internal Revenue Service to all companies required to pay federal income taxes. Every company has its own Employer Federal Tax ID Number and employees use the number when they file their taxes each year. There are several ways to find an employer's federal tax ID number.

Step 1

Contact the employer's human resources department and request the Federal Tax ID Number. If you are or were an employee for the company, you should be given the number. The employer's federal tax ID number will also be on any W-2 forms you might have received from the employer.

Step 2

Use the Security and Exchange Commissions EDGAR database website to find a public company's federal tax ID number. (See Resources.) All public companies have to file their financial information with the SEC, and you can use the EDGAR database website to find a public employer's federal tax ID number.

Step 3

Use GuideStar to find the Employer Federal Tax ID Number for a nonprofit organization. (See Resources.) Nonprofit organizations provide their tax ID number on Form 990 and Guidestar will allow you to search for any nonprofit's Form 990.

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