A federal Tax ID number, or Taxpayer Identification Number (TIN), is a nine digit number issued to individuals, businesses, organizations and government entities by the Internal Revenue Service or Social Security Administration. Basically, anyone who needs to pay taxes must have a TIN. A type of TIN is the Federal Employer Identification Number (FEIN), which is issued to government agencies such as the United States Postal Service, the Census Bureau and the Central Intelligence Agency. These numbers are public and easy to find on the Internet.
Navigate to the Health and Human Services website listed in References.
Download the document to your computer. This may occur automatically depending on your computer settings. Double click on the downloaded file to open it.
Locate the government agency in the file. The tax ID numbers (FEINs) will be listed in the column to the right of the entity name. For example, the FEIN for the Central Intelligence Agency is 53-0209083.