"Taxpayer Identification Number (TIN)"

United States

TIN is a unique nine-digit number for identifying an individual, business or other entity in tax returns and additional documents filed with the IRS. 

What is Taxpayer Identification Number ?

TIN is identification number used by IRS in the administration of tax laws. Each person or entity must apply for TIN. Then, assigning agency assigns the applicant a special number. 

How Tax Identification Number Works ?

Individuals are assigned TINs in the form of Social Security numbers (SSN). Other types of tax identification numbers include the EIN, ITIN, ATIN, and PTIN. 

Types of Tax Identification Numbers


The Internal Revenue Service issues all Taxpayer Identification Number except for social security numbers, which are issued by the Social Security Administration.

Who issues Taxpayer Identification Number ?

Tax filers must include their tax identification number on tax-related documents and when claiming benefits. TINs are also required when applying for credit and employment.

Uses of Taxpayer Identification Number

The agency that issues your TIN provides you with an official document with your unique identifier. If you can't remember or lose your documents, you should contact the issuing agency to get your TIN again.

How to Get an Taxpayer Identification Number ?

click here to get tin

You may be able to obtain TIN directly from the Internal Revenue Service. Individuals or entities should file some forms with the IRS.