A Taxpayer Identification Number (TIN) is an identification number used by the Internal Revenue Service (IRS) in the administration of tax laws. It is issued either by the Social Security Administration (SSA) or by the IRS. A Social Security number (SSN) is issued by the SSA whereas all other TINs are issued by the IRS. Do I Need One?
What is a tax ID number?
A tax identification number, sometimes also called a "TIN number," is a unique nine-digit number that identifies you to the IRS. It's required on your tax return and requested in other official interactions. Tax ID numbers are assigned by either the IRS or the Social Security Administration
What is an individual identification number?
Individual Identification Number is a 10 digit number issued by the tax administration. The first 5 digits represent birthday as the number of days since 01/01/1900 (more numbers can be assigned to the same day, this additional or alternative numbers have greater first digit, typically 8).
