What is an Individual Taxpayer Identification Number (ITIN)?

An Individual Taxpayer Identification Number (ITIN) is a tax processing number issued by the Internal Revenue Service. It is a nine-digit number that always begins with the number 9 and has a 5, 6, 7, 8, or 9 in the fourth digit, example 9XX-7X-XXXX.

The IRS issues ITINs to individuals who are required to have a U.S. taxpayer identification number, but who do not have, and are not eligible to obtain, a Social Security Number (SSN) from the Social Security Administration (SSA).

ITINs are issued regardless of immigration status because both resident and nonresident aliens may have U.S. tax return and payment responsibilities under the Internal Revenue Code.

Free federal for everyone

Start 2025 return