SSN/ITIN

A Social Security Number (SSN) is a permanently assigned nine-digit number issued by the Social Security Administration to identify an individual income tax account.

An Individual Taxpayer Identification Number (ITIN) is a tax processing number. 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, an SSN.