ITIN – The Facts about the Individual Tax Identification Number

The Individual Tax Identification Number (ITIN) is a tax processing number issued by the Internal Revenue Service (IRS) to ensure that people – including unauthorized immigrants – pay taxes even if they do not have a Social Security number and regardless of their immigration status.
ITINs allow the IRS to bring in billions of dollars the federal government otherwise would have no way of collecting. This fact sheet explains what ITINs are, who has them, and the purposes for which they are used. Key Words: