Valid ITIN Number Range

The IRS issues an Individual Taxpayer Identification Number, ITIN, to certain resident and non-resident aliens, their spouses, and dependents for tax processing purposes. ITINs are issued to taxpayers that are not eligible to obtain a Social Security Number (SSN) from the Social Security Administration. Taxpayers with a valid ITIN follow the same format as the 9-digit SSN and will begin with the number "9". Valid ITIN middle digits, the 4th and 5th digits, range from 50-65, 70-88, 90-92, 94-99. Further information on ITINs and applying for an ITIN using Form W-7, click here.

Internal Revenue Service Number

The IRS issues an Internal Revenue Service Number (IRSN) that looks like an ITIN. The IRSN is the same 9-digit format that begins with "9", but it is an internal number the IRS uses. The taxpayer is assigned this number until an SSN or ITIN is assigned or found. An IRSN cannot be used to file a tax return. Click here for more information about IRSNs.

For comparison, here are the ranges of ITIN, IRSN, and ATIN middle digits:

Additional Information:

IRS: Individual Taxpayer Identification Number

IRS: Publication 1915