IRS Tax Tip 2003-26, (Feb. 6, 2003) -- If you are not eligible to get a Social Security number but have to file a tax return, you will need to use
An ITIN is a 9-digit number issued by the IRS, beginning with the number "9." It may look a bit like a Social Security number, but an ITIN is used only for federal income tax purposes and has no effect on your work or immigration status in the U.S.
Each person who files a federal tax return or is listed as a spouse or dependent must have a valid SSN or ITIN. This will ensure prompt processing and receipt of any refund. If a person does not use a valid number, this will delay any refund due and exemptions for spouse or dependents will be denied until a valid number is presented.
You can apply for an ITIN by completing and submitting a Form W-7 with appropriate documents to the IRS.
For more information about ITINs, check out