If you do not have an SSN and are not eligible to get
one, you can get an individual taxpayer identification
number (ITIN). To apply for an ITIN, file Form W-7 with the
IRS. It usually takes 4-6 weeks to get an ITIN. To claim
certain treaty benefits, you must complete line 5 by
submitting an SSN or ITIN, or line 6 by providing a foreign
tax identification number (foreign TIN).