how to apply tax id number
Getting an Individual Tax Identification Number (ITIN) 1  1. Determine if you are eligible for an ITIN. 2  2. Complete Form W-7. 3  3. Get help with your application if necessary.  4. Mail in the application.
Community Q&A. I don't have a social security number or a federal tax ID; I came here on a visa. If you have a green card, you may be eligible to apply for a social security number. Otherwise, you will need to file a W-7 form to apply for an ITIN. This form can be filed with your federal tax return (form 1040).