When should I apply?

You may apply for your ITIN at any time during the year if you are required to file a tax return or information return. At a minimum, you must complete Form W-7 when you are ready to file your federal income tax return by the due date of the return. If the tax return you attach to your Form W-7 is filed after the due date, you may owe interest and/or penalties.

How long does it take?

You will normally receive a letter from the IRS assigning you your tax identification number within seven weeks if you qualify for an ITIN and your application is complete.