Here is how :
First of all, you cannot e-file your return. However, you can still use the TurboTax program to prepare your tax return and required forms. After completion, print them out.
Secondly, complete a Form W-7 and gather all the required documents. See https://www.irs.gov/Individuals/General-ITIN-Information.
Then, attach the printed return and required forms to the form W-7 along with the required documents and submit everything to the IRS Austin location in Texas by mail. ( see above link)
