As a F-1 visa holder, you are considered as an 'exempt' individual, meaning not counting days when you reside in the United States for five years. You should be filing a form 1040NR. For the TurboTax program, it does not support nonresident 1040NR and assumes every filer is a resident so there are no questions related to your immigration status being asked in the program. Since you have already filed the 2019 tax return, you are suggested to use our affiliated partner, Sprintax to complete your nonresident form and also amend the original return.
You would need to submit both the Form 1040-X and Form 1040NR together:
- Download the Form 1040-X from the IRS website (see below). On the front page of Form 1040-X, enter your name, current address, and social security number (SSN) or IRS individual taxpayer identification number (ITIN)
- Do not enter any other information on page 1.
- Do not complete Parts I or II on page 2 of Form 1040X.
- Enter in Part III the reason why you are filing Form 1040X.
- Complete a new or corrected Form 1040-NR. As TurboTax does not support nonresident forms, click here Sprintax.
- Across the top of Form 1040-NR, write “Amended”
- Attach the new or corrected return (Form 1040NR) to the back of Form 1040-X.
https://www.irs.gov/pub/irs-pdf/f1040x.pdf
https://www.irs.gov/pub/irs-pdf/i1040x.pdf, page 7 under Residents and Nonresidents
