As TurboTax does not support Form
1040NR, you cannot file with TurboTax. Instead, you are advised to visit our partner, Sprintax who offers filing solution to
our TurboTax customers. See Visit the TurboTax/Sprintax site.
As a J-1 visa holder, you are
considered as "exempt" meaning not counting days for two years
starting from the date of your first arrival in the United States. After
the two years period, you will start counting days by using the Substantial Presence Test to see if you qualify to be
treated as a US resident for tax purposes.
For examples, see :https://www.irs.gov/individuals/international-taxpayers/alien-residency-examples
For nonresident, you can claim single as your filing status ONLY IF you meet the requirements:
See https://www.irs.gov/pub/irs-pdf/i1040nr.pdf under Filing Status / Married persons who live apart
If you qualify, you can file Single on your Form 1040-NR.
