Are you a paid tax preparer? If so you cannot use TurboTax. And....without some details about his immigration status, he might not be able to file using TurboTax. Please see this:
https://www.sprintax.com/non-resident-alien-tax-1040nr-turbotax.html
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
