If you are getting a refund there is no penalty for filing late.
You will have to figure out why it was returned to you. If it was returned by USPS without ever reaching the IRS, then the problem has nothing to do with your tax return. Maybe you sent it to an incorrect address, or didn't put enough postage on it. If you are not enclosing a payment with your tax return, any Form 1040NR tax return for an individual has to be mailed to the following address.
Department of the Treasury
Internal Revenue Service
Austin, Texas 73301-0215
Please keep in mind that we cannot give you much help with a Form 1040NR tax return here in TurboTax AnswerXchange, since TurboTax does not support Form 1040NR. If you need more help you should contact Sprintax support.
