I worked as a J1 in US through December to March. I did my return with TurboTax but I found as a non resident I wasn't supposed. Is there a way to give the money back?

[LinaJ2018 · Accepted solution]

You can discuss with our customer service department at TurboTax contact 

If you have filed a Form 1040 and need to amend by submitting a 1040NR, see the steps below.  You would need to submit both the Form 1040-X and form 1040NR together.  To amend, please wait until your return is fully processed and you have received your refund or your payment has cleared.

• Download 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 the 1040-NR, write “Amended”
• Attach the new or corrected return (Form 1040NR) to the back of Form 1040-X and submit to the IRS.

https://www.irs.gov/pub/irs-pdf/f1040x.pdf  - form

https://www.irs.gov/pub/irs-pdf/i1040x.pdf  - instructions

(See page 6 under Residents and Nonresidents)