You'll need to amend your 2019 tax return. Since TurboTax does not support Form 1040NR and you filed Form 1040, it won't be possible to amend your 2019 tax return through TurboTax. Unfortunately we must advise you to seek professional advice for this particular situation.
Keep in mind: You have 3 years from the date you filed your 2019 return (or 2 years after you paid the tax due, whichever is later) to file an amended return and claim any refund due to you outside of the stimulus payment that you received.
Regarding the stimulus payment, it will have to be returned to the IRS.
How should an individual return an Economic Impact Payment?
Mail the payment to the IRS address – based on the state the person lives in – as indicated in the FAQs about repayments.
When returning a paper check that was not cashed or deposited taxpayers should:
- Write Void in the endorsement section on the back of the check.
- Mail the voided Treasury check immediately to the appropriate IRS location.
- Don't staple, bend or paper clip the check.
- Include a brief explanation of why they return the check.
When returning a direct deposit or a paper check that was cashed or deposited taxpayers should:
- Mail a personal check, money order, etc., to the appropriate IRS location.
- Make the check or money order payable to U.S. Treasury and write 2020 EIP, and the taxpayer identification number, Social Security number or individual taxpayer identification number of the person whose name is on the check.
- Include a brief explanation of why they are returning the Economic Impact Payment.
For more details about how to return the stimulus payment, visit this link to the IRS website.
