Thank you @LinaJ2018 for the information! It helps a lot!
Have some more questions below:
1. If I have already received the tax return $123 based on the mistaken 1040 form. Now, I amend with 1040-NR-EZ, and need to return $123 to IRS. In my 1040-X, how should I fill in the page 1 "Refund or Amount You Owe" Line 18-23? Still leave them blank as you said above?
2. I would like to pay the tax return $123 by credit card. Can I pay immediately or need to wait after the IRS accepts my amendment documents?
Thank you!
