Deductions & credits

@AmyC  Hi Amy, somehow I missed your message.

Thank you so much for your detailed information. As for the amend, I called to IRS, and the answer is we can amend 2019 tax return, and for 2020 natural disaster, the report deadline is Oct. 15th.  

Not sure if 3-year amend can be applied on the 2020 natural disaster report?

I appreciate  your help!