As of today March 28, 2024, Could you amend 2019 tax return?

The IRS limits the amount of time you have to file an amended return to claim a refund to:

• Within three years from the original filing deadline, or
• Within two years of paying the tax due for that year, if that date is later.

If you're outside of that window, you typically can't claim a refund by amending your return.

For more information, check: TurboTax Help article 

you have until may 18 to request additional refund on 2020 tax return,

For tax years before that, forget it

@keikoigari 

Thank you very  much for the prompt response.  I appreciate it!

Thank you very  much for the prompt response.  I appreciate it!