After you file

Taxes already filled as single status... due to ITIN was not available at time of filing

Now filing amendment Of previous year with status as married adding spouse and apply for her ITIN 

2019 and 2020 taxes need to amend.

You mean we can file amend but No other tax credit claim for ITIN holder?

 

But atleast we should able to get standard deduction for married status

 

Thanks for clarification