Deductions & credits

@DaveF1006  Thanks for the help. Do you work with TurboTax ? 

Replying here point by point.
1. Agree. 

2. OK. 

3. Understood. I will go through steps to add required details in TT. I am yet to explore website. 

While calculating US tax credit in India, calculation was done as below - 
i. Calculate effective tax rate in India based on Gross Indian Income and gross taxes paid. It was something 26% for the year.

ii. Calculate new tax by clubbing US income.  Subtract US taxes paid from next taxes payable. 

iii. I had to pay extra taxes, as my US tax rate is lower. 
Do I need to follow similar process here ?  If yes, I need to consider gross income for Indian tax year and taxes paid. Correct  ?  And divide it by 12 may be to come up for Jan 2022 income and taxes paid ? 

Or all this will be take care by TT ? 

4. ok, I will finalize on an exchange rate.