CA-JOB
226 Points
Joined July 2021
The calculation of Two years from the due date for furnishing of return under section 39 for the period in which such claim for refund arises.
For April 2019 you should have filed/claimed it before the due date of filling 3B for April 2021,
For the second question, you can claim as a whole for one or more financial years but for that, you can do it from Aug2019 to Till date provided you are filling RFD 01 on or before the Due date of 3B for August which is 11th/13th of Septmeber or else you can file from sep2019 to till date.