Standard deduction in salary

Section 115BAC was inserted in Income tax law in Finance bill 2020. This section 115BAC is applicable from FY 2020-21 (AY 2021-22). 

For FY 2019-20:

If you are filling ITR for FY. 2019-20 then this section is not applicable. But you can avail deduction Rs. 50000/- u/s 16(ia).

For FY 2020-21: 

If you file ITR with old tax regime then you can avail standard deduction Rs. 50000/- u/s 16(ia).

But if you file ITR in new tax regime then you can not avail standard deduction Rs.50000/- u/s 16(ia).