18 May 2021
An amount equal to 35% of the tax paid in cash in the preceding quarter where the return was furnished quarterly; or equal to the tax paid in cash in the last month of the immediately preceding quarter where the return was furnished monthly.
As per Government Relaxations there is no extension of Due Date as such i.e. due date remains 25th of next month for Quarterly Filers under QRMP scheme but there is relaxations for Interest and late Fee