Gstr 3 b late fees

Himanshu (student) (50 Points)

25 October 2020  
Hello, I have a doubt related late fees for gstr 3b. Today I want to file gstr3 b for April 2020.. From which due date I should calculate late fees
1. From extended due date 9.07.2020
Or
2. From regular due date 24. 05.2020
Plz guide.