GST late filling and late payment fee

VIJITH TK (Accountant) (70 Points)

20 September 2018  
Dear Experts

Hope all is well

How to calculate GST late payment fee ? For example July 2018 month GST payment we haven't make so now I need to calculate interest from 1st July onwards ? or 20th or 21st onwards ? what is the rate for GST interest ?

How to calculate GST late filling fee? from which date onwards I need to calculate ? what is the interest rate? what is the maximum amount of interest amount ?

Thanks in advance

Thanks
Vijith T K