2 Points
Joined February 2017
Your calculater of late payment interest on TDS is workingly wrong please check it with as per Compliance aspect as per law.
Eg date of deduction of TDS 31/12/2015
Date of payment of TDS 15/01/2016
Delay month would be 2 month as per law
check in yopur calc it was shown only 1 month.
in your calc if i m entering the date between 15 to 30 it will not be considered.