Karnataka Professional Tax - Penalties & Interest Details..?

Hi Everyone....

I wanted to know what are the penalties and interest charges for Professional Tax which we not paid but deducted from employees. How to calculate on the same. We are a new Private Limited Company and we missed to pay but we would like clear all outstanding and pay going forward on monthly basis..?? Just to let you know we have just registered  under KARNATAKA PT and got our user id and password.

Any advice and guidance highly appreciated...