Online store

it will be liable to pay vat to the sales tax autority of the state in which it is register or has obtained vat no. from 

SIR,

We are registered under chhattisgarh commercial tax, our october month vat on sales is Rs. 33,375/- and we are propritor ship concern, and our due date is 10.11.2014 but we could not pay on due date. Please tell us how to calculate Interst on vat on Rs.33375/-