Mandatory e-payment of service tax requires taxpayers to submit online challan and authorize bank debit for compliance. Effective from 1-10-2006, mandatory e-payment requires taxpayers to make service tax payments via banks' internet portals by logging on with bank credentials, completing a largely pre-populated online challan, selecting tax types, entering amounts, reviewing totals, submitting the challan and authorising debit from a nominated account in the bank's secured e-banking area.