Mandatory e-payment of service tax enables online remittance with instant electronic receipts and extended payment hours. Mandatory e-payment of service tax establishes an additional compulsory electronic payment channel via banks' Internet banking to supplement conventional payment methods, enabling remote anytime remittance. The system mandates single-challan online filing with minimal fields, selection of tax type from a drop-down menu, extended payment hours, instant electronic receipts with bank transaction numbers, and delivery of a receipted challan copy, administered under the central payment and accounting organisation.