E-payment integration: Central Excise and Service Tax payments now require challan creation on CBIC portal and payment via ICEGATE. Payments of Central Excise and Service Tax arrears must be initiated by creating a challan on the CBIC GST portal using the CE/ST registration number, selecting account heads and amounts, then generating a Challan Temporary Identification Number (CTIN). The taxpayer clicks 'Make Payment' to be redirected to ICEGATE, selects unpaid challans, chooses NEFT/RTGS, obtains a printable mandate and completes payment online or at an authorized bank; online payments are confirmed on ICEGATE and routed back to CBIC GST.