Value-addition special rate option lets manufacturers seek an excise refund rate matching actual value addition, with auditor proof and timelines. Amendment revises the concessional excise Table to link rates to specified inputs used in the same factory and permits manufacturers to apply for a special rate reflecting actual value addition if qualifying thresholds are met, subject to auditor certification and prescribed filing timelines; certain product categories are excluded. It provides retrospective refund effectiveness from the financial year start or from commencement of production for new units, shortens adjudication timelines, and mandates refund of any differential between refunds and duty paid (excluding CENVAT utilisation) by the designated officer within the subsequent year.