CENVAT credit adjustment: retrospective payment obligation with interest for inputs used in exempted or nil-rated goods. The Bill amends the Central Excise Act and related CENVAT rules to clarify that voluntary payment of short-paid duty and interest will not attract penalty, to expand administrative rulemaking powers to restrict CENVAT utilisation and suspend registrations, and to allow the Settlement Commission limited extensions and defined settlement scope. Multiple retrospective rule amendments require manufacturers to remit amounts equal to CENVAT/credit attributable to inputs used in or in relation to exempted or nil-rated final products for disputes pending on enactment, together with interest; wording changes broaden applicability and certain illustrations are omitted.