Central excise duties framework clarifies multiple duties, cesses and notification-based exemptions affecting levy and creditability. The framework identifies Basic Excise Duty (CENVAT) as the principal levy under the Tariff, with Special Excise Duty as an additional schedule-based charge often merged or exempted by notification. It outlines ancillary statutory levies including NCCD, additional duties for goods of special importance, textiles, mineral products and medical preparations, and an additional surcharge, and explains cesses such as Clean Energy Cess and education cess with their specific payment and credit rules.