Nil-rate exemption for initial clearances of specified excisable goods subject to conditions, exclusions and input credit restrictions. Exempts first clearances for home consumption of enumerated excisable goods up to a prescribed aggregate limit each financial year by permitting such clearances at nil rate, subject to conditions: aggregate computation across factories and manufacturers, exclusions from the aggregate (e.g. fully exempt clearances, branded goods ineligible under paragraph 4, in factory input transfers), prohibition on using specified input and capital goods duty credits for qualifying clearances, an irrevocable option to pay normal duty for the year, procedural notice requirements, and transitional provisions for certain goods.