Mutually exclusive excise duty schemes bar an assessee from combining composition payment with actual production assessment.

A manufacturer who voluntarily opts for payment under Rule 96ZO(3) of the Central Excise Rules is bound by that composition-based scheme and cannot invoke Section 3A(4) of the Central Excise Act, 1944 to seek duty determination on actual production for the same period. Section 3A creates a capacity-based levy regime, while Rule 96ZO(3) operates as an alternative method of payment at the assessee's option. The two mechanisms are mutually exclusive, and the assessee cannot combine the benefit of lump-sum payment with re-determination under the regular assessment procedure.

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Issues: Whether a manufacturer who has opted to pay duty under Rule 96ZO(3) of the Central Excise Rules can still claim determination of duty on the basis of actual production under Section 3A(4) of the Central Excise Act, 1944.

Analysis: Section 3A of the Act creates a special regime for levy and collection of duty on the basis of production capacity. Rule 96ZO(3) provides an alternative composition-based method of payment, available at the assessee's option, and expressly excludes the procedure under Section 3A(4). The two mechanisms are alternative schemes and cannot be combined to create a hybrid method under which the assessee enjoys the advantage of lump sum payment while also seeking re-determination on actual production. A composition scheme, once voluntarily chosen, carries its own advantages and disadvantages and does not permit reversion to the regular capacity-determination route for the same period.

Conclusion: A manufacturer who has opted for payment under Rule 96ZO(3) cannot invoke Section 3A(4) to claim determination of duty on actual production.

Ratio Decidendi: Where the statute provides mutually exclusive methods of duty computation, an assessee who voluntarily elects a composition scheme is bound by that election and cannot claim the benefit of the excluded regular assessment procedure for the same period.

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