Optional exemption notification preserves Section 4 valuation and deductions for excisable medicines, not mandatory exemption.

Section 4 of the Central Excise Act, 1944 remained available for valuation of medicines covered by an exemption notification because the notification operated in a separate field and did not override the statutory assessment scheme. The notification fixed its own price-based limit and, through its conditions, showed that exemption was optional rather than compulsory, subject to consistent claim across the relevant price list. In the absence of any disqualifying factor, the assessee could elect assessment under Section 4 and claim the deductions permitted under that provision; the exemption notification was not mandatory.

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Issues: Whether, for medicines covered by the exemption notification, the assessee could claim assessment under Section 4 of the Central Excise Act, 1944 and the deductions permissible thereunder, or whether the assessee was bound to avail the exemption notification and be confined to the value mechanism specified in it.

Analysis: Section 4 of the Central Excise Act, 1944 governs assessment on the assessable value of goods and lays down the general basis for arriving at such value. The exemption notification operated in a distinct field and fixed its own limit by reference to retail price less a 15% discount. That notification did not displace the scheme of Section 4. The provisos to the notification showed that exemption was available only subject to stated conditions, including that the manufacturer claimed exemption consistently in respect of all medicines covered by the relevant price list. This indicated that availing the exemption was not compulsory in every case. In the absence of any other disqualifying factor, the assessee could opt for assessment under Section 4 and claim the deductions permissible under that provision.

Conclusion: The assessee was entitled to have duty assessed under Section 4 of the Central Excise Act, 1944 and to claim the deductions available thereunder; the exemption notification was not mandatory.

Ratio Decidendi: Where an exemption notification operates independently of the statutory valuation scheme and its terms do not make availing the exemption compulsory, the assessee may elect assessment under the general charging and valuation provision and claim the deductions permitted by that provision.

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