Excise classification and notice-based demand limits prevent duty liability on vegetable tallow outside Item 13.

Vegetable tallow made from non-essential oil could not be classified under Item 13 because that entry applied only to vegetable oil hardened and fit for human consumption; the second proviso to Notification No. 33/63 as amended therefore did not apply, and the duty demand failed. Estoppel could not bar the assessee from asserting the correct legal classification in excise matters, so the earlier treatment of the goods did not preclude challenge. A demand also could not be sustained on a fresh ground, such as Item 12, when that basis was not set out in the notice or impugned orders. The HC quashed the orders and granted relief.

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Issues: (i) Whether the vegetable tallow manufactured from non-essential oil could be classified under Item 13 so as to attract the second proviso to Notification No. 33/63 as amended by Notification No. 181/71. (ii) Whether the petitioners were precluded by estoppel from denying the earlier classification. (iii) Whether the duty demand could be sustained on a ground not forming the basis of the show cause notice and impugned orders.

Issue (i): Whether the vegetable tallow manufactured from non-essential oil could be classified under Item 13 so as to attract the second proviso to Notification No. 33/63 as amended by Notification No. 181/71.

Analysis: The exemption under Notification No. 33/63 covered vegetable non-essential oil used after processing in the manufacture of goods falling under Items 13, 14 and 15. The amended second proviso denied exemption only where such oil was used in the manufacture of finished excisable goods exempted from duty or chargeable to nil rate. The decisive factor was that the tallow was not fit for human consumption, and Item 13 applied only to vegetable oil hardened and fit for human consumption. Since the Department never disputed this factual position, the tallow could not be brought within Item 13, and the second proviso was inapplicable.

Conclusion: The classification under Item 13 failed, and the duty demand based on the second proviso could not be sustained; this issue was decided in favour of the assessee.

Issue (ii): Whether the petitioners were precluded by estoppel from denying the earlier classification.

Analysis: In taxation matters, estoppel cannot operate to prevent an assessee from asserting the correct legal position. The earlier treatment of the goods as falling under Item 13 did not bar the petitioners from contending, on the basis of the show cause reply and subsequent proceedings, that the tallow was not fit for human consumption and therefore outside Item 13.

Conclusion: The plea of estoppel was rejected, and the petitioners were not barred from disputing the classification; this issue was decided in favour of the assessee.

Issue (iii): Whether the duty demand could be sustained on a ground not forming the basis of the show cause notice and impugned orders.

Analysis: The Department attempted to support the demand by contending that the oil fell under Item 12 and that exemption was unavailable because the soap was manufactured elsewhere. That ground did not form the basis of the show cause notice or the orders under challenge, which proceeded on the footing that the goods were covered by Item 13 and the amended proviso. A liability cannot be upheld on a fresh basis introduced for the first time in litigation without prior notice and an opportunity to meet it.

Conclusion: The new ground was not available to sustain the demand, and this issue was decided in favour of the assessee.

Final Conclusion: The impugned orders were quashed and the petitioners were held entitled to relief, with liberty to the Department to proceed in accordance with law on any other permissible basis.

Ratio Decidendi: In excise matters, an exemption-denying classification must strictly fit the statutory entry, tax liability cannot be sustained on a ground not put in the notice or orders, and estoppel does not apply so as to prevent a taxpayer from asserting the correct legal classification.

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