Common-input Cenvat credit: incidental by-products from integrated manufacture did not trigger separate accounts or 8% payment.

Hydrochloric acid used wholly at the initial demineralisation stage in an integrated manufacturing process for gelatine could not be treated as a common input for exempt DCP and EDCP, because those products emerged only incidentally from further processing of mother liquor and not from any separate use of the input. On that footing, the separate accounts requirement and the 8% payment rule under the common-input credit provisions did not apply to these by-products. Credit on hydrochloric acid remained admissible, as the emergence of waste or by-products during manufacture did not by itself justify denial of credit or reversal under Rule 57CC or Rule 6.

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Issues: Whether hydrochloric acid used in the manufacture of gelatine could be treated as a common input for exempted DCP and EDCP so as to attract the requirement of separate accounts and payment of 8% of the sale price under the Cenvat credit regime.

Analysis: The entire quantity of hydrochloric acid was used at the initial demineralisation stage for producing ossein and mother liquor, and the dutiable product gelatine emerged from further processing of ossein. DCP and EDCP arose only after neutralisation and further treatment of the mother liquor, without any fresh use of hydrochloric acid. On these facts, the process was an integrated and inseparable one, the exempt products were by-products arising incidentally from the principal manufacturing process, and no part of the input could be segregated as exclusively used for exempted goods. The scheme of Rule 57CC of the Central Excise Rules, 1944 and Rule 6 of the Cenvat Credit Rules, 2002 did not justify the 8% levy on such by-products, and the credit could not be denied merely because waste or by-products emerged during manufacture.

Conclusion: The requirement to pay 8% on DCP and EDCP was not attracted, and credit on hydrochloric acid remained admissible.

Final Conclusion: The appeal succeeded because the exempt products were incidental by-products of the manufacturing process and not exempted final products for the purpose of reversal or payment under the common-input credit rules.

Ratio Decidendi: Where a common input is used wholly in an integrated manufacturing process to produce a dutiable final product, and exempt goods emerge only incidentally as by-products without any separate use of the input, credit cannot be denied and the provision requiring payment on exempt final products does not apply.

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