Modvat credit lapses when the final product becomes exempt; invalid credit taken or used must be reversed and recovered.

Modvat credit was held admissible only while the inputs were used in relation to a dutiable final product. Once the final product became fully exempt or chargeable to nil rate of duty, Rule 57C operated as an automatic bar, regardless of whether the exemption existed when the inputs were received or arose later. Credit taken in breach of that embargo became invalid, and any credit already utilised was recoverable under Rule 57I. The scheme under Rules 57A to 57J was therefore treated as unavailable after the product lost dutiability, and reversal of the credit was upheld.

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Issues: Whether Modvat credit validly taken on inputs received before the final product became exempt could be retained or utilised after exemption, or whether such credit became liable to reversal and recovery.

Analysis: The scheme of Rules 57A to 57J of the Central Excise Rules, 1944 was held to permit credit only where the inputs are used in relation to a dutiable final product. Rule 57C was treated as imposing an automatic bar once the final product became fully exempt or chargeable to nil rate of duty, without distinguishing between exemption existing at the time of receipt of inputs and exemption arising later. The credit, if taken contrary to that statutory embargo, was held to become invalid, and any credit already utilised was held recoverable under Rule 57I. Rule 57F(1) and related provisions were relied upon to hold that the inputs must be used in the manufacture of a dutiable final product and that the Modvat scheme cannot operate once the final product loses dutiability.

Conclusion: The credit was held not to be retainable after the final product became exempt, and the demand for reversal and recovery was upheld.

Final Conclusion: The appeal failed because Modvat credit cannot survive where the final product becomes fully exempt, and any credit taken or utilised in such circumstances is liable to recovery.

Ratio Decidendi: Modvat credit is admissible only so long as the inputs are used in relation to a dutiable final product, and once the final product becomes exempt or nil-rated, any credit contrary to the statutory bar becomes invalid and recoverable.

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