Interest on disputed Modvat reversal cannot be enforced before the principal excise liability attains finality.

Interest on reversed Modvat credit could not be sustained while the underlying excise liability remained unsettled, because such interest arises only after the principal dispute has attained finality against the assessee. Where the adjudication order had been set aside or the matter remanded for fresh decision, the interest demand was premature and could not be maintained for the disputed serial numbers. The uncontested amounts were not treated in the same manner as the disputed demands, and the interest issue for those items required fresh consideration by the adjudicating authority.

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Issues: Whether interest demanded on Modvat credit reversal could be sustained where the underlying adjudication order had been set aside or the matter had been remanded, and whether the demand was premature in respect of the disputed serial numbers.

Analysis: Interest under the cited excise provisions was held to arise only when the dispute concerning the principal liability had finally attained finality against the assessee. Where the foundational order had ceased to exist because it was set aside or the matter was remanded for fresh decision, the demand of interest could not be maintained at that stage. However, the amounts not disputed by the assessee were not in issue for adjudication on merits in the same manner as the remaining contested demands.

Conclusion: The demand of interest was unsustainable for the disputed items and required fresh consideration by the adjudicating authority. The appeal was allowed to that extent by remand.

Ratio Decidendi: Interest linked to a disputed excise demand cannot be enforced before the underlying liability has attained final finality against the assessee.

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