Provisional assessment and interest demand: interest could not be quantified before final duty assessment was completed.

Interest under Section 11AA of the Central Excise Act could not be demanded or quantified before finalisation of a provisional assessment under Rule 9B, because the principal duty liability had not yet been conclusively determined. In a provisional assessment regime, the amount assessed is only adjusted against the duty finally assessed, so liability becomes final only on completion of the assessment process. On that basis, the interest demand linked to alleged short payment was held premature and unsustainable. The analysis also noted that proceedings under Section 11A could not be initiated before the assessment process was completed, and the issue was decided in favour of the assessee.

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Issues: Whether interest under Section 11AA of the Central Excise Act, 1944 could be demanded and quantified before finalization of assessment under Rule 9B of the Central Excise Rules, 1944.

Analysis: The assessment for the relevant period remained pending and the principal duty liability had not yet been finally determined. In a provisional assessment regime, the duty provisionally assessed is only adjusted against the duty finally assessed, and the assessee's liability becomes conclusive only upon completion of the final assessment. In such circumstances, a demand for interest linked to the alleged short payment of duty was held to be premature. The Court also relied on the principle that proceedings under Section 11A of the Central Excise Act, 1944 cannot be initiated without completing the assessment process.

Conclusion: The demand of interest before finalization of assessment was unsustainable and the issue was decided in favour of the assessee.

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