Provisional assessment refund and unjust enrichment: pre-Rule 9B(5) claims were admissible, and vague recovery notices failed.

Refund arising from finalisation of provisional assessment for a period before the prospective operation of Rule 9B(5) of the Central Excise Rules, 1944 was not barred by unjust enrichment, because the statutory bar did not govern the earlier assessment period and the factual record supported that the duty burden was not passed on. A show-cause notice seeking recovery of the sanctioned refund was also held unsustainable because it was issued only under Section 11A(1), did not disclose a proper basis for the accusation, and did not invoke the statutory review mechanism required to challenge the refund order.

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Issues: (i) whether refund arising from finalisation of provisional assessment for the relevant period was governed by the doctrine of unjust enrichment and Rule 9B(5) of the Central Excise Rules, 1944; (ii) whether the show-cause notice issued to recover the sanctioned refund was valid in law and within jurisdiction.

Issue (i): whether refund arising from finalisation of provisional assessment for the relevant period was governed by the doctrine of unjust enrichment and Rule 9B(5) of the Central Excise Rules, 1944.

Analysis: The refund had arisen on finalisation of provisional assessment for the period 1998-99. The adjudicating authority had found on facts that the excess duty had been borne by the assessee and that credit notes, records and certificate evidence supported the refund claim. The Tribunal noted that the insertion of Rule 9B(5) took effect prospectively from 25.06.1999 and could not govern the earlier assessment period. On that basis, the statutory bar of unjust enrichment was held inapplicable to the refund claim in question.

Conclusion: The doctrine of unjust enrichment did not apply to the assessee's refund claim for the relevant provisional assessment period, and the refund was admissible.

Issue (ii): whether the show-cause notice issued to recover the sanctioned refund was valid in law and within jurisdiction.

Analysis: The notice was issued only under Section 11A(1) of the Central Excise Act, 1944, even though the Revenue sought to reopen an order already granting refund after recording findings on unjust enrichment. The Tribunal found that the notice did not disclose a proper gist of accusation and that no jurisdiction was shown under Section 35E(2) of the Central Excise Act, 1944 for challenging the subordinate order in the manner adopted. The notice was therefore treated as vague and legally unsustainable.

Conclusion: The show-cause notice was invalid and without jurisdiction.

Final Conclusion: The refund granted to the assessee was sustained, and the Revenue's challenge failed on both merits and jurisdiction.

Ratio Decidendi: A refund arising from finalisation of provisional assessment for a period prior to the prospective operation of Rule 9B(5) is not barred by unjust enrichment, and a recovery notice that is vague and not issued in accordance with the statutory review mechanism is unsustainable.

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