Central excise refund claims failed on limitation, unjust enrichment, and consequential interest once the refund was set aside.

Refund claims for October 1996 to December 1996 were time-barred under Section 11B because provisional assessment was not proved and the applications were filed beyond six months from duty payment. Refund claims for January 1997 to June 1997 were barred by unjust enrichment because the invoices did not separately disclose duty, the statutory presumption under Sections 12A and 12B operated, and the claimant produced no reliable evidence to show that the duty burden had not been passed on. The interest order could not survive once the refund itself was set aside, so it was also annulled.

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Issues: (i) Whether the refund claims relating to October 1996 to December 1996 were barred by limitation under Section 11B of the Central Excise Act, 1944 in the absence of provisional assessment; (ii) Whether the refund claims relating to January 1997 to June 1997 were hit by the doctrine of unjust enrichment; (iii) Whether interest granted on the refunded amount could survive once the refund itself was found unsustainable.

Issue (i): Whether the refund claims relating to October 1996 to December 1996 were barred by limitation under Section 11B of the Central Excise Act, 1944 in the absence of provisional assessment.

Analysis: The relevant refund applications were filed beyond six months from the dates of payment of duty. The plea that the assessments were provisional was not established, as there was no showing that provisional assessment had been sought or permitted under Rule 9B of the Central Excise Rules, 1944. In the absence of provisional assessment, the limitation prescribed under Section 11B applied to the claims.

Conclusion: The refund claims for October 1996 to December 1996 were correctly held time-barred and the assessee's challenge failed.

Issue (ii): Whether the refund claims relating to January 1997 to June 1997 were hit by the doctrine of unjust enrichment.

Analysis: The goods were cleared from depot to buyers, but the invoices did not separately disclose duty. The statutory presumption under Section 12B of the Central Excise Act, 1944 therefore operated against the claimant. The burden was on the assessee to prove that the incidence of duty had not been passed on, particularly in view of Section 12A of the Central Excise Act, 1944 requiring duty to be indicated in the relevant documents. No reliable evidence of credit notes or of reversal of duty burden was produced, and the presumption was not rebutted. The refund was thus barred by unjust enrichment.

Conclusion: The refund claims for January 1997 to June 1997 were barred by unjust enrichment and the Revenue's challenge succeeded.

Issue (iii): Whether interest granted on the refunded amount could survive once the refund itself was found unsustainable.

Analysis: The interest order was wholly dependent on the existence of a valid refund. Once the refund grant was set aside, the foundation for awarding interest disappeared.

Conclusion: The order granting interest could not stand and was set aside.

Final Conclusion: The assessee's appeal failed on limitation, the Revenue's challenge to the larger refund succeeded on unjust enrichment, and the consequential interest order was also set aside; the connected matters were finally disposed of accordingly.

Ratio Decidendi: For a refund claim under Section 11B of the Central Excise Act, 1944, the claimant must establish that the duty burden was not passed on to buyers, and where provisional assessment is not proved, the statutory limitation and the presumption of unjust enrichment continue to apply.

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