Unjust enrichment in excise refunds is rebuttable; final refund orders cannot be reopened by belated recovery notices.

Refund of duty on returned goods under Rule 173-L was found admissible because unjust enrichment was not proved: the assessee produced declarations, transport records, debit and credit notes, and rejection letters showing no sale and no passing on of duty. The presumption under Section 12B is rebuttable, and the fact-finding authorities accepted evidence rebutting it. The department also could not reopen a concluded refund by issuing a fresh notice years later in collateral proceedings, since the earlier appellate determination had become final and the recovery action was held time-barred. The assessee's refund entitlement was sustained.

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Issues: (i) whether the refund claim for returned goods under Rule 173-L of the Central Excise Rules, 1944 could be denied on the ground of unjust enrichment and the presumption under Section 12B of the Central Excise Act, 1944; (ii) whether the department could reopen or cancel the earlier refund by a fresh notice after the period prescribed under Section 11A of the Central Excise Act, 1944 and in disregard of the earlier final order.

Issue (i): whether the refund claim for returned goods under Rule 173-L of the Central Excise Rules, 1944 could be denied on the ground of unjust enrichment and the presumption under Section 12B of the Central Excise Act, 1944.

Analysis: The refund claims related to goods returned by the consignees for non-conformity with specifications. The assessee produced D-3 declarations, gate passes, transport documents, debit notes, credit notes and rejection letters to show that there was no sale and that the duty burden had not been passed on. The authorities below recorded findings of fact in favour of the assessee on these materials. The presumption under Section 12B is rebuttable, and on the evidence accepted by the fact-finding authorities, unjust enrichment was not established.

Conclusion: The plea of unjust enrichment failed, and the refund was held admissible in favour of the assessee.

Issue (ii): whether the department could reopen or cancel the earlier refund by a fresh notice after the period prescribed under Section 11A of the Central Excise Act, 1944 and in disregard of the earlier final order.

Analysis: The earlier appellate order had already determined that the assessee satisfied Rule 173-L and had left only the quantification exercise to the original authority. The later show-cause notice seeking cancellation of the refund was issued nearly four years after the refund, well beyond the limitation period applied by the Court. The department could not circumvent the binding earlier order in collateral proceedings, and the recovery action was held time-barred.

Conclusion: The fresh proceedings to cancel the refund were barred by limitation and were not maintainable against the assessee.

Final Conclusion: The appeal was rejected, the assessee's entitlement to refund was sustained, and the revenue authorities were held bound by the earlier final adjudication.

Ratio Decidendi: In refund matters under Rule 173-L, unjust enrichment must be proved on the facts and the statutory presumption is rebuttable by reliable evidence; a concluded appellate determination cannot be reopened by a belated recovery notice beyond limitation in collateral proceedings.

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