Unjust enrichment barred refund where assessments were not provisional and duty incidence was found passed on to customers.

Adjustment of inadmissible Modvat credit could not be made without a show cause notice, and the refund claim for the period before receipt of the protest letter was not time-barred. However, the assessments were held not to be provisional, so the refund remained subject to unjust enrichment. Unchanged selling prices did not by themselves rebut passing on of duty, and the invoice and costing material indicated that the duty burden had been recovered from customers. Overall, the revenue succeeded and the refund was rejected on unjust enrichment, despite limited relief on notice and limitation.

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Issues: (i) Whether the refund attributable to inadmissible Modvat credit could be denied or adjusted without issuance of a show cause notice. (ii) Whether the refund claim for the period prior to receipt of the protest letter was barred by limitation. (iii) Whether the assessments were provisional so as to exclude the application of unjust enrichment, and whether the burden of duty was passed on to customers.

Issue (i): Whether the refund attributable to inadmissible Modvat credit could be denied or adjusted without issuance of a show cause notice.

Analysis: The amount represented credit already availed in the RG23A account. The Tribunal accepted that even if the credit was otherwise inadmissible because the final product was exempt, recovery by adjustment could not be made without first issuing a show cause notice under the statutory recovery procedure.

Conclusion: In favour of the assessee on this issue; the adjustment of the Modvat credit amount could not be sustained without notice.

Issue (ii): Whether the refund claim for the period prior to receipt of the protest letter was barred by limitation.

Analysis: The protest letter was received in the Range Office on 5-12-1986, and the Tribunal treated that date as the operative date for protest. On that basis, the earlier period could not be treated as time barred.

Conclusion: In favour of the assessee on this issue; the refund for the earlier period was not barred by limitation.

Issue (iii): Whether the assessments were provisional so as to exclude the application of unjust enrichment, and whether the burden of duty was passed on to customers.

Analysis: The Tribunal found that the assessments were never made provisional and that approval of the classification list did not make clearances provisional merely because the matter was later remanded. It further held that unchanged selling prices did not by itself disprove passing on of duty, since the incidence could be absorbed by reducing profits, and the invoice and costing material indicated that the duty burden had been recovered from customers.

Conclusion: Against the assessee on this issue; unjust enrichment applied and the refund was not maintainable.

Final Conclusion: The revenue appeal succeeded overall, and the refund was rejected on the ground of unjust enrichment, notwithstanding the limited relief accepted on the notice and limitation points.

Ratio Decidendi: Where assessments are not provisional, a refund claim is subject to unjust enrichment, and unchanged prices do not by themselves disprove passing on of duty if the burden is absorbed through reduced profits or reflected in the invoice and costing structure.

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