Unjust enrichment defeats excise refund where duty was passed on, even though properzi rods were outside the tariff entry.

Limitation under refund rules did not bar writ relief where duty was allegedly collected without authority of law, and recovery of money paid under mistake remained available within the legally recognised period from discovery. Properzi rods were held not to fall within Item 27 as it then stood before insertion of sub-item (aa), but the intermediate molten aluminium in crude form was treated as dutiable under Item 27(a) during the continuous manufacturing process. Even so, refund was denied because the duty burden had been passed on to consumers; granting refund to the claimants would amount to unjust enrichment and was not warranted in writ jurisdiction.

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Issues: (i) Whether the refund claim was barred by limitation under Rule 11 and Rule 173-J of the Central Excise Rules; (ii) whether aluminium properzi rods were liable to excise duty for the period before insertion of sub-item (aa) in Item 27 of the Central Excise Tariff; (iii) if duty was payable, whether the intermediate production of molten aluminium in crude form attracted duty under Item 27(a) and whether refund could be ordered in favour of the petitioners.

Issue (i): Whether the refund claim was barred by limitation under Rule 11 and Rule 173-J of the Central Excise Rules.

Analysis: The claim was asserted to be based on levy and collection without authority of law and on a mutual mistake. The Court held that the statutory time limits in the refund rules govern departmental refund procedure, but they do not bar the Court's power under Article 226 to grant relief where duty has been collected without authority of law. Money paid under mistake may be recovered within the period recognised in law from the date of discovery of the mistake, and the writ petitions were filed within a reasonable time after exhaustion of departmental remedies.

Conclusion: The refund claim was not rejected merely on the ground of limitation under Rule 11 and Rule 173-J.

Issue (ii): Whether aluminium properzi rods were liable to excise duty for the period before insertion of sub-item (aa) in Item 27 of the Central Excise Tariff.

Analysis: Before 1-3-1969, Item 27(a) covered aluminium in crude form, while sub-item (aa) bringing wire rods and related goods into the tariff was introduced only later. The Court accepted that properzi rods as such did not fall within the tariff entry then in force, but examined whether duty could nevertheless attach to the crude aluminium produced in the course of manufacture. The manufacturing process was treated as a continuous one in which molten aluminium emerged as an intermediate stage before the final rod was formed.

Conclusion: Properzi rods as finished goods were not taxable under Item 27 as it then stood, but the intermediate molten aluminium in crude form was dutiable under Item 27(a).

Issue (iii): Whether, if duty was payable, refund could be ordered in favour of the petitioners.

Analysis: The duty had been passed on to consumers, so the petitioners had not borne the burden themselves. Since excise duty is an indirect tax ultimately intended to fall on the consumer, refund to the petitioners would result in unjust enrichment. The Court held that discretionary relief under Article 226 should not be used to allow the petitioners to retain money actually borne by consumers, and that any excess collection, if any, should not be refunded to the petitioners.

Conclusion: No refund was directed in favour of the petitioners.

Final Conclusion: The refund claims failed, and the writ petitions were dismissed, though the legal challenge on limitation did not succeed and the Court recognised that the tariff position of properzi rods required a distinction between the finished rods and the crude aluminium emerging in the manufacturing process.

Ratio Decidendi: A refund under writ jurisdiction will be denied where the tax burden has been passed on to consumers and refund to the claimant would amount to unjust enrichment, even if the levy is otherwise open to challenge.

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