Refund of unutilised investigation deposits is not barred by limitation and is not hit by unjust enrichment.

Unspent amounts deposited during investigation, where proceedings were later dropped and the sums were never appropriated as duty, were treated as refundable deposits rather than duty refunds. The Tribunal held that the limitation rule under Section 11B, including the concept of relevant date, did not apply to such unutilised balances lying in the assessee's account current. It further held that the proviso to Section 11B(2) protects these unspent advance deposits and that credit to the Consumer Welfare Fund was unnecessary. The doctrine of unjust enrichment also had no application to this category of refund.

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Issues: Whether the refund of amounts deposited during investigation, which remained unutilised and were never appropriated as duty after the proceedings were dropped, was barred by limitation under Section 11B of the Central Excise Act, 1944 and whether the claim was hit by unjust enrichment.

Analysis: The amount deposited by the appellant through challans was treated as an unutilised deposit and not as duty finally appropriated to the Government. The refund claim arose after the adjudication proceedings were dropped, and the Tribunal held that the limitation clause applicable to refunds of duty, including the concept of relevant date under Section 11B, did not govern such unspent deposit lying in the account current. The proviso to Section 11B(2) specifically protects unspent advance deposits lying in balance in the applicant's account current, and such amounts are refundable without crediting the Consumer Welfare Fund. The Tribunal also held that unjust enrichment had no application to this category of refund.

Conclusion: The refund claim was not time-barred and was not affected by unjust enrichment; the issue was decided in favour of the assessee.

Final Conclusion: The appeal succeeded and the refund rejection was set aside.

Ratio Decidendi: Unspent deposits lying in an assessee's account current, which are not appropriated as duty, are refundable under Section 11B without being subjected to the ordinary limitation rule for duty refunds or the doctrine of unjust enrichment.

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