Excise duty adjustment through RT-12 return prevails over refund limitation, subject to proof of no passing on.

Rule 173-I was treated as a self-contained mechanism for adjustment of excess excise duty shown in the RT-12 return, so a claim made through that return could not be rejected as time-barred under Section 11B merely because no separate refund application was filed within six months. The specific assessment-and-adjustment procedure prevailed over the general refund limitation, and the provisions were read harmoniously. Relief, however, remained subject to proof that the incidence of duty had not been passed on to another person, so the matter required verification of unjust enrichment before consequential adjustment could be granted.

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Issues: Whether a claim for excess excise duty shown in the RT-12 return under Rule 173-I of the Central Excise Rules, 1944 could be treated as a valid claim not barred by limitation under Section 11B of the Central Excises and Salt Act, 1944, and whether the assessee was entitled to adjustment of the excess duty subject to the bar of passing on the incidence of duty.

Analysis: Rule 173-I was treated as a self-contained provision governing assessment on the basis of the RT-12 return and permitting adjustment of excess duty without the necessity of a separate refund application within six months. The amended Section 11B did not displace that specific mechanism, and the two provisions were read harmoniously. The claim made in the return within the relevant period therefore could not be rejected merely as time-barred. At the same time, the entitlement to adjustment was held to remain subject to the requirement that the incidence of duty had not been passed on to any other person.

Conclusion: The refund was not barred by limitation, and the assessee was entitled to adjustment under Rule 173-I, but only upon establishing that the burden of duty had not been passed on.

Final Conclusion: The Revenue's challenge failed on limitation, but the matter was sent back to the original authority to verify unjust enrichment before granting the consequential adjustment.

Ratio Decidendi: Where a specific excise rule provides for adjustment of excess duty on assessment of the RT-12 return, that specific mechanism prevails over the general refund procedure and limitation under Section 11B cannot be invoked to deny relief, though the statutory bar against passing on the duty burden continues to apply.

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