RT-12 assessment liability: differential excise duty became payable on assessment without a fresh show cause notice.

Under the self-removal and RT-12 assessment mechanism, a short-paid duty difference became payable once the proper officer assessed a higher liability than the amount paid by the assessee. The liability arose from the assessment itself, so no fresh show cause notice or separate formal demand was necessary. On that footing, the later invocation of Rule 10 and Section 11A was treated as redundant, and the limitation objection based on those provisions did not survive. The differential duty remained recoverable as a statutory consequence of the assessed return process.

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Issues: (i) Whether, under the self-removal procedure and the RT-12 assessment mechanism, the amount of duty short-paid as endorsed by the proper officer became payable without the need for a fresh show cause notice or formal demand. (ii) Whether the demand was governed by the limitation provisions under Rule 10 and Section 11A of the Central Excises and Salt Act, 1944.

Issue (i): Whether, under the self-removal procedure and the RT-12 assessment mechanism, the amount of duty short-paid as endorsed by the proper officer became payable without the need for a fresh show cause notice or formal demand.

Analysis: Under the self-removal scheme, the assessee files RT-12 returns and the proper officer completes the assessment. Where the duty assessed exceeds the duty determined and paid by the assessee, the statutory obligation is to pay the deficiency by debit in the Personal Ledger Account within the prescribed time. A short-payment reflected in the assessed return is not dependent upon a further formal adjudication before recovery. The Tribunal treated the later notice and order as unnecessary because the liability had already arisen on assessment under the scheme.

Conclusion: The short-paid duty was payable on the RT-12 assessment itself and no fresh formal notice or separate order was necessary.

Issue (ii): Whether the demand was governed by the limitation provisions under Rule 10 and Section 11A of the Central Excises and Salt Act, 1944.

Analysis: Since the Tribunal held that the RT-12 assessment under the self-removal procedure itself created the liability to pay the differential duty, the later invocation of Rule 10 and Section 11A was treated as redundant. In that view, the question of time bar attached to the subsequent demand did not arise for consideration.

Conclusion: The limitation objection under Rule 10 and Section 11A did not survive.

Final Conclusion: The duty short-paid on the assessed returns remained recoverable from the assessee under the self-removal scheme, and the contrary orders were set aside to that extent.

Ratio Decidendi: In the self-removal and RT-12 assessment framework, once the proper officer assesses a higher duty liability than that paid by the assessee, the resulting differential duty becomes payable as a statutory consequence of the assessment, without the necessity of a separate show cause notice or fresh demand under the general short-levy provisions.

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