Show cause notice limits duty valuation, and revenue-neutral demands fail where Modvat credit offsets any duty paid.

A duty demand based on a valuation method not proposed in the show cause notice could not be sustained, because the notice defined the basis of levy and recovery and the authority could not go beyond it. The demand was also held unsustainable on revenue-neutrality grounds, as any duty paid by the assessee would have been available as Modvat credit to the sister unit, leaving no real revenue gain. On these combined grounds, the impugned order was set aside and the assessee's appeal was allowed.

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Issues: (i) whether the duty demand could be sustained when the appellate authority adopted a valuation method and quantified duty on a basis not proposed in the show cause notice; and (ii) whether the demand was unsustainable on the ground of revenue neutrality, since any duty paid by the assessee would be available as Modvat credit to the sister unit.

Issue (i): whether the duty demand could be sustained when the appellate authority adopted a valuation method and quantified duty on a basis not proposed in the show cause notice.

Analysis: The show cause notice proceeded on a specific basis for alleging undervaluation of scrap cleared to the sister unit, but the appellate authority adopted a different valuation approach and also applied a loading factor where direct comparable value was not available. The notice is the foundation for levy and recovery of duty and related penalties, and the authority could not travel beyond the case set out in the notice.

Conclusion: The demand was not sustainable to the extent it rested on a basis beyond the show cause notice and the assessee succeeded on this issue.

Issue (ii): whether the demand was unsustainable on the ground of revenue neutrality, since any duty paid by the assessee would be available as Modvat credit to the sister unit.

Analysis: The duty, if paid, would be available as credit to the sister unit, leaving the Revenue with no real gain. In such a revenue-neutral situation, the demand did not warrant interference.

Conclusion: The demand was unsustainable on the ground of revenue neutrality and this issue was decided in favour of the assessee.

Final Conclusion: The impugned order was set aside and the assessee's appeal was allowed on the combined footing that the demand exceeded the scope of the notice and the case was revenue-neutral.

Ratio Decidendi: A duty demand cannot be upheld on a valuation basis not set out in the show cause notice, and a demand is not warranted where the entire duty would be available as Modvat credit, rendering the dispute revenue-neutral.

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