Suppression of material facts in excise can trigger extended limitation, penalty, and interest where duty evasion is found.

Repacking bulk goods into smaller packs was treated as manufacture under the relevant chapter note, and failure to disclose that activity amounted to suppression of material facts with intent to evade duty. On those facts, the extended period of limitation was held applicable because mere ignorance of law did not excuse non-payment. Once the duty demand was sustained on that basis, penalty under Section 11AC followed as a statutory consequence, and interest under Section 11AB was also held leviable on the delayed duty payment. The decision therefore links non-disclosure, extended limitation, and the connected penalty and interest consequences in excise matters.

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Issues: (i) Whether the extended period of limitation could be invoked on the facts found, (ii) Whether penalty under Section 11AC was sustainable, and (iii) Whether interest under Section 11AB was leviable as a consequence of the duty demand.

Issue (i): Whether the extended period of limitation could be invoked on the facts found

Analysis: Repacking of bulk goods into smaller packs was treated as manufacture under the relevant chapter note, and the assessee had not disclosed the activity to the department. The Court held that mere ignorance of law could not excuse non-payment of duty. On the facts, the non-disclosure amounted to suppression of material facts with intent to evade duty, bringing the case within the proviso to the limitation provision.

Conclusion: The extended period was rightly invoked, in favour of Revenue.

Issue (ii): Whether penalty under Section 11AC was sustainable

Analysis: Once duty liability was upheld on the basis of suppression and evasion, the statutory consequence under the penalty provision followed. The Court treated the penalty provision as mandatory where the conditions for its application were satisfied, and rejected the view that absence of deliberate disclosure would protect the assessee on these facts.

Conclusion: Penalty under Section 11AC was sustainable, in favour of Revenue.

Issue (iii): Whether interest under Section 11AB was leviable as a consequence of the duty demand

Analysis: Since the duty demand and penalty were sustained, the delayed payment of duty attracted interest as a consequential statutory liability. The Court upheld the levy of interest on the same factual foundation that justified the duty demand.

Conclusion: Interest under Section 11AB was leviable, in favour of Revenue.

Final Conclusion: The Tribunal's order was set aside and the Revenue's challenge succeeded on all substantial questions of law, resulting in restoration of the duty demand and the connected statutory consequences.

Ratio Decidendi: For invoking the extended limitation period in excise matters, the department must establish suppression of material facts with intent to evade duty, and once that foundation is made out, statutory penalty and interest provisions follow according to their terms.

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