Customs assessment correction under Section 154 upheld where the prevailing duty rate was not applied correctly.

Customs assessment may be corrected under Section 154 where the recorded duty reflects an error arising from an accidental slip or omission, including failure to apply the prevailing rate of duty. The relevant date for determining the applicable customs duty rate is the date the vessel enters inwards, not the date of presentation of the bill of entry. Section 28, which addresses short levy in a different context, is not the proper provision for correcting this kind of assessment mistake. The customs authorities' correction was therefore valid and the challenge failed in favour of the Revenue.

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Issues: Whether the customs authorities were entitled to correct the initial assessment under Section 154 of the Customs Act on the ground that it resulted from an error in not applying the newly publicised rate of duty, and whether Section 28 of the Customs Act was the proper provision for such correction.

Analysis: The assessment was made on an erroneous assumption that the old rate of duty continued to apply, whereas the new rate had already come into force before the vessel entered inwards. Section 154 authorises correction of clerical or arithmetical mistakes and errors arising from accidental slip or omission, and the error in the assessment fell within that category because the record did not reflect the correct duty payable under the prevailing rate. Section 28 deals with short levy in a different situation and was not the appropriate provision for correcting this kind of mistake. The date relevant for the duty rate was the date of entry inwards of the vessel, and not the date of presentation of the bill of entry.

Conclusion: The correction made by the customs authorities was valid, Section 154 was rightly invoked, and Section 28 was inapplicable. The decision is in favour of the Revenue.

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