https://www.taxtmi.com/caselaws?id=110433 When the assessee's valuation method, cost workings and price lists were already disclosed to the excise authorities, suppression could not be alleged and the extended period under the proviso to Section 11A was unavailable; the larger demand was therefore unsustainable. In valuing yarn, duty attached at the spindle stage when the excisable product came into existence, so the cost of later exempt processes such as warping, sizing and winding could not be added to assessable value. On that footing, penalty and interest did not survive for the disputed demand, and the liability was confined to the admitted short-levy arising from computation errors. en-us Wed, 17 Dec 2003 00:00:00 +0530 Mon, 16 Apr 2012 17:23:06 +0530 TaxTMI RSS Generator https://www.taxtmi.com/caselaws?id=110433 When the assessee's valuation method, cost workings and price lists were already disclosed to the excise authorities, suppression could not be alleged and the extended period under the proviso to Section 11A was unavailable; the larger demand was therefore unsustainable. In valuing yarn, duty attached at the spindle stage when the excisable product came into existence, so the cost of later exempt processes such as warping, sizing and winding could not be added to assessable value. On that footing, penalty and interest did not survive for the disputed demand, and the liability was confined to the admitted short-levy arising from computation errors. Case-Laws Central Excise Wed, 17 Dec 2003 00:00:00 +0530 https://www.taxtmi.com/caselaws?id=110433