Extended limitation period: requires proof of fraud or wilful suppression; mere self-assessment errors are insufficient.
The tribunal held that invocation of the extended period of limitation for recovery of irregularly availed CENVAT credit requires affirmative grounds such as fraud, collusion, wilful misstatement, or suppression of facts; mere incorrect self-assessment, audit disagreement, or discovery during audit does not establish the necessary intent to evade, and therefore demands beyond the normal limitation period (except conceded amounts) could not be sustained.