Section 74 requires foundational facts of fraud, wilful...

Section 74 requires foundational facts of fraud, wilful misstatement, or deliberate suppression with intent to evade tax; mechanical allegations cannot support extended limitation or penalty. Where credit entries were disclosed in statutory returns, the Section 74 demand and penalty were set aside, with any tax payable to be determined under the Section 73 framework through Section 75(2). A consolidated show cause notice spanning multiple financial years is permissible where the full demand is within limitation and no appellate prejudice results. Input tax credit discrepancies require factual verification and an opportunity to provide supporting evidence, requiring fresh adjudication. Interest follows tax ultimately determined payable and must be recomputed.