Monetary transaction penalty: discretion to impose a penalty equal to prohibited receipt unless good and sufficient reasons are proved.
Clause 451 empowers the Assessing Officer to impose a penalty equal to the sum received in contravention of section 186 unless the recipient proves good and sufficient reasons; the provision emphasises proportionality, vests discretion in enforcement, omits explicit procedural safeguards and mens rea, and mirrors the substantive penalty quantum and defence in the earlier statutory regime while differing in statutory tone and procedural concision.