Penalty procedure under income tax law requires hearing, prior approval, faceless scheme compliance, and law-on-date-of-default assessment. Penalty under this Chapter requires compliance with the principles of hearing and prior approval. No penalty order may be made unless the assessee has been heard or given a reasonable opportunity of being heard through a show-cause notice, and an order passed without such opportunity is void ab initio. In specified cases, prior approval of the Joint Commissioner is required. The note also refers to a faceless or scheme-based penalty mechanism, forwarding of the penalty order to the Assessing Officer, and determination of penalty according to the law prevailing on the date of default.