Penalty for GST offences: higher of fixed amount or tax-equivalent charge for invoice fraud, improper credits, and non-remittance. Section 122 imposes monetary penalties for specified GST violations including invoice fraud, fictitious supplies, failure to pay or remit collected tax, incorrect deduction or collection, misuse or illegal distribution of input tax credit, fraudulent refund claims, falsification of records, failure to register or to maintain/furnish accurate registration particulars, obstruction of officers, transport without required documents, suppression of turnover, and dealing in goods liable to confiscation; penalties are the greater of a prescribed fixed amount or an amount equivalent to the tax evaded or improperly handled, with extended liability for persons retaining transaction benefits and for electronic commerce operators failing statutory collection or reporting obligations.