Dispute Resolution Committee may waive penalties imposed or imposable, including under reporting penalties, effective 1 April 2026. The amendment substitutes 'waive any penalty imposed or imposable' in section 379(2), enabling the Dispute Resolution Committee to waive penalties already imposed in assessment orders as well as penalties merely imposable, including the penalty for under reporting of income referenced elsewhere in the Bill, within the Committee's existing eligibility and procedural framework; effective 1 April 2026.