Interest relief: Chief Commissioner or Director General may reduce or waive tax interest where return filed and tax paid. The Chief Commissioner of Income tax and the Director General of Income tax may order reduction or waiver of interest under sections 234A, 234B and 234C in specified classes of cases, provided the assessee has filed the return for the relevant assessment year and paid the entire assessed tax except the interest sought to be reduced or waived; the authorities may impose additional conditions and must be satisfied on the facts that reduction or waiver is appropriate.