(5)The amount of tax, interest or penalty already determined shall be adjusted after incorporating the decision taken under mutual agreement procedure in the manner provided under the Income-tax Act, 1961 (43 of 1961), or the rules made thereunder to the extent that they are not contrary to the resolution arrived at.Explanation. - For the purposes of rules 44G and 44H, "Competent Authority of India" shall mean an officer authorised by the Central Government for the purposes of discharging the functions as such.