No. 21. Income Tax. 1967. by deduction or otherwise, in excess of the amount with which he is properly chargeable, such person shall be entitled to have the amount so paid in excess refunded. Every claim for repayment under this section shall be made within six years from the end of the year -of assessment to which the claim relates: (2) Except as regards sums repayable on an objection or appeal, no repayments shall be made to any person in respect of any year of assessment provided he has received a notice of assessment, as regards which- (a) that person has failed or neglected to deliver a return within the prescribed time, unless it is proved to the satisfaction of the Comptroller that such neglect or failure to deliver a trni and correct return did not proceed' from any fraud or wilful act or omission, or (b) that person has been assessed in a sum in excess of the Amount contained in his return. (3) The Comptroller shall give a certificate of the amount to be repaid and upon the receipt of the certificate the Accountant General shall cause repayment to be made in con- formity therewith. (4) No repayment shall be made under this section for any year of assessment earlier than the year, 1963. 84. The Administrator in Council may remit the whole Power to remit or any part of the tax payable by any person including any tax. interest or fees or other charges payable if he is satisfied that it would be Just and equitable to do so. PART XII. PENALTIES. 85. Any person who without reasonable excuse whether Penalty for fir not liability to tax is involved- offences. (a) is guilty of a breach of official secrecy; (b) refuses, fails or neglects to render any return or statement; (c) refuses, fails or neglects to furnish when required any accounts or particulars; (d) refuses, fails or neglects to attend or to give evidence when required to do so; (e) fails to pay over any tax which he is required to deduct;