89. (1) Without prejudice to the provision of section 87, where any business or profession is discontinued in any financial year, and assessment may be made in that year, notwithstanding anything contained in section 16, on the basis of the total income of the period between the end of the income year and the date of such discontinuance in addition to the assessment, if any, made on the basis of the income year. (2) Any person discontinuing any business or profession in any financial year shall give to the Deputy Commissioner of Taxes a notice of such discontinuance within fifteen days thereof; and such notice shall be accompanied by a return of total income in respect of the period between the end of the income year and the date of such discontinuance and that financial year shall be deemed to be the assessment year in respect of the income of the said period. (3) Where, a person fails to give the notice required by sub-section (2), the Deputy Commissioner of Taxes may direct that a sum shall be recovered from him by way of penalty not exceeding the amount of tax subsequently assessed on him in respect of any income from the business or profession up to the date of its discontinuance. (4) Where an assessment is to be made under sub-section (1), the Deputy Commissioner of Taxes may serve- (a) on the person whose income is to be assessed; (b) in the case of a firm, on the person who was a partner of the firm at the time of discontinuance of the business or profession; and (c) in the case of a company, on the principal officer of the company; a notice to furnish within such time, not being less than seven days, a return of his total income giving such particulars and information as are required to be furnished with a return to be filed under section 75 along with such other particulars, records and documents as may be specified in the notice. (5) The provisions of this Ordinance shall, so far as may be, apply to a notice under sub-section (4) for the purpose of assessment of tax as if it were a notice under section 77.