(1) The application to the Chief Commissioner or Commissioner under section 258(2) for information relating to an assessee in respect of any assessment made either under the Act or under the Income Tax Act, 1961 (43 of 1961), as it existed prior to its repeal, shall be made in Form No. 88.

(2) The information under section 258(2) shall be furnished by the Chief Commissioner or Commissioner in Form No. 89.

(3) Where it is not possible for the Chief Commissioner or Commissioner to furnish the information asked for by the applicant under section 258(2) owing to the fact that the relevant assessment has not been completed, he shall inform the applicant in Form No. 90.

(4) Where the Chief Commissioner or Commissioner are satisfied that it is not in the public interest to give or cause to be given the information asked for, he shall intimate the fact to the applicant in Form No. 91.