Determination of interest payable by a dealer for delayed payment or non-payment of assessed amount of tax.

65. Where it appears to the appropriate assessing authority that a dealer is liable to pay interest under sub-section (1) of section 34 in respect of any period or periods of assessment under section 45, or section 46, or section 48 for default in making full amount of tax due from such dealer according to notice referred to in section 45, section 46,or ection 48 in respect of such period or periods by the date specified in the notice, such assessing authority shall, immediately after full payment of such tax or commencement of the proceedings under section 55, whichever is earlier, determine under sub-section (1) of section 50 the amount of interest payable by such dealer.