Interest payable by Proprietor.

(1)If any proprietor does not pay into a Government treasury the full amount of tax due from him under this Act on the basis of the return or his account books within the prescribed date, simple interest at the rate of twenty five percent per annum from the first day of the month next following the said date shall be payable by the proprietor upon the amount by which the tax so paid falls short of the amount of tax payable as per his return or account books. (2) If the amount of tax paid within the prescribed date is not less than ninety percent of the tax finally assessed, no interest as provided for in sub-section (1) of this section shall be levied.