Manner of computation of interest and waiver thereof to be prescribed
211. (1) The Board may prescribe the manner of computation of interest payable by, or to the, assessee and all other matters connected therewith.
(2) The Board may, having regard to the hardship caused to the assessee and the interest of revenue, prescribe the circumstances, manner and all other connected matters for providing relief by reducing the interest payable or refunding the interest paid so, however, that the aggregate of the amount so reduced, or refunded, shall not exceed fifty per cent. of the total interest payable.