S. 244 : Refund-Interest on refunds-Not entitle to interest at the rate of 18 per ccent-Salary paid in arrears or in advance-Refundable amount-Relief under section 89 is to be considered at time of calculating payable amount of tax there is no provision in Act to refund amount of relief granted under section 89 as it is [. S. 89(1), 237, Art. 226]