S. 37(1):Business expenditure -Contribution to recognized provident fund -Payment of pension to retired employees which had been duly approved and notified by Central Government under ‘Tuticorin’ Port Trust Employees Regulations, 1979, said payment being in terms pf statutory regulation, would fall within general deductions under S. 37(i) and, same could not be brought under S. 36(1)(iv) and (v) of the Act .[ S 36(1)(iv) 36(1) (v) ]