S. 43(5) : Speculative transaction–Hedging contracts with bank– Loss on fluctuation in foreign currency–Interest was paid on fixed rate of 1.7 percent on loan amount–Not speculative in nature eligible as deduction–Interest is held to be allowable–Premium is held to be allowable on proportionate basis. [S. 36(1)(iii), 37(1), 40(a)(ia), 195]