My father getting pension of 156000 rupees annually. Beside this he is having 2 FD . among them 1is amount of 600000 rupees with 10% simple interest annually and other one is 600000 rupees with 9.75% compound interest.

My father can invest more in FD atleast 500000 rupees. If he is investing more then he has to pay the tax or how much interest can be earned without taxable limit.

      Please kindly advise………….