I am an accountant of an approved superannuation trust and our funds are invested in various financial instruments. Tax has been deducted from the interest income paid to us even though we have exemption u/s 10(25). Now we want to file ITR 5. We will fill the income details in Schedule EI. But do we need to fill up the Balance Sheet and Profit and Loss schedules as well? Moreover, do we need to file the return within 31 July to avail the exemption?