Circular : No. 486 -Income Tax I am directed to invite a reference to this Department’s Circular No. 460 [F.No. 275/68/86-IT(B)], dated 3-7-1986 on the above subject wherein you were requested to issue necessary instructions to all the Treasury Officers, etc., for making deduction of income-tax at source from the payment of “Interest on Government Securities” for the financial year 1986-87.