Deduction at source on interest from government securities remains at prior-year rates; continue existing withholding practice. Tax deduction at source on interest payable on Government securities for 1977-78 shall be made at the same rates as applied in 1976-77; until further instructions, withholding must follow the rates given in Part II of the First Schedule to the Finance Act, 1976, under Section 193 read with section 197(1) and (2).