(5)The person responsible for paying any income chargeable under the head "Salaries" to the assessee—(a)shall furnish a statement in such form and manner, as may be prescribed, with correct and complete particulars of perquisites or profits in lieu of salary paid, along with their value, to the assessee;(b)shall, for the purposes of estimating income of the assessee or computing tax deductible under sub-section (1), obtain from the assessee the evidence or proof or particulars of prescribed claims (including claim for set off of loss) under the provisions of this Act in such form and manner, as may be prescribed; and(c)may, increase or reduce the amount to be deducted under this section for adjusting any excess or deficiency arising out of any previous deduction or failure to deduct during the tax year.