Section 12A(1) in Himachal Pradesh General Sales Tax Act, 1968
(1)Notwithstanding anything to the contrary contained in section 13, every person making any payment or discharge of any liability on account of valuable consideration payable for the transfer of property in goods, whether as goods or in some other form, involved in the execution of works contract shall deduct an amount not exceeding four per centum as may be prescribed, purporting to be a part or full of the tax payable on such sales, from the bills or invoices raised by the works contractor as payable by the persons:Provided that no such payment or discharge of any bill raised by the works contractor shall be made without deduction:Provided further that if the State Government is satisfied that it is necessary to do so in the interest of the State revenue, it may notify the names/posts of such persons who shall be competent persons to make such deduction.