(a) If a vendor refuses to sell at a price exclusive of the State and local tax, the contracting officer must use Standard Form (SF) 1094, U.S. Tax Exemption Certificate, as a basis for billing taxing authorities for a refund of taxes paid.
(b) A contracting officer may not furnish an SF 1094 to a vendor or use SF 1094 to claim reimbursement from the taxing authority when the total amount of State and local tax on any one purchase is $10 or less.