7-9-89: Deduction; [gross receipts tax;] sales to certain accredited diplomats and missions.

Receipts from selling or leasing property to, or from performing services for, an accredited foreign mission or an accredited member of a foreign mission may be deducted from gross receipts when a treaty in force to which the United States is a party requires forbearance of tax when the legal incidence is upon the buyer or when the tax is customarily passed on to the buyer.