*this information for Model City Tax Code purposes only
a) When tax is separately charged and/or collected. The total amount of gross income shall be exclusive of combined taxes only when the person upon whom the tax is imposed shall establish to the satisfaction of the Tax Collector that such tax has been added to the total price of the transaction. The taxpayer must provide to his customer and also keep a reliable record of the actual tax charged or collected, shown by cash register tapes, sales tickets, or other accurate record, separating net transaction price and combined tax. If at any time the Tax Collector cannot ascertain from the records kept by the taxpayer the total or amounts billed or collected on account of combined taxes, the claimed taxes collected may not be excluded from gross income, unless such records are completed and/or clarified to the satisfaction of the Tax Collector.
(1) Remittance of all tax charged and/or collected. When an added charge is made to cover City (or combined) Privilege and Use Taxes, the person upon whom the tax is imposed shall pay the full amount of the City taxes due, whether collected by him or not, and in the event he collects more than the amount due he shall remit the excess to the Tax Collector. In the event the Tax Collector cannot ascertain from the records kept by the taxpayer the total or amounts of taxes collected by him, and the Tax Collector is satisfied that the taxpayer has collected taxes in an amount in excess of the tax assessed under this Chapter, the Tax Collector may determine the amount collected and collect the tax so determined in the manner provided in this Chapter.
(2) Itemization. A taxpayer, in order to be entitled to exclude from his gross income any amounts paid to him by customers for combined taxes passed on to the customer, must prove that he has provided his customer with a written record of the transaction showing at a minimum the price before the tax, the combined taxes, and the total cost. This shall be addition to the record required to be kept under subsection (a) above.
(b) When tax has been neither separately charged nor separately collected. When the person upon whom the tax is imposed shall establish by means of invoices, sales tickets, or other reliable evidence, that no added charge was made to cover combined taxes, the taxpayer may exclude tax collected from such income by dividing such taxable gross income by 1.00 plus a decimal figure representing the effective combined tax rate expressed as a fraction of 1.00.