(1) Introduction. This rule explains the circumstances under which taxes may be deducted from the gross amount reported as the measure of tax under the business and occupation tax, retail sales tax, and public utility tax. It also lists deductible and nondeductible taxes.

(2) Deductibility of taxes. In computing tax liability, the amount of certain taxes may be excluded or deducted from the gross amount reported as the measure of tax under the business and occupation (B&O) tax, the retail sales tax, and the public utility tax. These taxes may be deducted provided they have been included in the gross amount reported under the classification with respect to which the deduction is sought, and have not been otherwise deducted through inclusion in the amount of another allowable deduction, such as credit losses.

The amount of taxes which are not allowable as deductions or exclusions must in every case be included in the gross amount reported. License and regulatory fees are not deductible. Questions regarding the deductibility or exclusion of a tax that is not specifically identified in this rule should be submitted to the department of revenue for determination.

(3) Motor vehicle fuel taxes. RCW 82.04.4285 provides a B&O tax deduction for certain state and federal motor vehicle fuel taxes when the taxes are included in the sales price. These taxes include:

(4) Taxes collected as an agent of municipalities, the state, or the federal government. The amount of taxes collected by a taxpayer, as agent for municipalities, the state of Washington or its political subdivisions, or the federal government, may be deducted from the gross amount reported. These taxes are deductible under each tax classification of the Revenue Act under which the gross amount from such sales or services must be reported.

This deduction applies only where the amount of such taxes is received by the taxpayer as collecting agent and is paid by the agent directly to a municipality, the state, its political subdivisions, or to the federal government. When the taxpayer is the person upon whom a tax is primarily imposed, no deduction or exclusion is allowed, since in such case the tax is a part of the cost of doing business. The mere fact that the amount of tax is added by the taxpayer as a separate item to the price of goods sold, or to the charge for services rendered, does not in itself, make such taxpayer a collecting agent for the purpose of this deduction. Examples of deductible taxes include:

(5) Specific taxes which are not deductible. Examples of specific taxes which may be neither deducted nor excluded from the measure of the tax include the following: