Relevant Language:
TITLE 82 - EXCISE TAXES, CHAPTER 82.32 - GENERAL ADMINISTRATIVE PROVISIONS, § 82.32.330 - DISCLOSURE OF RETURN OR TAX INFORMATION (1) For purposes of this section...(b) "Return" means a tax or information return or claim for refund required by, or provided for or permitted under, the laws of this state which is filed with the department of revenue by, on behalf of, or with respect to a person, and any amendment or supplement thereto, including supporting schedules, attachments, or lists that are supplemental to, or part of, the return so filed;(c) "Tax information" means (i) a taxpayer's identity, (ii) the nature, source, or amount of the taxpayer's income, payments, receipts, deductions, exemptions, credits, assets, liabilities, net worth, tax liability deficiencies, overassessments, or tax payments, whether taken from the taxpayer's books and records or any other source, (iii) whether the taxpayer's return was, is being, or will be examined or subject to other investigation or processing, (iv) a part of a written determination that is not designated as a precedent and disclosed pursuant to RCW 82.32.410, or a background file document relating to a written determination, and (v) other data received by, recorded by, prepared by, furnished to, or collected by the department of revenue with respect to the determination of the existence, or possible existence, of liability, or the amount thereof, of a person under the laws of this state for a tax, penalty, interest, fine, forfeiture, or other imposition, or offense. However, data, material, or documents that do not disclose information related to a specific or identifiable taxpayer do not constitute tax information under this section. Except as provided by RCW 82.32.410, nothing in this chapter requires any person possessing data, material, or documents made confidential and privileged by this section to delete information from such data, material, or documents so as to permit its disclosure;...(2) Returns and tax information are confidential and privileged, and except as authorized by this section, neither the department of revenue nor any other person may disclose any return or tax information.