"Tax year," "taxable year."

RCW 82.04.020
in effect
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"Tax year" or "taxable year" means either the calendar year, or the taxpayer's fiscal year when permission is obtained from the department of revenue to use a fiscal year in lieu of the calendar year. "Tax year" or "taxable year" means either the calendar year, or the taxpayer's fiscal year when permission is obtained from the department of revenue to use a fiscal year in lieu of the calendar year.
Source: WA Statutes (Official Site)URL: https://app.leg.wa.gov/RCW/default.aspx?cite=82.04&full=trueFetched: 6/29/2026

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