Interest.

RCW 54.28.060
in effect
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Interest at the rate as computed under RCW 82.32.050 (2) shall be added to the tax hereby imposed from the due date until the date of payment. The tax shall constitute a debt to the state and may be collected as such. Interest at the rate as computed under RCW 82.32.050 (2) shall be added to the tax hereby imposed from the due date until the date of payment. The tax shall constitute a debt to the state and may be collected as such.
Source: WA Statutes (Official Site)URL: https://app.leg.wa.gov/RCW/default.aspx?cite=54.28&full=trueFetched: 6/29/2026

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