Concerning taxes imposed on insurers operating within the state.
Effective date 6/11/2026.
Summary
The law tightens Washington’s business‑and‑occupation tax exemption for insurers, limiting it to insurers that actually pay premium taxes and applying the change retroactively to 2019. It also repeals an older exemption for health plans, creates a new surcharge on very large advanced‑computing companies, and provides a one‑time waiver of penalties and interest for past underpayments. The changes are meant to close budget‑draining loopholes and fund computer‑science education.
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