---
type: "event"
title: "COST Pacific Northwest Regional State Tax Seminar, Oct 22"
description: "Oct 22, 2026, Seattle. Dates, venue, pricing and registration details on accounting.events."
resource: "https://accounting.events/events/cost-pacific-northwest-regional-state-tax-seminar/"
tags: ["event", "Tax", "United States", "2026"]
timestamp: "2026-09-23"
---

# COST Pacific Northwest Regional State Tax Seminar

COST Pacific Northwest Regional State Tax Seminar runs Oct 22, 2026 in Seattle, Washington.



- **When:** Oct 22, 2026 (dates published)
- **Where:** Seattle, Washington · United States
- **Organiser:** COST
- **Format:** In person
- **Type:** Tax
- **Official site:** https://www.cost.org/events/COST-Events/seattle-wa---pacific-northwest-regional-state-tax-seminar/

Source: https://www.cost.org/events/COST-Events/seattle-wa---pacific-northwest-regional-state-tax-seminar/ (checked 2026-09-23)