Upcoming COST Events California Sales Tax & Other Transactional Taxes Webinar February 12, 2026 Nashville, TN - Southeast Regional State Tax Seminar February 26, 2026 2026 SALT In A Digital World Workshop March 02, 2026 Omaha, NE - Mid-West Regional State Tax Seminar March 31, 2026 2026 Spring Conference / Audit Session April 20, 2026 2026 Intermediate/Advanced State Income Tax School May 17, 2026 2026 Intermediate/Advanced Sales & Use Tax School May 17, 2026 2026 SALT Basics School May 17, 2026
Upcoming Non-COST Events State Tax Law: Influential SALT Case Law - Top Income & Sales Tax Cases January 07, 2026 PwC: 2026 Tax Policy Outlook — What’s on the horizon January 08, 2026 Sales Tax Institute/YETTER: Advanced Sales and Use Tax Workshop 2026 February 23, 2026
