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04-20-2026 - 04-23-2026
Presenting an update on significant state tax issues for the Southwest/West States: Illinois, Indiana, read more
03-31-2026 | 08:30 - 15:15 ET Omaha NE
This Workshop will cover the key state and local tax issues that affect everyone using technology in read more
03-02-2026 13:00 - 03-04-2026 11:00 ET Burlingame CA
Four day intense program for tax attorneys and accountants with more than three years of multi-state read more
05-17-2026 18:00 - 05-21-2026 13:00 ET Atlanta GA
COST’s Annual Meeting offers sessions for every state tax and government affairs professional with tax read more
09-22-2026 13:00 - 09-25-2026 12:00 ET San Antonio TX
Join industry tax peers to hear an update on significant California sales tax and other transactional read more
02-12-2026 | 13:00 - 16:00 ET
122 C Street, NWSuite 330Washington, DC 20001Phone(202) 484-5222
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