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Events

COST offers its members high quality education, including conferences, schools, regional meetings, live webinars and special symposia, featuring the hottest topics, delivered by the nation's most recognized experts, at a price well below comparable programs.  In addition, COST highlights state tax events hosted by Practitioner Partners.

Upcoming COST Events

  • 2025 Intermediate/Advanced State Income Tax School

    May 18, 2025

  • 2025 Intermediate/Advanced Sales & Use Tax School

    May 18, 2025

  • 2025 SALT Basics School

    May 18, 2025

  • Basking Ridge, NJ - Mid-Atlantic Regional State Tax Seminar

    June 04, 2025

  • California Corporate Income Tax Webinar

    June 18, 2025

  • Dallas, TX - Southwest/West Regional State Tax Seminar

    June 25, 2025

  • Houston, TX - Southwest/West Regional State Tax Seminar

    July 15, 2025

  • Birmingham, AL - Southeast Regional State Tax Seminar

    August 07, 2025

View All COST Events

Upcoming Non-COST Events

  • EY: International Tax Talk Quarterly Series With the EY Global Tax Desk Network

    May 13, 2025

  • PwC: Q2 2025 Sustainability Webcast

    May 14, 2025

  • EY: Financial Services Tax and Finance Transformation Trends and Opportunities for 2025

    May 14, 2025

  • PwC: Tax Readiness: Turning Pillar Two challenges into opportunities

    May 19, 2025

  • EY: Navigating the New UK Personal Tax and Immigration Landscape

    May 20, 2025

  • Sales Tax Institute/YETTER: How to Build and Manage a Sales Tax Function for Growth

    May 29, 2025

  • PwC: Tax Readiness: IRS updates and evolving controversy landscape

    May 29, 2025

  • EY: US and Global Private Industry Trends Q2 2025

    June 05, 2025

View All NON COST Events

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COST Events offer a variety of sponsorship opportunities.  

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