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If you are a tax professional and would like to find out how COST can help you do your job better, click below.

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welcome to cost

The Council On State Taxation (COST) is the premier state tax organization representing taxpayers.  COST is a nonprofit trade association consisting of over 600 multistate corporations engaged in interstate and international business.  COST's objective is to preserve and promote equitable and nondiscriminatory state and local taxation of multijurisdictional business entities.


featured news

COST 's 2010 Scorecard on State Tax Appeals and Procedural Requirements

The scorecard evaluates each state based on statutes governing fair, efficient and customer-focused tax administration.

Click here to view the study.  

2009 COST Annual Report

The 2009 Annual Report is available in electronic format.  The report highlights the many successes of COST and its membership in 2009.  Click here to view full report. 

2010 Intermediate-Advanced Income & Sales Tax Schools

April 25-29, 2010
Atlanta, Georgia
Georgia Tech Hotel & Conference Center
Income Tax School - Click Here
Sales Tax School - Click Here 

2010 COST Calendar of Events

The complete 2010 COST Calendar of National Conferences and Schools is available!  Please use this one pager to mark your calendar, save the date and invite your colleagues.  Click Here.