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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

2009 COST Calendar of Events

The complete 2009 COST Calendar of National Conferences and Schools is available!  Please use this one pager to mark your calendar, save the date and include your colleagues.  Click Here. 

2009 SALT Basics School

REGISTER NOW!!

January 25-30, 2009
Atlanta, Georgia
Georgia Tech Hotel & Conference Center 

Click Here For More Information 

COST Releases Combined Reporting Study

The analysis in this paper suggests that combined reporting is not a panacea for addressing the problem of how to accurately determine multistate business income attributable to economic activity in a state. 

Click Here For More Details.