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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 more than 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 Seeks West Coast Tax Counsel

COST has begun the search for a new West Coast TaxCounsel to replace Greg Turner.  If you are interested or know of a candidate, please click here for more information.

2015 Sales Tax Conference

February 24 - 26, 2015
Loews Portofino
Orlando, Florida
Click Here For More Information 

Support the Mobile Workforce State Income Tax Simplification Act

The new 114th Congress was sworn in on January 6, 2015, and COST will continue to lead the coalition effort to pass the Mobile Workforce State Income Tax Simplification Act, federal legislation to establish a national standard to protect traveling employees from onerous nonresident state income tax withholding rules.  U.S. House and Senate companion bills will have new numbers, and should be reintroduced soon.  Coalition activities will also resume soon, so please consider joining COST and more than 265 other companies and organizations in SUPPORT of a federal fix for nonresident state income tax withholding. Please contact Maureen Riehl for more information.