Council On State Taxation

The Council On State Taxation (COST) is the premier state tax organization representing taxpayers. COST is a nonprofit trade association consisting of approximately 550 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. COST was formed in 1969 by a handful of companies under the aegis of the Council of State Chambers of Commerce, an organization with which COST is still associated.