The Tennessee Chamber of Commerce & Industry is the only organization in the state protecting and promoting the interests of the business taxpayer. Whether its sales taxes, property taxes, franchise taxes or excise taxes, Chamber represents businesses before the state legislature, before the state Department of Revenue and the Courts. Tennessee Department of Revenue -- State Taxes -- E-File Information and Links -- Streamlined Sales Tax Internal Revenue Service Streamlined Sales Tax System Council On State Taxation (COST)		Total State and Local Business Taxes 50-state estimates for fiscal year 2007