State Tax Websites

Alabama Department of Revenue
Alaska Department of Revenue
Arizona Department of Revenue
Arkansas Department of Finance and Administration

California:
State Board of Equalization (Property, sales and excise taxes)
State of California Franchise Tax Board (Individual income and corporate taxes)
Employment Development Department (Withholding Taxes)

Colorado Department of Revenue
State of Connecticut Department of Revenue Services
State of Delaware Division of Revenue
District of Columbia Office of the Chief Financial Officer
Florida Department of Revenue
Georgia Department of Revenue
Guam Department of Revenue and Taxation
State of Hawaii Department of Taxation
Idaho State Tax Commission
Illinois Department of Revenue
Indiana Department of Revenue
Iowa Department of Revenue
Kansas Department of Revenue
Kentucky Department of Revenue
Louisiana Department of Revenue
Maine Revenue Services
Maryland Department of Assessments & Taxation
Massachusetts Department of Revenue
Michigan Department of Treasury
Minnesota Department of Revenue
Mississippi State Tax Commission
Missouri Department of Revenue
Montana Department of Revenue
Nebraska Department of Revenue
Nevada Department of Taxation
New Hampshire Department of Revenue Administration

New Jersey:
New Jersey Division of Taxation
New Jersey Division of Revenue

State of New Mexico Taxation & Revenue

New York:
New York State Department of Taxation & Finance
City of New York Department of Finance

North Carolina Department of Revenue
North Dakota Office of State Tax Commissioner
Ohio Department of Taxation
Oklahoma Tax Commission
Oregon Department of Revenue
Pennsylvania Department of Revenue
Puerto Rico Departamento de Hacienda
State of Rhode Island Division of Taxation
South Carolina Department of Revenue
South Dakota Department of Revenue & Regulation
Tennessee Department of Revenue
Texas Window on State Government
Utah State Tax Commission
Vermont Department of Taxes
Virginia Department of taxation
Washington State Department of Revenue
West Virginia Department of Revenue
Wisconsin Department of Revenue
Wyoming Department of Revenue