- Alabama Department of Revenue
- Alaska Department of Revenue
- Arizona Department of Revenue
- Arkansas Department of Finance and Administration
- California State Board of Equalization
- California Franchise Tax Board
- Colorado Department of Revenue
- Connecticut Department of Revenue Services
- Delaware Division of Revenue
- Florida Department of Revenue
- Georgia Department of Revenue
- Hawaii Department of Taxation
- Idaho State Tax Commission
- Illinois Department of Revenue
- Indiana Department of Revenue
- Iowa Department of Revenue and Finance
- Kansas Department of Revenue
- Kentucky Revenue Cabinet–Online Taxpayer Service Center
- Louisiana Department of Revenue
- Maine Revenue Services
- Maryland
- Massachusetts
- Michigan Department of Treasury
- Minnesota Department of Revenue
- Mississippi Tax Commission
- Missouri Department of Revenue
- Montana Department of Revenue
- Nebraska
- Nevada Department of Taxation
- New Hampshire Department of Revenue Administration
- New Jersey Division of Taxation
- New Mexico Taxation and Revenue
- New York Department of Taxation & Finance
- North Carolina Department of Revenue
- North Dakota State Tax Department
- Ohio Department of Taxation
- Oklahoma Tax Commission
- Oregon Department of Revenue
- Pennsylvania
- Rhode Island Division of Taxation
- South Carolina Department of Revenue
- South Dakota
- Tennessee
- Texas Window on State Government–Texas Taxes
- Utah State Tax Commission
- Vermont Department of Taxes
- Virginia Department of Taxation
- Washington Department of Revenue
- Washington D.C. Office of Tax and Revenue
- West Virginia Department of Revenue
- Wisconsin Department of Revenue
- Wyoming Department of Revenue