Alabama (AL) Alabama Department of Revenue or Alaska DOR Tax Division
Alaska (AK) May use Federal EIN at IRS.gov
Arizona (AZ) State of Arizona Department of Revenue
Arkansas (AR) Arkansas Department of Finance and Administration
California (CA) California Tax Service Center
Colorado (CO) Colorado Department of Revenue
Connecticut (CT) Connecticut Department of Revenue Services
Delaware (DE) Delaware Department of Finance
District of Columbia (DC) Government of the District of Columbia
Florida (FL) Florida Department of Revenue or State of Florida
Georgia (GA) Georgia Department of Revenue
Hawaii (HI) Hawaii Department of Taxation
Idaho (ID) Idaho State Tax Commission
Illinois (IL) Illinois Department of Revenue
Indiana (IN) Indiana Secretary of State
Iowa (IA) Iowa Department of Revenue
Kansas (KS) Kansas Business Center
Kentucky (KY) Kentucky Department of Revenue
Louisiana (LA) Louisiana Department of Revenue
Maine (ME) Maine Revenue Services
Maryland (MD) Maryland Department of Assessments & Taxation
Massachusetts (MA) Massachusetts Department of Revenue
Michigan (MI) Michigan.gov
Minnesota (MN) Minnesota Department of Revenue
Mississippi (MS) Mississippi Department of Revenue
Missouri (MO) Missouri Department of Revenue
Montana (MT) Montana Department of Revenue
Nebraska (NE) Nebraska Department of Revenue
Nevada (NV) Nevada does not have personal or corporate income tax. Nevada Department of Taxation or http://tax.state.nv.us/
New Hampshire (NH) New Hampshire Department of Revenue Administration
New Jersey (NJ) Division of the Treasury - Department of Taxation
New Mexico (NM) New Mexico Taxation and Revenue Department
New York (NY) NYS Department of Taxation and Finance
North Carolina (NC) NC DES
North Dakota (ND) North Dakota Office of Tax Commissioner for SIT (PDF)
Ohio (OH) Ohio Department of Taxation
Oklahoma (OK) Oklahoma Tax Commission
Oregon (OR) Oregon Department of Revenue
Pennsylvania (PA) Pennsylvania Department of Revenue
Rhode Island (RI) State of Rhode Island Business Registration
South Carolina (SC) South Carolina Department of Revenue
South Dakota (SD) South Dakota does not have personal or corporate income tax.
Tennessee (TN) No withholding tax in TN
Texas (TX) Texas does not have personal or corporate income tax.
Utah (UT) Utah.gov
Vermont (VT) Vermont Department of Taxes
Virginia (VA) Virginia Department of Taxation
Washington (WA) Washington State does not have personal or corporate income tax.
West Virginia (WV) West Virginia Department of Commerce
Wisconsin (WI) Wisconsin Department of Revenue
Wyoming (WY) Wyoming does not have personal or corporate income tax.