State Tax Departments
Alabama: https://revenue.alabama.gov/
Alaska: NO STATE INCOME TAX
Arizona: https://azdor.gov/
Arkansas: https://www.dfa.arkansas.gov/
California: https://www.taxes.ca.gov/
Colorado: https://www.colorado.gov/revenue
Connecticut: https://portal.ct.gov/drs
Delaware: https://revenue.delaware.gov/
District of Columbia (DC): https://otr.cfo.dc.gov/
Florida: NO STATE INCOME TAX
Georgia: https://dor.georgia.gov/
Hawaii: https://tax.hawaii.gov/
Idaho: https://tax.idaho.gov/i-1015.cfm
Illinois: https://www2.illinois.gov/rev/Pages/default.aspx
Indiana: https://www.in.gov/dor/
Iowa: https://tax.iowa.gov/
Kansas: https://www.ksrevenue.org/
Kentucky: https://revenue.ky.gov/Pages/index.aspx
Louisiana: http://revenue.louisiana.gov/
Maine: https://www.maine.gov/revenue/
Maryland: https://www.marylandtaxes.gov/
Massachusetts: https://www.mass.gov/orgs/massachusetts-department-of-revenue
Michigan: https://www.michigan.gov/taxes/
Minnesota: https://www.revenue.state.mn.us/minnesota-department-revenue
Mississippi: https://www.dor.ms.gov/Pages/default.aspx
Missouri: https://dor.mo.gov/
Montana: https://mtrevenue.gov/
Nebraska: https://revenue.nebraska.gov/
Nevada: NO STATE INCOME TAX
New Hampshire: https://www.revenue.nh.gov/
New Jersey: https://www.state.nj.us/treasury/taxation/
New Mexico: http://www.tax.newmexico.gov/
New York: https://www.tax.ny.gov/
North Carolina: https://www.ncdor.gov/
North Dakota: https://www.nd.gov/tax/
Ohio: https://www.tax.ohio.gov/
Pennsylvania: https://www.revenue.pa.gov/Pages/default.aspx
Rhode Island: http://www.tax.ri.gov/
South Carolina: https://dor.sc.gov/
South Dakota: NO STATE INCOME TAX
Tennessee: https://www.tn.gov/revenue.html
Texas: NO STATE INCOME TAX
Utah: https://tax.utah.gov/
Vermont: https://tax.vermont.gov/home
Virginia: https://www.tax.virginia.gov/
Washington: NO STATE INCOME TAX
West Virginia: https://revenue.wv.gov/Pages/default.aspx
Wisconsin: https://www.revenue.wi.gov/Pages/home.aspx
Wyoming: http://revenue.wyo.gov/
