As of March 22, 2021 these are the due dates for the following state returns. Should dates change we'll update this page. When in doubt, always check your state's webpage for taxation.
Alabama - May 17
Alaska - No state income tax
Arizona - May 17 pending
Arkansas - May 17
California - May 17
Colorado - May 17
Connecticut - May 17
Delaware - May 17
Florida - No state income tax
Georgia - May 17
Hawaii - No changes announced
Idaho - April 15
Illinois - May 17
Indiana - No changes announced
Iowa - No changes announced
Kansas - May 17
Kentucky - May 17
Louisiana - June 15
Maine - May 17
Maryland - July 15
Massachusetts - May 17
Michigan - May 17
Minnesota - May 17
Mississippi - No changes announced
Missouri - May 17
Montana - May 17
Nebraska - May 17
Nevada - No state income tax
New Hampshire - No state income tax
New Jersey - May 17
New Mexico - May 17
New York - May 17
North Carolina - May 17
North Dakota - May 17
Ohio - No changes announced
Oklahoma - June 15
Oregon - May 17
Pennsylvania - May 17
Rhode Island - May 17
South Carolina - May 17
South Dakota - No state income tax
Tennessee - May 17 for Hall income tax
Texas - No state income tax
Utah - May 17
Vermont - May 17
Virginia - May 17
Washington - No state income tax
Washington, D.C. - May 17
West Virginia - May 17
Wisconsin - May 17
Wyoming - No state income tax