| Alabama (AL) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Alaska (AK) | No Filing Required | No State Tax |
| Arizona (AZ) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Arkansas (AR) | January 31 | Filing is mandatory, regardless of any withholdings. |
| California (CA) | No Filing Required | State Tax Exists but No Filing Required |
| Colorado (CO) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Connecticut (CT) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Delaware (DE) | January 31 | Filing Required Only If Withholding |
| District of Columbia (DC) | January 31 | Filing Required Only If Withholding |
| Florida (FL) | No Filing Required | No State Tax |
| Georgia (GA) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Hawaii (HI) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Idaho (ID) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Illinois (IL) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Indiana (IN) | January 31 | Filing Required Only If Withholding |
| Iowa (IA) | February 15 | Filing Required Only If Withholding |
| Kansas (KS) | January 31 | Filing Required Only If Withholding |
| Kentucky (KY) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Louisiana (LA) | January 31 | Filing Required Only If Withholding |
| Maine (ME) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Maryland (MD) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Massachusetts (MA) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Michigan (MI) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Minnesota (MN) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Mississippi (MS) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Missouri (MO) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Montana (MT) | January 31 | Filing Required Only If Withholding |
| Nebraska (NE) | January 31 | Filing Required Only If Withholding |
| Nevada (NV) | No Filing Required | No State Tax |
| New Hampshire (NH) | No Filing Required | No State Tax |
| New Jersey (NJ) | February 15 | Filing is mandatory, regardless of any withholdings. |
| New Mexico (NM) | January 31 | Filing Required Only If Withholding |
| New York (NY) | No Filing Required | State Tax Exists but No Filing Required |
| North Carolina (NC) | January 31 | Filing is mandatory, regardless of any withholdings. |
| North Dakota (ND) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Ohio (OH) | January 31 | Filing Required Only If Withholding |
| Oklahoma (OK) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Oregon (OR) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Pennsylvania (PA) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Rhode Island (RI) | January 31 | Filing Required Only If Withholding |
| South Carolina (SC) | January 31 | Filing is mandatory, regardless of any withholdings. |
| South Dakota (SD) | No Filing Required | No State Tax |
| Tennessee (TN) | No Filing Required | No State Tax |
| Texas (TX) | No Filing Required | No State Tax |
| Utah (UT) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Vermont (VT) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Virginia (VA) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Washington (WA) | No Filing Required | No State Tax |
| West Virginia (WV) | January 31 | Filing Required Only If Withholding |
| Wisconsin (WI) | January 31 | Filing is mandatory, regardless of any withholdings. |
| Wyoming (WY) | No Filing Required | No State Tax |
