By state
State tax deadlines
Corporate and pass-through return dates, sales tax due days, and other business taxes, state by state. Federal dates apply everywhere; see the 2026 calendar.
| State | Corporate return | Partnership / S corp | Sales tax return due | Status |
|---|---|---|---|---|
| Alabama | May 15 | March 15 | 20th of the following month | checked |
| Alaska | May 15 | April 14 | None | checked |
| Arizona | April 15 | March 15 | Statutory due date is the 20th of the month following the reporting... | checked |
| Arkansas | April 15 | April 15 | 20th of the following month | checked |
| California | April 15 | March 15 | Last day of the following month | checked |
| Colorado | May 15 | April 15 | 20th of the following month | checked |
| Connecticut | May 15 | March 15 | Last day of the following month | checked |
| Delaware | April 15 | March 15 | None | checked |
| District of Columbia | April 15 | April 15 | 20th of the following month | checked |
| Florida | May 1 | April 1 | 1st of the following month | checked |
| Georgia | April 15 | March 15 | 20th of the following month | checked |
| Hawaii | April 20 | April 20 | None | checked |
| Idaho | April 15 | April 15 | 20th of the following month | checked |
| Illinois | April 15 | April 15 | 20th of the following month | checked |
| Indiana | May 15 | April 15 | 20th of the following month | checked |
| Iowa | April 30 | April 30 | Last day of the following month | checked |
| Kansas | May 15 | April 15 | 25th of the following month | checked |
| Kentucky | April 15 | April 15 | 20th of the following month | checked |
| Louisiana | May 15 | May 15 | 20th of the following month | checked |
| Maine | April 15 | March 15 | 15th of the following month | checked |
| Maryland | April 15 | April 15 | 20th of the following month | checked |
| Massachusetts | April 15 | March 15 | 30th of the following month | checked |
| Michigan | April 30 | March 31 | 20th of the following month | checked |
| Minnesota | April 15 | March 15 | 20th of the following month | checked |
| Mississippi | April 15 | March 15 | 20th of the following month | checked |
| Missouri | April 15 | April 15 | Last day of the following month | checked |
| Montana | May 15 | March 15 | None | checked |
| Nebraska | April 15 | March 15 | 20th of the following month | checked |
| Nevada | None | Not confirmed | 20th of the following month | checked |
| New Hampshire | April 15 | March 15 | None | checked |
| New Jersey | May 15 | April 15 | 20th of the following month | checked |
| New Mexico | April 15 | March 15 | 25th of the following month | checked |
| New York | April 15 | March 15 | 20 days after the period ends | checked |
| North Carolina | April 15 | April 15 | 20th of the following month | checked |
| North Dakota | April 15 | April 15 | Last day of the following month | checked |
| Ohio | None | April 15 | 23rd of the following month | checked |
| Oklahoma | May 15 | March 15 | Sales tax for a calendar month must be reported and remitted on or... | checked |
| Oregon | May 15 | March 15 | None | checked |
| Pennsylvania | May 15 | April 15 | 20th of the following month | checked |
| Rhode Island | April 15 | March 15 | 20th of the following month | checked |
| South Carolina | April 15 | March 15 | 20th of the following month | checked |
| South Dakota | None | Not confirmed | 20th of the following month | checked |
| Tennessee | April 15 | April 15 | 20th of the following month | checked |
| Texas | None | May 15 | 20th of the following month | checked |
| Utah | See rule | Form TC-65 (Partnership/LLP/LLC Return) due on or before the 15th... | Last day of the following month | checked |
| Vermont | April 15 | March 15 | 25th of the following month | checked |
| Virginia | April 15 | April 15 | 20th of the following month | checked |
| Washington | None | Not confirmed | 25th of the following month | checked |
| West Virginia | April 15 | March 15 | 20th of the following month | checked |
| Wisconsin | April 15 | March 15 | Last day of the following month | checked |
| Wyoming | None | Not confirmed | Last day of the following month | checked |
Reading this table
Corporate return dates are for calendar-year C corporations; most states key them to the federal date or to the 15th day of the 4th month. Partnership and S corporation dates are for the state information or entity return. Sales tax due days are the general rule for the return covering the prior period; states assign monthly, quarterly, or annual filing based on liability. Each state page carries the rule text, thresholds, other business taxes, and the sources it was checked against.