| Missouri Severe Storm | Bollinger, Butler, Callaway, Camden, Carter, Dunklin, Franklin, Howell, Iron, Jefferson, Madison, New Madrid, Oregon, Ozark, Perry, Phelps, Reynolds, Ripley, Scott, Shannon, St. Louis, Stoddard, Wayne, Webster, and Wright | On or after March 30, 2025 are postponed to March 30, 2026 | Missouri Storm Relief | https://www.irs.gov/newsroom/irs-provides-tax-relief-for-taxpayers-impacted-by-severe-storms-straight-line-winds-tornadoes-and-flooding-in-multiple-counties-missouri-various-deadlines-postponed-to-march-30-2026 |