Victims in federally declared disaster areas have additional time to file various federal individual and business tax returns and make tax payments. Storm date: April 19, 2023 (severe storms, straight-line winds and tornadoes) New tax deadline: Aug. 31, 2023, for returns and payments originally due between April 19 and Aug. 31, 2023. Affected counties: Cleveland, McClain and Pottawatomie Detailed information: OK-2023-01, IRS announces tax relief for victims of severe storms, straight-line winds and tornadoes in Oklahoma Issued guidance IRS announces tax relief for victims of severe storms, straight-line winds and tornadoes in Oklahoma OK-2023-01, April 24, 2023 IRS announces tax relief for Oklahoma severe storms, tornadoes and flooding victims OK-2022-02, July 5, 2022 IRS announces tax relief for Oklahoma severe winter storm victims OK-2021-01, Feb. 25, 2021 IRS announces tax relief for Oklahoma victims of severe storms, tornadoes, straight-line winds, and flooding OK-2019-01, June 3, 2019 How to contact your local IRS office