Irs Tax Filing Extension Deadline 2025. For tax year 2023 (filed in 2025), you needed to submit your tax extension request by monday, april 15—the regular tax filing deadline—or face a penalty. Individuals who had a valid extension to file their 2023 return due to run out on oct.
Getting an extension gives you more time to file, but it does not give you more time to pay your. How to file a tax extension.