October Tax Deadline 2024 Extension. For tax year 2023 (filed in 2024), you needed to submit your tax extension request by monday, april 15—the regular tax filing deadline—or face a penalty. Most taxpayers who requested an extension of time to file their 2023 tax return must file by tuesday, oct.

15 extension deadline to file taxes is fast approaching. For tax year 2023 (filed in 2024), you needed to submit your tax extension request by monday, april 15—the regular tax filing deadline—or face a penalty.