Irs Extension Date 2024. For the 2023 tax year, filed in 2024, llcs filing as sole proprietors must submit form 1040 by april 15 without an extension. For individuals, the last day to file your 2023 taxes without an extension is april 15, 2024, unless extended because of a state holiday.

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.