Tax Day Extension 2024 Usa. “tax day” is april 15, 2024, but there are many other tax deadlines throughout the year depending on your business entity type. Most taxpayers who requested an extension of time to file their 2023 tax return must file by tuesday, oct.

An extension gives you until oct. With a tax extension, you have until october 15, 2024 to file your 2023 tax return.