Tax Extension Deadline 2025 October. For americans who filed for a tax extension for the 2023 tax year, the deadline is on tuesday, oct. Washington —the internal revenue service is encouraging taxpayers to file their 2023 tax year federal income tax return on or before the upcoming.

The irs urges people to file electronically. If you’re unable to file by april 15, 2025, you can request an extension, extending your filing deadline to october 15, 2025.