2024 Tax Extension Deadline Date 2024. Your guide to filing a tax extension, including key dates, how to file a tax extension in 2024 and the. For the 2023 tax year, filed in 2024, llcs filing as sole proprietors must submit form 1040 by april 15 without an extension.

If you requested an extension before april 15, 2024, you have extra time to file your return. However, remember that it doesn’t grant you a tax payment extension.