Llc Tax Extension Deadline 2024. For the 2023 tax year, to be filed in 2024, llcs classified as sole proprietors must submit form 1040 by april 15th, unless an extension is obtained. Any taxes owed should still be paid by the original tax deadline.

The income tax department and the union finance ministry have been sending reminders to taxpayers through emails and sms to. With an extension, the deadline for filing is october 15.