The majority of deadlines listed here are for the 2024 tax year and are due in 2025; some apply to upcoming years and some are IRS or federal deadlines.
Prepare, eFile, Download
LA + IRS Tax Return
May 15, 2025
Income Tax Return
Prepare and e-File an IRS (Due Date April 15) and Louisiana State Income Tax Return (Due Date May 15) until
October 15, 2025. -
eFileIT
May 15, 2025
Income Tax Extension
October 15, 2025
Income Tax Return after the May 15, 2025 Louisiana Tax Extension
Last day to e-File a 2024 Louisiana State Income Tax Return for Tax Extension Filers and late eFilers. You can
only e-File (to file by paper see below) Louisiana Income Tax Return together with an IRS Tax Return -
eFileIT
November 15, 2025 via mail-in Forms.
Forms incl. Mailing Address
Income Tax Return after the May 15 Louisiana Tax Extension
Deadline for taxpayers who got a LA Tax Extension to file their Louisiana Income Tax Return by mail-in Forms - the Forms incl. mailing addresses are listed
here - is November 15. (Optionally, the
eFileIT deadline is
Oct. 15). Instructions on how to
only - without the IRS return -
prepare and file a Louisiana State Income Tax Return on eFile.com.
Tax Amendment for all Tax Years
File as soon as possible.
IRS Due Dates
IRS Tax Return, Extension, Amendment Deadlines
All State Deadlines
Other State Tax Return, Extension, Amendment Deadlines
May 15, 2026
2022 Louisiana Income Tax Return Refund
The last day to file - you will not face late filing penalties - and claim your 2022 Louisiana Income Tax Return Refund. This deadline does not apply if you owe 2022 Income Taxes. See
details on unclaimed refunds.
May 15, 2027
2023 Louisiana Income Tax Return Refund
The last day to file - you will not face late filing penalties - and claim your 2023 Louisiana Income Tax Return Refund. This deadline does not apply if you owe 2023 Income Taxes. See
details on unclaimed refunds.
May 15, 2028
2024 Louisiana Income Tax Return Refund
The last day to file - you will not face late filing penalties - and claim your 2024 Louisiana Income Tax Return Refund. This deadline does not apply if you owe 2024 Income Taxes. See
details on unclaimed refunds.