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2024 Louisiana State Tax Deadlines

Louisiana Individual Income Tax Filing deadlines and extensions for 2024 tax professionals to reference when working with clients in Louisiana.

If your client is a resident of Louisiana or has been involved in significant business operations within the state, they might be required to file Louisiana State Taxes. This document outlines the most important tax deadlines and tax extensions for Louisiana in 2024.

2024 Louisiana State Tax Deadlines

Louisiana Individual Income Tax Filing deadlines and extensions for 2024.

If you are a resident or have been involved in significant business operations within Louisiana then you might be required to file Louisiana State Taxes. We look at the most important tax deadlines and tax extensions for Louisiana in 2024.

Louisiana Business Tax Deadlines for 2024

C Corporation

Louisiana C Corporation Tax Deadlines for 2024

You must file & pay Corporate Income Taxes in Louisiana on behalf of your C Corporation clients by May 15, 2025.

  • File Online with the Louisiana Department of Revenue.
  • File by Mail must be postmarked by the due date.
  • Form: CIFT-620 – Louisiana Corporation Income and Franchise Tax Return.

Extension to File Taxes in Louisiana for 2024

You must send a payment for taxes in Louisiana for the fiscal year 2024 on behalf of your C Corporation clients by May 15, 2025.

The Extension Deadline is November 15, 2025, to file your Louisiana corporate income tax return.

Louisiana automatically grants a 6-month extension for filing corporate income tax returns. This means you do not need to file for an extension in Louisiana.

This is an extension to FILE, not an extension to PAY – payment is still due May 15, 2025.

Pass-Throughs

Louisiana S Corporation & Partnership Tax Deadlines for 2024

You must file in Louisiana on behalf of your S Corporation and Partnership clients by May 15, 2025.

  • File Online with the Louisiana Department of Revenue.
  • File by Mail must be postmarked by the due date.
  • Forms:
    • Form IT-565 – Partnership Return of Income
    • Form CIFT-620 – S Corporation Income Tax Return

Extension to File S Corporation & Partnership Taxes in Louisiana for 2024

You must send a payment for taxes in Louisiana for the fiscal year 2024 on behalf of your S Corporation and Partnership clients by May 15, 2025.

The Extension Deadline is November 15, 2025, to file your Louisiana pass-through entity tax return.

Louisiana automatically grants a 6-month extension for filing pass-through entity tax returns. This means you do not need to file for an extension in Louisiana.

This is an extension to FILE, not an extension to PAY – payment is still due May 15, 2025.

Louisiana Individual Tax Deadlines for 2024

Estimated Tax Deadline for Louisiana 2024

Estimated tax payments for your individual clients in Louisiana are made:

  • April 15, 2024
  • June 15, 2024
  • September 16, 2024
  • January 15, 2025

Individual Tax Deadline for Louisiana 2024

You must file & pay Individual Income Taxes in Louisiana on behalf of your individual clients by May 15, 2025.

  • File Online with Louisiana Department of Revenue
  • File by Mail must be postmarked by the due date
  • Applicable forms:
    • Form IT-540 – Resident Return
    • Form IT-540B – Nonresident and Part-Year Resident Return

Extension to File Taxes in Louisiana for 2024

You must send payment for taxes in Louisiana for the fiscal year 2024 on behalf of your individual clients by May 15, 2025.

The Extension Deadline is November 15, 2025, to file your Louisiana Individual Income tax return.

Louisiana automatically grants a 6-month extension on filing personal income taxes. This means you do not need to file for an extension in Louisiana.

This is an extension to FILE, not an extension to PAY – payment is still due May 15, 2025.

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The material discussed on this page is meant for general illustration and/or informational purposes only and is not to be construed as investment, tax, or legal advice. You must exercise your own independent professional judgment, recognizing that advice should not be based on unreasonable factual or legal assumptions or unreasonably rely upon representations of the client or others. Further, any advice you provide in connection with tax return preparation must comply in full with the requirements of IRS Circular 230.

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Tax Planning Strategies

Our team of tax experts has scoured tax rules and regulations to create detailed tax strategies you can use to find savings for your clients.

Tax Planning Glossary

Let’s face it, taxes can be confusing. Learn the terms you need to know in our tax planning glossary.

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