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How to File an Amended Louisiana Return

Louisiana State Taxes
amend Louisiana taxes
Louisiana
"The Pelican State"

When Do I Need to Prepare and File a Louisiana State Tax Amendment?

Your amended Louisiana state return should be filed within 3 years of the filing deadline for the original tax return, or 2 years from the time when tax was paid (whichever is later).

How Do I Correct My Accepted Louisiana Tax Return or File a Tax Amendment in Louisiana?

If there are changes made to your previously filed Louisiana tax return that affect your taxable income, deductions, or credits, then you must file a tax amendment form. Follow these instructions on how to amend your Louisiana return: 

  1. Download and complete either Form IT-540 (residents) or Form IT-540B (nonresidents and part-year residents) yourself.
  2. When you're finished, print out your return and mail it to one of the following addresses: Louisiana Department of Revenue, P.O. Box 3550, Baton Rouge, La 70821-3550 (if attaching a payment) or Louisiana Department of Revenue, P.O. Box 3440, Baton Rouge, La 70821-3440 (if not attaching a payment).

Louisiana State Tax Amendment Forms (download, print out, fill out, and mail)

Fill out Form IT-540 for the corresponding year if you are a resident, or Form IT-540B if you are a nonresident or a part-year resident. Make sure to indicate that it's an amended return on the form.

Resident Forms

Form (Tax Year) Description
Form IT-540 (2016) Louisiana Resident Individual Income Tax Return
Form IT-540 (2015) Louisiana Resident Individual Income Tax Return
Form IT-540 (2014) Louisiana Resident Individual Income Tax Return
Form IT-540 (2013) Louisiana Resident Individual Income Tax Return
Form IT-540 (2012) Louisiana Resident Individual Income Tax Return
Form IT-540 (2011) Louisiana Resident Individual Income Tax Return

Nonresident and Part-year Resident Forms

Form (Tax Year) Description
Form IT-540B (2016) Louisiana Nonresident and Part-Year Resident Individual Income Tax Return
Form IT-540B (2015) Louisiana Nonresident and Part-Year Resident Individual Income Tax Return
Form IT-540B (2014) Louisiana Nonresident and Part-Year Resident Individual Income Tax Return
Form IT-540B (2013) Louisiana Nonresident and Part-Year Resident Individual Income Tax Return
Form IT-540B (2012) Louisiana Nonresident and Part-Year Resident Individual Income Tax Return
Form IT-540B (2011) Louisiana Nonresident and Part-Year Resident Individual Income Tax Return

How Do I Check the Status of My Louisiana Tax Amendment?

You can call the Louisiana Department of Revenue at 1-855-307-3893.

What Are the Penalties, Interest, and Fees Associated With Louisiana Amended Tax Returns?

The state of Louisiana can charge penalties for violation of rules, including a penalty for failing to pay estimated tax or underpayment of estimated tax, which amounts to 12% of the payment due per year, compounded from the day that the particular installment was due.

A delinquent filing penalty is imposed on the taxpayer in case of failing to file a tax return by the specified due date, and amounts to 5% per month, never exceeding 25% of the total tax due.

A delinquent payment penalty is imposed when the taxpayer fails to pay the tax by the specified due date, and amounts to 0.5% per month, never exceeding 25% of the total tax due.

The state of Louisiana also charges interest on unpaid or underpaid tax, which amounts to 3% above the legal interest rate.

Where Do I Mail My Louisiana State Tax Amendment? - Louisiana Mailing Address:

If payment is attached, mail to:

Louisiana Department of Revenue
P.O. Box 3550
Baton Rouge, La 70821-3550

If no payment is attached, mail to:

Louisiana Department of Revenue
P.O. Box 3440
Baton Rouge, La 70821-3440

Louisiana Department of Revenue Phone Number: 1-855-307-3893

Louisiana Department of Revenue

Where Do I Find More Louisiana State Tax Information?

How Do I Only File My Louisiana Tax Return?

Where is my Louisiana State Tax Refund?

File a Louisiana Tax Extension

Louisiana Tax Information

What If I Need to Prepare, File My IRS Amended Tax Return?

Learn how to file a federal tax amendment.