BATON ROUGE – The deadline for 2025 Louisiana state income tax is Friday, May 15.

Taxpayers can file their returns electronically for free through the Department of Revenue’s Louisiana Taxpayer Access Point (LaTAP) web portal. They can also submit returns using commercially available tax preparation software, or with printed copies of state income tax return IT-540, available on the Tax Forms page at www.revenue.louisiana.gov.

State law provides an automatic six-month filing extension for taxpayers who need extra time to prepare their state individual income tax returns. For tax year 2025, the extended due date for state individual income tax returns is Nov. 16, 2026. Individual taxpayers who cannot file their returns by May 15 do not need to submit a request to obtain the automatic filing extension.

The automatic extension applies only to the filing of state income tax returns. It does not provide additional time to pay taxes due. Tax payments submitted after the May 15, 2026, deadline are subject to penalties and interest.

For more information about the automatic filing extension for state individual income tax returns, read Revenue Information Bulletin 23-012: Individual Income Tax Return Filing Extension.