Louisiana state income tax filing extensions must be requested before the May 15 filing deadline  

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BATON ROUGE – Louisiana taxpayers who need more time to file their state individual income taxes must request extensions before the May 15, 2018, filing deadline to avoid late-filing penalties.   An extension provides more time to prepare and file a Louisiana individual income tax return. It does not grant additional time to pay any taxes due. Tax payments received after the return due date are subject to interest and late-payment penalties.   Visit www.revenue.louisiana.gov/extensions to submit an extension request electronically.