Louisiana

Corporate income tax

Corporation income tax returns and payments are due on or before the 15th day of the fifth month after the close of the accounting period. Flat 5.5% rate for taxable years beginning on or after Jan 1, 2025 (Act 11 of 2024 3rd Extraordinary Session replaced the graduated brackets).

Extension. Automatic six-month extension to file if a federal extension was timely requested (to Nov 15 for calendar-year filers); extension to file is not an...

Partnerships and S corporations

Elective pass-through entity tax under R.S. 47:287.732.2 (LAC 61:I.1001): S corps and entities taxed as partnerships may elect to pay Louisiana income tax at the entity level; election made on Form R-6980 and the electing entity files Form CIFT-620 (electronic filing mandatory). A partnership that makes the election is not required to file Form IT-565. Composite partnership return (Schedule 6922) required for nonresident partners without a valid agreement unless the PTE election is made.

Sales and use tax

Due date. Return (Form R-1029) due on or before the 20th day of the month following the close of the calendar month or quarter reporting period.

Filing frequency. Monthly by default; LDR may approve quarterly filing on application.

Thresholds. Dealers whose sales tax liability averages less than $500 per month after filing six returns may apply to file quarterly.

Notes

Louisiana is unusual in using the 15th day of the FIFTH month (May 15) for corporate, partnership and S-corp returns. Franchise tax repeal confirmed on LDR's own FAQ page. The LDR partnership-tax landing pages returned 404; the IT-565 instructions (tax year 2022 edition) were used for the partnership due-date rule.