Louisiana tax deadlines in 2025: filing dates and estimated payments
Deadlines that fall in calendar 2025: the 2024 return and the 2025 estimated payments. Different year? See Louisiana 2026 →
Louisiana deadlines in 2025
| 2024 individual return due | May 15, 2025 |
|---|---|
| Extended filing deadline | November 15, 2025 |
| Payment due | May 15, 2025, extension or not |
| Final 2024 estimated payment | January 15, 2025 |
| 2025 estimated payments | April 15, 2025 · June 15, 2025 · September 15, 2025 · January 15, 2026 |
Individual returns are due May 15 (not April 15). Automatic 6-month extension to November 15; payment still due May 15. Estimated installments follow the standard quarterly dates.
Louisiana estimated tax payments in 2025
Louisiana estimated payments for the 2025 tax year follow the standard schedule: April 15, 2025, June 15, 2025, September 15, 2025, January 15, 2026. Confirm the current-year voucher and any state-specific threshold with the Louisiana tax agency.
Source: revenue.louisiana.gov.
Louisiana extensions
An extension moves the Louisiana filing deadline to November 15, 2025. It does not move the payment date: pay what you expect to owe by May 15, 2025. Confirm with the Louisiana tax agency whether the federal extension is honored automatically or a state form is required.
Federal deadlines in 2025
| 2024 Form 1040 | April 15, 2025 · extension October 15, 2025 |
|---|---|
| 2024 S-corp (1120-S) & partnership (1065) | March 17, 2025 |
| 2024 C-corp (Form 1120) | April 15, 2025 |
| 2025 federal estimated payments (1040-ES) | April 15, 2025 · June 16, 2025 · September 15, 2025 · January 15, 2026 |
Source: IRS Publication 509 and Form 1040-ES instructions, irs.gov.
Frequently asked questions
When are Louisiana state taxes due in 2025?
Your 2024 Louisiana individual income tax return is due May 15, 2025. If that date falls on a weekend or legal holiday, the deadline moves to the next business day. An extension moves the filing deadline to November 15, 2025, but any tax owed is still due on the original date.
When are Louisiana estimated tax payments due in 2025?
Louisiana estimated payments for the 2025 tax year are due April 15, 2025, June 15, 2025, September 15, 2025, January 15, 2026. The final installment for 2024 was due January 15, 2025.
Does Louisiana accept the federal extension?
An extension moves the Louisiana filing deadline to November 15, 2025. It does not extend the time to pay: pay what you expect to owe by May 15, 2025 to avoid penalties and interest.
Does a Louisiana extension give me more time to pay?
No. An extension extends the time to file, not to pay. To avoid penalties and interest, pay what you expect to owe by May 15, 2025.
Dates are the statutory deadlines that fall in 2025 and move to the next business day when they land on a weekend or holiday. Each section links to the source it was checked against. Always confirm with the Louisiana tax agency or the IRS before relying on a date. This is general information, not tax advice.