Louisiana business filing dates, 2027

State-level due dates for businesses filing in Louisiana. Every line links to the official page it came from, with the date that page was read. Where no official source has been verified, the line says so instead of showing a date.

Add to Google Calendar Add to Apple or Outlook Download .ics27 dated lines in the calendar file · sources last read 2026-09-23

Income / franchise tax return

2 dates

The annual return for the business’s tax year, and in franchise-tax states the report that keeps the entity in good standing. Which form and which date depend on the entity type and the tax year. Where the source grants an extension, it extends the time to file; the source says whether it also extends the time to pay.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Form CIFT-620 corporation income tax returncalendar-year C corporation Source text “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. For calendar-year filers, the due date is May 15.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23 “Louisiana allows an automatic six-month extension to file the corporation income tax return if a federal extension was timely requested. An extension to file is not an extension to pay.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23 “A Louisiana Corporation Income Tax return is generally required for: Corporations earning income from Louisiana sources”verbatim · revenue.louisiana.gov · retrieved 2026-09-23	Applies toA C corporation the preparer attests earns income from Louisiana sources: the return and payment are due the 15th day of the 5th month after its accounting period closes (May 15 for calendar-year filers). A timely federal extension gives an automatic six-month extension to file, not to pay. The source states no weekend rule, so the stated date is shown.	Due ruleCIFT-620: 15th day of the 5th month after the tax year ends	2027 dates May 15SatCIFT-620extended (Federal extension): Nov 15 Falls on a Saturday; the source states no weekend rule.	Source · retrievedrevenue.louisiana.gov/businesses/widely-used-tax-types/corporate-income-franchise-tax/ (official source, opens in a new tab)retrieved 2026-09-23
Partnership composite return (nonresident partners)calendar-year partnership Source text “Returns and payments are due on or before May 15th of the following year. For fiscal year taxpayers, returns and payments are due on the 15th day of the fifth month after the close of the fiscal year. If the due date falls on a weekend or legal holiday, the return is due on the next business day.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23 “Partnerships engaging in activities in Louisiana that have nonresident partners are required to file a composite partnership return unless:”verbatim · revenue.louisiana.gov · retrieved 2026-09-23 “All nonresident partners are corporations, partnerships or tax exempt trusts; or”verbatim · revenue.louisiana.gov · retrieved 2026-09-23 “All nonresident individual partners have a valid agreement on file with the Department of Revenue.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23	Applies toA partnership the preparer attests must file a Louisiana composite return (it has nonresident partners, not all of them corporations, partnerships or tax-exempt trusts, and not every nonresident individual partner has an agreement on file) files and pays by May 15 of the following year (fiscal years: the 15th day of the 5th month after the year closes). A weekend or legal-holiday date moves to the next business day.	Due ruleComposite return: 15th day of the 5th month after the tax year endsA date on a weekend moves to the next business day; state holidays are not compiled.	2027 dates May 17MonComposite return · moved from Sat May 15 State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.	Source · retrievedrevenue.louisiana.gov/businesses/widely-used-tax-types/partnership-tax/ (official source, opens in a new tab)retrieved 2026-09-23
Corporation franchise tax repealed Source text “The Louisiana corporation franchise tax has been repealed for franchise tax periods beginning on or after January 1, 2026. Corporations may still have filing obligations for prior franchise tax periods.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23	Applies toLouisiana's corporation franchise tax is repealed for franchise tax periods beginning on or after January 1, 2026; earlier periods may still need returns.	Due ruleNo date: see the source text	2027 dates—	Source · retrievedrevenue.louisiana.gov/businesses/widely-used-tax-types/corporate-income-franchise-tax/ (official source, opens in a new tab)retrieved 2026-09-23

Form CIFT-620 corporation income tax returncalendar-year C corporation

Source text

“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. For calendar-year filers, the due date is May 15.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

“Louisiana allows an automatic six-month extension to file the corporation income tax return if a federal extension was timely requested. An extension to file is not an extension to pay.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

“A Louisiana Corporation Income Tax return is generally required for: Corporations earning income from Louisiana sources”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

Applies toA C corporation the preparer attests earns income from Louisiana sources: the return and payment are due the 15th day of the 5th month after its accounting period closes (May 15 for calendar-year filers). A timely federal extension gives an automatic six-month extension to file, not to pay. The source states no weekend rule, so the stated date is shown.

Due ruleCIFT-620: 15th day of the 5th month after the tax year ends

2027 dates

May 15SatCIFT-620extended (Federal extension): Nov 15

Falls on a Saturday; the source states no weekend rule.

Source · retrievedrevenue.louisiana.gov/businesses/widely-used-tax-types/corporate-income-franchise-tax/retrieved 2026-09-23

Partnership composite return (nonresident partners)calendar-year partnership

Source text

“Returns and payments are due on or before May 15th of the following year. For fiscal year taxpayers, returns and payments are due on the 15th day of the fifth month after the close of the fiscal year. If the due date falls on a weekend or legal holiday, the return is due on the next business day.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

“Partnerships engaging in activities in Louisiana that have nonresident partners are required to file a composite partnership return unless:”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

“All nonresident partners are corporations, partnerships or tax exempt trusts; or”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

“All nonresident individual partners have a valid agreement on file with the Department of Revenue.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

Applies toA partnership the preparer attests must file a Louisiana composite return (it has nonresident partners, not all of them corporations, partnerships or tax-exempt trusts, and not every nonresident individual partner has an agreement on file) files and pays by May 15 of the following year (fiscal years: the 15th day of the 5th month after the year closes). A weekend or legal-holiday date moves to the next business day.

Due ruleComposite return: 15th day of the 5th month after the tax year endsA date on a weekend moves to the next business day; state holidays are not compiled.

2027 dates

May 17MonComposite return · moved from Sat May 15

State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.

Source · retrievedrevenue.louisiana.gov/businesses/widely-used-tax-types/partnership-tax/retrieved 2026-09-23

Corporation franchise tax repealed

Source text

“The Louisiana corporation franchise tax has been repealed for franchise tax periods beginning on or after January 1, 2026. Corporations may still have filing obligations for prior franchise tax periods.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

Applies toLouisiana's corporation franchise tax is repealed for franchise tax periods beginning on or after January 1, 2026; earlier periods may still need returns.

Due ruleNo date: see the source text

2027 dates—

Source · retrievedrevenue.louisiana.gov/businesses/widely-used-tax-types/corporate-income-franchise-tax/retrieved 2026-09-23

Estimated tax

4 dates

Installments paid during the year toward the year’s tax. Whether a business must pay them depends on its expected liability, which this page cannot know; the lines show when installments fall due for those who must.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Individual estimated tax (IT-540ES)Schedule C filer Source text “Calendar year taxpayers can pay the estimated tax in full with the declaration, or in equal installments, on or before April 15th, June 15th, September 15th, and January 15th.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23	Applies toA calendar-year individual (including a sole proprietor) required to declare Louisiana estimated tax pays in full with the declaration or in installments by April 15, June 15, September 15 and January 15. The source states no weekend rule, so the stated date is shown.	Due rule1st installment: April 15 of the year the calendar year begins; 2nd installment: June 15 of the year the calendar year begins; 3rd installment: September 15 of the year the calendar year begins; 4th installment: January 15 of the year after the calendar year begins	2027 dates Jan 15Fri4th installment Apr 15Thu1st installment Jun 15Tue2nd installment Sep 15Wed3rd installment	Source · retrievedrevenue.louisiana.gov/individuals/general-resources/declaration-of-estimated-income-taxes/ (official source, opens in a new tab)retrieved 2026-09-23
Corporation estimated tax Source text “Corporations must make estimated income tax payments if the corporation’s income tax liability, after credits, can reasonably be expected to be $1,000 or more for the taxable year.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23	Applies toA corporation whose income tax after credits can reasonably be expected to be $1,000 or more makes estimated payments. The installment dates are not stated on this source, so none are shown.	Due ruleNo date: see the source text	2027 dates—	Source · retrievedrevenue.louisiana.gov/businesses/widely-used-tax-types/corporate-income-franchise-tax/ (official source, opens in a new tab)retrieved 2026-09-23

Withholding

1 date

Returns and deposits of income tax withheld from employees’ wages. The agency assigns each employer a deposit frequency, usually from its past liability, so the dates differ by frequency.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Annual withholding reconciliation (L-3) Source text “The annual reconciliation is due: January 31 following the close of the calendar year; or 30 days after final wages are paid if the business closes during the year.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23 “Note: The annual reconciliation is designated by the Department as Form L-3”verbatim · revenue.louisiana.gov · retrieved 2026-09-23	Applies toAn employer the preparer attests withholds Louisiana income tax files the annual withholding reconciliation (Form L-3) by January 31 after the calendar year, or within 30 days after final wages if the business closes (not dated here). The source states no weekend rule, so the stated date is shown.	Due ruleForm L-3: January 31 of the year after the calendar year ends	2027 dates Jan 31SunForm L-3 Falls on a Sunday; the source states no weekend rule.	Source · retrievedrevenue.louisiana.gov/businesses/widely-used-tax-types/withholding/ (official source, opens in a new tab)retrieved 2026-09-23
Withholding payment frequency Source text “Quarterly \| Less than $500”verbatim · revenue.louisiana.gov · retrieved 2026-09-23 “Monthly \| $500 to less than $5,000”verbatim · revenue.louisiana.gov · retrieved 2026-09-23 “Semi-monthly \| $5,000 or more”verbatim · revenue.louisiana.gov · retrieved 2026-09-23	Applies toFor an employer the preparer attests withholds (or must withhold) Louisiana income tax: payment frequency follows average monthly Louisiana withholding — quarterly under $500; monthly $500 to under $5,000; semi-monthly $5,000 or more. Shown as information; no date is generated.	Due ruleNo date: see the source text	2027 dates—	Source · retrievedrevenue.louisiana.gov/businesses/widely-used-tax-types/withholding/ (official source, opens in a new tab)retrieved 2026-09-23

Annual withholding reconciliation (L-3)

Source text

“The annual reconciliation is due: January 31 following the close of the calendar year; or 30 days after final wages are paid if the business closes during the year.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

“Note: The annual reconciliation is designated by the Department as Form L-3”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

Applies toAn employer the preparer attests withholds Louisiana income tax files the annual withholding reconciliation (Form L-3) by January 31 after the calendar year, or within 30 days after final wages if the business closes (not dated here). The source states no weekend rule, so the stated date is shown.

Due ruleForm L-3: January 31 of the year after the calendar year ends

2027 dates

Jan 31SunForm L-3

Falls on a Sunday; the source states no weekend rule.

Source · retrievedrevenue.louisiana.gov/businesses/widely-used-tax-types/withholding/retrieved 2026-09-23

Withholding payment frequency

Source text

“Quarterly | Less than $500”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

“Monthly | $500 to less than $5,000”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

“Semi-monthly | $5,000 or more”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

Applies toFor an employer the preparer attests withholds (or must withhold) Louisiana income tax: payment frequency follows average monthly Louisiana withholding — quarterly under $500; monthly $500 to under $5,000; semi-monthly $5,000 or more. Shown as information; no date is generated.

Due ruleNo date: see the source text

2027 dates—

Source · retrievedrevenue.louisiana.gov/businesses/widely-used-tax-types/withholding/retrieved 2026-09-23

Unemployment insurance

4 dates

Employer contribution and wage reports for unemployment insurance: the state program, and FUTA at the federal level.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Employer's Quarterly Wage and Tax Report Source text “Liable businesses are required to file an Employer’s Quarterly Wage & Tax Report online at https://www.laworks.net/LaWatsEmployer/, and remit any tax due no later than the last day of the month (April 30, July 31, Oct. 31, Jan. 31) following the close of the calendar quarter which the report covers.”verbatim · laworks.net · retrieved 2026-09-23	Applies toAn employer the preparer lists as a quarterly Louisiana unemployment-insurance filer (a liable business) files the quarterly wage and tax report and pays by the last day of the month after the quarter (April 30, July 31, October 31, January 31). The source states no weekend rule, so the stated date is shown.	Due ruleQuarterly wage and tax report: last day of the month after the quarter ends	2027 dates Jan 31Sun†Quarterly wage and tax report Apr 30FriQuarterly wage and tax report Jul 31Sat†Quarterly wage and tax report Oct 31Sun†Quarterly wage and tax report † Falls on a Sunday; the source states no weekend rule. Falls on a Saturday; the source states no weekend rule.	Source · retrievedlaworks.net/Downloads/UI/WTS/UI_EmployerTaxGuidelines.pdf (official source, opens in a new tab)retrieved 2026-09-23

Employer's Quarterly Wage and Tax Report

Source text

“Liable businesses are required to file an Employer’s Quarterly Wage & Tax Report online at https://www.laworks.net/LaWatsEmployer/, and remit any tax due no later than the last day of the month (April 30, July 31, Oct. 31, Jan. 31) following the close of the calendar quarter which the report covers.”verbatim · laworks.net · retrieved 2026-09-23

Applies toAn employer the preparer lists as a quarterly Louisiana unemployment-insurance filer (a liable business) files the quarterly wage and tax report and pays by the last day of the month after the quarter (April 30, July 31, October 31, January 31). The source states no weekend rule, so the stated date is shown.

Due ruleQuarterly wage and tax report: last day of the month after the quarter ends

2027 dates

Jan 31Sun†Quarterly wage and tax report
Apr 30FriQuarterly wage and tax report
Jul 31Sat†Quarterly wage and tax report
Oct 31Sun†Quarterly wage and tax report

† Falls on a Sunday; the source states no weekend rule. Falls on a Saturday; the source states no weekend rule.

Source · retrievedlaworks.net/Downloads/UI/WTS/UI_EmployerTaxGuidelines.pdfretrieved 2026-09-23

Sales and use tax

16 dates

Returns for sales and use tax collected under a permit. The agency assigns each permit holder a filing frequency; the dates differ by frequency.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
State sales and use tax returnquarterly filer Source text “Sales tax returns and tax payments are due on or before the 20th of the month following the close of the calendar month or calendar quarter of the reporting period.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23	Applies toState sales tax returns and payments are due by the 20th of the month after the calendar month or calendar quarter reported. Parish and local sales taxes are not covered.	Due ruleSales tax return: 20th day of the month after the quarter ends	2027 dates Jan 20WedSales tax return Apr 20TueSales tax return Jul 20TueSales tax return Oct 20WedSales tax return	Source · retrievedrevenue.louisiana.gov/businesses/general-sales-and-use-taxes/general-sales-use-tax/ (official source, opens in a new tab)retrieved 2026-09-23
State sales and use tax returnmonthly filer Source text “Sales tax returns and tax payments are due on or before the 20th of the month following the close of the calendar month or calendar quarter of the reporting period.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23	Applies toState sales tax returns and payments are due by the 20th of the month after the calendar month or calendar quarter reported. Parish and local sales taxes are not covered.	Due ruleSales tax return: 20th day of the month after the month ends	2027 dates Jan 20WedSales tax return Feb 20Sat†Sales tax return Mar 20Sat†Sales tax return Apr 20TueSales tax return May 20ThuSales tax return Jun 20Sun†Sales tax return Jul 20TueSales tax return Aug 20FriSales tax return Sep 20MonSales tax return Oct 20WedSales tax return Nov 20Sat†Sales tax return Dec 20MonSales tax return † Falls on a Saturday; the source states no weekend rule. Falls on a Sunday; the source states no weekend rule.	Source · retrievedrevenue.louisiana.gov/businesses/general-sales-and-use-taxes/general-sales-use-tax/ (official source, opens in a new tab)retrieved 2026-09-23

State sales and use tax returnquarterly filer

Source text

“Sales tax returns and tax payments are due on or before the 20th of the month following the close of the calendar month or calendar quarter of the reporting period.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

Applies toState sales tax returns and payments are due by the 20th of the month after the calendar month or calendar quarter reported. Parish and local sales taxes are not covered.

Due ruleSales tax return: 20th day of the month after the quarter ends

2027 dates

Jan 20WedSales tax return
Apr 20TueSales tax return
Jul 20TueSales tax return
Oct 20WedSales tax return

Source · retrievedrevenue.louisiana.gov/businesses/general-sales-and-use-taxes/general-sales-use-tax/retrieved 2026-09-23

State sales and use tax returnmonthly filer

Source text

“Sales tax returns and tax payments are due on or before the 20th of the month following the close of the calendar month or calendar quarter of the reporting period.”verbatim · revenue.louisiana.gov · retrieved 2026-09-23

Applies toState sales tax returns and payments are due by the 20th of the month after the calendar month or calendar quarter reported. Parish and local sales taxes are not covered.

Due ruleSales tax return: 20th day of the month after the month ends

2027 dates

Jan 20WedSales tax return
Feb 20Sat†Sales tax return
Mar 20Sat†Sales tax return
Apr 20TueSales tax return
May 20ThuSales tax return
Jun 20Sun†Sales tax return
Jul 20TueSales tax return
Aug 20FriSales tax return
Sep 20MonSales tax return
Oct 20WedSales tax return
Nov 20Sat†Sales tax return
Dec 20MonSales tax return

† Falls on a Saturday; the source states no weekend rule. Falls on a Sunday; the source states no weekend rule.

Source · retrievedrevenue.louisiana.gov/businesses/general-sales-and-use-taxes/general-sales-use-tax/retrieved 2026-09-23

Annual report

Unsupported

The annual or biennial report an entity files with the Secretary of State (or its equivalent) to stay in good standing. Some are keyed to the month the entity was formed.

Why no dates: No official source confirmed yet for Louisiana's annual report due date.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Annual report	Applies toShown once verified	Due ruleUnsupported	2027 datesNo official source confirmed yet for Louisiana's annual report due date.	Source · retrievedNo verified source on file

Dates are computed from the linked pages as they read on each retrieval date. Agencies change their pages, and the IRS postpones deadlines after disasters; confirm with the source before filing.

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