Mississippi business filing dates, 2027

State-level due dates for businesses filing in Mississippi. 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 .ics43 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
Pass-through entity return (84-105)calendar-year S corporation or partnership Source text “PTE returns are due on or before the 15th day of the 3rd month following the close of the taxable year. Mississippi will follow federal return filing and extended filing due dates.”verbatim · dor.ms.gov · retrieved 2026-09-23 “Taxpayers requesting an extension of time must remit the tax due with the proper Mississippi Application for Extension on or before the due date of the return to receive an automatic extension of time to file their tax returns. The authorized extension of time to file does not extend the time for payment of the income or franchise tax due. The federal extension will be accepted in lieu of the Mississippi extension if no tax liability exists on the due date of the return.”verbatim · dor.ms.gov · retrieved 2026-09-23	Applies toA pass-through entity's return is due the 15th day of the 3rd month after its taxable year closes. Remitting the tax with a Mississippi extension application by then extends filing, not payment.	Due ruleForm 84-105: 15th day of the 3rd month after the tax year ends	2027 dates Mar 15MonForm 84-105	Source · retrieveddor.ms.gov/business/business-tax-frequently-asked-questions (official source, opens in a new tab)retrieved 2026-09-23
Corporate income and franchise tax return (83-105)calendar-year C corporation Source text “The C Corporation income and franchise tax return is due on or before the 15th day of the 4th month following the close of the taxable year.”verbatim · dor.ms.gov · retrieved 2026-09-23 “Taxpayers requesting an extension of time must remit the tax due with the proper Mississippi Application for Extension on or before the due date of the return to receive an automatic extension of time to file their tax returns. The authorized extension of time to file does not extend the time for payment of the income or franchise tax due. The federal extension will be accepted in lieu of the Mississippi extension if no tax liability exists on the due date of the return.”verbatim · dor.ms.gov · retrieved 2026-09-23	Applies toA C corporation's income and franchise tax return is due the 15th day of the 4th month after its taxable year closes. Remitting the tax with a Mississippi extension application by then extends filing (not payment); a federal extension is accepted only if no tax is owed.	Due ruleForm 83-105: 15th day of the 4th month after the tax year ends	2027 dates Apr 15ThuForm 83-105	Source · retrieveddor.ms.gov/business/business-tax-frequently-asked-questions (official source, opens in a new tab)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 (80-106)Schedule C filer Source text “When are estimated tax payments due? April 15th, June 15th, September 15th, and January 15th.”verbatim · dor.ms.gov · retrieved 2026-09-23	Applies toAn individual (including a sole proprietor) required to pay Mississippi estimated tax pays by April 15, June 15, September 15 and January 15.	Due rule1st payment: April 15 of the year the calendar year begins; 2nd payment: June 15 of the year the calendar year begins; 3rd payment: September 15 of the year the calendar year begins; 4th payment: January 15 of the year after the calendar year begins	2027 dates Jan 15Fri4th payment Apr 15Thu1st payment Jun 15Tue2nd payment Sep 15Wed3rd payment	Source · retrieveddor.ms.gov/individual/individual-income-tax-frequently-asked-questions (official source, opens in a new tab)retrieved 2026-09-23
Corporate and PTE estimated tax requirement Source text “Yes, every corporation and pass-through-entity (PTE) with an annual income tax liability in excess of $200.00 is required to make estimated tax payments. Payments should be made separately for each entity.”verbatim · dor.ms.gov · retrieved 2026-09-23	Applies toEvery corporation and pass-through entity with annual income tax over $200 must make estimated tax payments, separately for each entity. The installment dates are not stated on this source, so none are shown.	Due ruleNo date: see the source text	2027 dates—	Source · retrieveddor.ms.gov/business/business-tax-frequently-asked-questions (official source, opens in a new tab)retrieved 2026-09-23

Withholding

16 dates · 1 not dated yet

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.

Why no dates: Drafted from Mississippi's official source; dates show once the rule has been independently checked against that source.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Withholding tax returnquarterly withholding filer Source text “Withholding returns are due the 15th day of the month following the period. If a due date falls on a Saturday, Sunday, or legal holiday, the due date will fall on the next business day. Withholding Tax returns are filed monthly or quarterly depending on the average amount of tax you withhold each month. You will be notified of your filing status. Generally, every employer with average liability of $300 or more per month must file a monthly tax return. Employers with smaller tax liabilities may file quarterly returns.”verbatim · dor.ms.gov · retrieved 2026-09-23	Applies toWithholding returns are due the 15th of the month after the period, monthly or quarterly as assigned (monthly generally at $300 or more a month). A Saturday, Sunday or legal-holiday date moves to the next business day.	Due ruleWithholding return: 15th day of the month after the quarter endsA date on a weekend moves to the next business day; state holidays are not compiled.	2027 dates Jan 15FriWithholding return Apr 15ThuWithholding return Jul 15ThuWithholding return Oct 15FriWithholding return State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.	Source · retrieveddor.ms.gov/business/business-tax-frequently-asked-questions (official source, opens in a new tab)retrieved 2026-09-23
Withholding tax returnmonthly withholding filer Source text “Withholding returns are due the 15th day of the month following the period. If a due date falls on a Saturday, Sunday, or legal holiday, the due date will fall on the next business day. Withholding Tax returns are filed monthly or quarterly depending on the average amount of tax you withhold each month. You will be notified of your filing status. Generally, every employer with average liability of $300 or more per month must file a monthly tax return. Employers with smaller tax liabilities may file quarterly returns.”verbatim · dor.ms.gov · retrieved 2026-09-23	Applies toWithholding returns are due the 15th of the month after the period, monthly or quarterly as assigned (monthly generally at $300 or more a month). A Saturday, Sunday or legal-holiday date moves to the next business day.	Due ruleWithholding return: 15th day of the month after the month endsA date on a weekend moves to the next business day; state holidays are not compiled.	2027 dates Jan 15FriWithholding return Feb 15MonWithholding return Mar 15MonWithholding return Apr 15ThuWithholding return May 17MonWithholding return · moved from Sat May 15 Jun 15TueWithholding return Jul 15ThuWithholding return Aug 16MonWithholding return · moved from Sun Aug 15 Sep 15WedWithholding return Oct 15FriWithholding return Nov 15MonWithholding return Dec 15WedWithholding return State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.	Source · retrieveddor.ms.gov/business/business-tax-frequently-asked-questions (official source, opens in a new tab)retrieved 2026-09-23
W-2 information filing	Applies toShown once verified	Due ruleUnsupported	2027 datesNot yet verified against its official source; no date is shown until it is.	Source · retrievedNo verified source on file

Withholding tax returnquarterly withholding filer

Source text

“Withholding returns are due the 15th day of the month following the period. If a due date falls on a Saturday, Sunday, or legal holiday, the due date will fall on the next business day. Withholding Tax returns are filed monthly or quarterly depending on the average amount of tax you withhold each month. You will be notified of your filing status. Generally, every employer with average liability of $300 or more per month must file a monthly tax return. Employers with smaller tax liabilities may file quarterly returns.”verbatim · dor.ms.gov · retrieved 2026-09-23

Applies toWithholding returns are due the 15th of the month after the period, monthly or quarterly as assigned (monthly generally at $300 or more a month). A Saturday, Sunday or legal-holiday date moves to the next business day.

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

2027 dates

Jan 15FriWithholding return
Apr 15ThuWithholding return
Jul 15ThuWithholding return
Oct 15FriWithholding return

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

Source · retrieveddor.ms.gov/business/business-tax-frequently-asked-questionsretrieved 2026-09-23

Withholding tax returnmonthly withholding filer

Source text

“Withholding returns are due the 15th day of the month following the period. If a due date falls on a Saturday, Sunday, or legal holiday, the due date will fall on the next business day. Withholding Tax returns are filed monthly or quarterly depending on the average amount of tax you withhold each month. You will be notified of your filing status. Generally, every employer with average liability of $300 or more per month must file a monthly tax return. Employers with smaller tax liabilities may file quarterly returns.”verbatim · dor.ms.gov · retrieved 2026-09-23

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

2027 dates

Jan 15FriWithholding return
Feb 15MonWithholding return
Mar 15MonWithholding return
Apr 15ThuWithholding return
May 17MonWithholding return · moved from Sat May 15
Jun 15TueWithholding return
Jul 15ThuWithholding return
Aug 16MonWithholding return · moved from Sun Aug 15
Sep 15WedWithholding return
Oct 15FriWithholding return
Nov 15MonWithholding return
Dec 15WedWithholding return

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

Source · retrieveddor.ms.gov/business/business-tax-frequently-asked-questionsretrieved 2026-09-23

W-2 information filing

Applies toShown once verified

Due ruleUnsupported

2027 datesNot yet verified against its official source; no date is shown until it is.

Source · retrievedNo verified source on file

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
Quarterly wage report and taxes Source text “Quarterly wage reports and taxes are due by the last day of the month following the close of each calendar quarter, unless the report date is a Saturday, Sunday, or a state or federal holiday. In that case you may file and pay on the following workday. 1st quarter----------due April 30th 2nd quarter ---------due July 31st 3rd quarter----------due October 31st 4th quarter----------due January 31st”verbatim · mdes.ms.gov · retrieved 2026-09-23	Applies toAn employer the preparer lists as a quarterly Mississippi unemployment-insurance filer (an MDES account) files quarterly wage reports and pays by the last day of the month after each quarter (April 30, July 31, October 31, January 31); a Saturday, Sunday or holiday date moves to the next workday. Payment-plan (MLPP) participants' later payment dates are not shown; the report date is.	Due ruleQuarterly wage report: last day of the month after the quarter endsA date on a weekend moves to the next business day; state holidays are not compiled.	2027 dates Feb 1MonQuarterly wage report · moved from Sun Jan 31 Apr 30FriQuarterly wage report Aug 2MonQuarterly wage report · moved from Sat Jul 31 Nov 1MonQuarterly wage report · moved from Sun Oct 31 State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.	Source · retrievedmdes.ms.gov/employer-faqs/ (official source, opens in a new tab)retrieved 2026-09-23

Quarterly wage report and taxes

Source text

“Quarterly wage reports and taxes are due by the last day of the month following the close of each calendar quarter, unless the report date is a Saturday, Sunday, or a state or federal holiday. In that case you may file and pay on the following workday. 1st quarter----------due April 30th 2nd quarter ---------due July 31st 3rd quarter----------due October 31st 4th quarter----------due January 31st”verbatim · mdes.ms.gov · retrieved 2026-09-23

Applies toAn employer the preparer lists as a quarterly Mississippi unemployment-insurance filer (an MDES account) files quarterly wage reports and pays by the last day of the month after each quarter (April 30, July 31, October 31, January 31); a Saturday, Sunday or holiday date moves to the next workday. Payment-plan (MLPP) participants' later payment dates are not shown; the report date is.

Due ruleQuarterly wage report: last day of the month after the quarter endsA date on a weekend moves to the next business day; state holidays are not compiled.

2027 dates

Feb 1MonQuarterly wage report · moved from Sun Jan 31
Apr 30FriQuarterly wage report
Aug 2MonQuarterly wage report · moved from Sat Jul 31
Nov 1MonQuarterly wage report · moved from Sun Oct 31

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

Source · retrievedmdes.ms.gov/employer-faqs/retrieved 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
Sales tax returnquarterly filer Source text “Sales tax returns are due the 20th day of the month following the reporting period. If a due date falls on a weekend or holiday, the due date becomes the next business day.”verbatim · dor.ms.gov · retrieved 2026-09-23 “Generally, every retailer with average liability of $300 or more per month must file a monthly tax return. Retailers with smaller tax liabilities may file quarterly.”verbatim · dor.ms.gov · retrieved 2026-09-23 “No. The Commissioner of Revenue is authorized to provide an extension of time to file the return for good cause, as example when a natural disaster creates a hardship for filing the return on time. In these cases, the tax remains due and interest may apply for late payment.”verbatim · dor.ms.gov · retrieved 2026-09-23	Applies toSales tax returns are due the 20th of the month after the reporting period (monthly generally at $300 or more a month, otherwise quarterly); a weekend or holiday date moves to the next business day. Extensions are generally not available; the Commissioner may extend the time to file for good cause (for example a natural disaster), but the tax remains due.	Due ruleSales tax return: 20th day of the month after the quarter endsA date on a weekend moves to the next business day; state holidays are not compiled.	2027 dates Jan 20WedSales tax return Apr 20TueSales tax return Jul 20TueSales tax return Oct 20WedSales tax return State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.	Source · retrieveddor.ms.gov/business/business-tax-frequently-asked-questions (official source, opens in a new tab)retrieved 2026-09-23
Sales tax returnmonthly filer Source text “Sales tax returns are due the 20th day of the month following the reporting period. If a due date falls on a weekend or holiday, the due date becomes the next business day.”verbatim · dor.ms.gov · retrieved 2026-09-23 “Generally, every retailer with average liability of $300 or more per month must file a monthly tax return. Retailers with smaller tax liabilities may file quarterly.”verbatim · dor.ms.gov · retrieved 2026-09-23 “No. The Commissioner of Revenue is authorized to provide an extension of time to file the return for good cause, as example when a natural disaster creates a hardship for filing the return on time. In these cases, the tax remains due and interest may apply for late payment.”verbatim · dor.ms.gov · retrieved 2026-09-23	Applies toSales tax returns are due the 20th of the month after the reporting period (monthly generally at $300 or more a month, otherwise quarterly); a weekend or holiday date moves to the next business day. Extensions are generally not available; the Commissioner may extend the time to file for good cause (for example a natural disaster), but the tax remains due.	Due ruleSales tax return: 20th day of the month after the month endsA date on a weekend moves to the next business day; state holidays are not compiled.	2027 dates Jan 20WedSales tax return Feb 22MonSales tax return · moved from Sat Feb 20 Mar 22MonSales tax return · moved from Sat Mar 20 Apr 20TueSales tax return May 20ThuSales tax return Jun 21MonSales tax return · moved from Sun Jun 20 Jul 20TueSales tax return Aug 20FriSales tax return Sep 20MonSales tax return Oct 20WedSales tax return Nov 22MonSales tax return · moved from Sat Nov 20 Dec 20MonSales tax return State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.	Source · retrieveddor.ms.gov/business/business-tax-frequently-asked-questions (official source, opens in a new tab)retrieved 2026-09-23

Sales tax returnquarterly filer

Source text

“Sales tax returns are due the 20th day of the month following the reporting period. If a due date falls on a weekend or holiday, the due date becomes the next business day.”verbatim · dor.ms.gov · retrieved 2026-09-23

“Generally, every retailer with average liability of $300 or more per month must file a monthly tax return. Retailers with smaller tax liabilities may file quarterly.”verbatim · dor.ms.gov · retrieved 2026-09-23

“No. The Commissioner of Revenue is authorized to provide an extension of time to file the return for good cause, as example when a natural disaster creates a hardship for filing the return on time. In these cases, the tax remains due and interest may apply for late payment.”verbatim · dor.ms.gov · retrieved 2026-09-23

Applies toSales tax returns are due the 20th of the month after the reporting period (monthly generally at $300 or more a month, otherwise quarterly); a weekend or holiday date moves to the next business day. Extensions are generally not available; the Commissioner may extend the time to file for good cause (for example a natural disaster), but the tax remains due.

Due ruleSales tax return: 20th day of the month after the quarter endsA date on a weekend moves to the next business day; state holidays are not compiled.

2027 dates

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

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

Source · retrieveddor.ms.gov/business/business-tax-frequently-asked-questionsretrieved 2026-09-23

Sales tax returnmonthly filer

Source text

“Sales tax returns are due the 20th day of the month following the reporting period. If a due date falls on a weekend or holiday, the due date becomes the next business day.”verbatim · dor.ms.gov · retrieved 2026-09-23

“Generally, every retailer with average liability of $300 or more per month must file a monthly tax return. Retailers with smaller tax liabilities may file quarterly.”verbatim · dor.ms.gov · retrieved 2026-09-23

“No. The Commissioner of Revenue is authorized to provide an extension of time to file the return for good cause, as example when a natural disaster creates a hardship for filing the return on time. In these cases, the tax remains due and interest may apply for late payment.”verbatim · dor.ms.gov · retrieved 2026-09-23

Due ruleSales tax return: 20th day of the month after the month endsA date on a weekend moves to the next business day; state holidays are not compiled.

2027 dates

Jan 20WedSales tax return
Feb 22MonSales tax return · moved from Sat Feb 20
Mar 22MonSales tax return · moved from Sat Mar 20
Apr 20TueSales tax return
May 20ThuSales tax return
Jun 21MonSales tax return · moved from Sun Jun 20
Jul 20TueSales tax return
Aug 20FriSales tax return
Sep 20MonSales tax return
Oct 20WedSales tax return
Nov 22MonSales tax return · moved from Sat Nov 20
Dec 20MonSales tax return

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

Source · retrieveddor.ms.gov/business/business-tax-frequently-asked-questionsretrieved 2026-09-23

Annual report

1 date

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.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Secretary of State annual reportsingle-member LLC, multi-member LLC or corporation Source text “The Annual Report for profit corporations and limited liability companies can be filed any time on or after January 1st of each year and are due by April 15th of that year.”verbatim · sos.ms.gov · retrieved 2026-09-23	Applies toA profit corporation (the preparer attests it is not a nonprofit) or LLC the preparer attests is operating in, and registered with, Mississippi files its annual report between January 1 and April 15 each year. Nonprofit corporations (May 15) are not covered. The source states no weekend rule, so the stated date is shown.	Due ruleAnnual report: April 15 of the year the calendar year ends	2027 dates Apr 15ThuAnnual report	Source · retrievedsos.ms.gov/business-services/annual-reports (official source, opens in a new tab)retrieved 2026-09-23

Information returns

Unsupported

Forms reporting payments to others — W-2s to employees, 1099s to contractors — furnished to the recipients and filed with the agency.

Why no dates: Not yet verified against its official source; no date is shown until it is.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
1099 information filing (89-140)	Applies toShown once verified	Due ruleUnsupported	2027 datesNot yet verified against its official source; no date is shown until it is.	Source · retrievedNo verified source on file

Due-date rules

no fixed date

The conventions other lines cite: how a date on a weekend or holiday moves, and how a disaster declaration postpones deadlines.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Weekend and holiday due dates Source text “If a due date falls on a weekend or holiday, the due date becomes the next business day.”verbatim · dor.ms.gov · retrieved 2026-09-23	Applies toA Mississippi sales tax due date on a weekend or holiday becomes the next business day.	Due ruleNo date: see the source text	2027 dates—	Source · retrieveddor.ms.gov/business/business-tax-frequently-asked-questions (official source, opens in a new tab)retrieved 2026-09-23

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.

Tracking these for a list of clients? FilingDates builds each client’s calendar from the same rules, with every date linked to its source.