Mississippi business filing due dates

The Mississippi deadlines Ordexly tracks for Oct 2026 to Oct 2027. Every date links to the agency page it was checked against (last checked Oct 14, 2026). Which ones apply to a business depends on its registrations and filing frequency, so confirm with the agency.

Annual reports & franchise tax

Due	Deadline	Source
Thu, Apr 15, 2027	Mississippi Annual Report 2027	official source

Sales & use tax

Due	Deadline	Source
Fri, Nov 20, 2026	Mississippi sales tax return (monthly) Oct 2026	official source
Mon, Dec 21, 2026	Mississippi sales tax return (monthly) Nov 2026 Moved from Sun, Dec 20 (weekend).	official source
Wed, Jan 20, 2027	Mississippi sales tax return (monthly) Dec 2026	official source
Wed, Jan 20, 2027	Mississippi sales tax return (quarterly) Q4 2026	official source
Mon, Feb 22, 2027	Mississippi sales tax return (monthly) Jan 2027 Moved from Sat, Feb 20 (weekend).	official source
Mon, Mar 22, 2027	Mississippi sales tax return (monthly) Feb 2027 Moved from Sat, Mar 20 (weekend).	official source
Tue, Apr 20, 2027	Mississippi sales tax return (monthly) Mar 2027	official source
Tue, Apr 20, 2027	Mississippi sales tax return (quarterly) Q1 2027	official source
Thu, May 20, 2027	Mississippi sales tax return (monthly) Apr 2027	official source
Mon, Jun 21, 2027	Mississippi sales tax return (monthly) May 2027 Moved from Sun, Jun 20 (weekend).	official source
Tue, Jul 20, 2027	Mississippi sales tax return (monthly) Jun 2027	official source
Tue, Jul 20, 2027	Mississippi sales tax return (quarterly) Q2 2027	official source
Fri, Aug 20, 2027	Mississippi sales tax return (monthly) Jul 2027	official source
Mon, Sep 20, 2027	Mississippi sales tax return (monthly) Aug 2027	official source
Wed, Oct 20, 2027	Mississippi sales tax return (monthly) Sep 2027	official source
Wed, Oct 20, 2027	Mississippi sales tax return (quarterly) Q3 2027	official source

Payroll & withholding

Due	Deadline	Source
Fri, Jan 15, 2027	Mississippi Withholding withholding return (quarterly) Q4 2026	official source
Thu, Apr 15, 2027	Mississippi Withholding withholding return (quarterly) Q1 2027	official source
Thu, Jul 15, 2027	Mississippi Withholding withholding return (quarterly) Q2 2027	official source
Fri, Oct 15, 2027	Mississippi Withholding withholding return (quarterly) Q3 2027	official source

Unemployment / reemployment

Due	Deadline	Source
Mon, Nov 2, 2026	Mississippi UI-2/3 quarterly wage and contribution report (quarterly) Q3 2026	official source
Mon, Feb 1, 2027	Mississippi UI-2/3 quarterly wage and contribution report (quarterly) Q4 2026	official source
Fri, Apr 30, 2027	Mississippi UI-2/3 quarterly wage and contribution report (quarterly) Q1 2027	official source
Mon, Aug 2, 2027	Mississippi UI-2/3 quarterly wage and contribution report (quarterly) Q2 2027	official source

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Nearby: Alabama due dates · Arkansas due dates · Louisiana due dates · Tennessee due dates

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Federal due dates · All states · Mississippi coverage details