Mississippi: corporate income tax, a franchise (privilege) tax and an annual report due by April 15.
Each fact below cites the agency page we read and the day we read it. Where a rule is still being confirmed, the page says so instead of showing a zero.
Verified facts
Corporate income tax
Yes
0% on the first $5,000 of taxable income; 4% on the next $5,000; 5% on taxable income over $10,000
Franchise or privilege
Yes
A franchise tax is imposed on corporations for the privilege of doing business in Mississippi, computed on capital employed in excess of $100,000 (or assessed property value, whichever is greater): $0.75 per $1,000 for tax years beginning in 2025, $0.50 per $1,000 for 2026, and $0.25 per $1,000 for…
Entity annual report
Yes
annual · Due by April 15 each year; may be filed any time on or after January 1
Return due date
Published rule
15th day of the 4th month following the close of the taxable year (April 15 for calendar-year filers)
Extension
Available
Tax due must be remitted with the Mississippi Application for Extension (Form 83-180) on or before the due date of the return to receive an automatic extension. A federal extension is accepted in lieu of the Mississippi extension if no tax liability exists on…
Zero activity / minimum tax
No minimum corporate income tax: the Department states Mississippi does not have a minimum corporate income tax. The franchise tax has a $25 minimum and is due annually as long as the corporation…
The $25 figure is the minimum franchise tax, not a minimum income tax; both are reported on the same corporate return.
Long-form guide in professional review
Dates, extensions and payments
Filing and payment dates stay separate wherever the source supports it.
- Filing
Return filing
15th day of the 4th month following the close of the taxable year (April 15 for calendar-year filers)
15th day of the 4th month following the close of the fiscal year; Mississippi follows federal return and extended filing due dates
- Payment
Tax payment
Separate dateTax must be remitted on or before the original due date; an extension of time to file does not extend the time for payment of income or franchise tax.
The payment date is separate from the filing date
- Extension
Extension
Does not extend paymentTax due must be remitted with the Mississippi Application for Extension (Form 83-180) on or before the due date of the return to receive an automatic extension. A federal extension is accepted in lieu of the Mississippi extension if no tax liability exists on…
Automatic
- Entity report
Entity report
annualDue by April 15 each year; may be filed any time on or after January 1
All for-profit corporations must file; failure to file may result in administrative dissolution. Reports must be filed online. Nonprofit annual reports are due May 15. The filing fee was not stated on the retrieved page.
Email me the Mississippi guide
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Frequently asked questions
Does Mississippi impose a corporate income tax?
Yes. 0% on the first $5,000 of taxable income; 4% on the next $5,000; 5% on taxable income over $10,000 Form: Form 83-100 series corporate income and franchise tax return.
Does Mississippi charge a franchise or privilege tax?
Yes. Check the fact chip and the linked official source before budgeting for it.
When is the Mississippi corporate return due?
15th day of the 4th month following the close of the taxable year (April 15 for calendar-year filers)
Does an extension also postpone the tax payment?
No. The extension moves the filing date, not the payment date; unpaid tax can accrue penalty and interest.
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