Mississippi Small Business Taxes in 2026: Rates, Deadlines, and Filing Steps

Mississippi business owners need a clear system for tracking state tax obligations. Depending on your entity type and whether you have employees or sales tax exposure, you may deal with corporate income tax, franchise tax, sales and use tax, withholding tax, and unemployment tax. The right approach is not to guess which taxes apply. It is to identify your entity classification, register for the correct accounts, and calendar every due date before it becomes urgent.

This guide walks through the major Mississippi small business taxes, current filing rules, and the records you should keep on hand.

Quick view of the main taxes

Start with entity classification

Your Mississippi tax profile starts with how your business is structured.

• A corporation generally files corporate income and franchise tax returns.
• An LLC follows its federal tax classification for Mississippi purposes.
• An LLC treated as a partnership for federal tax purposes is generally a pass-through entity in Mississippi.
• An LLC treated as a corporation for federal tax purposes files as a corporation for Mississippi income and franchise tax purposes.
• An S corporation generally files as a pass-through entity for Mississippi income tax purposes, while franchise tax is still handled at the entity level.

That distinction matters because the tax return you file, the forms you use, and the deadline you follow all depend on entity classification. If you are forming a new business, choosing the right entity early makes later tax registration easier.

Corporate income tax and franchise tax

Mississippi requires corporations, associations, and other entities doing business, earning income, or existing in the state to file a corporate income and franchise tax return. That filing obligation can continue even if the corporation is inactive until it is officially dissolved or withdrawn.

Corporate income tax rates

Mississippi uses a graduated corporate income tax structure:

• 0% on the first $5,000 of taxable income
• 4% on the next $5,000
• 5% on taxable income above $10,000

There is no minimum corporate income tax.

Franchise tax for 2026

Mississippi also imposes franchise tax on corporations for the privilege of doing business in the state. For tax year 2026, the rate is $0.50 per $1,000 of capital employed in excess of $100,000, with a minimum tax of $25.

The franchise tax is scheduled to continue phasing down until it is repealed effective January 1, 2028, unless the law changes again.

When the return is due

The Mississippi combined income and franchise tax return is generally due on the 15th day of the fourth month following the close of the accounting year. If the due date falls on a Saturday, Sunday, or legal holiday, the deadline moves to the next business day.

Estimated payments

If your annual Mississippi income tax liability is more than $200, estimated tax payments are generally required. That is easy to miss, so build it into your cash flow planning before year-end.

Best practice for year-end records

For franchise and income tax filing, keep these items organized:

• Year-end balance sheet
• Federal return and supporting schedules
• Mississippi apportionment records, if you operate in multiple states
• Prior-year overpayment or estimated payment records
• Documentation for credits, deductions, and adjustments

Pass-through entities and electing PTEs

If your business is taxed as a pass-through entity, the owners usually report business income on their individual Mississippi returns. That is the default treatment for many LLCs, partnerships, and S corporations.

Mississippi also offers an electing pass-through entity option. In some cases, an electing entity pays tax at the entity level and generates credits for owners. Because elections can affect how income is taxed and reported, confirm the filing method before you make the election.

Sales and use tax

If your business sells taxable goods or taxable services in Mississippi, sales and use tax is usually the next major obligation to consider.

The general rate

Mississippi’s general sales tax rate is 7%. The tax usually applies to the sale of tangible personal property, and some services may also be taxable depending on the transaction. Reduced rates and exemptions can apply in specific situations.

Registration before you collect tax

Before engaging in business subject to sales tax, you generally need a permit or registration license from the Mississippi Department of Revenue. A separate permit is required for each location, and the permit does not expire as long as you continue the same business at the same location.

Returns and payment

Sales tax returns are generally due on or before the 20th day following the end of the reporting period. If the due date falls on a weekend or legal holiday, the return and payment are due on the next business day.

Use tax is the companion tax for taxable property bought outside Mississippi and brought into the state for use, storage, or consumption when sales tax was not paid at the time of purchase. In practical terms, if you buy equipment, supplies, or inventory from an out-of-state seller that does not collect Mississippi tax, use tax may apply.

Records to keep

• Sales invoices
• Exemption certificates
• Purchase receipts
• Shipping documents
• Point-of-sale reports
• Inventory and use-tax records for out-of-state purchases

Withholding tax for employees

If you have employees in Mississippi, you are responsible for withholding Mississippi income tax from wages and remitting it to the state.

Filing frequency and due dates

Withholding returns are due on the 15th day of the month following the reporting period. Depending on your average monthly withholding liability, you may file monthly or quarterly. In general, employers with average monthly withholding liability of $300 or more file monthly, while smaller liabilities may file quarterly.

Year-end information returns

Mississippi requires electronic submission of W-2s for employers that issue 10 or more W-2s. W-2s are due by January 31. 1099 reporting is also due by February 28.

Mississippi can also require electronic filing and payment for certain taxpayers, so it is worth setting up your process to work digitally from the start.

Records to keep

• Employee withholding forms
• Payroll registers
• Quarterly withholding returns
• Deposit confirmations
• W-2 and 1099 copies
• Employee change notices and address updates

Unemployment tax

Mississippi unemployment tax is paid by the employer, not deducted from the employee’s pay.

When an employer becomes liable

You may need to register with the Mississippi Department of Employment Security once you meet the state’s liability thresholds. For domestic employers, liability can begin after paying $1,000 in wages in a calendar quarter. Other rules apply for agricultural and nonprofit employers.

New employer rates

For a start-up business, Mississippi’s unemployment tax rate is:

• 1.00% in the first year of liability
• 1.10% in the second year
• 1.20% in the third year and beyond until a modified rate applies

Once you have enough experience, your modified rate can range from 0.0% to 5.4%, depending on your account history and the state’s formula.

Due dates and penalties

Mississippi requires unemployment reports and tax payments on or before the end of the month following the close of the calendar quarter. Late filing and late payment can trigger interest and penalties, so this is not a tax to leave until the last minute.

Records to keep

• Payroll records by quarter
• Wage totals by employee
• Unemployment account notices
• Quarterly reports and payment confirmations
• MDES correspondence and rate notices

A practical Mississippi tax filing checklist

Before each filing season, verify that you have:

• Your EIN and Mississippi account numbers
• Access to the Mississippi Department of Revenue TAP system
• A sales tax permit for each taxable location
• Payroll records and withholding schedules
• Year-end income statements and balance sheets
• Copies of prior-year returns and estimated payments
• Documentation for credits, exemptions, and deductions
• A calendar with every return deadline and payment date

If you operate in more than one state, add apportionment records, state-by-state payroll data, and sales source documentation to that list.

Why filing mistakes happen

Most tax issues for small businesses come from one of four problems:

• The business was formed correctly but never registered for the right tax accounts.
• The owner confused entity classification with tax classification.
• Payroll and sales tax were handled manually without a deadline system.
• Records were incomplete when the return was due.

The fix is not complicated, but it does require discipline. Build a repeatable monthly and quarterly process, and use a single source of truth for payroll, sales, and entity records.

How Zenind can help

If you are still setting up your Mississippi business, Zenind can help you form the right entity and stay organized from day one. Starting with a properly structured LLC or corporation makes it easier to register for taxes, track compliance, and maintain clean records as the business grows.

Mississippi small business tax FAQs

Do I have to file if my corporation is inactive?

Yes. Mississippi requires corporations to file even if they are inactive, until the company is officially dissolved or withdrawn.

Does Mississippi have a minimum corporate income tax?

No. Mississippi does not have a minimum corporate income tax, although corporate franchise tax may still apply.

Do I need a separate sales tax permit for every location?

Yes. If you operate multiple taxable locations, Mississippi requires a separate sales tax permit for each one.

Who pays Mississippi unemployment tax?

The employer pays the tax.

Final takeaway

Mississippi small business taxes are manageable when you break them into categories, register early, and follow a calendar instead of reacting to notices. Focus first on entity classification, then layer in sales tax, withholding, unemployment, and franchise or income tax obligations as they apply to your business.

This article is for general informational purposes only and is not legal, tax, or accounting advice. Confirm current requirements with the Mississippi Department of Revenue or the Mississippi Department of Employment Security before filing.