How to pay Mississippi estimated taxes.
Mississippi collects its own estimated tax through the Mississippi Department of Revenue, separate from the IRS. Here’s who needs to pay, when, and how to pay online.
Do you need to pay?
You must make estimated payments if your annual Mississippi tax will be more than $200 and less than 80% of it is covered by withholding.
Your estimates and withholding must total at least the lesser of 80% of your current-year tax or 100% of your prior-year tax, according to the department's Form 80-320 worksheet. No interest applies if your tax for the year is $200 or less. Mississippi has no higher prior-year percentage for high earners.
If you underpay: Interest of 1/2% per month (6% a year) on the underpaid amount from each due date until paid.
For how to pick a safe amount, see how much to pay in estimated taxes.
Deadlines
Payments are due April 15, June 15, and September 15, 2026, and January 15, 2027. This matches the federal dates.
| Payment | Due |
|---|---|
| 1st | April 15 |
| 2nd | June 15 |
| 3rd | September 15 |
| 4th | January 15 of the next year |
A date on a weekend or holiday moves to the next business day. Pay at least two business days early.
Paying Mississippi, step by step
What you need
- Nothing to set up. Taxpayer Access Point (TAP) takes payments without an account.
- Your Social Security number and a copy of last year's Mississippi return.
- Your bank routing and account numbers.
Start at Taxpayer Access Point (TAP), Mississippi's official payment site.
- Go to TAP at tap.dor.ms.gov. You do not need an account to make an estimated payment.
- Under the "I want to..." section, select Make an Estimate Payment.
- Enter your identifying information (SSN and name) and choose the 2026 tax year.
- Enter the amount and your bank account details.
- Submit and save your confirmation number.
Other ways to pay: TAP bank payments are free. To pay by credit card or e-check, use ms.gov/dor/quickpay, where Mississippi Interactive charges a convenience fee (rate not published by the department). Or mail a check with Form 80-106.
Mississippi will not fill these payments in for you. Your preparer has to enter each estimated payment on your Mississippi return. Keep your own record of the date, amount, and confirmation number.
Extension payments
If you have a federal extension, Mississippi automatically extends your filing deadline to October 15. Attach a copy of federal Form 4868 when you file. An extension does not give you more time to pay. Pay any tax due by April 15 to avoid interest and penalty, through TAP or with the Form 80-106 voucher.
Make this year's first estimated payment as a separate transaction, marked as an estimate for the current year.
Good to know
- The threshold is low: you need estimates once your annual tax tops $200, compared with $500 or more in many states.
- The underpayment charge is a flat 1/2% per month, not a rate tied to the prime rate.
- Farmers and fishermen (at least two-thirds of gross income) are exempt if they pay their estimate by January 15 or file and pay by March 1.
- Mississippi has no local income taxes.
- Paying other states? See the payment links for every state's official site, and the federal walkthrough.
Official sources
Checked October 2026 against the Mississippi Department of Revenue's own publications.
- Mississippi DOR, Individual Income Tax FAQs
- Mississippi DOR, Form 80-320 Interest and Penalty Worksheet
- Mississippi TAP
This guide is for general education and reflects rules as of October 2026. Tax law and agency websites change, and your situation may have details that change the answer. Please talk with your tax professional before acting on it.