How to pay Missouri estimated taxes.

Missouri collects its own estimated tax through the Missouri 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 Missouri estimated tax is expected to be $100 or more. That means your expected tax minus credits, including withholding.

You owe no addition to tax if each installment is paid on time and your payments equal at least the lesser of 90% of your current-year tax (66 2/3% for farmers) or 100% of the tax on your prior-year return, if that return covered 12 months and showed a tax liability. Missouri has no higher prior-year percentage for high earners.

If you underpay: 7% simple interest for 2026 (8% for 2025), charged as an addition to tax on each underpaid installment.

For how to pick a safe amount, see how much to pay in estimated taxes.

Deadlines

Pay in full with the first voucher, or in equal installments due April 15, 2026, June 15, 2026, September 15, 2026, and January 15, 2027. This matches the federal schedule. If you first become required later in the year, you start at the next due date. If you were not required to file a declaration earlier in the year, you can skip January 15 by filing and paying by January 31.

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 Missouri, step by step

What you need

Nothing to set up. MyTax Missouri, Pay Individual Income Taxes Online takes payments without an account.
Your Social Security number and a copy of last year's Missouri return.
Your bank routing and account numbers.

Start at MyTax Missouri, Pay Individual Income Taxes Online, Missouri's official payment site.

Go to the Pay Individual Income Taxes Online page on MyTax Missouri. You do not need to register.
Select Make a Personal Income Tax Estimated Payment (MO-1040ES).
Enter your Social Security number, name, and contact information.
Enter the amount and your bank routing and account numbers for an e-check.
Submit and save your confirmation. E-check payments take 3 to 4 business days to post.

Other ways to pay: E-check has a $0.50 handling fee. Credit and debit cards (Visa, MasterCard, Discover, American Express) cost $1.25 for payments up to $50, $1.75 up to $75, $2.15 up to $100, and 2.15% above $100. You can also mail a check with the MO-1040ES voucher to Missouri Department of Revenue, P.O. Box 555, Jefferson City, MO 65105-0555.

Missouri will not fill these payments in for you. Your preparer has to enter each estimated payment on your Missouri return. Keep your own record of the date, amount, and confirmation number.

Extension payments

If you have an approved federal extension and do not expect to owe Missouri tax, you get an automatic Missouri extension (to October 15) without filing anything. If you owe, or have no federal extension, file Form MO-60 by April 15 for up to six months. Making an extension payment online under File Personal Income Tax Extension of Time to File (MO-60) also files the MO-60. An extension does not give you more time to pay, and a 5% addition plus interest applies to tax unpaid after April 15.

Make this year's first estimated payment as a separate transaction, marked as an estimate for the current year.

Good to know

Missouri's $100 threshold is one of the lowest in the country.
Kansas City and St. Louis each levy a 1% earnings tax on residents and on nonresidents who work there. The cities collect it, not the state, so the state portal does not cover it.
Online extension payments for the prior year can only be made between January 1 and October 31.
Farmers with at least two-thirds of gross income from farming can pay by January 15 or file and pay by March 1.
Paying other states? See the payment links for every state's official site, and the federal walkthrough.

Official sources

Checked October 2026 against the Missouri Department of Revenue's own publications.

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.