Missouri Personal Tax Extension Guide

Form MO-60  ·  Individual Income Tax  ·  Personal Filing Guide

Missouri provides an automatic six-month extension for filing personal income tax returns to taxpayers who have received a federal extension and owe no Missouri income tax. If both conditions are met, the filing deadline moves from April 15, 2026, to October 15, 2026—no separate Missouri form required.

If you owe Missouri income tax, the automatic extension alone is not sufficient. You must file Form MO-60 (Application for Extension of Time to File) and submit full payment of your Missouri tax liability by April 15, 2026. The extension covers only the time to file—not the time to pay.

When you file your Missouri return by October 15, attach a copy of your federal extension. Keep a copy of your Form 4868 available when preparing your Missouri return.

• Credit Card: Pay online at dor.mo.gov/personal/individual or call 1-888-929-0513. MasterCard, Discover, Visa, and American Express accepted. Convenience fees apply.
• ACH Debit: Pay online at dor.mo.gov/personal/individual or call 1-888-929-0513 using your bank routing and account number. A convenience fee per transaction applies.

Mail Form MO-60 with payment to:
Taxation Division
P.O. Box 3400
Jefferson City, MO 65105-3400

Missouri imposes a failure-to-file penalty of 5% of unpaid tax per month, up to a maximum of 25%. The failure-to-pay penalty is also 5% per month, capped at 25%. Both can apply simultaneously, making timely payment critical.

• If you owe Missouri tax, file Form MO-60 and pay in full by April 15, 2026—the automatic extension alone does not apply if you have a balance.
• Attach your federal extension copy when filing your Missouri return by October 15.
• Pay online at dor.mo.gov for the fastest experience.

Missouri's extension is automatic for taxpayers with a federal extension and no state tax due—but if you owe, you must act by April 15 with Form MO-60 and full payment. File your return by October 15, 2026.

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