2023 Missouri State Tax Deadlines

Missouri Individual Income Tax Filing deadlines and extensions for 2023.

If you are a resident or have been involved in significant business operations within Missouri then you might be required to file Missouri State Taxes. We look at the most important tax deadlines and tax extensions for Missouri in 2023.

C Corporation

Missouri C Corporation Tax Deadlines for 2023

You must file & pay Corporate Income Taxes in Missouri by April 16, 2024.

Applicable forms:
MO-1120 - Corporation Income Tax Return

Extension to File Taxes in Missouri for 2023

You must send payment for taxes in Missouri for the fiscal year 2023 by April 16, 2024.

The Extension Deadline is October 15, 2024 to file your Missouri income tax return.

Missouri automatically grants 6 months extensions on filing corporate income tax returns if a federal extension is filed. This means you do not need to file for an extension in Missouri.

This is an extension to FILE, not an extension to PAY - payment is still due April 16, 2024.

Pass-Throughs

Missouri S Corporation & Partnership Tax Deadlines for 2023

You must file in Missouri by April 16, 2024.

Applicable forms:
MO-1120S - S-Corporation Income Tax Return
MO-1065 - Partnership Return of Income

Extension to File S Corporation & Partnership Taxes in Missouri for 2023

You must send payment for taxes in Missouri for the fiscal year 2023 by April 16, 2024.

The Extension Deadline is October 15, 2024 to file your Missouri income tax return.

Missouri automatically grants 6 months extensions on filing pass-through entity income tax returns if a federal extension is filed. This means you do not need to file for an extension in Missouri.

This is an extension to FILE, not an extension to PAY - payment is still due April 16, 2024.

Missouri Individual Tax Deadlines for 2023

Estimated Tax Deadline for Missouri 2023

Estimated tax payments should be made:  

  • April 18, 2023
  • June 15, 2023
  • November 15, 2023
  • January 15, 2024

See Form MO-1040ES or the amount to pay with each voucher.

Individual Tax Deadline for Missouri 2023

You must file & pay Individual Income Taxes in Missouri by April 16, 2024.

Applicable forms:
Form MO-1040 - Full Time Residents
Form MO-1040 & MO-NRI - Non-Residents & Part-Year Residents

Extension to File Taxes in Missouri for 2023

You must send payment for taxes in Missouri for the fiscal year 2023 by April 16, 2024.

The Extension Deadline is October 15, 2024 to file your Missouri Individual Income tax return.

Missouri will automatically grant a 6 months extension on filing personal income taxes if a federal extension is filed. This means you do not need to file for an extension in Missouri if you file a federal extension and attach the federal extension to the state return. If you do NOT file a federal extension, file Form MO-60.

This is an extension to FILE, not an extension to PAY - payment is still due April 16, 2024.

Estates Tax Deadline for Missouri 2023

Missouri does not have an Estate Tax.

Farmer and Fisherman Taxes for Missouri 2023

If at least 2/3 of your gross income for the taxable year is derived from farming, you may pay estimated tax at any time on or before January 15, 2024. If you wait until January 15, 2024, you must pay the entire balance of the estimated tax. However, if farmers file their tax return on or before March 1, 2024, and pay the total tax at that time, they need not file estimated tax.

Sources

The material discussed on this page is meant for general illustration and/or informational purposes only and is not to be construed as investment, tax, or legal advice. You must exercise your own independent professional judgment, recognizing that advice should not be based on unreasonable factual or legal assumptions or unreasonably rely upon representations of the client or others. Further, any advice you provide in connection with tax return preparation must comply in full with the requirements of IRS Circular 230.

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