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Missouri Business State Tax Extension I S Corporations Filing Guide

Form MO-7004 | Application for Extension of Time to File  ·  S-Corporations  ·  Business Filing Guide

Overview

Missouri S Corporations are subject to state business tax filing requirements, administered by the Missouri Department of Revenue. Missouri automatically grants an extension to file with no application or form submission required.

Original Filing Deadline

The original due date for the Missouri S-Corporations return is April 15, 2026. File or remit full payment by this date to remain in good standing.

Extension Granted Automatically

Missouri automatically grants a filing extension for S-Corporations. The extended filing deadline is October 15, 2026. No application or form submission is required to receive this extension.

Payment Is Still Due by Original Deadline

The extension applies to filing only—it is not an extension to pay taxes owed. Any outstanding tax liability must be paid by the original due date of April 15, 2026 to avoid penalties and interest. Use the Missouri | Online Tax Extension Payment to pay electronically. For mail-in payments, use Form MO-7004 | Application for Extension of Time to File and send to: Missouri Department of Revenue P.O. Box 3365 Jefferson City, MO 65105-3365

Late Filing and Payment Penalties

• Failure to File: 5% of the amount due for each month, not to exceed 25% in the aggregate.
• Failure to Pay: 5% of the amount due for each month, not to exceed 25%.

Best Practices

• Estimate and pay your Missouri business tax by April 15, 2026 to avoid interest and penalties.
• No extension form is required—Missouri grants the extension automatically.
• Use the state online payment portal for fast, convenient electronic payment.
• Set a reminder to file your completed Missouri S-Corporations return by October 15, 2026.

Final Thoughts

• Missouri’s automatic extension simplifies the process—no paperwork required. Pay any balance due by April 15, 2026 and file your return by October 15, 2026.
• Quick Reference Table
• State Abbreviation
• MO
• State Name
• Missouri
• Business Entity Type
• S-Corporations
• Extension Status
• Approved Automatically
• Return Due Date
• April 15, 2026
• Extended Due Date
• October 15, 2026
• Other Information
• Missouri grants you an automatic 6-month extension to file your business tax return. The extension is NOT an extension to pay any taxes you may have due. Tax payments are due by the original return due date.
• Online Payment
• Missouri | Online Tax Extension Payment
• Payment Voucher Form
• Form MO-7004 | Application for Extension of Time to File
• State Payment Agency
• Missouri Department of Revenue
• Mailing Address with Payment
• Missouri Department of Revenue P.O. Box 3365 Jefferson City, MO 65105-3365
• Failure to File Penalties
• 5% of the amount due for each month, not to exceed 25% in the aggregate.
• Failure to Pay Penalties
• 5% of the amount due for each month, not to exceed 25%.

Working with a Tax Professional

Business tax returns are complex—a licensed CPA or Enrolled Agent can maximize deductions, ensure accurate calculations, and handle filing on your behalf. Here's how working with a TaxPro typically goes:

1. 1Get matched with a verified U.S.-based CPA or Enrolled Agent
2. 2Upload your business documents via secure drag-and-drop
3. 3Review and approve your return with upfront, transparent fees
4. 4Your TaxPro files your Missouri return by October 15, 2026

Quick Reference Table

State Abbreviation	MO
State Name	Missouri
Business Entity Type	S-Corporations
Extension Status	Approved Automatically
Return Due Date	April 15, 2026
Extended Due Date	October 15, 2026
Other Information	Missouri grants you an automatic 6-month extension to file your business tax return. The extension is NOT an extension to pay any taxes you may have due. Tax payments are due by the original return due date.
Online Payment	Missouri | Online Tax Extension Payment
Payment Voucher Form	Form MO-7004 | Application for Extension of Time to File
State Payment Agency	Missouri Department of Revenue
Mailing Address with Payment	Missouri Department of Revenue P.O. Box 3365 Jefferson City, MO 65105-3365
Failure to File Penalties	5% of the amount due for each month, not to exceed 25% in the aggregate.
Failure to Pay Penalties	5% of the amount due for each month, not to exceed 25%.