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Minnesota Business State Tax Extension I C Corporations Filing Guide

Make a Payment | Minnesota Department of Revenue  ·  C Corporations  ·  Business Filing Guide

Overview

Minnesota C Corporations are subject to state corporate income tax requirements, administered by the Minnesota Department of Revenue. Minnesota automatically grants an extension to file with no application or form submission required.

Original Filing Deadline

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

Extension Granted Automatically

Minnesota automatically grants a filing extension for C 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 Minnesota | Online Tax Extension Payment to pay electronically. For mail-in payments, use Make a Payment | Minnesota Department of Revenue and send to: Minnesota Department of Revenue 600 N. Robert St. St. Paul, MN 55146

Late Filing and Payment Penalties

• Failure to File: 5% of tax due.
• Failure to Pay: Penalty of 6% added to unpaid tax.

Best Practices

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

Final Thoughts

• Minnesota’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
• MN
• State Name
• Minnesota
• Business Entity Type
• C Corporations
• Extension Status
• Approved Automatically
• Return Due Date
• April 15, 2026
• Extended Due Date
• October 15, 2026
• Other Information
• Minnesota 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
• Minnesota | Online Tax Extension Payment
• Payment Voucher Form
• Make a Payment | Minnesota Department of Revenue
• State Payment Agency
• Minnesota Department of Revenue
• Mailing Address with Payment
• Minnesota Department of Revenue 600 N. Robert St. St. Paul, MN 55146
• Failure to File Penalties
• 5% of tax due.
• Failure to Pay Penalties
• Penalty of 6% added to unpaid tax.

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 Minnesota return by October 15, 2026

Quick Reference Table

State Abbreviation	MN
State Name	Minnesota
Business Entity Type	C Corporations
Extension Status	Approved Automatically
Return Due Date	April 15, 2026
Extended Due Date	October 15, 2026
Other Information	Minnesota 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	Minnesota | Online Tax Extension Payment
Payment Voucher Form	Make a Payment | Minnesota Department of Revenue
State Payment Agency	Minnesota Department of Revenue
Mailing Address with Payment	Minnesota Department of Revenue 600 N. Robert St. St. Paul, MN 55146
Failure to File Penalties	5% of tax due.
Failure to Pay Penalties	Penalty of 6% added to unpaid tax.