2024 Wisconsin State Tax Deadlines
If you are a resident or have been involved in significant business operations within Wisconsin, then you might be required to file Wisconsin State Taxes. We look at the most important tax deadlines and tax extensions for Wisconsin in 2024.
Wisconsin Business Tax Deadlines for 2024
C Corporation
Wisconsin C Corporation Tax Deadlines for 2024
You must file & pay Corporate Income Taxes in Wisconsin by April 15, 2025.
- File Online with Wisconsin Department of Revenue.
- File by Mail must be postmarked by the due date.
Applicable form:
Form 4 – Wisconsin Corporation Franchise or Income Tax Return.
Extension to File Taxes in Wisconsin for 2024
You must send payment for taxes in Wisconsin for the fiscal year 2024 by April 15, 2025.
The Extension Deadline is November 15, 2025, to file your Wisconsin corporate income tax return.
Wisconsin automatically grants 7 months extensions on filing corporate income tax returns. This means you do not need to file for an extension in Wisconsin.
This is an extension to FILE, not an extension to PAY – payment is still due April 15, 2025.
Pass-Throughs
Wisconsin S Corporation & Partnership Tax Deadlines for 2024
You must file in Wisconsin by March 15, 2025.
- File Online with Wisconsin Department of Revenue.
- File by Mail must be postmarked by the due date.
Applicable Forms:
- Form 5S – S-Corporation Return
- Form 3 – Partnership Return
Extension to File S Corporation & Partnership Taxes in Wisconsin for 2024
You must send a payment for taxes in Wisconsin for the fiscal year 2024 by March 15, 2025.
The Extension Deadline is October 15, 2024 to file your Wisconsin S-Corporation income tax return and September 15.2023 to file your Wisconsin Partnership income tax return.
Wisconsin automatically grants 7 months extensions on filing S Corporation income tax returns, and 6 months extensions on filing Partnership income tax returns. This means you do not need to file for an extension in Wisconsin.
This is an extension to FILE, not an extension to PAY – payment is still due March 15, 2025.
Extension to File Taxes in Wisconsin for 2024
You must send payment for taxes in Wisconsin for the fiscal year 2024 by April 15, 2025.
The Extension Deadline is October 15, 2025, to file your Wisconsin Individual Income tax return.
Wisconsin will automatically grant a 6 months extension on filing personal income taxes if a federal extension is filed. Wisconsin does not have its own separate extension application, so you will have to file a federal extension and attach the federal extension to the state return to receive the extension.
This is an extension to FILE, not an extension to PAY – payment is still due April 15, 2025.
Wisconsin Individual Tax Deadlines for 2024
Estimated Tax Deadline for Wisconsin 2024
Estimated tax payments are made:
- April 15, 2024
- June 15, 2024
- September 15, 2024
- January 15, 2025
See Form 1ES Instructions for the amount to pay with each voucher.
Individual Tax Deadline for Wisconsin 2024
You must file & pay Individual Income Taxes in Wisconsin by April 15, 2025.
- File Online with Wisconsin Department of Revenue
- File by Mail must be postmarked by the due date
Applicable forms:
- Form 1 – Residents
- Form 1NPR – Nonresidents or Part-Year Residents
Estates Tax Deadline for Wisconsin 2024
Wisconsin does not have an Estate Tax.
Farmer and Fisherman Taxes for Wisconsin 2024
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, 2025. If you wait until January 15, 2025, you must pay the entire balance of the estimated tax. However, if farmers file their tax return on or before March 1, 2025, and pay the total tax at that time, they need not file estimated tax.
Sources
- Wisconsin Department of Revenue Individual Filing Information
- Wisconsin Department of Revenue - Due Date Calendar for Taxes
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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