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Wisconsin Individual Income Tax Filing deadlines and extensions for 2024.
If you are a tax professional working with clients who are residents or have been involved in significant business operations within Wisconsin, then they might be required to file Wisconsin State Taxes. We look at the most important tax deadlines and tax extensions for Wisconsin in 2024.
Wisconsin Individual Income Tax Filing deadlines and extensions for 2024.
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.
You must file & pay Corporate Income Taxes in Wisconsin by April 15, 2025.
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.
You must file in Wisconsin by March 15, 2025.
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, 2024 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.
Estimated tax payments should be made:
See Form 1ES Instructions for the amount to pay with each voucher.
You must file & pay Individual Income Taxes in Wisconsin by April 15, 2025.
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 does not have an Estate Tax.
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.
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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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