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Individuals Calendar
Content_Area1
Title
Location
Start Date
End Time
All Day Event
ICS Download File
WisTax, Wisconsin Telefile and My Tax Account outage 5am-noon
3/1/2026 12:00 AM
3/1/2026 11:59 PM
Yes
Individual income tax due for farmers and fishers who did not make estimate payments
3/2/2026 12:00 AM
3/2/2026 11:59 PM
Yes
https://www.revenue.wi.gov/EventDownloads/Individuals/2026-03-02-Individual-income-tax-due-for-farmers-and-fishers-who-did-not-make-estimate-payment.ics
WisTax, Wisconsin Telefile and My Tax Account outage 5am-noon
3/22/2026 12:00 AM
3/22/2026 11:59 PM
Yes
Individual income tax returns due
4/15/2026 12:00 AM
4/15/2026 11:59 PM
Yes
https://www.revenue.wi.gov/EventDownloads/Individuals/2026-04-15-Individual-income-tax-returns-due.ics
Fiduciary income tax returns due
4/15/2026 12:00 AM
4/15/2026 11:59 PM
Yes
https://www.revenue.wi.gov/EventDownloads/Individuals/2026-04-15-Fiduciary-income-tax-returns-due.ics
1st quarter individual income tax estimated payment due
4/15/2026 12:00 AM
4/15/2026 11:59 PM
Yes
https://www.revenue.wi.gov/EventDownloads/Individuals/2026-04-15-1st-quarter-individual-income-tax-estimated-payment-due.ics
WisTax, Wisconsin Telefile and My Tax Account outage 5am-noon
4/26/2026 12:00 AM
4/26/2026 11:59 PM
Yes
State of Wisconsin holiday - Revenue offices closed
5/25/2026 12:00 AM
5/25/2026 11:59 PM
Yes
WisTax, Wisconsin Telefile and My Tax Account outage 5am-noon
5/31/2026 12:00 AM
5/31/2026 11:59 PM
Yes
WisTax, Wisconsin Telefile and My Tax Account outage
6/5/2026 12:00 AM
6/5/2026 11:59 PM
Yes
WisTax, Wisconsin Telefile and My Tax Account outage
6/6/2026 12:00 AM
6/6/2026 11:59 PM
Yes
WisTax, Wisconsin Telefile and My Tax Account outage
6/7/2026 12:00 AM
6/7/2026 11:59 PM
Yes
1-ES 2nd quarter estimated payment due for individual income, estates and trusts
6/15/2026 12:00 AM
6/15/2026 11:59 PM
Yes
https://www.revenue.wi.gov/EventDownloads/Individuals/2026-06-15-1-ES-2nd-quarter-estimated-payment-due-for-individual-income-estates-and-trust.ics
WisTax, Wisconsin Telefile and My Tax Account outage
6/21/2026 12:00 AM
6/21/2026 11:59 PM
Yes
WisTax, Wisconsin Telefile and My Tax Account outage 5am-noon
7/26/2026 12:00 AM
7/26/2026 11:59 PM
Yes
WisTax, Wisconsin Telefile and My Tax Account outage 5am-noon
8/23/2026 12:00 AM
8/23/2026 11:59 PM
Yes
State of Wisconsin holiday - Revenue offices closed
9/7/2026 12:00 AM
9/7/2026 11:59 PM
Yes
1-ES 3rd quarter estimated payment due for individual income, estates and trusts
9/15/2026 12:00 AM
9/15/2026 11:59 PM
Yes
https://www.revenue.wi.gov/EventDownloads/Individuals/2026-09-15-1-ES-3rd-quarter-estimated-payment-due-for-individual-income-estates-and-trusts.ics
WisTax, Wisconsin Telefile and My Tax Account outage
9/18/2026 12:00 AM
9/18/2026 11:59 PM
Yes
WisTax, Wisconsin Telefile and My Tax Account outage
9/19/2026 12:00 AM
9/19/2026 11:59 PM
Yes
WisTax, Wisconsin Telefile and My Tax Account outage
9/20/2026 12:00 AM
9/20/2026 11:59 PM
Yes
Fiduciary income tax returns extension deadline
10/15/2026 12:00 AM
10/15/2026 11:59 PM
Yes
https://www.revenue.wi.gov/EventDownloads/Individuals/2026-10-15-Fiduciary-income-tax-returns-extension-deadline.ics
Extended due date for individual income tax returns for those with extensions
10/15/2026 12:00 AM
10/15/2026 11:59 PM
Yes
https://www.revenue.wi.gov/EventDownloads/Individuals/2026-10-15-Extended-due-date-for-individual-income-tax-returns-for-those-with-extensions.ics
WisTax, Wisconsin Telefile and My Tax Account outage
10/25/2026 12:00 AM
10/25/2026 11:59 PM
Yes
WisTax, Wisconsin Telefile and My Tax Account outage 5am-noon
11/22/2026 12:00 AM
11/22/2026 11:59 PM
Yes
State of Wisconsin holiday - Revenue offices closed
11/26/2026 12:00 AM
11/26/2026 11:59 PM
Yes
WisTax, Wisconsin Telefile and My Tax Account outage 5am-noon
12/20/2026 12:00 AM
12/20/2026 11:59 PM
Yes
State of Wisconsin holiday - Revenue offices closed
12/24/2026 12:00 AM
12/24/2026 11:59 PM
Yes
State of Wisconsin holiday - Revenue offices closed
12/25/2026 12:00 AM
12/25/2026 11:59 PM
Yes
State of Wisconsin holiday - Revenue offices closed
12/31/2026 12:00 AM
12/31/2026 11:59 PM
Yes
State of Wisconsin holiday - Revenue offices closed
1/1/2027 12:00 AM
1/1/2027 11:59 PM
Yes
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