Tax Professionals Calendar

Title
  
Description
Start Date
  
End Time
  
Location
  
All Day Event
  
ICS Download File
  
ID
  
1st quarter dry cleaning fee returns due
4/25/2025 12:00 AM4/25/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-25-1st-quarter-dry-cleaning-fee-returns-due.ics3104
My Tax Account, Wisconsin Telefile and Wis e-File system file outage 5am - Noon
4/27/2025 12:00 AM4/27/2025 11:59 PMYes3105
Sales and use tax return due - monthly and quarterly
4/30/2025 12:00 AM4/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-Sales-and-use-tax-return-due-monthly-and-quarterly.ics3106
WT-6 deposit report due - semi-monthly, monthly and quarterly
4/30/2025 12:00 AM4/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-WT-6-deposit-report-due-semi-monthly-monthly-and-quarterly.ics3107
Local expo tax return due - monthly and quarterly
4/30/2025 12:00 AM4/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-Local-expo-tax-return-due-monthly-and-quarterly.ics3108
Premier resort tax return due - monthly and quarterly
4/30/2025 12:00 AM4/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-Premier-resort-tax-return-due-monthly-and-quarterly.ics3110
911 fee due - monthly
4/30/2025 12:00 AM4/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-911-fee-due-monthly.ics3111
Rental vehicle tax return due - quarterly
4/30/2025 12:00 AM4/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-Rental-vehicle-tax-return-due-quarterly.ics3112
Alternate fuel, terminal operator return due - monthly, quarterly
4/30/2025 12:00 AM4/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-Alternate-fuel-terminal-operator-return-due-monthly-quarterly.ics3113
Supplier, shipper, transporter fuel tax return due - monthly
4/30/2025 12:00 AM4/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3114
WT-6 deposit report due - semi-monthly
5/15/2025 12:00 AM5/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-15-WT-6-deposit-report-due-semi-monthly.ics3115
Exempt corporation franchise or income tax return due
5/15/2025 12:00 AM5/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-15-Exempt-corporation-franchise-or-income-tax-return-due.ics3116
Exempt non-employees trust, IRA, MSA fiduciary income tax return due
5/15/2025 12:00 AM5/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-15-Exempt-non-employees-trust-IRA-MSA-fiduciary-income-tax-return-due.ics3117
Cigarette-tobacco products return due - monthly
5/15/2025 12:00 AM5/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-15-Cigarette-tobacco-products-return-due-monthly.ics3118
Liquor-beer return due - monthly
5/15/2025 12:00 AM5/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-15-Liquor-beer-return-due-monthly.ics3119
Supplier, shipper, transporter fuel tax payment due - monthly
5/15/2025 12:00 AM5/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics3120
Blenders fuel tax return due - intermittent monthly
5/15/2025 12:00 AM5/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-15-Blenders-fuel-tax-return-due-intermittent monthly.ics3121
Sales and use tax return due - early monthly
5/20/2025 12:00 AM5/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-20-Sales-and-use-tax-return-due-early-monthly.ics3122
Aviation fuel tax return due - monthly
5/20/2025 12:00 AM5/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-20-Aviation-fuel-tax-return-due-monthly.ics3123
State of Wisconsin holiday - Revenue offices closed
5/26/2025 12:00 AM5/26/2025 11:59 PMYes3124
Sales and use tax return due - monthly
6/2/2025 12:00 AM6/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-02-Sales-and-use-tax-return-due-monthly.ics3125
WT-6 deposit report due - semi-monthly and monthly
6/2/2025 12:00 AM6/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-02-WT-6-deposit-report-due-semi-monthly-and-monthly.ics3126
Local expo tax return due - monthly
6/2/2025 12:00 AM6/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-02-Local-expo-tax-return-due-monthly.ics3127
Premier resort tax return due - monthly
6/2/2025 12:00 AM6/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-02-Premier-resort-tax-return-due-monthly.ics3128
911 fee due - monthly
6/2/2025 12:00 AM6/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-02-911-fee-due-monthly.ics3129
Alternate fuel, terminal operator return due - monthly
6/2/2025 12:00 AM6/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-02-Alternate-fuel-terminal-operator-return-due-monthly.ics3130
Supplier, shipper, transporter fuel tax return due - monthly
6/2/2025 12:00 AM6/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-02-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3131
Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon
6/8/2025 12:00 AM6/8/2025 11:59 PMYes3132
1-ES 2nd quarter individual income tax estimated payment due
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-1-ES-2nd-quarter-individual-income-tax-estimated-payment-due.ics3133
WT-6 deposit report due - semi-monthly
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-WT-6-deposit-report-due-semi-monthly.ics3134
Cigarette-tobacco products return due - monthly
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-Cigarette-tobacco-products-return-due-monthly.ics3135
Liquor-beer return due - monthly
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-Liquor-beer-return-due-monthly.ics3136
Supplier, shipper, transporter fuel tax payment due - monthly
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics3137
Blenders fuel tax return due - intermittent monthly
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-Blenders-fuel-tax-return-due-intermittent-monthly.ics3138
Corp-ES 2nd corporation estimated payment due
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-Corp-ES-2nd-corporation-estimated-payment-due.ics3139
PW-ES 2nd pass-through withholding estimated payment due
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-PW-ES-2nd-pass-through-withholding-estimated-payment-due.ics3140
Sales and use tax return due - early monthly
6/20/2025 12:00 AM6/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-20-Sales-and-use-tax-return-due-early-monthly.ics3141
Aviation fuel tax return due - monthly
6/20/2025 12:00 AM6/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-20-Aviation-fuel-tax-return-due-monthly.ics3142
Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon
6/29/2025 12:00 AM6/29/2025 11:59 PMYes3143
WT-6 deposit report due - semi-monthly and monthly
6/30/2025 12:00 AM6/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-30-WT-6-deposit-report-due-semi-monthly-and-monthly.ics3144
Local expo tax return due - monthly
6/30/2025 12:00 AM6/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-30-Local-expo-tax-return-due-monthly.ics3145
Premier resort tax return due - monthly
6/30/2025 12:00 AM6/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-30-Premier-resort-tax-return-due-monthly.ics3146
911 fee due - monthly
6/30/2025 12:00 AM6/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-30-911-fee-due-monthly.ics3147
Alternate fuel, terminal operator return due - monthly
6/30/2025 12:00 AM6/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-30-Alternate-fuel-terminal-operator-return-due-monthly.ics3148
Supplier, shipper, transporter fuel tax return due - monthly
6/30/2025 12:00 AM6/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-30-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3149
State of Wisconsin holiday - Revenue offices closed
7/4/2025 12:00 AM7/4/2025 11:59 PMYes3150
WT-6 deposit report due - semi-monthly
7/15/2025 12:00 AM7/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-15-WT-6-deposit-report-due-semi-monthly.ics3151
Cigarette-tobacco products return due - monthly, quarterly
7/15/2025 12:00 AM7/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-15-Cigarette-tobacco-products-return-due-monthly-quarterly.ics3152
Sales and use tax return due - early monthly
7/21/2025 12:00 AM7/21/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-21-Sales-and-use-tax-return-due-early-monthly.ics3153
Aviation fuel tax return due - monthly, quarterly
7/21/2025 12:00 AM7/21/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-21-Aviation-fuel-tax-return-due-monthly-quarterly.ics3154
2nd quarter dry cleaning fee returns due
7/25/2025 12:00 AM7/25/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-25-2nd-quarter-dry-cleaning-fee-returns-due.ics3155
Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon
7/27/2025 12:00 AM7/27/2025 11:59 PMYes3156
Sales and use tax return due - monthly and quarterly
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-Sales-and-use-tax-return-due-monthly-and-quarterly.ics3157
WT-6 deposit report due - semi-monthly, monthly and quarterly
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-WT-6-deposit-report-due-semi-monthly-monthly-and-quarterly.ics3158
Local expo tax return due - monthly and quarterly
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-Local-expo-tax-return-due-monthly-and-quarterly.ics3159
Premier resort tax return due - monthly and quarterly
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-Premier-resort-tax-return-due-monthly-and-quarterly.ics3160
911 fee due - monthly
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-911-fee-due-monthly.ics3161
Rental vehicle tax return due - quarterly
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-Rental-vehicle-tax-return-due-quarterly.ics3162
Alternate fuel, terminal operator return due - monthly, quarterly
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-Alternate-fuel-terminal-operator-return-due-monthl-quarterly.ics3163
Supplier-shipper-transporter fuel tax return due - monthly
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3164
WT-6 deposit report due - semi-monthly
8/15/2025 12:00 AM8/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-08-15-WT-6-deposit-report-due-semi-monthly.ics3165
Cigarette-tobacco products return due - monthly
8/15/2025 12:00 AM8/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-08-15-Cigarette-tobacco-products-return-due-monthly.ics3166
Liquor-beer return due - monthly
8/15/2025 12:00 AM8/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-08-15-Liquor-beer-return-due-monthly.ics3167
Supplier-shipper-transporter fuel tax payment due - monthly
8/15/2025 12:00 AM8/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-08-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics3168
Blenders fuel tax return due - intermittent monthly
8/15/2025 12:00 AM8/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-08-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics3169
Sales and use tax return due - early monthly
8/20/2025 12:00 AM8/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-08-20-Sales-and-use-tax-return-due-early-monthly.ics3170
Aviation fuel tax return due - monthly
8/20/2025 12:00 AM8/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-08-20-Aviation-fuel-tax-return-due-monthly.ics3171
State of Wisconsin holiday - Revenue offices closed
9/1/2025 12:00 AM9/1/2025 11:59 PMYes3172
Sales and use tax return due - monthly
9/2/2025 12:00 AM9/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-02-Sales-and-use-tax-return-due-monthly.ics3173
WT-6 deposit report due - semi-monthly, monthly
9/2/2025 12:00 AM9/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-02-WT-6-deposit-report-due-semi-monthly-monthly.ics3174
Local expo tax return due - monthly
9/2/2025 12:00 AM9/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-02-Local-expo-tax-return-due-monthly.ics3175
Premier resort tax return due - monthly
9/2/2025 12:00 AM9/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-02-Premier-resort-tax-return-due-monthly.ics3176
911 fee due - monthly
9/2/2025 12:00 AM9/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-02-911-fee-due-monthly.ics3177
Alternate fuel, terminal operator return due - monthly
9/2/2025 12:00 AM9/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-02-Alternate-fuel-terminal-operator-return-due-monthly.ics3178
Supplier-shipper-transporter fuel tax return due - monthly
9/2/2025 12:00 AM9/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-02-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3179
Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon
9/7/2025 12:00 AM9/7/2025 11:59 PMYes3180
1-ES 3rd quarter individual income tax estimated payment due
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-1-ES-3rd-quarter-individual-income-tax-estimated-payment-due.ics3181
WT-6 deposit report due - semi-monthly
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-WT-6-deposit-report-due-semi-monthly.ics3182
Cigarette, tobacco products return due - monthly
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-Cigarette-tobacco-products-return-due-monthly.ics3183
Liquor, beer return due - monthly
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-Liquor-beer-return-due-monthly.ics3184
Supplier, shipper, transporter fuel tax payment due - monthly
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics3185
Blenders fuel tax return due - intermittent monthly
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics3186
PW-ES 3rd pass-through withholding estimated payment due
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-PW-ES-3rd-pass-through-withholding-estimated-payment-due.ics3187
Partnership tax return extension deadline
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-Partnership-tax-return-extension-deadline.ics3188
Corp-ES 3rd corporation estimated payment due
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-Corp-ES-3rd-corporation-estimated-payment-due.ics3189
Sales and use tax return due - early monthly
9/22/2025 12:00 AM9/22/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-22-Sales-and-use-tax-return-due-early-monthly.ics3190
Aviation fuel tax return due - monthly
9/22/2025 12:00 AM9/22/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-22-Aviation-fuel-tax-return-due-monthly.ics3191
Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon
9/28/2025 12:00 AM9/28/2025 11:59 PMYes3192
Sales and use tax return due - monthly
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-Sales-and-use-tax-return-due-monthly.ics3193
Fiduciary tax return extension deadline
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-Fiduciary-tax-return-extension-deadline.ics3194
WT-6 deposit report due - semi-monthly and monthly
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-WT-6-deposit-report-due-semi-monthly-and-monthly.ics3195
Local expo tax return due - monthly
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-Local-expo-tax-return-due-monthly.ics3198
Premier resort tax return due - monthly
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-Premier-resort-tax-return-due-monthly.ics3199
911 fee due - monthly
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-911-fee-due-monthly.ics3200
Alternate fuel, terminal operator return due - monthly
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-Alternate-fuel-terminal-operator-return-due-monthly.ics3201
Supplier, shipper, transporter fuel tax return due - monthly
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3202
1CNP extension deadline
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-1CNP-extension-deadline.ics3203
1CNS extension deadline
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-1CNS-extension-deadline.ics3204
S Corporation tax return extension deadline
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-S-Corporation-tax-return-extension-deadline.ics3205
Exempt employees trust, ISA, MSA Fiduciary tax return extension deadline
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-Exempt-employees-trust-ISA-MSA-Fiduciary-tax-return-extension-deadline.ics3206
PW-1 (Partnerships) extension deadline
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-PW-1-(Partnerships)-extension-deadline.ics3207
PW-1 (S Corps) extension deadline
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-PW-1-(S Corps)-extension-deadline.ics3208
Cigarette, tobacco products return due - monthly, quarterly
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-Cigarette-tobacco-products-return-due-monthly-quarterly.ics3209
Liquor, beer return due - monthly
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-Liquor-beer-return-due-monthly.ics3210
Supplier, shipper, transporter fuel tax payment due - monthly
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics3211
Blenders fuel tax return due - intermittent monthly
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics3212
Wine direct shippers return due - quarterly
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-Wine-direct-shippers-return-due-quarterly.ics3213
Sales and use tax return due - early monthly
10/20/2025 12:00 AM10/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-20-Sales-and-use-tax-return-due-early-monthly.ics3214
Aviation fuel tax return due - monthly, quarterly
10/20/2025 12:00 AM10/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-20-Aviation-fuel-tax-return-due-monthly-quarterly.ics3215
3rd quarter dry cleaning fee returns due
10/25/2025 12:00 AM10/25/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-25-3rd-quarter-dry-cleaning-fee-returns-due.ics3216
Holder reports due
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-Holder-reports-due.ics3217
Sales and use tax return due - monthly and quarterly
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-Sales-and-use-tax-return-due-monthly-and-quarterly.ics3218
WT-6 deposit report due - semi-monthly, monthly and quarterly
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-WT-6-deposit-report-due-semi-monthly-monthly-and-quarterly.ics3219
Local expo tax return due - monthly and quarterly
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-Local-expo-tax-return-due-monthly-and-quarterly.ics3220
Premier resort tax return due - monthly and quarterly
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-Premier-resort-tax-return-due-monthly-and-quarterly.ics3221
911 fee due - monthly
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-911-fee-due-monthly.ics3222
Rental vehicle tax return due - quarterly
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-Rental-vehicle-tax-return-due-quarterly.ics3223
Alternate fuel, terminal operator return due - monthly, quarterly
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-Alternate-fuel-terminal-operator-return-due-monthly-quarterly.ics3224
Supplier, shipper, transporter fuel tax return due - monthly
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3225
Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon
11/2/2025 12:00 AM11/2/2025 11:59 PMYes3226
WT-6 deposit report due - semi-monthly
11/17/2025 12:00 AM11/17/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-17-WT-6-deposit-report-due-semi-monthly.ics3227
PW-1 (Estates and trusts) extension deadline
11/17/2025 12:00 AM11/17/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-17-PW-1-(Estates-and-trusts)-extension-deadline.ics3228
Corporation tax return extension deadline (Non-combined and combined)
11/17/2025 12:00 AM11/17/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-17-Corporation-tax-return-extension-deadline-(Non-combined-and-combined).ics3229
Cigarette, tobacco products return due - monthly
11/17/2025 12:00 AM11/17/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-17-Cigarette-tobacco-products-return-due-monthly.ics3230
Liquor, beer return due - monthly
11/17/2025 12:00 AM11/17/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-17-Liquor-beer-return-due-monthly.ics3231
Supplier, shipper, transporter fuel tax payment due - monthly
11/17/2025 12:00 AM11/17/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-17-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics3232
Blenders fuel tax return due - intermittent monthly
11/17/2025 12:00 AM11/17/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-17-Blenders-fuel-tax-return-due-intermittent-monthly.ics3233
Sales and use tax return due - early monthly
11/20/2025 12:00 AM11/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-20-Sales-and-use-tax-return-due-early-monthly.ics3234
Aviation fuel tax return due - monthly
11/20/2025 12:00 AM11/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-20-Aviation-fuel-tax-return-due-monthly.ics3235
State of Wisconsin holiday - Revenue offices closed
11/27/2025 12:00 AM11/27/2025 11:59 PMYes3236
Sales and use tax return due - monthly
12/1/2025 12:00 AM12/1/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-01-Sales-and-use-tax-return-due-monthly.ics3237
WT-6 deposit report due - semi-monthly, monthly
12/1/2025 12:00 AM12/1/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-01-WT-6-deposit-report-due-semi-monthly-monthly.ics3238
Local expo tax return due - monthly
12/1/2025 12:00 AM12/1/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-01-Local-expo-tax-return-due-monthly.ics3239
Premier resort tax return due - monthly
12/1/2025 12:00 AM12/1/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-01-Premier-resort-tax-return-due-monthly.ics3240
911 fee due - monthly
12/1/2025 12:00 AM12/1/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-01-911-fee-due-monthly.ics3241
Alternate fuel, terminal operator return due - monthly
12/1/2025 12:00 AM12/1/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-01-Alternate-fuel-terminal-operator-return-due-monthly.ics3242
Supplier, shipper, transporter fuel tax return due - monthly
12/1/2025 12:00 AM12/1/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-01-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3243
Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon
12/7/2025 12:00 AM12/7/2025 11:59 PMYes3244
WT-6 deposit report due - semi-monthly
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-WT-6-deposit-report-due-semi-monthly.ics3245
Exempt corporation tax return extension deadline
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-Exempt-corporation-tax-return-extension-deadline.ics3246
Exempt non-employee's trust, IRA, MSA Fiduciary tax return extension deadline
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-Exempt-non-employees-trust-IRA-MSA-Fiduciary-tax-return-extension-deadline.ics3247
Cigarette, tobacco products return due - monthly
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-Cigarette-tobacco-products-return-due-monthly.ics3248
Liquor, beer return due - monthly
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-Liquor-beer-return-due-monthly.ics3253
Supplier, shipper, transporter fuel tax payment due - monthly
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics3254
Blenders fuel tax return due - intermittent monthly
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics3255
4th pass-through withholding estimated payment due
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-4th-pass-through-withholding-estimated-payment-due.ics3256
4th corporation estimated payment due
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-4th-corporation-estimated-payment-due.ics3257
Sales and use tax return due - early monthly
12/22/2025 12:00 AM12/22/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-22-Sales-and-use-tax-return-due-early-monthly.ics3258
Aviation fuel tax return due - monthly
12/22/2025 12:00 AM12/22/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-22-Aviation-fuel-tax-return-due-monthly.ics3259
State of Wisconsin holiday - Revenue offices closed
12/24/2025 12:00 AM12/24/2025 11:59 PMYes3249
State of Wisconsin holiday - Revenue offices closed
12/25/2025 12:00 AM12/25/2025 11:59 PMYes3250
State of Wisconsin holiday - Revenue offices closed
12/31/2025 12:00 AM12/31/2025 11:59 PMYes3251
State of Wisconsin holiday - Revenue offices closed
1/1/2026 12:00 AM1/1/2026 11:59 PMYes3252
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