| 1st quarter dry cleaning fee returns due | | 4/25/2025 12:00 AM | 4/25/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-25-1st-quarter-dry-cleaning-fee-returns-due.ics | 3104 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage 5am - Noon | | 4/27/2025 12:00 AM | 4/27/2025 11:59 PM | | Yes | | 3105 |
| Sales and use tax return due - monthly and quarterly | | 4/30/2025 12:00 AM | 4/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-Sales-and-use-tax-return-due-monthly-and-quarterly.ics | 3106 |
| WT-6 deposit report due - semi-monthly, monthly and quarterly | | 4/30/2025 12:00 AM | 4/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-WT-6-deposit-report-due-semi-monthly-monthly-and-quarterly.ics | 3107 |
| Local expo tax return due - monthly and quarterly | | 4/30/2025 12:00 AM | 4/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-Local-expo-tax-return-due-monthly-and-quarterly.ics | 3108 |
| Premier resort tax return due - monthly and quarterly | | 4/30/2025 12:00 AM | 4/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-Premier-resort-tax-return-due-monthly-and-quarterly.ics | 3110 |
| 911 fee due - monthly | | 4/30/2025 12:00 AM | 4/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-911-fee-due-monthly.ics | 3111 |
| Rental vehicle tax return due - quarterly | | 4/30/2025 12:00 AM | 4/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-Rental-vehicle-tax-return-due-quarterly.ics | 3112 |
| Alternate fuel, terminal operator return due - monthly, quarterly | | 4/30/2025 12:00 AM | 4/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-Alternate-fuel-terminal-operator-return-due-monthly-quarterly.ics | 3113 |
| Supplier, shipper, transporter fuel tax return due - monthly | | 4/30/2025 12:00 AM | 4/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-04-30-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3114 |
| WT-6 deposit report due - semi-monthly | | 5/15/2025 12:00 AM | 5/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-15-WT-6-deposit-report-due-semi-monthly.ics | 3115 |
| Exempt corporation franchise or income tax return due | | 5/15/2025 12:00 AM | 5/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-15-Exempt-corporation-franchise-or-income-tax-return-due.ics | 3116 |
| Exempt non-employees trust, IRA, MSA fiduciary income tax return due | | 5/15/2025 12:00 AM | 5/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-15-Exempt-non-employees-trust-IRA-MSA-fiduciary-income-tax-return-due.ics | 3117 |
| Cigarette-tobacco products return due - monthly | | 5/15/2025 12:00 AM | 5/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-15-Cigarette-tobacco-products-return-due-monthly.ics | 3118 |
| Liquor-beer return due - monthly | | 5/15/2025 12:00 AM | 5/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-15-Liquor-beer-return-due-monthly.ics | 3119 |
| Supplier, shipper, transporter fuel tax payment due - monthly | | 5/15/2025 12:00 AM | 5/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 3120 |
| Blenders fuel tax return due - intermittent monthly | | 5/15/2025 12:00 AM | 5/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-15-Blenders-fuel-tax-return-due-intermittent monthly.ics | 3121 |
| Sales and use tax return due - early monthly | | 5/20/2025 12:00 AM | 5/20/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-20-Sales-and-use-tax-return-due-early-monthly.ics | 3122 |
| Aviation fuel tax return due - monthly | | 5/20/2025 12:00 AM | 5/20/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-05-20-Aviation-fuel-tax-return-due-monthly.ics | 3123 |
| State of Wisconsin holiday - Revenue offices closed | | 5/26/2025 12:00 AM | 5/26/2025 11:59 PM | | Yes | | 3124 |
| Sales and use tax return due - monthly | | 6/2/2025 12:00 AM | 6/2/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-02-Sales-and-use-tax-return-due-monthly.ics | 3125 |
| WT-6 deposit report due - semi-monthly and monthly | | 6/2/2025 12:00 AM | 6/2/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-02-WT-6-deposit-report-due-semi-monthly-and-monthly.ics | 3126 |
| Local expo tax return due - monthly | | 6/2/2025 12:00 AM | 6/2/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-02-Local-expo-tax-return-due-monthly.ics | 3127 |
| Premier resort tax return due - monthly | | 6/2/2025 12:00 AM | 6/2/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-02-Premier-resort-tax-return-due-monthly.ics | 3128 |
| 911 fee due - monthly | | 6/2/2025 12:00 AM | 6/2/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-02-911-fee-due-monthly.ics | 3129 |
| Alternate fuel, terminal operator return due - monthly | | 6/2/2025 12:00 AM | 6/2/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-02-Alternate-fuel-terminal-operator-return-due-monthly.ics | 3130 |
| Supplier, shipper, transporter fuel tax return due - monthly | | 6/2/2025 12:00 AM | 6/2/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-02-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3131 |
| Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon | | 6/8/2025 12:00 AM | 6/8/2025 11:59 PM | | Yes | | 3132 |
| 1-ES 2nd quarter individual income tax estimated payment due | | 6/16/2025 12:00 AM | 6/16/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-1-ES-2nd-quarter-individual-income-tax-estimated-payment-due.ics | 3133 |
| WT-6 deposit report due - semi-monthly | | 6/16/2025 12:00 AM | 6/16/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-WT-6-deposit-report-due-semi-monthly.ics | 3134 |
| Cigarette-tobacco products return due - monthly | | 6/16/2025 12:00 AM | 6/16/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-Cigarette-tobacco-products-return-due-monthly.ics | 3135 |
| Liquor-beer return due - monthly | | 6/16/2025 12:00 AM | 6/16/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-Liquor-beer-return-due-monthly.ics | 3136 |
| Supplier, shipper, transporter fuel tax payment due - monthly | | 6/16/2025 12:00 AM | 6/16/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 3137 |
| Blenders fuel tax return due - intermittent monthly | | 6/16/2025 12:00 AM | 6/16/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 3138 |
| Corp-ES 2nd corporation estimated payment due | | 6/16/2025 12:00 AM | 6/16/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-Corp-ES-2nd-corporation-estimated-payment-due.ics | 3139 |
| PW-ES 2nd pass-through withholding estimated payment due | | 6/16/2025 12:00 AM | 6/16/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-16-PW-ES-2nd-pass-through-withholding-estimated-payment-due.ics | 3140 |
| Sales and use tax return due - early monthly | | 6/20/2025 12:00 AM | 6/20/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-20-Sales-and-use-tax-return-due-early-monthly.ics | 3141 |
| Aviation fuel tax return due - monthly | | 6/20/2025 12:00 AM | 6/20/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-20-Aviation-fuel-tax-return-due-monthly.ics | 3142 |
| Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon | | 6/29/2025 12:00 AM | 6/29/2025 11:59 PM | | Yes | | 3143 |
| WT-6 deposit report due - semi-monthly and monthly | | 6/30/2025 12:00 AM | 6/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-30-WT-6-deposit-report-due-semi-monthly-and-monthly.ics | 3144 |
| Local expo tax return due - monthly | | 6/30/2025 12:00 AM | 6/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-30-Local-expo-tax-return-due-monthly.ics | 3145 |
| Premier resort tax return due - monthly | | 6/30/2025 12:00 AM | 6/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-30-Premier-resort-tax-return-due-monthly.ics | 3146 |
| 911 fee due - monthly | | 6/30/2025 12:00 AM | 6/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-30-911-fee-due-monthly.ics | 3147 |
| Alternate fuel, terminal operator return due - monthly | | 6/30/2025 12:00 AM | 6/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-30-Alternate-fuel-terminal-operator-return-due-monthly.ics | 3148 |
| Supplier, shipper, transporter fuel tax return due - monthly | | 6/30/2025 12:00 AM | 6/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-06-30-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3149 |
| State of Wisconsin holiday - Revenue offices closed | | 7/4/2025 12:00 AM | 7/4/2025 11:59 PM | | Yes | | 3150 |
| WT-6 deposit report due - semi-monthly | | 7/15/2025 12:00 AM | 7/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-15-WT-6-deposit-report-due-semi-monthly.ics | 3151 |
| Cigarette-tobacco products return due - monthly, quarterly | | 7/15/2025 12:00 AM | 7/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-15-Cigarette-tobacco-products-return-due-monthly-quarterly.ics | 3152 |
| Sales and use tax return due - early monthly | | 7/21/2025 12:00 AM | 7/21/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-21-Sales-and-use-tax-return-due-early-monthly.ics | 3153 |
| Aviation fuel tax return due - monthly, quarterly | | 7/21/2025 12:00 AM | 7/21/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-21-Aviation-fuel-tax-return-due-monthly-quarterly.ics | 3154 |
| 2nd quarter dry cleaning fee returns due | | 7/25/2025 12:00 AM | 7/25/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-25-2nd-quarter-dry-cleaning-fee-returns-due.ics | 3155 |
| Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon | | 7/27/2025 12:00 AM | 7/27/2025 11:59 PM | | Yes | | 3156 |
| Sales and use tax return due - monthly and quarterly | | 7/31/2025 12:00 AM | 7/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-Sales-and-use-tax-return-due-monthly-and-quarterly.ics | 3157 |
| WT-6 deposit report due - semi-monthly, monthly and quarterly | | 7/31/2025 12:00 AM | 7/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-WT-6-deposit-report-due-semi-monthly-monthly-and-quarterly.ics | 3158 |
| Local expo tax return due - monthly and quarterly | | 7/31/2025 12:00 AM | 7/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-Local-expo-tax-return-due-monthly-and-quarterly.ics | 3159 |
| Premier resort tax return due - monthly and quarterly | | 7/31/2025 12:00 AM | 7/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-Premier-resort-tax-return-due-monthly-and-quarterly.ics | 3160 |
| 911 fee due - monthly | | 7/31/2025 12:00 AM | 7/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-911-fee-due-monthly.ics | 3161 |
| Rental vehicle tax return due - quarterly | | 7/31/2025 12:00 AM | 7/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-Rental-vehicle-tax-return-due-quarterly.ics | 3162 |
| Alternate fuel, terminal operator return due - monthly, quarterly | | 7/31/2025 12:00 AM | 7/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-Alternate-fuel-terminal-operator-return-due-monthl-quarterly.ics | 3163 |
| Supplier-shipper-transporter fuel tax return due - monthly | | 7/31/2025 12:00 AM | 7/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-07-31-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3164 |
| WT-6 deposit report due - semi-monthly | | 8/15/2025 12:00 AM | 8/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-08-15-WT-6-deposit-report-due-semi-monthly.ics | 3165 |
| Cigarette-tobacco products return due - monthly | | 8/15/2025 12:00 AM | 8/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-08-15-Cigarette-tobacco-products-return-due-monthly.ics | 3166 |
| Liquor-beer return due - monthly | | 8/15/2025 12:00 AM | 8/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-08-15-Liquor-beer-return-due-monthly.ics | 3167 |
| Supplier-shipper-transporter fuel tax payment due - monthly | | 8/15/2025 12:00 AM | 8/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-08-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 3168 |
| Blenders fuel tax return due - intermittent monthly | | 8/15/2025 12:00 AM | 8/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-08-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 3169 |
| Sales and use tax return due - early monthly | | 8/20/2025 12:00 AM | 8/20/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-08-20-Sales-and-use-tax-return-due-early-monthly.ics | 3170 |
| Aviation fuel tax return due - monthly | | 8/20/2025 12:00 AM | 8/20/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-08-20-Aviation-fuel-tax-return-due-monthly.ics | 3171 |
| State of Wisconsin holiday - Revenue offices closed | | 9/1/2025 12:00 AM | 9/1/2025 11:59 PM | | Yes | | 3172 |
| Sales and use tax return due - monthly | | 9/2/2025 12:00 AM | 9/2/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-02-Sales-and-use-tax-return-due-monthly.ics | 3173 |
| WT-6 deposit report due - semi-monthly, monthly | | 9/2/2025 12:00 AM | 9/2/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-02-WT-6-deposit-report-due-semi-monthly-monthly.ics | 3174 |
| Local expo tax return due - monthly | | 9/2/2025 12:00 AM | 9/2/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-02-Local-expo-tax-return-due-monthly.ics | 3175 |
| Premier resort tax return due - monthly | | 9/2/2025 12:00 AM | 9/2/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-02-Premier-resort-tax-return-due-monthly.ics | 3176 |
| 911 fee due - monthly | | 9/2/2025 12:00 AM | 9/2/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-02-911-fee-due-monthly.ics | 3177 |
| Alternate fuel, terminal operator return due - monthly | | 9/2/2025 12:00 AM | 9/2/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-02-Alternate-fuel-terminal-operator-return-due-monthly.ics | 3178 |
| Supplier-shipper-transporter fuel tax return due - monthly | | 9/2/2025 12:00 AM | 9/2/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-02-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3179 |
| Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon | | 9/7/2025 12:00 AM | 9/7/2025 11:59 PM | | Yes | | 3180 |
| 1-ES 3rd quarter individual income tax estimated payment due | | 9/15/2025 12:00 AM | 9/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-1-ES-3rd-quarter-individual-income-tax-estimated-payment-due.ics | 3181 |
| WT-6 deposit report due - semi-monthly | | 9/15/2025 12:00 AM | 9/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-WT-6-deposit-report-due-semi-monthly.ics | 3182 |
| Cigarette, tobacco products return due - monthly | | 9/15/2025 12:00 AM | 9/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-Cigarette-tobacco-products-return-due-monthly.ics | 3183 |
| Liquor, beer return due - monthly | | 9/15/2025 12:00 AM | 9/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-Liquor-beer-return-due-monthly.ics | 3184 |
| Supplier, shipper, transporter fuel tax payment due - monthly | | 9/15/2025 12:00 AM | 9/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 3185 |
| Blenders fuel tax return due - intermittent monthly | | 9/15/2025 12:00 AM | 9/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 3186 |
| PW-ES 3rd pass-through withholding estimated payment due | | 9/15/2025 12:00 AM | 9/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-PW-ES-3rd-pass-through-withholding-estimated-payment-due.ics | 3187 |
| Partnership tax return extension deadline | | 9/15/2025 12:00 AM | 9/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-Partnership-tax-return-extension-deadline.ics | 3188 |
| Corp-ES 3rd corporation estimated payment due | | 9/15/2025 12:00 AM | 9/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-15-Corp-ES-3rd-corporation-estimated-payment-due.ics | 3189 |
| Sales and use tax return due - early monthly | | 9/22/2025 12:00 AM | 9/22/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-22-Sales-and-use-tax-return-due-early-monthly.ics | 3190 |
| Aviation fuel tax return due - monthly | | 9/22/2025 12:00 AM | 9/22/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-22-Aviation-fuel-tax-return-due-monthly.ics | 3191 |
| Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon | | 9/28/2025 12:00 AM | 9/28/2025 11:59 PM | | Yes | | 3192 |
| Sales and use tax return due - monthly | | 9/30/2025 12:00 AM | 9/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-Sales-and-use-tax-return-due-monthly.ics | 3193 |
| Fiduciary tax return extension deadline | | 9/30/2025 12:00 AM | 9/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-Fiduciary-tax-return-extension-deadline.ics | 3194 |
| WT-6 deposit report due - semi-monthly and monthly | | 9/30/2025 12:00 AM | 9/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-WT-6-deposit-report-due-semi-monthly-and-monthly.ics | 3195 |
| Local expo tax return due - monthly | | 9/30/2025 12:00 AM | 9/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-Local-expo-tax-return-due-monthly.ics | 3198 |
| Premier resort tax return due - monthly | | 9/30/2025 12:00 AM | 9/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-Premier-resort-tax-return-due-monthly.ics | 3199 |
| 911 fee due - monthly | | 9/30/2025 12:00 AM | 9/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-911-fee-due-monthly.ics | 3200 |
| Alternate fuel, terminal operator return due - monthly | | 9/30/2025 12:00 AM | 9/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-Alternate-fuel-terminal-operator-return-due-monthly.ics | 3201 |
| Supplier, shipper, transporter fuel tax return due - monthly | | 9/30/2025 12:00 AM | 9/30/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-09-30-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3202 |
| 1CNP extension deadline | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-1CNP-extension-deadline.ics | 3203 |
| 1CNS extension deadline | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-1CNS-extension-deadline.ics | 3204 |
| S Corporation tax return extension deadline | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-S-Corporation-tax-return-extension-deadline.ics | 3205 |
| Exempt employees trust, ISA, MSA Fiduciary tax return extension deadline | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-Exempt-employees-trust-ISA-MSA-Fiduciary-tax-return-extension-deadline.ics | 3206 |
| PW-1 (Partnerships) extension deadline | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-PW-1-(Partnerships)-extension-deadline.ics | 3207 |
| PW-1 (S Corps) extension deadline | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-PW-1-(S Corps)-extension-deadline.ics | 3208 |
| Cigarette, tobacco products return due - monthly, quarterly | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-Cigarette-tobacco-products-return-due-monthly-quarterly.ics | 3209 |
| Liquor, beer return due - monthly | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-Liquor-beer-return-due-monthly.ics | 3210 |
| Supplier, shipper, transporter fuel tax payment due - monthly | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 3211 |
| Blenders fuel tax return due - intermittent monthly | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 3212 |
| Wine direct shippers return due - quarterly | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-15-Wine-direct-shippers-return-due-quarterly.ics | 3213 |
| Sales and use tax return due - early monthly | | 10/20/2025 12:00 AM | 10/20/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-20-Sales-and-use-tax-return-due-early-monthly.ics | 3214 |
| Aviation fuel tax return due - monthly, quarterly | | 10/20/2025 12:00 AM | 10/20/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-20-Aviation-fuel-tax-return-due-monthly-quarterly.ics | 3215 |
| 3rd quarter dry cleaning fee returns due | | 10/25/2025 12:00 AM | 10/25/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-25-3rd-quarter-dry-cleaning-fee-returns-due.ics | 3216 |
| Holder reports due | | 10/31/2025 12:00 AM | 10/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-Holder-reports-due.ics | 3217 |
| Sales and use tax return due - monthly and quarterly | | 10/31/2025 12:00 AM | 10/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-Sales-and-use-tax-return-due-monthly-and-quarterly.ics | 3218 |
| WT-6 deposit report due - semi-monthly, monthly and quarterly | | 10/31/2025 12:00 AM | 10/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-WT-6-deposit-report-due-semi-monthly-monthly-and-quarterly.ics | 3219 |
| Local expo tax return due - monthly and quarterly | | 10/31/2025 12:00 AM | 10/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-Local-expo-tax-return-due-monthly-and-quarterly.ics | 3220 |
| Premier resort tax return due - monthly and quarterly | | 10/31/2025 12:00 AM | 10/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-Premier-resort-tax-return-due-monthly-and-quarterly.ics | 3221 |
| 911 fee due - monthly | | 10/31/2025 12:00 AM | 10/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-911-fee-due-monthly.ics | 3222 |
| Rental vehicle tax return due - quarterly | | 10/31/2025 12:00 AM | 10/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-Rental-vehicle-tax-return-due-quarterly.ics | 3223 |
| Alternate fuel, terminal operator return due - monthly, quarterly | | 10/31/2025 12:00 AM | 10/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-Alternate-fuel-terminal-operator-return-due-monthly-quarterly.ics | 3224 |
| Supplier, shipper, transporter fuel tax return due - monthly | | 10/31/2025 12:00 AM | 10/31/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-10-31-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3225 |
| Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon | | 11/2/2025 12:00 AM | 11/2/2025 11:59 PM | | Yes | | 3226 |
| WT-6 deposit report due - semi-monthly | | 11/17/2025 12:00 AM | 11/17/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-17-WT-6-deposit-report-due-semi-monthly.ics | 3227 |
| PW-1 (Estates and trusts) extension deadline | | 11/17/2025 12:00 AM | 11/17/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-17-PW-1-(Estates-and-trusts)-extension-deadline.ics | 3228 |
| Corporation tax return extension deadline (Non-combined and combined) | | 11/17/2025 12:00 AM | 11/17/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-17-Corporation-tax-return-extension-deadline-(Non-combined-and-combined).ics | 3229 |
| Cigarette, tobacco products return due - monthly | | 11/17/2025 12:00 AM | 11/17/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-17-Cigarette-tobacco-products-return-due-monthly.ics | 3230 |
| Liquor, beer return due - monthly | | 11/17/2025 12:00 AM | 11/17/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-17-Liquor-beer-return-due-monthly.ics | 3231 |
| Supplier, shipper, transporter fuel tax payment due - monthly | | 11/17/2025 12:00 AM | 11/17/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-17-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 3232 |
| Blenders fuel tax return due - intermittent monthly | | 11/17/2025 12:00 AM | 11/17/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-17-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 3233 |
| Sales and use tax return due - early monthly | | 11/20/2025 12:00 AM | 11/20/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-20-Sales-and-use-tax-return-due-early-monthly.ics | 3234 |
| Aviation fuel tax return due - monthly | | 11/20/2025 12:00 AM | 11/20/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-11-20-Aviation-fuel-tax-return-due-monthly.ics | 3235 |
| State of Wisconsin holiday - Revenue offices closed | | 11/27/2025 12:00 AM | 11/27/2025 11:59 PM | | Yes | | 3236 |
| Sales and use tax return due - monthly | | 12/1/2025 12:00 AM | 12/1/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-01-Sales-and-use-tax-return-due-monthly.ics | 3237 |
| WT-6 deposit report due - semi-monthly, monthly | | 12/1/2025 12:00 AM | 12/1/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-01-WT-6-deposit-report-due-semi-monthly-monthly.ics | 3238 |
| Local expo tax return due - monthly | | 12/1/2025 12:00 AM | 12/1/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-01-Local-expo-tax-return-due-monthly.ics | 3239 |
| Premier resort tax return due - monthly | | 12/1/2025 12:00 AM | 12/1/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-01-Premier-resort-tax-return-due-monthly.ics | 3240 |
| 911 fee due - monthly | | 12/1/2025 12:00 AM | 12/1/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-01-911-fee-due-monthly.ics | 3241 |
| Alternate fuel, terminal operator return due - monthly | | 12/1/2025 12:00 AM | 12/1/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-01-Alternate-fuel-terminal-operator-return-due-monthly.ics | 3242 |
| Supplier, shipper, transporter fuel tax return due - monthly | | 12/1/2025 12:00 AM | 12/1/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-01-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3243 |
| Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon | | 12/7/2025 12:00 AM | 12/7/2025 11:59 PM | | Yes | | 3244 |
| WT-6 deposit report due - semi-monthly | | 12/15/2025 12:00 AM | 12/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-WT-6-deposit-report-due-semi-monthly.ics | 3245 |
| Exempt corporation tax return extension deadline | | 12/15/2025 12:00 AM | 12/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-Exempt-corporation-tax-return-extension-deadline.ics | 3246 |
| Exempt non-employee's trust, IRA, MSA Fiduciary tax return extension deadline | | 12/15/2025 12:00 AM | 12/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-Exempt-non-employees-trust-IRA-MSA-Fiduciary-tax-return-extension-deadline.ics | 3247 |
| Cigarette, tobacco products return due - monthly | | 12/15/2025 12:00 AM | 12/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-Cigarette-tobacco-products-return-due-monthly.ics | 3248 |
| Liquor, beer return due - monthly | | 12/15/2025 12:00 AM | 12/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-Liquor-beer-return-due-monthly.ics | 3253 |
| Supplier, shipper, transporter fuel tax payment due - monthly | | 12/15/2025 12:00 AM | 12/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 3254 |
| Blenders fuel tax return due - intermittent monthly | | 12/15/2025 12:00 AM | 12/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 3255 |
| 4th pass-through withholding estimated payment due | | 12/15/2025 12:00 AM | 12/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-4th-pass-through-withholding-estimated-payment-due.ics | 3256 |
| 4th corporation estimated payment due | | 12/15/2025 12:00 AM | 12/15/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-15-4th-corporation-estimated-payment-due.ics | 3257 |
| Sales and use tax return due - early monthly | | 12/22/2025 12:00 AM | 12/22/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-22-Sales-and-use-tax-return-due-early-monthly.ics | 3258 |
| Aviation fuel tax return due - monthly | | 12/22/2025 12:00 AM | 12/22/2025 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2025-12-22-Aviation-fuel-tax-return-due-monthly.ics | 3259 |
| State of Wisconsin holiday - Revenue offices closed | | 12/24/2025 12:00 AM | 12/24/2025 11:59 PM | | Yes | | 3249 |
| State of Wisconsin holiday - Revenue offices closed | | 12/25/2025 12:00 AM | 12/25/2025 11:59 PM | | Yes | | 3250 |
| State of Wisconsin holiday - Revenue offices closed | | 12/31/2025 12:00 AM | 12/31/2025 11:59 PM | | Yes | | 3251 |
| State of Wisconsin holiday - Revenue offices closed | | 1/1/2026 12:00 AM | 1/1/2026 11:59 PM | | Yes | | 3252 |