| | | 5/20/2025 12:00 AM | 5/20/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-05-20-Sales-and-use-tax-return-due-early-monthly.ics | 3125 | 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/Businesses/2025-05-20-Aviation-fuel-tax-return-due-monthly.ics | 3126 | Aviation fuel tax return due - monthly |
| | | 5/26/2025 12:00 AM | 5/26/2025 11:59 PM | | Yes |  | | 3127 | State of Wisconsin holiday - Revenue offices closed |
| | | 6/2/2025 12:00 AM | 6/2/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-02-Sales-and-use-tax-return-due-monthly.ics | 3128 | 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/Businesses/2025-06-02-WT-6-deposit-report-due-semi-monthly-and-monthly.ics | 3129 | 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/Businesses/2025-06-02-Local-expo-tax-return-due-monthly.ics | 3130 | 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/Businesses/2025-06-02-Premier-resort-tax-return-due-monthly.ics | 3131 | 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/Businesses/2025-06-02-911-fee-due-monthly.ics | 3132 | 911 fee due - monthly |
| | | 6/2/2025 12:00 AM | 6/2/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-02-Alternate-fuel-terminal-operator-return-due-monthly.ics | 3133 | 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/Businesses/2025-06-02-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3134 | Supplier, shipper, transporter fuel tax return due - monthly |
| | | 6/8/2025 12:00 AM | 6/8/2025 11:59 PM | | Yes |  | | 3135 | Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon |
| | | 6/16/2025 12:00 AM | 6/16/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-16-WT-6-deposit-report-due-semi-monthly.ics | 3137 | 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/Businesses/2025-06-16-Cigarette-tobacco-products-return-due-monthly.ics | 3138 | 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/Businesses/2025-06-16-Liquor-beer-return-due-monthly.ics | 3139 | Liquor-beer return due - monthly |
| | | 6/16/2025 12:00 AM | 6/16/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-16-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 3140 | 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/Businesses/2025-06-16-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 3141 | 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/Businesses/2025-06-16-Corp-ES-2nd-corporation-estimated-payment-due.ics | 3142 | 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/Businesses/2025-06-16-PW-ES-2nd-pass-through-withholding-estimated-payment-due.ics | 3143 | PW-ES 2nd pass-through withholding estimated payment due |
| | | 6/20/2025 12:00 AM | 6/20/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-20-Sales-and-use-tax-return-due-early-monthly.ics | 3144 | 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/Businesses/2025-06-20-Aviation-fuel-tax-return-due-monthly.ics | 3145 | Aviation fuel tax return due - monthly |
| | | 6/29/2025 12:00 AM | 6/29/2025 11:59 PM | | Yes |  | | 3136 | Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon |
| | | 6/30/2025 12:00 AM | 6/30/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-30-Sales-and-use-tax-return-due-monthly.ics | 3146 | Sales and use tax return due - monthly |
| | | 6/30/2025 12:00 AM | 6/30/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-30-WT-6-deposit-report-due-semi-monthly-and-monthly.ics | 3147 | 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/Businesses/2025-06-30-Local-expo-tax-return-due-monthly.ics | 3148 | 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/Businesses/2025-06-30-Premier-resort-tax-return-due-monthly.ics | 3149 | 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/Businesses/2025-06-30-911-fee-due-monthly.ics | 3150 | 911 fee due - monthly |
| | | 6/30/2025 12:00 AM | 6/30/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-30-Alternate-fuel-terminal-operator-return-due-monthly.ics | 3151 | 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/Businesses/2025-06-30-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3152 | Supplier, shipper, transporter fuel tax return due - monthly |
| | | 7/4/2025 12:00 AM | 7/4/2025 11:59 PM | | Yes |  | | 3153 | State of Wisconsin holiday - Revenue offices closed |
| | | 7/15/2025 12:00 AM | 7/15/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-15-WT-6-deposit-report-due-semi-monthly.ics | 3154 | 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/Businesses/2025-07-15-Cigarette-tobacco-products-return-due-monthly-quarterly.ics | 3155 | Cigarette-tobacco products return due - monthly, quarterly |
| | | 7/21/2025 12:00 AM | 7/21/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-21-Sales-and-use-tax-return-due-early-monthly.ics | 3156 | 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/Businesses/2025-07-21-Aviation-fuel-tax-return-due-monthly-quarterly.ics | 3157 | Aviation fuel tax return due - monthly, quarterly |
| | | 7/25/2025 12:00 AM | 7/25/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-25-2nd-quarter-dry-cleaning-fee-returns-due.ics | 3158 | 2nd quarter dry cleaning fee returns due |
| | | 7/27/2025 12:00 AM | 7/27/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-27-Wisconsin-e-File-Wisconsin-Telefile-and-My-Tax-Account-file-outage-5am-noon.ics | 3159 | Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon |
| | | 7/31/2025 12:00 AM | 7/31/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-31-Sales-and-use-tax-return-due-monthly-and-quarterly.ics | 3160 | 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/Businesses/2025-07-31-WT-6-deposit-report-due-semi-monthly-monthly-and-quarterly.ics | 3161 | 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/Businesses/2025-07-31-Local-expo-tax-return-due-monthly-and-quarterly.ics | 3162 | 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/Businesses/2025-07-31-Premier-resort-tax-return-due-monthly-and-quarterly.ics | 3163 | 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/Businesses/2025-07-31-911-fee-due-monthly.ics | 3164 | 911 fee due - monthly |
| | | 7/31/2025 12:00 AM | 7/31/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-31-Rental-vehicle-tax-return-due-quarterly.ics | 3165 | 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/Businesses/2025-07-31-Alternate-fuel-terminal-operator-return-due-monthly-quarterly.ics | 3166 | 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/Businesses/2025-07-31-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3167 | Supplier-shipper-transporter fuel tax return due - monthly |
| | | 8/15/2025 12:00 AM | 8/15/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-08-15-WT-6-deposit-report-due-semi-monthly.ics | 3168 | 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/Businesses/2025-08-15-Cigarette-tobacco-products-return-due-monthly.ics | 3169 | 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/Businesses/2025-08-15-Liquor-beer-return-due-monthly.ics | 3170 | Liquor-beer return due - monthly |
| | | 8/15/2025 12:00 AM | 8/15/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-08-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 3171 | 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/Businesses/2025-08-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 3172 | Blenders fuel tax return due - intermittent monthly |
| | | 8/20/2025 12:00 AM | 8/20/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-08-20-Sales-and-use-tax-return-due-early-monthly.ics | 3173 | 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/Businesses/2025-08-20-Aviation-fuel-tax-return-due-monthly.ics | 3174 | Aviation fuel tax return due - monthly |
| | | 9/1/2025 12:00 AM | 9/1/2025 11:59 PM | | Yes |  | | 3175 | State of Wisconsin holiday - Revenue offices closed |
| | | 9/2/2025 12:00 AM | 9/2/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-02-Sales-and-use-tax-return-due-monthly.ics | 3176 | 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/Businesses/2025-09-02-WT-6-deposit-report-due-semi-monthly-monthly.ics | 3177 | 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/Businesses/2025-09-02-Local-expo-tax-return-due-monthly.ics | 3178 | 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/Businesses/2025-09-02-Premier-resort-tax-return-due-monthly.ics | 3179 | 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/Businesses/2025-09-02-911-fee-due-monthly.ics | 3180 | 911 fee due - monthly |
| | | 9/2/2025 12:00 AM | 9/2/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-02-Alternate-fuel-terminal-operator-return-due-monthly.ics | 3181 | 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/Businesses/2025-09-02-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3182 | Supplier-shipper-transporter fuel tax return due - monthly |
| | | 9/7/2025 12:00 AM | 9/7/2025 11:59 PM | | Yes |  | | 3183 | Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon |
| | | 9/15/2025 12:00 AM | 9/15/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-15-WT-6-deposit-report-due-semi-monthly.ics | 3184 | 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/Businesses/2025-09-15-Cigarette-tobacco-products-return-due-monthly.ics | 3185 | 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/Businesses/2025-09-15-Liquor-beer-return-due-monthly.ics | 3186 | Liquor, beer return due - monthly |
| | | 9/15/2025 12:00 AM | 9/15/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 3187 | 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/Businesses/2025-09-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 3188 | 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/Businesses/2025-09-15-PW-ES-3rd-pass-through-withholding-estimated-payment-due.ics | 3189 | 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/Businesses/2025-09-15-Partnership-tax-return-extension-deadline.ics | 3190 | Partnership tax return extension deadline |
| | | 9/15/2025 12:00 AM | 9/15/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-15-Corp-ES-3rd-corporation-estimated-payment-due.ics | 3191 | Corp-ES 3rd corporation estimated payment due |
| | | 9/22/2025 12:00 AM | 9/22/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-22-Sales-and-use-tax-return-due-early-monthly.ics | 3192 | 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/Businesses/2025-09-22-Aviation-fuel-tax-return-due-monthly.ics | 3193 | Aviation fuel tax return due - monthly |
| | | 9/28/2025 12:00 AM | 9/28/2025 11:59 PM | | Yes |  | | 3194 | Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon |
| | | 9/30/2025 12:00 AM | 9/30/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-30-Sales-and-use-tax-return-due-monthly.ics | 3195 | 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/Businesses/2025-09-30-Fiduciary-tax-return-extension-deadline.ics | 3196 | Fiduciary tax return extension deadline |
| | | 9/30/2025 12:00 AM | 9/30/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-30-WT-6-deposit-report-due-semi-monthly-and-monthly.ics | 3197 | 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/Businesses/2025-09-30-Local-expo-tax-return-due-monthly.ics | 3198 | 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/Businesses/2025-09-30-Premier-resort-tax-return-due-monthly.ics | 3199 | 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/Businesses/2025-09-30-911-fee-due-monthly.ics | 3200 | 911 fee due - monthly |
| | | 9/30/2025 12:00 AM | 9/30/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-30-Alternate-fuel-terminal-operator-return-due-monthly.ics | 3201 | 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/Businesses/2025-09-30-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3202 | Supplier, shipper, transporter fuel tax return due - monthly |
| | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-1CNP-extension-deadline.ics | 3203 | 1CNP extension deadline |
| | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-1CNS-extension-deadline.ics | 3204 | 1CNS extension deadline |
| | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-S-Corporation-tax-return-extension-deadline.ics | 3205 | 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/Businesses/2025-10-15-Exempt-employees-trust-ISA-MSA-Fiduciary-tax-return-extension-deadline.ics | 3206 | 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/Businesses/2025-10-15-PW-1-(Partnerships)-extension-deadline.ics | 3207 | PW-1 (Partnerships) extension deadline |
| | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-PW-1-(S-Corps)-extension-deadline.ics | 3208 | 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/Businesses/2025-10-15-Cigarette-tobacco-products-return-due-monthly-quarterly.ics | 3209 | 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/Businesses/2025-10-15-Liquor-beer-return-due-monthly.ics | 3211 | Liquor, beer return due - monthly |
| | | 10/15/2025 12:00 AM | 10/15/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 3212 | 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/Businesses/2025-10-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 3213 | 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/Businesses/2025-10-15-Wine-direct-shippers-return-due-quarterly.ics | 3214 | Wine direct shippers return due - quarterly |
| | | 10/20/2025 12:00 AM | 10/20/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-20-Sales-and-use-tax-return-due-early-monthly.ics | 3215 | 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/Businesses/2025-10-20-Aviation-fuel-tax-return-due-monthly-quarterly.ics | 3216 | Aviation fuel tax return due - monthly, quarterly |
| | | 10/27/2025 12:00 AM | 10/27/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-27-3rd-quarter-dry-cleaning-fee-returns-due.ics | 3217 | 3rd quarter dry cleaning fee returns due |
| | | 10/31/2025 12:00 AM | 10/31/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-31-Sales-and-use-tax-return-due-monthly-and-quarterly.ics | 3218 | 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/Businesses/2025-10-31-WT-6-deposit-report-due-semi-monthly-monthly-and-quarterly.ics | 3219 | 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/Businesses/2025-10-31-Local-expo-tax-return-due-monthly-and-quarterly.ics | 3220 | 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/Businesses/2025-10-31-Premier-resort-tax-return-due-monthly-and-quarterly.ics | 3221 | 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/Businesses/2025-10-31-911-fee-due-monthly.ics | 3222 | 911 fee due - monthly |
| | | 10/31/2025 12:00 AM | 10/31/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-31-Rental-vehicle-tax-return-due-quarterly.ics | 3223 | 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/Businesses/2025-10-31-Alternate-fuel-terminal-operator-return-due-monthly-quarterly.ics | 3224 | 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/Businesses/2025-10-31-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3225 | Supplier, shipper, transporter fuel tax return due - monthly |
| | | 11/2/2025 12:00 AM | 11/2/2025 11:59 PM | | Yes |  | | 3226 | My Tax Account, Wisconsin Telefile and Wis e-File system file outage 5am-noon |
| | | 11/17/2025 12:00 AM | 11/17/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-11-17-WT-6-deposit-report-due-semi-monthly.ics | 3227 | 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/Businesses/2025-11-17-PW-1-(Estates-and-trusts)-extension-deadline.ics | 3228 | 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/Businesses/2025-11-17-Corporation-tax-return-extension-deadline-(Non-combined-and-combined).ics | 3230 | 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/Businesses/2025-11-17-Cigarette-tobacco-products-return-due-monthly.ics | 3231 | 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/Businesses/2025-11-17-Liquor-beer-return-due-monthly.ics | 3232 | Liquor, beer return due - monthly |
| | | 11/17/2025 12:00 AM | 11/17/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-11-17-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 3233 | 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/Businesses/2025-11-17-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 3234 | Blenders fuel tax return due - intermittent monthly |
| | | 11/20/2025 12:00 AM | 11/20/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-11-20-Sales-and-use-tax-return-due-early-monthly.ics | 3235 | 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/Businesses/2025-11-20-Aviation-fuel-tax-return-due-monthly.ics | 3236 | Aviation fuel tax return due - monthly |
| | | 11/27/2025 12:00 AM | 11/27/2025 11:59 PM | | Yes |  | | 3237 | State of Wisconsin holiday - Revenue offices closed |
| | | 12/1/2025 12:00 AM | 12/1/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-01-Sales-and-use-tax-return-due-monthly.ics | 3238 | 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/Businesses/2025-12-01-WT-6-deposit-report-due-semi-monthly-monthly.ics | 3239 | 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/Businesses/2025-12-01-Local-expo-tax-return-due-monthly.ics | 3240 | 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/Businesses/2025-12-01-Premier-resort-tax-return-due-monthly.ics | 3241 | 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/Businesses/2025-12-01-911-fee-due-monthly.ics | 3242 | 911 fee due - monthly |
| | | 12/1/2025 12:00 AM | 12/1/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-01-Alternate-fuel-terminal-operator-return-due-monthly.ics | 3243 | 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/Businesses/2025-12-01-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 3244 | Supplier, shipper, transporter fuel tax return due - monthly |
| | | 12/7/2025 12:00 AM | 12/7/2025 11:59 PM | | Yes |  | | 3245 | Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon |
| | | 12/15/2025 12:00 AM | 12/15/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-15-WT-6-deposit-report-due-semi-monthly.ics | 3246 | 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/Businesses/2025-12-15-Exempt-corporation-tax-return-extension-deadline.ics | 3247 | 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/Businesses/2025-12-15-Exempt-non-employees-trust-IRA-MSA-Fiduciary-tax-return-extension-deadline.ics | 3249 | Exempt non-employees 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/Businesses/2025-12-15-Cigarette-tobacco-products-return-due-monthly.ics | 3250 | 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/Businesses/2025-12-15-Liquor-beer-return-due-monthly.ics | 3251 | Liquor, beer return due - monthly |
| | | 12/15/2025 12:00 AM | 12/15/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 3252 | 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/Businesses/2025-12-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 3253 | 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/Businesses/2025-12-15-4th-pass-through-withholding-estimated-payment-due.ics | 3254 | 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/Businesses/2025-12-15-4th-corporation-estimated-payment-due.ics | 3255 | 4th corporation estimated payment due |
| | | 12/22/2025 12:00 AM | 12/22/2025 11:59 PM | | Yes |  | https://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-22-Sales-and-use-tax-return-due-early-monthly.ics | 3256 | 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/Businesses/2025-12-22-Aviation-fuel-tax-return-due-monthly.ics | 3257 | Aviation fuel tax return due - monthly |
| | | 12/24/2025 12:00 AM | 12/24/2025 11:59 PM | | Yes |  | | 3258 | State of Wisconsin holiday - Revenue offices closed |
| | | 12/25/2025 12:00 AM | 12/25/2025 11:59 PM | | Yes |  | | 3259 | State of Wisconsin holiday - Revenue offices closed |
| | | 12/31/2025 12:00 AM | 12/31/2025 11:59 PM | | Yes |  | | 3260 | State of Wisconsin holiday - Revenue offices closed |
| | | 1/1/2026 12:00 AM | 1/1/2026 11:59 PM | | Yes |  | | 3261 | State of Wisconsin holiday - Revenue offices closed |