Businesses Calendar

Date
  
Title
  
Description
Start Date
  
End Time
  
Location
  
All Day Event
  
  
ICS Download File
  
ID
  
Title
  
  
5/20/2025 12:00 AM5/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-05-20-Sales-and-use-tax-return-due-early-monthly.ics3125Sales and use tax return due - early monthly
  
5/20/2025 12:00 AM5/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-05-20-Aviation-fuel-tax-return-due-monthly.ics3126Aviation fuel tax return due - monthly
  
5/26/2025 12:00 AM5/26/2025 11:59 PMYes3127State of Wisconsin holiday - Revenue offices closed
  
6/2/2025 12:00 AM6/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-02-Sales-and-use-tax-return-due-monthly.ics3128Sales and use tax return due - monthly
  
6/2/2025 12:00 AM6/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-02-WT-6-deposit-report-due-semi-monthly-and-monthly.ics3129WT-6 deposit report due - semi-monthly and monthly
  
6/2/2025 12:00 AM6/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-02-Local-expo-tax-return-due-monthly.ics3130Local expo tax return due - monthly
  
6/2/2025 12:00 AM6/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-02-Premier-resort-tax-return-due-monthly.ics3131Premier resort tax return due - monthly
  
6/2/2025 12:00 AM6/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-02-911-fee-due-monthly.ics3132911 fee due - monthly
  
6/2/2025 12:00 AM6/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-02-Alternate-fuel-terminal-operator-return-due-monthly.ics3133Alternate fuel, terminal operator return due - monthly
  
6/2/2025 12:00 AM6/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-02-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3134Supplier, shipper, transporter fuel tax return due - monthly
  
6/8/2025 12:00 AM6/8/2025 11:59 PMYes3135Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon
  
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-16-WT-6-deposit-report-due-semi-monthly.ics3137WT-6 deposit report due - semi-monthly
  
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-16-Cigarette-tobacco-products-return-due-monthly.ics3138Cigarette-tobacco products return due - monthly
  
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-16-Liquor-beer-return-due-monthly.ics3139Liquor-beer return due - monthly
  
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-16-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics3140Supplier, shipper, transporter fuel tax payment due - monthly
  
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-16-Blenders-fuel-tax-return-due-intermittent-monthly.ics3141Blenders fuel tax return due - intermittent monthly
  
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-16-Corp-ES-2nd-corporation-estimated-payment-due.ics3142Corp-ES 2nd corporation estimated payment due
  
6/16/2025 12:00 AM6/16/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-16-PW-ES-2nd-pass-through-withholding-estimated-payment-due.ics3143PW-ES 2nd pass-through withholding estimated payment due
  
6/20/2025 12:00 AM6/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-20-Sales-and-use-tax-return-due-early-monthly.ics3144Sales and use tax return due - early monthly
  
6/20/2025 12:00 AM6/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-20-Aviation-fuel-tax-return-due-monthly.ics3145Aviation fuel tax return due - monthly
  
6/29/2025 12:00 AM6/29/2025 11:59 PMYes3136Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon
  
6/30/2025 12:00 AM6/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-30-Sales-and-use-tax-return-due-monthly.ics3146Sales and use tax return due - monthly
  
6/30/2025 12:00 AM6/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-30-WT-6-deposit-report-due-semi-monthly-and-monthly.ics3147WT-6 deposit report due - semi-monthly and monthly
  
6/30/2025 12:00 AM6/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-30-Local-expo-tax-return-due-monthly.ics3148Local expo tax return due - monthly
  
6/30/2025 12:00 AM6/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-30-Premier-resort-tax-return-due-monthly.ics3149Premier resort tax return due - monthly
  
6/30/2025 12:00 AM6/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-30-911-fee-due-monthly.ics3150911 fee due - monthly
  
6/30/2025 12:00 AM6/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-30-Alternate-fuel-terminal-operator-return-due-monthly.ics3151Alternate fuel, terminal operator return due - monthly
  
6/30/2025 12:00 AM6/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-06-30-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3152Supplier, shipper, transporter fuel tax return due - monthly
  
7/4/2025 12:00 AM7/4/2025 11:59 PMYes3153State of Wisconsin holiday - Revenue offices closed
  
7/15/2025 12:00 AM7/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-15-WT-6-deposit-report-due-semi-monthly.ics3154WT-6 deposit report due - semi-monthly
  
7/15/2025 12:00 AM7/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-15-Cigarette-tobacco-products-return-due-monthly-quarterly.ics3155Cigarette-tobacco products return due - monthly, quarterly
  
7/21/2025 12:00 AM7/21/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-21-Sales-and-use-tax-return-due-early-monthly.ics3156Sales and use tax return due - early monthly
  
7/21/2025 12:00 AM7/21/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-21-Aviation-fuel-tax-return-due-monthly-quarterly.ics3157Aviation fuel tax return due - monthly, quarterly
  
7/25/2025 12:00 AM7/25/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-25-2nd-quarter-dry-cleaning-fee-returns-due.ics31582nd quarter dry cleaning fee returns due
  
7/27/2025 12:00 AM7/27/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-27-Wisconsin-e-File-Wisconsin-Telefile-and-My-Tax-Account-file-outage-5am-noon.ics3159Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon
  
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-31-Sales-and-use-tax-return-due-monthly-and-quarterly.ics3160Sales and use tax return due - monthly and quarterly
  
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-31-WT-6-deposit-report-due-semi-monthly-monthly-and-quarterly.ics3161WT-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/Businesses/2025-07-31-Local-expo-tax-return-due-monthly-and-quarterly.ics3162Local expo tax return due - monthly and quarterly
  
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-31-Premier-resort-tax-return-due-monthly-and-quarterly.ics3163Premier resort tax return due - monthly and quarterly
  
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-31-911-fee-due-monthly.ics3164911 fee due - monthly
  
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-31-Rental-vehicle-tax-return-due-quarterly.ics3165Rental vehicle tax return due - quarterly
  
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-31-Alternate-fuel-terminal-operator-return-due-monthly-quarterly.ics3166Alternate fuel, terminal operator return due - monthly, quarterly
  
7/31/2025 12:00 AM7/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-07-31-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3167Supplier-shipper-transporter fuel tax return due - monthly
  
8/15/2025 12:00 AM8/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-08-15-WT-6-deposit-report-due-semi-monthly.ics3168WT-6 deposit report due - semi-monthly
  
8/15/2025 12:00 AM8/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-08-15-Cigarette-tobacco-products-return-due-monthly.ics3169Cigarette-tobacco products return due - monthly
  
8/15/2025 12:00 AM8/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-08-15-Liquor-beer-return-due-monthly.ics3170Liquor-beer return due - monthly
  
8/15/2025 12:00 AM8/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-08-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics3171Supplier-shipper-transporter fuel tax payment due - monthly
  
8/15/2025 12:00 AM8/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-08-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics3172Blenders fuel tax return due - intermittent monthly
  
8/20/2025 12:00 AM8/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-08-20-Sales-and-use-tax-return-due-early-monthly.ics3173Sales and use tax return due - early monthly
  
8/20/2025 12:00 AM8/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-08-20-Aviation-fuel-tax-return-due-monthly.ics3174Aviation fuel tax return due - monthly
  
9/1/2025 12:00 AM9/1/2025 11:59 PMYes3175State of Wisconsin holiday - Revenue offices closed
  
9/2/2025 12:00 AM9/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-02-Sales-and-use-tax-return-due-monthly.ics3176Sales and use tax return due - monthly
  
9/2/2025 12:00 AM9/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-02-WT-6-deposit-report-due-semi-monthly-monthly.ics3177WT-6 deposit report due - semi-monthly, monthly
  
9/2/2025 12:00 AM9/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-02-Local-expo-tax-return-due-monthly.ics3178Local expo tax return due - monthly
  
9/2/2025 12:00 AM9/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-02-Premier-resort-tax-return-due-monthly.ics3179Premier resort tax return due - monthly
  
9/2/2025 12:00 AM9/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-02-911-fee-due-monthly.ics3180911 fee due - monthly
  
9/2/2025 12:00 AM9/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-02-Alternate-fuel-terminal-operator-return-due-monthly.ics3181Alternate fuel, terminal operator return due - monthly
  
9/2/2025 12:00 AM9/2/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-02-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3182Supplier-shipper-transporter fuel tax return due - monthly
  
9/7/2025 12:00 AM9/7/2025 11:59 PMYes3183Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon
  
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-15-WT-6-deposit-report-due-semi-monthly.ics3184WT-6 deposit report due - semi-monthly
  
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-15-Cigarette-tobacco-products-return-due-monthly.ics3185Cigarette, tobacco products return due - monthly
  
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-15-Liquor-beer-return-due-monthly.ics3186Liquor, beer return due - monthly
  
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics3187Supplier, shipper, transporter fuel tax payment due - monthly
  
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics3188Blenders fuel tax return due - intermittent monthly
  
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-15-PW-ES-3rd-pass-through-withholding-estimated-payment-due.ics3189PW-ES 3rd pass-through withholding estimated payment due
  
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-15-Partnership-tax-return-extension-deadline.ics3190Partnership tax return extension deadline
  
9/15/2025 12:00 AM9/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-15-Corp-ES-3rd-corporation-estimated-payment-due.ics3191Corp-ES 3rd corporation estimated payment due
  
9/22/2025 12:00 AM9/22/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-22-Sales-and-use-tax-return-due-early-monthly.ics3192Sales and use tax return due - early monthly
  
9/22/2025 12:00 AM9/22/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-22-Aviation-fuel-tax-return-due-monthly.ics3193Aviation fuel tax return due - monthly
  
9/28/2025 12:00 AM9/28/2025 11:59 PMYes3194Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon
  
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-30-Sales-and-use-tax-return-due-monthly.ics3195Sales and use tax return due - monthly
  
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-30-Fiduciary-tax-return-extension-deadline.ics3196Fiduciary tax return extension deadline
  
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-30-WT-6-deposit-report-due-semi-monthly-and-monthly.ics3197WT-6 deposit report due - semi-monthly and monthly
  
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-30-Local-expo-tax-return-due-monthly.ics3198Local expo tax return due - monthly
  
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-30-Premier-resort-tax-return-due-monthly.ics3199Premier resort tax return due - monthly
  
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-30-911-fee-due-monthly.ics3200911 fee due - monthly
  
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-30-Alternate-fuel-terminal-operator-return-due-monthly.ics3201Alternate fuel, terminal operator return due - monthly
  
9/30/2025 12:00 AM9/30/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-09-30-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3202Supplier, shipper, transporter fuel tax return due - monthly
  
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-1CNP-extension-deadline.ics32031CNP extension deadline
  
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-1CNS-extension-deadline.ics32041CNS extension deadline
  
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-S-Corporation-tax-return-extension-deadline.ics3205S Corporation tax return extension deadline
  
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-Exempt-employees-trust-ISA-MSA-Fiduciary-tax-return-extension-deadline.ics3206Exempt 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/Businesses/2025-10-15-PW-1-(Partnerships)-extension-deadline.ics3207PW-1 (Partnerships) extension deadline
  
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-PW-1-(S-Corps)-extension-deadline.ics3208PW-1 (S Corps) extension deadline
  
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-Cigarette-tobacco-products-return-due-monthly-quarterly.ics3209Cigarette, tobacco products return due - monthly, quarterly
  
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-Liquor-beer-return-due-monthly.ics3211Liquor, beer return due - monthly
  
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics3212Supplier, shipper, transporter fuel tax payment due - monthly
  
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics3213Blenders fuel tax return due - intermittent monthly
  
10/15/2025 12:00 AM10/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-15-Wine-direct-shippers-return-due-quarterly.ics3214Wine direct shippers return due - quarterly
  
10/20/2025 12:00 AM10/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-20-Sales-and-use-tax-return-due-early-monthly.ics3215Sales and use tax return due - early monthly
  
10/20/2025 12:00 AM10/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-20-Aviation-fuel-tax-return-due-monthly-quarterly.ics3216Aviation fuel tax return due - monthly, quarterly
  
10/27/2025 12:00 AM10/27/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-27-3rd-quarter-dry-cleaning-fee-returns-due.ics32173rd quarter dry cleaning fee returns due
  
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-31-Sales-and-use-tax-return-due-monthly-and-quarterly.ics3218Sales and use tax return due - monthly and quarterly
  
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-31-WT-6-deposit-report-due-semi-monthly-monthly-and-quarterly.ics3219WT-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/Businesses/2025-10-31-Local-expo-tax-return-due-monthly-and-quarterly.ics3220Local expo tax return due - monthly and quarterly
  
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-31-Premier-resort-tax-return-due-monthly-and-quarterly.ics3221Premier resort tax return due - monthly and quarterly
  
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-31-911-fee-due-monthly.ics3222911 fee due - monthly
  
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-31-Rental-vehicle-tax-return-due-quarterly.ics3223Rental vehicle tax return due - quarterly
  
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-31-Alternate-fuel-terminal-operator-return-due-monthly-quarterly.ics3224Alternate fuel, terminal operator return due - monthly, quarterly
  
10/31/2025 12:00 AM10/31/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-10-31-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3225Supplier, shipper, transporter fuel tax return due - monthly
  
11/2/2025 12:00 AM11/2/2025 11:59 PMYes3226My Tax Account, Wisconsin Telefile and Wis e-File system file outage 5am-noon
  
11/17/2025 12:00 AM11/17/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-11-17-WT-6-deposit-report-due-semi-monthly.ics3227WT-6 deposit report due - semi-monthly
  
11/17/2025 12:00 AM11/17/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-11-17-PW-1-(Estates-and-trusts)-extension-deadline.ics3228PW-1 (Estates and trusts) extension deadline
  
11/17/2025 12:00 AM11/17/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-11-17-Corporation-tax-return-extension-deadline-(Non-combined-and-combined).ics3230Corporation tax return extension deadline (Non-combined and combined)
  
11/17/2025 12:00 AM11/17/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-11-17-Cigarette-tobacco-products-return-due-monthly.ics3231Cigarette, tobacco products return due - monthly
  
11/17/2025 12:00 AM11/17/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-11-17-Liquor-beer-return-due-monthly.ics3232Liquor, beer return due - monthly
  
11/17/2025 12:00 AM11/17/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-11-17-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics3233Supplier, shipper, transporter fuel tax payment due - monthly
  
11/17/2025 12:00 AM11/17/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-11-17-Blenders-fuel-tax-return-due-intermittent-monthly.ics3234Blenders fuel tax return due - intermittent monthly
  
11/20/2025 12:00 AM11/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-11-20-Sales-and-use-tax-return-due-early-monthly.ics3235Sales and use tax return due - early monthly
  
11/20/2025 12:00 AM11/20/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-11-20-Aviation-fuel-tax-return-due-monthly.ics3236Aviation fuel tax return due - monthly
  
11/27/2025 12:00 AM11/27/2025 11:59 PMYes3237State of Wisconsin holiday - Revenue offices closed
  
12/1/2025 12:00 AM12/1/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-01-Sales-and-use-tax-return-due-monthly.ics3238Sales and use tax return due - monthly
  
12/1/2025 12:00 AM12/1/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-01-WT-6-deposit-report-due-semi-monthly-monthly.ics3239WT-6 deposit report due - semi-monthly, monthly
  
12/1/2025 12:00 AM12/1/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-01-Local-expo-tax-return-due-monthly.ics3240Local expo tax return due - monthly
  
12/1/2025 12:00 AM12/1/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-01-Premier-resort-tax-return-due-monthly.ics3241Premier resort tax return due - monthly
  
12/1/2025 12:00 AM12/1/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-01-911-fee-due-monthly.ics3242911 fee due - monthly
  
12/1/2025 12:00 AM12/1/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-01-Alternate-fuel-terminal-operator-return-due-monthly.ics3243Alternate fuel, terminal operator return due - monthly
  
12/1/2025 12:00 AM12/1/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-01-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics3244Supplier, shipper, transporter fuel tax return due - monthly
  
12/7/2025 12:00 AM12/7/2025 11:59 PMYes3245Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon
  
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-15-WT-6-deposit-report-due-semi-monthly.ics3246WT-6 deposit report due - semi-monthly
  
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-15-Exempt-corporation-tax-return-extension-deadline.ics3247Exempt corporation tax return extension deadline
  
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-15-Exempt-non-employees-trust-IRA-MSA-Fiduciary-tax-return-extension-deadline.ics3249Exempt non-employees trust, IRA, MSA Fiduciary tax return extension deadline
  
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-15-Cigarette-tobacco-products-return-due-monthly.ics3250Cigarette, tobacco products return due - monthly
  
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-15-Liquor-beer-return-due-monthly.ics3251Liquor, beer return due - monthly
  
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics3252Supplier, shipper, transporter fuel tax payment due - monthly
  
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics3253Blenders fuel tax return due - intermittent monthly
  
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-15-4th-pass-through-withholding-estimated-payment-due.ics32544th pass-through withholding estimated payment due
  
12/15/2025 12:00 AM12/15/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-15-4th-corporation-estimated-payment-due.ics32554th corporation estimated payment due
  
12/22/2025 12:00 AM12/22/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-22-Sales-and-use-tax-return-due-early-monthly.ics3256Sales and use tax return due - early monthly
  
12/22/2025 12:00 AM12/22/2025 11:59 PMYeshttps://www.revenue.wi.gov/EventDownloads/Businesses/2025-12-22-Aviation-fuel-tax-return-due-monthly.ics3257Aviation fuel tax return due - monthly
  
12/24/2025 12:00 AM12/24/2025 11:59 PMYes3258State of Wisconsin holiday - Revenue offices closed
  
12/25/2025 12:00 AM12/25/2025 11:59 PMYes3259State of Wisconsin holiday - Revenue offices closed
  
12/31/2025 12:00 AM12/31/2025 11:59 PMYes3260State of Wisconsin holiday - Revenue offices closed
  
1/1/2026 12:00 AM1/1/2026 11:59 PMYes3261State of Wisconsin holiday - Revenue offices closed