| My Tax Account, Wisconsin Telefile and Wis e-File system file outage 5am-noon | | 12/10/2023 12:00 AM | 12/10/2023 11:59 PM | | Yes | | 2583 |
| WT-6 deposit report due - semi-monthly | | 12/15/2023 12:00 AM | 12/15/2023 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2023-12-15-WT-6-deposit-report-due-semi-monthly.ics | 2767 |
| Exempt corporation tax return extension deadline | | 12/15/2023 12:00 AM | 12/15/2023 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2023-12-15-Exempt-corporation-tax-return-extension-deadline.ics | 2768 |
| Exempt non-employee's trust, IRA, MSA Fiduciary tax return extension deadline | | 12/15/2023 12:00 AM | 12/15/2023 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2023-12-15-Exempt-non-employees-trust-IRA-MSA-Fiduciary-tax-return-extension-deadline.ics | 2769 |
| Cigarette, tobacco products return due - monthly | | 12/15/2023 12:00 AM | 12/15/2023 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2023-12-15-Cigarette-tobacco-products-return-due-monthly.ics | 2770 |
| Liquor, beer return due - monthly | | 12/15/2023 12:00 AM | 12/15/2023 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2023-12-15-Liquor-beer-return-due-monthly.ics | 2771 |
| Supplier, shipper, transporter fuel tax payment due - monthly | | 12/15/2023 12:00 AM | 12/15/2023 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2023-12-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 2772 |
| Blenders fuel tax return due - intermittent monthly | | 12/15/2023 12:00 AM | 12/15/2023 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2023-12-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 2773 |
| 4th pass-through withholding estimated payment due | | 12/15/2023 12:00 AM | 12/15/2023 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2023-12-15-4th-pass-through-withholding-estimated-payment-due.ics | 2774 |
| 4th corporation estimated payment due | | 12/15/2023 12:00 AM | 12/15/2023 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2023-12-15-4th-corporation-estimated-payment-due.ics | 2775 |
| Sales and use tax return due - early monthly | | 12/20/2023 12:00 AM | 12/20/2023 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2023-12-20-Sales-and-use-tax-return-due-early-monthly.ics | 2776 |
| Aviation fuel tax return due - monthly | | 12/20/2023 12:00 AM | 12/20/2023 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2023-12-20-Aviation-fuel-tax-return-due-monthly.ics | 2777 |
| State of Wisconsin holiday - Revenue offices closed | | 12/25/2023 12:00 AM | 12/25/2023 11:59 PM | | Yes | | 2778 |
| State of Wisconsin holiday - Revenue offices closed | | 1/1/2024 12:00 AM | 1/1/2024 11:59 PM | | Yes | | 2779 |
| Qualified Wisconsin Business Registration deadline | | 1/2/2024 12:00 AM | 1/2/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-02-Qualified-Wisconsin-Business-Registration-deadline.ics | 2780 |
| Sales and use tax return due - monthly | | 1/2/2024 12:00 AM | 1/2/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-02-Sales-and-use-tax-return-due-monthly.ics | 2781 |
| WT-6 deposit report due - semi-monthly, monthly | | 1/2/2024 12:00 AM | 1/2/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-02-WT-6-deposit-report-due-semi-monthly-monthly.ics | 2782 |
| Alternate fuel, terminal operator return due - monthly | | 1/2/2024 12:00 AM | 1/2/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-02-Alternate-fuel-terminal-operator-return-due-monthly.ics | 2783 |
| Supplier-shipper-transporter fuel tax return due - monthly | | 1/2/2024 12:00 AM | 1/2/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-02-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 2784 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage all day | | 1/6/2024 12:00 AM | 1/6/2024 11:59 PM | | Yes | | 2854 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage all day | | 1/7/2024 12:00 AM | 1/7/2024 11:59 PM | | Yes | | 2855 |
| State of Wisconsin holiday - Revenue offices closed | | 1/15/2024 12:00 AM | 1/15/2024 11:59 PM | | Yes | | 2785 |
| 1-ES 4th quarter estimated payment due for individuals, estates and trusts | | 1/16/2024 12:00 AM | 1/16/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-16-1-ES-4th-quarter-estimated-payment-due-for-individuals-estates-and-trusts.ics | 2786 |
| WT-6 deposit report due - semi-monthly | | 1/16/2024 12:00 AM | 1/16/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-16-WT-6-deposit-report-due-semi-monthly.ics | 2787 |
| Cigarette-tobacco products return due - monthly, quarterly | | 1/16/2024 12:00 AM | 1/16/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-16-Cigarette-tobacco-products-return-due-monthly-quarterly.ics | 2788 |
| Liquor-beer return due - monthly | | 1/16/2024 12:00 AM | 1/16/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-16-Liquor-beer-return-due-monthly.ics | 2789 |
| Supplier, shipper, transporter fuel tax payment due - monthly | | 1/16/2024 12:00 AM | 1/16/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-16-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 2790 |
| Blenders fuel tax return due - intermittent monthly | | 1/16/2024 12:00 AM | 1/16/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-16-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 2791 |
| Wine direct shippers return due - quarterly | | 1/16/2024 12:00 AM | 1/16/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-16-Wine-direct-shippers-return-due-quarterly.ics | 2792 |
| Sales and use tax return due - early monthly | | 1/22/2024 12:00 AM | 1/22/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-22-Sales-and-use-tax-return-due-early-monthly.ics | 2793 |
| Aviation fuel tax return due - monthly, quarterly | | 1/22/2024 12:00 AM | 1/22/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-22-Aviation-fuel-tax-return-due-monthly-quarterly.ics | 2794 |
| 4th quarter dry cleaning fee returns due | | 1/25/2024 12:00 AM | 1/25/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-25-4th-quarter-dry-cleaning-fee-returns-due.ics | 2795 |
| Sales and use tax return due - monthly, quarterly and annual | | 1/31/2024 12:00 AM | 1/31/2024 11:59 PM | | Yes | | 2796 |
| WT-6 deposit report due - semi-monthly, monthly and quarterly | | 1/31/2024 12:00 AM | 1/31/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-31-WT-6-deposit-report-due-semi-monthly-monthly-and-quarterly.ics | 2797 |
| WT-7 reconciliation due, including wage statements (w2s) and information returns (1099s) | | 1/31/2024 12:00 AM | 1/31/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-31-WT-7-reconciliation-due-including-wage-statements-(w2s)-and-information-returns.ics | 2798 |
| Local expo tax return due - monthly, quarterly, annual | | 1/31/2024 12:00 AM | 1/31/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-31-Local-expo-tax-return-due-monthly-quarterly-annual.ics | 2799 |
| Premier resort tax return due - monthly, quarterly, annual | | 1/31/2024 12:00 AM | 1/31/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-31-Premier-resort-tax-return-due-monthly-quarterly-annual.ics | 2800 |
| Rental vehicle tax return due - quarterly | | 1/31/2024 12:00 AM | 1/31/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-31-Rental-vehicle-tax-return-due-quarterly.ics | 2801 |
| PW-2 due (S Corps) | | 1/31/2024 12:00 AM | 1/31/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-31-PW-2-due-(S Corps).ics | 2802 |
| Police and fire protection fee due - monthly | | 1/31/2024 12:00 AM | 1/31/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-31-Police-and-fire-protection-fee-due-monthly.ics | 2803 |
| Alternate fuel, terminal operator return due - monthly, quarterly | | 1/31/2024 12:00 AM | 1/31/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-31-Alternate-fuel-terminal-operator-return-due-monthly-quarterly.ics | 2804 |
| Supplier, shipper, transporter fuel tax return due - monthly | | 1/31/2024 12:00 AM | 1/31/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-31-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 2805 |
| PW-2 due (Partnerships) | | 1/31/2024 12:00 AM | 1/31/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-01-31-PW-2-due-(Partnerships).ics | 2806 |
| Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon | | 2/4/2024 12:00 AM | 2/4/2024 11:59 PM | | Yes | | 2856 |
| WT-6 deposit report due - semi-monthly | | 2/15/2024 12:00 AM | 2/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-15-WT-6-deposit-report-due-semi-monthly.ics | 2807 |
| Cigarette-tobacco products return due - monthly | | 2/15/2024 12:00 AM | 2/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-15-Cigarette-tobacco-products-return-due-monthly.ics | 2808 |
| Liquor-beer return due - monthly | | 2/15/2024 12:00 AM | 2/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-15-Liquor-beer-return-due-monthly.ics | 2809 |
| Supplier, shipper, transporter fuel tax payment due - monthly | | 2/15/2024 12:00 AM | 2/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 2810 |
| Blenders fuel tax return due - intermittent monthly | | 2/20/2024 12:00 AM | 2/20/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-20-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 2811 |
| Sales and use tax return due - early monthly | | 2/20/2024 12:00 AM | 2/20/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-20-Sales-and-use-tax-return-due-early-monthly.ics | 2812 |
| Aviation fuel tax return due - monthly | | 2/20/2024 12:00 AM | 2/20/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-20-Aviation-fuel-tax-return-due-monthly.ics | 2813 |
| Sales and use tax return due - monthly | | 2/29/2024 12:00 AM | 2/29/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-29-Sales-and-use-tax-return-due-monthly.ics | 2814 |
| WT-6 deposit report due - semi-monthly and monthly | | 2/29/2024 12:00 AM | 2/29/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-29-WT-6-deposit-report-due-semi-monthly-and-monthly.ics | 2815 |
| Local expo tax return due - monthly | | 2/29/2024 12:00 AM | 2/29/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-29-Local-expo-tax-return-due-monthly.ics | 2816 |
| Premier resort tax return due - monthly | | 2/29/2024 12:00 AM | 2/29/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-29-Premier-resort-tax-return-due-monthly.ics | 2817 |
| PW-2 due (Estates and trusts) | | 2/29/2024 12:00 AM | 2/29/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-29-PW-2-due-(estates-and-trusts).ics | 2818 |
| Police and fire protection fee due - monthly | | 2/29/2024 12:00 AM | 2/29/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-29-Police-and-fire-protection-fee-due-monthly.ics | 2819 |
| Alternate fuel, terminal operator return due - monthly | | 2/29/2024 12:00 AM | 2/29/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-29-Alternate-fuel-terminal-operator-return-due-monthly.ics | 2820 |
| Supplier, shipper, transporter fuel tax return due - monthly | | 2/29/2024 12:00 AM | 2/29/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-02-29-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 2821 |
| Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon | | 3/3/2024 12:00 AM | 3/3/2024 11:59 PM | | Yes | | 2857 |
| WT-6 deposit report due - semi-monthly | | 3/15/2024 12:00 AM | 3/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-03-15-WT-6-deposit-report-due-semi-monthly.ics | 2822 |
| PW-ES 1st pass-through withholding estimated payment due | | 3/15/2024 12:00 AM | 3/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-03-15-PW-ES-1st-pass-through-withholding-estimated-payment-due.ics | 2823 |
| PW-1 due (Partnerships and S Corps) | | 3/15/2024 12:00 AM | 3/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-03-15-PW-1-due-(Partnerships-and-S-Corps).ics | 2824 |
| Partnership tax return due | | 3/15/2024 12:00 AM | 3/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-03-15-Partnership-tax-return-due.ics | 2825 |
| S Corporation tax return due | | 3/15/2024 12:00 AM | 3/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-03-15-S-Corporation-tax-return-due.ics | 2826 |
| Cigarette-tobacco products return due - monthly | | 3/15/2024 12:00 AM | 3/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-03-15-Cigarette-tobacco-products-return-due-monthly.ics | 2827 |
| Liquor-beer return due - monthly | | 3/15/2024 12:00 AM | 3/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-03-15-Liquor-beer-return-due-monthly.ics | 2828 |
| Supplier, shipper, transporter fuel tax payment due - monthly | | 3/15/2024 12:00 AM | 3/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-03-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 2829 |
| Blenders fuel tax return due - intermittent monthly | | 3/15/2024 12:00 AM | 3/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-03-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 2830 |
| Sales and use tax return due - early monthly | | 3/20/2024 12:00 AM | 3/20/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-03-20-Sales-and-use-tax-return-due-early-monthly.ics | 2831 |
| Aviation fuel tax return due - monthly | | 3/20/2024 12:00 AM | 3/20/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-03-20-Aviation-fuel-tax-return-due-monthly.ics | 2832 |
| Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon | | 3/31/2024 12:00 AM | 3/31/2024 11:59 PM | | Yes | | 2858 |
| Sales and use tax return due - monthly | | 4/1/2024 12:00 AM | 4/1/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-01-Sales-and-use-tax-return-due-monthly.ics | 2833 |
| WT-6 deposit report due - semi-monthly and monthly | | 4/1/2024 12:00 AM | 4/1/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-01-WT-6-deposit-report-due-semi-monthly-and-monthly.ics | 2834 |
| Local expo tax return due - monthly | | 4/1/2024 12:00 AM | 4/1/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-01-Local-expo-tax-return-due-monthly.ics | 2835 |
| Premier resort tax return due - monthly | | 4/1/2024 12:00 AM | 4/1/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-01-Premier-resort-tax-return-due-monthly.ics | 2836 |
| Police and fire protection fee due - monthly | | 4/1/2024 12:00 AM | 4/1/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-01-Police-and-fire-protection-fee-due-monthly.ics | 2837 |
| Alternate fuel, terminal operator return due - monthly | | 4/1/2024 12:00 AM | 4/1/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-01-Alternate-fuel-terminal-operator-return-due-monthly.ics | 2838 |
| Individual income tax returns due | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-Individual-income-tax-returns-due.ics | 2839 |
| WT-6 deposit report due - semi-monthly | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-WT-6-deposit-report-due-semi-monthly.ics | 2840 |
| Cigarette-tobacco products return due - monthly, quarterly | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-Cigarette-tobacco-products-return-due-monthly-quarterly.ics | 2841 |
| Liquor-beer return due - monthly | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-Liquor-beer-return-due-monthly.ics | 2842 |
| Blenders fuel tax return due - intermittent monthly | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 2843 |
| Wine direct shippers return due - quarterly | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-Wine-direct-shippers-return-due-quarterly.ics | 2844 |
| Supplier, shipper, transporter fuel tax payment due - monthly | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 2845 |
| Exempt employees trust, IRA, MSA fiduciary income tax return due | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-Exempt-employees-trust-IRA-MSA-fiduciary-income-tax-return-due.ics | 2846 |
| Corporation franchise or income tax return due (Non-combined and combined) | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-Corporation-franchise-or-income-tax-return-due-(Non-combined-and-combined).ics | 2847 |
| Fiduciary income tax returns due | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-Fiduciary-income-tax-returns-due.ics | 2848 |
| 1CNP composite return for nonresident partners due | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-1CNP-composite-return-for-nonresident-partners-due.ics | 2849 |
| 1CNS composite return for nonresident shareholder due | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-1CNS-composite-return-for-nonresident-shareholder-due.ics | 2850 |
| PW-1 due (Estates and trusts) | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-PW-1-due-(Estates-and-trusts).ics | 2851 |
| Corp-ES Corporation 1st quarter estimated tax payment due | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-Corp-ES-Corporation-1st-quarter-estimated-tax-payment-due.ics | 2852 |
| Statute of Limitation for 2019 Wisconsin income tax refunds | | 4/15/2024 12:00 AM | 4/15/2024 11:59 PM | | Yes | https://www.revenue.wi.gov/EventDownloads/TaxProfessionals/2024-04-15-Statute-of-Limitation-for-2019-Wisconsin-income-tax-refunds.ics | 2853 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage 5am - Noon | | 4/28/2024 12:00 AM | 4/28/2024 11:59 PM | | Yes | | 2859 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage all day | | 6/8/2024 12:00 AM | 6/8/2024 11:59 PM | | Yes | | 2860 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage all day | | 6/9/2024 12:00 AM | 6/9/2024 11:59 PM | | Yes | | 2861 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage 5am - Noon | | 6/30/2024 12:00 AM | 6/30/2024 11:59 PM | | Yes | | 2862 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage 5am - Noon | | 7/28/2024 12:00 AM | 7/28/2024 11:59 PM | | Yes | | 2863 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage all day | | 9/7/2024 12:00 AM | 9/7/2024 11:59 PM | | Yes | | 2864 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage all day | | 9/8/2024 12:00 AM | 9/8/2024 11:59 PM | | Yes | | 2865 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage 5am - Noon | | 9/29/2024 12:00 AM | 9/29/2024 11:59 PM | | Yes | | 2866 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage 5am-noon | | 10/27/2024 12:00 AM | 10/27/2024 11:59 PM | | Yes | | 2867 |
| Wisconsin e-File, Wisconsin Telefile and My Tax Account file outage 5am-noon | | 12/8/2024 12:00 AM | 12/8/2024 11:59 PM | | Yes | | 2868 |