| Sales and use tax return due - monthly | | 10/1/2018 12:00 AM | 10/1/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-01-Sales-and-Use-tax-return-due-monthly.ics | 1479 |
| WT-6 deposit report due - semi-monthly and monthly | | 10/1/2018 12:00 AM | 10/1/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-01-WT-6-deposit-report-due-semi-monthly-and-monthly.ics | 1480 |
| Local expo tax return due - monthly | | 10/1/2018 12:00 AM | 10/1/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-01-Local-expo-tax-return-due-monthly.ics | 1481 |
| Premier resort tax return due - monthly | | 10/1/2018 12:00 AM | 10/1/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-01-Premier-resort-tax-return-due-monthly.ics | 1482 |
| Police and fire protection fee due - monthly | | 10/1/2018 12:00 AM | 10/1/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-01-Police-and-fire-protection-fee-due-monthly.ics | 1483 |
| Alternate fuel, terminal operator return due - monthly | | 10/1/2018 12:00 AM | 10/1/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-01-Alternate-fuel-terminal-operator-return-due-monthly.ics | 1484 |
| Supplier, shipper, transporter fuel tax return due - monthly | | 10/1/2018 12:00 AM | 10/1/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-01-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 1485 |
| Fiduciary tax return extension deadline | | 10/1/2018 12:00 AM | 10/1/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-01-Fiduciary-tax-return-extension-deadline.ics | 1486 |
| 1CNP extension deadline | | 10/15/2018 12:00 AM | 10/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-15-01-1CNP-extension-deadline.ics | 1487 |
| 1CNS extension deadline | | 10/15/2018 12:00 AM | 10/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-15-1CNS-extension-deadline.ics | 1488 |
| S Corporation tax return extension deadline | | 10/15/2018 12:00 AM | 10/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-15-S-Corporation-tax-return-extension-deadline.ics | 1489 |
| Exempt employee's trust, ISA, MSA Fiduciary tax return extension deadline | | 10/15/2018 12:00 AM | 10/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-15-Exempt-employees-trust-IRA-MSA-fiduciary-income-tax-return-extension-deadline.ics | 1490 |
| PW-1 (Partnerships) extension deadline | | 10/15/2018 12:00 AM | 10/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-15-PW-1-partnerships-extension-deadline.ics | 1491 |
| PW-1 (S Corps) extension deadline | | 10/15/2018 12:00 AM | 10/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-15-PW-1-S-corps-extension-deadline.ics | 1492 |
| WT-6 deposit report due - semi-monthly | | 10/15/2018 12:00 AM | 10/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-15-WT-6-deposit-report-due-semi-monthly.ics | 1493 |
| Cigarette/tobacco products return due - monthly, quarterly | | 10/15/2018 12:00 AM | 10/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-15-Cigarette-tobacco-products-return-due-monthly-quarterly.ics | 1494 |
| Liquor/beer return due - monthly | | 10/15/2018 12:00 AM | 10/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-15-Liquor-beer-return-due-monthly.ics | 1495 |
| Supplier, shipper, transporter fuel tax payment due - monthly | | 10/15/2018 12:00 AM | 10/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 1496 |
| Blenders fuel tax return due - intermittent monthly | | 10/15/2018 12:00 AM | 10/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 1497 |
| Wine direct shippers return due - quarterly | | 10/15/2018 12:00 AM | 10/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-15-Wine-direct-shippers-return-due-quarterly.ics | 1498 |
| Individual income tax returns extension deadline | | 10/15/2018 12:00 AM | 10/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-15-Individual-income-tax-returns-extension-deadline.ics | 1499 |
| Sales and use tax return due - early monthly | | 10/22/2018 12:00 AM | 10/22/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-22-Sales-and-Use-tax-return-due-early-monthly.ics | 1500 |
| Aviation fuel tax return due - monthly, quarterly | | 10/22/2018 12:00 AM | 10/22/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-22-Aviation-fuel-tax-return-due-monthly.ics | 1501 |
| 3rd quarter dry cleaning fee returns due | | 10/25/2018 12:00 AM | 10/25/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-25-3rd-quarter-dry-cleaning-fee-returns-due.ics | 1502 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage | | 10/28/2018 5:00 AM | 10/28/2018 12:00 PM | | | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-28_MTA_Telefile_WI-efile_Outages.ics | 1310 |
| Sales and use tax return due - monthly and quarterly | | 10/31/2018 12:00 AM | 10/31/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-31-Sales-and-Use-tax-return-due-monthly-and-quarterly.ics | 1503 |
| WT-6 deposit report due - semi-monthly, monthly and quarterly | | 10/31/2018 12:00 AM | 10/31/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-31-WT-6-deposit-report-due-semi-monthly-monthly-and-quarterly.ics | 1504 |
| Local expo tax return due - monthly and quarterly | | 10/31/2018 12:00 AM | 10/31/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-31-Local-expo-tax-return-due-monthly-and-quarterly.ics | 1505 |
| Premier resort tax return due - monthly and quarterly | | 10/31/2018 12:00 AM | 10/31/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-31-Premier-resort-tax-return-due-monthly-and-quarterly.ics | 1506 |
| Police and fire protection fee due - monthly | | 10/31/2018 12:00 AM | 10/31/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-31-Police-and-fire-protection-fee-due-monthly.ics | 1507 |
| Rental vehicle tax return due - quarterly | | 10/31/2018 12:00 AM | 10/31/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-31-Rental-vehicle-tax-return-due-quarterly.ics | 1508 |
| Alternate fuel, terminal operator return due - monthly, quarterly | | 10/31/2018 12:00 AM | 10/31/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-31-Alternate-fuel-terminal-operator-return-due-monthly-quarterly.ics | 1509 |
| Supplier, shipper, transporter fuel tax return due - monthly | | 10/31/2018 12:00 AM | 10/31/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-10-31-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 1510 |
| WT-6 deposit report due - semi-monthly | | 11/15/2018 12:00 AM | 11/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-15-WT-6-deposit-report-due-semi-monthly.ics | 1511 |
| PW-1 (Estates and trusts) extension deadline | | 11/15/2018 12:00 AM | 11/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-15-PW-1-estates-and-trusts-extension-deadline.ics | 1512 |
| Corporation tax return extension deadline (Non-combined and Combined) | | 11/15/2018 12:00 AM | 11/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-15-Corporation-tax-return-extension-deadline-non-combined-and-combined.ics | 1513 |
| Cigarette/tobacco products return due - monthly | | 11/15/2018 12:00 AM | 11/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-15-Cigarette-tobacco-products-return-due-monthly.ics | 1514 |
| Liquor/beer return due - monthly | | 11/15/2018 12:00 AM | 11/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-15-Liquor-beer-return-due-monthly.ics | 1515 |
| Supplier, shipper, transporter fuel tax payment due - monthly | | 11/15/2018 12:00 AM | 11/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-15-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 1516 |
| Blenders fuel tax return due - intermittent monthly | | 11/15/2018 12:00 AM | 11/15/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-15-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 1517 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage | | 11/18/2018 5:00 AM | 11/18/2018 12:00 PM | | | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-18_MTA_Telefile_WI-efile_Outages.ics | 1311 |
| Sales and use tax return due - early monthly | | 11/20/2018 12:00 AM | 11/20/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-20-Sales-and-Use-tax-return-due-early-monthly.ics | 1518 |
| Aviation fuel tax return due - monthly | | 11/20/2018 12:00 AM | 11/20/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-20-Aviation-fuel-tax-return-due-monthly.ics | 1519 |
| State of Wisconsin holiday - Revenue offices closed | | 11/22/2018 12:00 AM | 11/22/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-22-State-of-Wisconsin-holiday-Revenue-offices-closed.ics | 1463 |
| Sales and use tax return due - monthly | | 11/30/2018 12:00 AM | 11/30/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-30-Sales-and-Use-tax-return-due-monthly.ics | 1520 |
| WT-6 deposit report due - semi-monthly and monthly | | 11/30/2018 12:00 AM | 11/30/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-30-WT-6-deposit-report-due-semi-monthly-and-monthly.ics | 1521 |
| Local expo tax return due - monthly | | 11/30/2018 12:00 AM | 11/30/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-30-Local-expo-tax-return-due-monthly.ics | 1522 |
| Premier resort tax return due - monthly | | 11/30/2018 12:00 AM | 11/30/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-30-Premier-resort-tax-return-due-monthly.ics | 1523 |
| Police and fire protection fee due - monthly | | 11/30/2018 12:00 AM | 11/30/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-30-Police-and-fire-protection-fee-due-monthly.ics | 1524 |
| Alternate fuel, terminal operator return due - monthly | | 11/30/2018 12:00 AM | 11/30/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-30-Alternate-fuel-terminal-operator-return-due-monthly.ics | 1525 |
| Supplier, shipper, transporter fuel tax return due - monthly | | 11/30/2018 12:00 AM | 11/30/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-11-30-Supplier-shipper-transporter-fuel-tax-return-due-monthly.ics | 1526 |
| My Tax Account, Wisconsin Telefile and Wis e-File system file outage | | 12/9/2018 5:00 AM | 12/9/2018 12:00 PM | | | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-09_MTA_Telefile_WI-efile_Outages.ics | 1312 |
| WT-6 deposit report due - semi-monthly | | 12/17/2018 12:00 AM | 12/17/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-17-WT-6-deposit-report-due-semi-monthly.ics | 1527 |
| Exempt corporation tax return extension deadline | | 12/17/2018 12:00 AM | 12/17/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-17-Exempt-corporation-tax-return-extension-deadline.ics | 1528 |
| Exempt non-employee's trust, IRA, MSA Fiduciary tax return extension deadline | | 12/17/2018 12:00 AM | 12/17/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-17-Exempt-non-employees-trust-IRA-MSA-fiduciary-tax-return-extension-deadline.ics | 1529 |
| Cigarette/tobacco products return due - monthly | | 12/17/2018 12:00 AM | 12/17/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-17-Cigarette-tobacco-products-return-due-monthly.ics | 1530 |
| Liquor/beer return due - monthly | | 12/17/2018 12:00 AM | 12/17/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-17-Liquor-beer-return-due-monthly.ics | 1531 |
| Supplier, shipper, transporter fuel tax payment due - monthly | | 12/17/2018 12:00 AM | 12/17/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-17-Supplier-shipper-transporter-fuel-tax-payment-due-monthly.ics | 1532 |
| Blenders fuel tax return due - intermittent monthly | | 12/17/2018 12:00 AM | 12/17/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-17-Blenders-fuel-tax-return-due-intermittent-monthly.ics | 1533 |
| PW-ES 4th pass-through withholding estimated payment due | | 12/17/2018 12:00 AM | 12/17/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-17-PW-ES-4th-pass-through-withholding-estimated-payment-due.ics | 1534 |
| Corp-ES 4th corporation estimated payment due | | 12/17/2018 12:00 AM | 12/17/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-17-Corp-ES-4th-corporation-estimated-payment-due.ics | 1535 |
| Sales and use tax return due - early monthly | | 12/20/2018 12:00 AM | 12/20/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-20-Sales-and-Use-tax-return-due-early-monthly.ics | 1536 |
| Aviation fuel tax return due - monthly | | 12/20/2018 12:00 AM | 12/20/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-20-Aviation-fuel-tax-return-due-monthly.ics | 1537 |
| State of Wisconsin holiday - Revenue offices closed | | 12/24/2018 12:00 AM | 12/24/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-24-State-of-Wisconsin-holiday-Revenue-offices-closed.ics | 1464 |
| State of Wisconsin holiday - Revenue offices closed | | 12/25/2018 12:00 AM | 12/25/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-25-State-of-Wisconsin-holiday-Revenue-offices-closed.ics | 1465 |
| State of Wisconsin holiday - Revenue offices closed | | 12/31/2018 12:00 AM | 12/31/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-31-State-of-Wisconsin-holiday-Revenue-offices-closed.ics | 1466 |
| Qualified Wisconsin Business registration deadline | | 12/31/2018 12:00 AM | 12/31/2018 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2018-12-31-Qualified-Wisconsin-Business-registration-deadline.ics | 1538 |
| State of Wisconsin holiday - Revenue offices closed | | 1/1/2019 12:00 AM | 1/1/2019 11:59 PM | | Yes | https://revenue-auth-prod.wi.gov/EventDownloads/TaxProfessionals/2019-01-01-State-of-Wisconsin-holiday-Revenue-offices-closed.ics | 1467 |
