BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Lyra Ventures LLC//FilingDates public calendars//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
NAME:Wisconsin business filing dates\, 2027 (FilingDates)
X-WR-CALNAME:Wisconsin business filing dates\, 2027 (FilingDates)
DESCRIPTION:Wisconsin business filing dates\, 2027. Each event links the of
 ficial source it was computed from. Obligations without a verified source 
 are not in this feed\; the web page lists them as unsupported. A reminder 
 only: confirm with the source before filing.
X-WR-CALDESC:Wisconsin business filing dates\, 2027. Each event links the o
 fficial source it was computed from. Obligations without a verified source
  are not in this feed\; the web page lists them as unsupported. A reminder
  only: confirm with the source before filing.
REFRESH-INTERVAL;VALUE=DURATION:P1D
X-PUBLISHED-TTL:P1D
BEGIN:VEVENT
UID:wi:WI-ST-12:2026-01-01:0:annual@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (a
 nnual filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the calendar year ends
 \nStated date 2027-01-31\, moved to the next business day.\nState legal ho
 lidays are not compiled: if this date is a state holiday\, the deadline mo
 ves to the next business day.\nExtended due date: 2027-03-01\nSource: http
 s://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-09-23)\nA
  reminder only: confirm with the source before filing. You file\; this cal
 endar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (annual filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (annual filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2026-10-01:0:quarterly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (q
 uarterly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the quarter ends\nStat
 ed date 2027-01-31\, moved to the next business day.\nState legal holidays
  are not compiled: if this date is a state holiday\, the deadline moves to
  the next business day.\nExtended due date: 2027-03-01\nSource: https://ww
 w.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-09-23)\nA remin
 der only: confirm with the source before filing. You file\; this calendar 
 reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (quarterly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (quarterly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2026-12-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (m
 onthly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the month ends\nStated
  date 2027-01-31\, moved to the next business day.\nState legal holidays a
 re not compiled: if this date is a state holiday\, the deadline moves to t
 he next business day.\nExtended due date: 2027-03-01\nSource: https://www.
 revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-09-23)\nA reminde
 r only: confirm with the source before filing. You file\; this calendar re
 minds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2026-10-01:0:quarterly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (quarterly wi
 thholding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the quarter ends\nStated date 2027-01-31\, moved t
 o the next business day.\nState legal holidays are not compiled: if this d
 ate is a state holiday\, the deadline moves to the next business day.\nSou
 rce: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf (retrieved 20
 26-09-23)\nA reminder only: confirm with the source before filing. You fil
 e\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (quarterl
 y withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (quarterl
 y withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2026-12-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly with
 holding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the month ends\nStated date 2027-01-31\, moved to 
 the next business day.\nState legal holidays are not compiled: if this dat
 e is a state holiday\, the deadline moves to the next business day.\nSourc
 e: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf (retrieved 2026
 -09-23)\nA reminder only: confirm with the source before filing. You file\
 ; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-7:2026-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:Wisconsin: Annual withholding reconciliation (WT-7) — WT-7
DESCRIPTION:Applies to: An employer the preparer attests withholds Wisconsi
 n income tax files the annual reconciliation (Form WT-7) by January 31 aft
 er the calendar year. A 30-day extension (to March 2\, or March 1 in a lea
 p year) may be requested for good cause\; it also covers the wage statemen
 ts. A business that discontinues files within 30 days of discontinuing\, n
 ot dated here.\nDue rule: WT-7: January 31 of the year after the calendar 
 year ends\nStated date 2027-01-31\, moved to the next business day.\nState
  legal holidays are not compiled: if this date is a state holiday\, the de
 adline moves to the next business day.\nExtended due date: 2027-03-02\nSou
 rce: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf (retrieved 20
 26-09-23)\nA reminder only: confirm with the source before filing. You fil
 e\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Annual withholding reconciliation (WT-7) — WT-7
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Annual withholding reconciliation (WT-7) — WT-7
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ui-quarterly:2026-10-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:Wisconsin: Quarterly contribution report — Contribution report
DESCRIPTION:Applies to: An employer the preparer lists as a quarterly Wisco
 nsin unemployment-insurance filer (subject to the Wisconsin UI law) files 
 contribution reports by the close of the month after each quarter (April 3
 0\, July 31\, October 31\, January 31)\; a Saturday\, Sunday or legal-holi
 day date moves to the next day that is none of those.\nDue rule: Contribut
 ion report: last day of the month after the quarter ends\nStated date 2027
 -01-31\, moved to the next business day.\nState legal holidays are not com
 piled: if this date is a state holiday\, the deadline moves to the next bu
 siness day.\nSource: https://dwd.wisconsin.gov/ui201/t4201.htm (retrieved 
 2026-09-23)\nA reminder only: confirm with the source before filing. You f
 ile\; this calendar reminds.
URL;VALUE=URI:https://dwd.wisconsin.gov/ui201/t4201.htm
CATEGORIES:Wisconsin,unemployment-insurance
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Quarterly contribution report — Contribution repor
 t
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Quarterly contribution report — Contribution repor
 t
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2027-01-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270301
DTEND;VALUE=DATE:20270302
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (m
 onthly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the month ends\nStated
  date 2027-02-28\, moved to the next business day.\nState legal holidays a
 re not compiled: if this date is a state holiday\, the deadline moves to t
 he next business day.\nExtended due date: 2027-03-29\nSource: https://www.
 revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-09-23)\nA reminde
 r only: confirm with the source before filing. You file\; this calendar re
 minds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2027-01-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270301
DTEND;VALUE=DATE:20270302
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly with
 holding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the month ends\nStated date 2027-02-28\, moved to 
 the next business day.\nState legal holidays are not compiled: if this dat
 e is a state holiday\, the deadline moves to the next business day.\nSourc
 e: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf (retrieved 2026
 -09-23)\nA reminder only: confirm with the source before filing. You file\
 ; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-Form-3:2026-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270315
DTEND;VALUE=DATE:20270316
SUMMARY:Wisconsin: Form 3 partnership return — Form 3 (calendar-year part
 nership)
DESCRIPTION:Applies to: A partnership's Form 3 is due the 15th day of the 3
 rd month after its taxable year ends\; a federal extension (Form 7004\, si
 x months) extends it to the federal extended due date\, and a Wisconsin-on
 ly extension is also available. Tax not paid by the original due date bear
 s interest during the extension\, so the extension does not move payment.\
 nDue rule: Form 3: 15th day of the 3rd month after the tax year ends\nStat
 e legal holidays are not compiled: if this date is a state holiday\, the d
 eadline moves to the next business day.\nExtended due date (Federal Form 7
 004): 2027-09-15\nSource: https://www.revenue.wi.gov/DOR%20Publications/pb
 401.pdf (retrieved 2026-09-23)\nA reminder only: confirm with the source b
 efore filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,income-franchise-return
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Form 3 partnership return — Form 3 (calendar-year 
 partnership)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Form 3 partnership return — Form 3 (calendar-year 
 partnership)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-Form-5S:2026-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270315
DTEND;VALUE=DATE:20270316
SUMMARY:Wisconsin: Form 5S tax-option (S) corporation return — Form 5S (c
 alendar-year S corporation)
DESCRIPTION:Applies to: An S corporation's Form 5S is due the 15th day of t
 he 3rd month after its taxable year ends.\nDue rule: Form 5S: 15th day of 
 the 3rd month after the tax year ends\nState legal holidays are not compil
 ed: if this date is a state holiday\, the deadline moves to the next busin
 ess day.\nSource: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf 
 (retrieved 2026-09-23)\nA reminder only: confirm with the source before fi
 ling. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,income-franchise-return
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Form 5S tax-option (S) corporation return — Form 5
 S (calendar-year S corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Form 5S tax-option (S) corporation return — Form 5
 S (calendar-year S corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2027-02-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270331
DTEND;VALUE=DATE:20270401
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (m
 onthly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the month ends\nState 
 legal holidays are not compiled: if this date is a state holiday\, the dea
 dline moves to the next business day.\nExtended due date: 2027-04-30\nSour
 ce: https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-0
 9-23)\nA reminder only: confirm with the source before filing. You file\; 
 this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2027-02-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270331
DTEND;VALUE=DATE:20270401
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly with
 holding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the month ends\nState legal holidays are not compi
 led: if this date is a state holiday\, the deadline moves to the next busi
 ness day.\nSource: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
  (retrieved 2026-09-23)\nA reminder only: confirm with the source before f
 iling. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-Form-4:2026-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270415
DTEND;VALUE=DATE:20270416
SUMMARY:Wisconsin: Form 4 / Form 6 corporation franchise or income tax retu
 rn — Form 4 / Form 6 (calendar-year C corporation)
DESCRIPTION:Applies to: A corporation's Form 4 or 6 is due the 15th day of 
 the 4th month after its taxable year ends (June 30 year-ends have their ow
 n line). Exempt organizations taxable as corporations file Form 4T on a di
 fferent date and are not dated here (the preparer attests the entity is no
 t one). Wisconsin's automatic extension (seven months or the federal origi
 nal due date\, whichever is later) and a federal extension (30 days after 
 the federal extended date) both depend on the federal return\, so the exte
 nded date is not computed. Tax is still due by the original date.\nDue rul
 e: Form 4 / Form 6: 15th day of the 4th month after the tax year ends\nSta
 te legal holidays are not compiled: if this date is a state holiday\, the 
 deadline moves to the next business day.\nSource: https://www.revenue.wi.g
 ov/DOR%20Publications/pb401.pdf (retrieved 2026-09-23)\nA reminder only: c
 onfirm with the source before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,income-franchise-return
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Form 4 / Form 6 corporation franchise or income tax 
 return — Form 4 / Form 6 (calendar-year C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Form 4 / Form 6 corporation franchise or income tax 
 return — Form 4 / Form 6 (calendar-year C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-corp-estimates:2027-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270415
DTEND;VALUE=DATE:20270416
SUMMARY:Wisconsin: Corporate estimated tax and surcharge — 1st estimate (
 calendar-year S corporation or C corporation)
DESCRIPTION:Applies to: A corporation required to pay Wisconsin estimated t
 ax pays by the 15th day of the 4th\, 6th\, 9th and 12th months of its taxa
 ble year. A corporation receiving an extension also pays by the 15th day o
 f the 4th month after the year ends\; the profile cannot say whether it ha
 s an extension\, so that payment is not dated here. A fiscal year beginnin
 g in April (a March year-end) pays its first installment June 15 and is no
 t covered here.\nDue rule: 1st estimate: 15th day of the 4th month of the 
 tax year\; 2nd estimate: 15th day of the 6th month of the tax year\; 3rd e
 stimate: 15th day of the 9th month of the tax year\; 4th estimate: 15th da
 y of the 12th month of the tax year\nState legal holidays are not compiled
 : if this date is a state holiday\, the deadline moves to the next busines
 s day.\nSource: https://www.revenue.wi.gov/Pages/OnlineServices/voucher-co
 rp-es.aspx (retrieved 2026-09-23)\nA reminder only: confirm with the sourc
 e before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/OnlineServices/voucher-corp-
 es.aspx
CATEGORIES:Wisconsin,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Corporate estimated tax and surcharge — 1st estima
 te (calendar-year S corporation or C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Corporate estimated tax and surcharge — 1st estima
 te (calendar-year S corporation or C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2027-01-01:0:quarterly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270430
DTEND;VALUE=DATE:20270501
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (q
 uarterly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the quarter ends\nStat
 e legal holidays are not compiled: if this date is a state holiday\, the d
 eadline moves to the next business day.\nExtended due date: 2027-05-31\nSo
 urce: https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026
 -09-23)\nA reminder only: confirm with the source before filing. You file\
 ; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (quarterly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (quarterly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2027-03-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270430
DTEND;VALUE=DATE:20270501
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (m
 onthly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the month ends\nState 
 legal holidays are not compiled: if this date is a state holiday\, the dea
 dline moves to the next business day.\nExtended due date: 2027-05-31\nSour
 ce: https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-0
 9-23)\nA reminder only: confirm with the source before filing. You file\; 
 this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2027-01-01:0:quarterly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270430
DTEND;VALUE=DATE:20270501
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (quarterly wi
 thholding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the quarter ends\nState legal holidays are not com
 piled: if this date is a state holiday\, the deadline moves to the next bu
 siness day.\nSource: https://www.revenue.wi.gov/DOR%20Publications/pb401.p
 df (retrieved 2026-09-23)\nA reminder only: confirm with the source before
  filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (quarterl
 y withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (quarterl
 y withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2027-03-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270430
DTEND;VALUE=DATE:20270501
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly with
 holding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the month ends\nState legal holidays are not compi
 led: if this date is a state holiday\, the deadline moves to the next busi
 ness day.\nSource: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
  (retrieved 2026-09-23)\nA reminder only: confirm with the source before f
 iling. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ui-quarterly:2027-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270430
DTEND;VALUE=DATE:20270501
SUMMARY:Wisconsin: Quarterly contribution report — Contribution report
DESCRIPTION:Applies to: An employer the preparer lists as a quarterly Wisco
 nsin unemployment-insurance filer (subject to the Wisconsin UI law) files 
 contribution reports by the close of the month after each quarter (April 3
 0\, July 31\, October 31\, January 31)\; a Saturday\, Sunday or legal-holi
 day date moves to the next day that is none of those.\nDue rule: Contribut
 ion report: last day of the month after the quarter ends\nState legal holi
 days are not compiled: if this date is a state holiday\, the deadline move
 s to the next business day.\nSource: https://dwd.wisconsin.gov/ui201/t4201
 .htm (retrieved 2026-09-23)\nA reminder only: confirm with the source befo
 re filing. You file\; this calendar reminds.
URL;VALUE=URI:https://dwd.wisconsin.gov/ui201/t4201.htm
CATEGORIES:Wisconsin,unemployment-insurance
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Quarterly contribution report — Contribution repor
 t
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Quarterly contribution report — Contribution repor
 t
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2027-04-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270531
DTEND;VALUE=DATE:20270601
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (m
 onthly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the month ends\nState 
 legal holidays are not compiled: if this date is a state holiday\, the dea
 dline moves to the next business day.\nExtended due date: 2027-06-30\nSour
 ce: https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-0
 9-23)\nA reminder only: confirm with the source before filing. You file\; 
 this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2027-04-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270531
DTEND;VALUE=DATE:20270601
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly with
 holding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the month ends\nState legal holidays are not compi
 led: if this date is a state holiday\, the deadline moves to the next busi
 ness day.\nSource: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
  (retrieved 2026-09-23)\nA reminder only: confirm with the source before f
 iling. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-corp-estimates:2027-01-01:1@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270615
DTEND;VALUE=DATE:20270616
SUMMARY:Wisconsin: Corporate estimated tax and surcharge — 2nd estimate (
 calendar-year S corporation or C corporation)
DESCRIPTION:Applies to: A corporation required to pay Wisconsin estimated t
 ax pays by the 15th day of the 4th\, 6th\, 9th and 12th months of its taxa
 ble year. A corporation receiving an extension also pays by the 15th day o
 f the 4th month after the year ends\; the profile cannot say whether it ha
 s an extension\, so that payment is not dated here. A fiscal year beginnin
 g in April (a March year-end) pays its first installment June 15 and is no
 t covered here.\nDue rule: 1st estimate: 15th day of the 4th month of the 
 tax year\; 2nd estimate: 15th day of the 6th month of the tax year\; 3rd e
 stimate: 15th day of the 9th month of the tax year\; 4th estimate: 15th da
 y of the 12th month of the tax year\nState legal holidays are not compiled
 : if this date is a state holiday\, the deadline moves to the next busines
 s day.\nSource: https://www.revenue.wi.gov/Pages/OnlineServices/voucher-co
 rp-es.aspx (retrieved 2026-09-23)\nA reminder only: confirm with the sourc
 e before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/OnlineServices/voucher-corp-
 es.aspx
CATEGORIES:Wisconsin,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Corporate estimated tax and surcharge — 2nd estima
 te (calendar-year S corporation or C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Corporate estimated tax and surcharge — 2nd estima
 te (calendar-year S corporation or C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2027-05-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270630
DTEND;VALUE=DATE:20270701
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (m
 onthly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the month ends\nState 
 legal holidays are not compiled: if this date is a state holiday\, the dea
 dline moves to the next business day.\nExtended due date: 2027-07-30\nSour
 ce: https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-0
 9-23)\nA reminder only: confirm with the source before filing. You file\; 
 this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2027-05-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270630
DTEND;VALUE=DATE:20270701
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly with
 holding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the month ends\nState legal holidays are not compi
 led: if this date is a state holiday\, the deadline moves to the next busi
 ness day.\nSource: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
  (retrieved 2026-09-23)\nA reminder only: confirm with the source before f
 iling. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2027-04-01:0:quarterly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270802
DTEND;VALUE=DATE:20270803
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (q
 uarterly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the quarter ends\nStat
 ed date 2027-07-31\, moved to the next business day.\nState legal holidays
  are not compiled: if this date is a state holiday\, the deadline moves to
  the next business day.\nExtended due date: 2027-08-31\nSource: https://ww
 w.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-09-23)\nA remin
 der only: confirm with the source before filing. You file\; this calendar 
 reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (quarterly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (quarterly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2027-06-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270802
DTEND;VALUE=DATE:20270803
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (m
 onthly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the month ends\nStated
  date 2027-07-31\, moved to the next business day.\nState legal holidays a
 re not compiled: if this date is a state holiday\, the deadline moves to t
 he next business day.\nExtended due date: 2027-08-31\nSource: https://www.
 revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-09-23)\nA reminde
 r only: confirm with the source before filing. You file\; this calendar re
 minds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2027-04-01:0:quarterly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270802
DTEND;VALUE=DATE:20270803
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (quarterly wi
 thholding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the quarter ends\nStated date 2027-07-31\, moved t
 o the next business day.\nState legal holidays are not compiled: if this d
 ate is a state holiday\, the deadline moves to the next business day.\nSou
 rce: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf (retrieved 20
 26-09-23)\nA reminder only: confirm with the source before filing. You fil
 e\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (quarterl
 y withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (quarterl
 y withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2027-06-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270802
DTEND;VALUE=DATE:20270803
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly with
 holding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the month ends\nStated date 2027-07-31\, moved to 
 the next business day.\nState legal holidays are not compiled: if this dat
 e is a state holiday\, the deadline moves to the next business day.\nSourc
 e: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf (retrieved 2026
 -09-23)\nA reminder only: confirm with the source before filing. You file\
 ; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ui-quarterly:2027-04-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270802
DTEND;VALUE=DATE:20270803
SUMMARY:Wisconsin: Quarterly contribution report — Contribution report
DESCRIPTION:Applies to: An employer the preparer lists as a quarterly Wisco
 nsin unemployment-insurance filer (subject to the Wisconsin UI law) files 
 contribution reports by the close of the month after each quarter (April 3
 0\, July 31\, October 31\, January 31)\; a Saturday\, Sunday or legal-holi
 day date moves to the next day that is none of those.\nDue rule: Contribut
 ion report: last day of the month after the quarter ends\nStated date 2027
 -07-31\, moved to the next business day.\nState legal holidays are not com
 piled: if this date is a state holiday\, the deadline moves to the next bu
 siness day.\nSource: https://dwd.wisconsin.gov/ui201/t4201.htm (retrieved 
 2026-09-23)\nA reminder only: confirm with the source before filing. You f
 ile\; this calendar reminds.
URL;VALUE=URI:https://dwd.wisconsin.gov/ui201/t4201.htm
CATEGORIES:Wisconsin,unemployment-insurance
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Quarterly contribution report — Contribution repor
 t
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Quarterly contribution report — Contribution repor
 t
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2027-07-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270831
DTEND;VALUE=DATE:20270901
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (m
 onthly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the month ends\nState 
 legal holidays are not compiled: if this date is a state holiday\, the dea
 dline moves to the next business day.\nExtended due date: 2027-09-30\nSour
 ce: https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-0
 9-23)\nA reminder only: confirm with the source before filing. You file\; 
 this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2027-07-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270831
DTEND;VALUE=DATE:20270901
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly with
 holding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the month ends\nState legal holidays are not compi
 led: if this date is a state holiday\, the deadline moves to the next busi
 ness day.\nSource: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
  (retrieved 2026-09-23)\nA reminder only: confirm with the source before f
 iling. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-corp-estimates:2027-01-01:2@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270915
DTEND;VALUE=DATE:20270916
SUMMARY:Wisconsin: Corporate estimated tax and surcharge — 3rd estimate (
 calendar-year S corporation or C corporation)
DESCRIPTION:Applies to: A corporation required to pay Wisconsin estimated t
 ax pays by the 15th day of the 4th\, 6th\, 9th and 12th months of its taxa
 ble year. A corporation receiving an extension also pays by the 15th day o
 f the 4th month after the year ends\; the profile cannot say whether it ha
 s an extension\, so that payment is not dated here. A fiscal year beginnin
 g in April (a March year-end) pays its first installment June 15 and is no
 t covered here.\nDue rule: 1st estimate: 15th day of the 4th month of the 
 tax year\; 2nd estimate: 15th day of the 6th month of the tax year\; 3rd e
 stimate: 15th day of the 9th month of the tax year\; 4th estimate: 15th da
 y of the 12th month of the tax year\nState legal holidays are not compiled
 : if this date is a state holiday\, the deadline moves to the next busines
 s day.\nSource: https://www.revenue.wi.gov/Pages/OnlineServices/voucher-co
 rp-es.aspx (retrieved 2026-09-23)\nA reminder only: confirm with the sourc
 e before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/OnlineServices/voucher-corp-
 es.aspx
CATEGORIES:Wisconsin,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Corporate estimated tax and surcharge — 3rd estima
 te (calendar-year S corporation or C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Corporate estimated tax and surcharge — 3rd estima
 te (calendar-year S corporation or C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2027-08-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270930
DTEND;VALUE=DATE:20271001
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (m
 onthly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the month ends\nState 
 legal holidays are not compiled: if this date is a state holiday\, the dea
 dline moves to the next business day.\nExtended due date: 2027-11-01\nSour
 ce: https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-0
 9-23)\nA reminder only: confirm with the source before filing. You file\; 
 this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2027-08-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270930
DTEND;VALUE=DATE:20271001
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly with
 holding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the month ends\nState legal holidays are not compi
 led: if this date is a state holiday\, the deadline moves to the next busi
 ness day.\nSource: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
  (retrieved 2026-09-23)\nA reminder only: confirm with the source before f
 iling. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2027-07-01:0:quarterly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271101
DTEND;VALUE=DATE:20271102
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (q
 uarterly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the quarter ends\nStat
 ed date 2027-10-31\, moved to the next business day.\nState legal holidays
  are not compiled: if this date is a state holiday\, the deadline moves to
  the next business day.\nExtended due date: 2027-11-30\nSource: https://ww
 w.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-09-23)\nA remin
 der only: confirm with the source before filing. You file\; this calendar 
 reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (quarterly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (quarterly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2027-09-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271101
DTEND;VALUE=DATE:20271102
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (m
 onthly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the month ends\nStated
  date 2027-10-31\, moved to the next business day.\nState legal holidays a
 re not compiled: if this date is a state holiday\, the deadline moves to t
 he next business day.\nExtended due date: 2027-11-30\nSource: https://www.
 revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-09-23)\nA reminde
 r only: confirm with the source before filing. You file\; this calendar re
 minds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2027-07-01:0:quarterly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271101
DTEND;VALUE=DATE:20271102
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (quarterly wi
 thholding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the quarter ends\nStated date 2027-10-31\, moved t
 o the next business day.\nState legal holidays are not compiled: if this d
 ate is a state holiday\, the deadline moves to the next business day.\nSou
 rce: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf (retrieved 20
 26-09-23)\nA reminder only: confirm with the source before filing. You fil
 e\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (quarterl
 y withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (quarterl
 y withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2027-09-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271101
DTEND;VALUE=DATE:20271102
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly with
 holding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the month ends\nStated date 2027-10-31\, moved to 
 the next business day.\nState legal holidays are not compiled: if this dat
 e is a state holiday\, the deadline moves to the next business day.\nSourc
 e: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf (retrieved 2026
 -09-23)\nA reminder only: confirm with the source before filing. You file\
 ; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ui-quarterly:2027-07-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271101
DTEND;VALUE=DATE:20271102
SUMMARY:Wisconsin: Quarterly contribution report — Contribution report
DESCRIPTION:Applies to: An employer the preparer lists as a quarterly Wisco
 nsin unemployment-insurance filer (subject to the Wisconsin UI law) files 
 contribution reports by the close of the month after each quarter (April 3
 0\, July 31\, October 31\, January 31)\; a Saturday\, Sunday or legal-holi
 day date moves to the next day that is none of those.\nDue rule: Contribut
 ion report: last day of the month after the quarter ends\nStated date 2027
 -10-31\, moved to the next business day.\nState legal holidays are not com
 piled: if this date is a state holiday\, the deadline moves to the next bu
 siness day.\nSource: https://dwd.wisconsin.gov/ui201/t4201.htm (retrieved 
 2026-09-23)\nA reminder only: confirm with the source before filing. You f
 ile\; this calendar reminds.
URL;VALUE=URI:https://dwd.wisconsin.gov/ui201/t4201.htm
CATEGORIES:Wisconsin,unemployment-insurance
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Quarterly contribution report — Contribution repor
 t
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Quarterly contribution report — Contribution repor
 t
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2027-10-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271130
DTEND;VALUE=DATE:20271201
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (m
 onthly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the month ends\nState 
 legal holidays are not compiled: if this date is a state holiday\, the dea
 dline moves to the next business day.\nExtended due date: 2027-12-30\nSour
 ce: https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-0
 9-23)\nA reminder only: confirm with the source before filing. You file\; 
 this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2027-10-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271130
DTEND;VALUE=DATE:20271201
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly with
 holding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the month ends\nState legal holidays are not compi
 led: if this date is a state holiday\, the deadline moves to the next busi
 ness day.\nSource: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
  (retrieved 2026-09-23)\nA reminder only: confirm with the source before f
 iling. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-corp-estimates:2027-01-01:3@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271215
DTEND;VALUE=DATE:20271216
SUMMARY:Wisconsin: Corporate estimated tax and surcharge — 4th estimate (
 calendar-year S corporation or C corporation)
DESCRIPTION:Applies to: A corporation required to pay Wisconsin estimated t
 ax pays by the 15th day of the 4th\, 6th\, 9th and 12th months of its taxa
 ble year. A corporation receiving an extension also pays by the 15th day o
 f the 4th month after the year ends\; the profile cannot say whether it ha
 s an extension\, so that payment is not dated here. A fiscal year beginnin
 g in April (a March year-end) pays its first installment June 15 and is no
 t covered here.\nDue rule: 1st estimate: 15th day of the 4th month of the 
 tax year\; 2nd estimate: 15th day of the 6th month of the tax year\; 3rd e
 stimate: 15th day of the 9th month of the tax year\; 4th estimate: 15th da
 y of the 12th month of the tax year\nState legal holidays are not compiled
 : if this date is a state holiday\, the deadline moves to the next busines
 s day.\nSource: https://www.revenue.wi.gov/Pages/OnlineServices/voucher-co
 rp-es.aspx (retrieved 2026-09-23)\nA reminder only: confirm with the sourc
 e before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/OnlineServices/voucher-corp-
 es.aspx
CATEGORIES:Wisconsin,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Corporate estimated tax and surcharge — 4th estima
 te (calendar-year S corporation or C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Corporate estimated tax and surcharge — 4th estima
 te (calendar-year S corporation or C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-ST-12:2027-11-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271231
DTEND;VALUE=DATE:20280101
SUMMARY:Wisconsin: Sales and use tax return — Sales and use tax return (m
 onthly filer)
DESCRIPTION:Applies to: A retailer the preparer attests is not an early mon
 thly filer files returns by the last day of the month after the reporting 
 period (monthly\, quarterly or annual). Early monthly filers (due the 20th
 ) are not covered here. The department may grant one more month to file on
  request\; tax not paid by the original date bears interest.\nDue rule: Sa
 les and use tax return: last day of the month after the month ends\nState 
 legal holidays are not compiled: if this date is a state holiday\, the dea
 dline moves to the next business day.\nExtended due date: 2028-01-31\nSour
 ce: https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx (retrieved 2026-0
 9-23)\nA reminder only: confirm with the source before filing. You file\; 
 this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/Pages/FAQS/pcs-sales.aspx
CATEGORIES:Wisconsin,sales-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Sales and use tax return — Sales and use tax retur
 n (monthly filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:wi:WI-WT-6:2027-11-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271231
DTEND;VALUE=DATE:20280101
SUMMARY:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly with
 holding filer)
DESCRIPTION:Applies to: By assigned frequency: monthly and quarterly filers
  by the last day of the month after the period\; annual filers file no dep
 osit report. Semi-monthly filers are not dated here.\nDue rule: WT-6: last
  day of the month after the month ends\nState legal holidays are not compi
 led: if this date is a state holiday\, the deadline moves to the next busi
 ness day.\nSource: https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
  (retrieved 2026-09-23)\nA reminder only: confirm with the source before f
 iling. You file\; this calendar reminds.
URL;VALUE=URI:https://www.revenue.wi.gov/DOR%20Publications/pb401.pdf
CATEGORIES:Wisconsin,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Wisconsin: Withholding deposit report (WT-6) — WT-6 (monthly 
 withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
END:VCALENDAR