BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Lyra Ventures LLC//FilingDates public calendars//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
NAME:Oregon business filing dates\, 2027 (FilingDates)
X-WR-CALNAME:Oregon business filing dates\, 2027 (FilingDates)
DESCRIPTION:Oregon business filing dates\, 2027. Each event links the offic
 ial source it was computed from. Obligations without a verified source are
  not in this feed\; the web page lists them as unsupported. A reminder onl
 y: confirm with the source before filing.
X-WR-CALDESC:Oregon business filing dates\, 2027. Each event links the offi
 cial source it was computed from. Obligations without a verified source ar
 e not in this feed\; the web page lists them as unsupported. A reminder on
 ly: confirm with the source before filing.
REFRESH-INTERVAL;VALUE=DURATION:P1D
X-PUBLISHED-TTL:P1D
BEGIN:VEVENT
UID:or:OR-WR:2026-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270131
DTEND;VALUE=DATE:20270201
SUMMARY:Oregon: Annual withholding reconciliation (Form WR) and W-2s — Fo
 rm WR and W-2s
DESCRIPTION:Applies to: An employer the preparer attests withholds Oregon i
 ncome tax files Form WR and Forms W-2 (and 1099-NEC) by January 31\; other
  Forms 1099 are due March 31 (not dated here). The source states no weeken
 d rule\, so the stated date is shown.\nDue rule: Form WR and W-2s: January
  31 of the year after the calendar year ends\nFalls on a Sunday\; the sour
 ce states no weekend rule.\nSource: https://www.oregon.gov/dor/programs/bu
 sinesses/pages/iwire-troubleshooting.aspx (retrieved 2026-09-23)\nA remind
 er only: confirm with the source before filing. You file\; this calendar r
 eminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/pages/iwire-tr
 oubleshooting.aspx
CATEGORIES:Oregon,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Annual withholding reconciliation (Form WR) and W-2s 
 — Form WR and W-2s
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Annual withholding reconciliation (Form WR) and W-2s 
 — Form WR and W-2s
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-CAT-estimates:2026-01-01:3@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:Oregon: Corporate activity tax estimated payments — 4th CAT estim
 ate (calendar-year filer)
DESCRIPTION:Applies to: A business the preparer attests expects $5\,000 or 
 more of Oregon corporate activity tax pays estimates by the last day of th
 e 4th\, 7th and 10th months of its tax year and the last day of the 1st mo
 nth after it\; a weekend or holiday date moves to the following business d
 ay.\nDue rule: 1st CAT estimate: last day of the 4th month of the tax year
 \; 2nd CAT estimate: last day of the 7th month of the tax year\; 3rd CAT e
 stimate: last day of the 10th month of the tax year\; 4th CAT estimate: la
 st day of the month after the tax year ends\nStated date 2027-01-31\, move
 d to the next business day.\nState legal holidays are not compiled: if thi
 s date is a state holiday\, the deadline moves to the next business day.\n
 Source: https://www.oregon.gov/dor/programs/businesses/Pages/corporate-act
 ivity-tax.aspx (retrieved 2026-09-23)\nA reminder only: confirm with the s
 ource before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/corporat
 e-activity-tax.aspx
CATEGORIES:Oregon,entity-tax-fee
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporate activity tax estimated payments — 4th CAT e
 stimate (calendar-year filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporate activity tax estimated payments — 4th CAT e
 stimate (calendar-year filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-OQ:2026-10-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:Oregon: Combined payroll quarterly report (Form OQ) — Form OQ
DESCRIPTION:Applies to: An employer the preparer lists as a quarterly Orego
 n payroll (unemployment) filer pays unemployment\, transit tax and Workers
 ' Benefit Fund amounts and files Form OQ by the last day of the month afte
 r each quarter (April 30\, July 31\, October 31\, January 31)\; a weekend 
 or holiday date moves to the next business day.\nDue rule: Form OQ: last d
 ay of the month after the quarter 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.oregon.gov/dor/programs/businesses/Pages/Withholding-and-Pa
 yroll-tax.aspx (retrieved 2026-09-23)\nA reminder only: confirm with the s
 ource before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/Withhold
 ing-and-Payroll-tax.aspx
CATEGORIES:Oregon,unemployment-insurance
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Combined payroll quarterly report (Form OQ) — Form OQ
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Combined payroll quarterly report (Form OQ) — Form OQ
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-20-S:2026-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270415
DTEND;VALUE=DATE:20270416
SUMMARY:Oregon: Form OR-20-S S corporation return — Form OR-20-S (calenda
 r-year S corporation)
DESCRIPTION:Applies to: A calendar-year S corporation that the preparer att
 ests does business in Oregon or has Oregon-source income: its Oregon retur
 n is due April 15\, the 15th day of the month after its federal due date (
 the page's own example: federal March 15\, Oregon April 15). Fiscal-year f
 ilers key on their federal due date and are not covered. A federal Form 70
 04 extension moves the Oregon date to the 15th day of the month after the 
 federal extended date\, which this line does not compute. A weekend or sta
 te-holiday date moves to the next business day.\nDue rule: Form OR-20-S: 1
 5th day of the 4th month after the tax year ends\nState legal holidays are
  not compiled: if this date is a state holiday\, the deadline moves to the
  next business day.\nSource: https://www.oregon.gov/dor/programs/businesse
 s/Pages/corp-requirements.aspx (retrieved 2026-09-23)\nA reminder only: co
 nfirm with the source before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/corp-req
 uirements.aspx
CATEGORIES:Oregon,income-franchise-return
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Form OR-20-S S corporation return — Form OR-20-S (cal
 endar-year S corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Form OR-20-S S corporation return — Form OR-20-S (cal
 endar-year S corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-CAT-return:2026-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270415
DTEND;VALUE=DATE:20270416
SUMMARY:Oregon: Corporate activity tax annual return — CAT return (calend
 ar-year filer)
DESCRIPTION:Applies to: A business the preparer attests has more than $1 mi
 llion of Oregon commercial activity (the CAT filing threshold) and is not 
 an entity the CAT excludes (such as nonprofits\, government entities and h
 ospitals\, per ORS 317A.100(4)) files its corporate activity tax return by
  the 15th day of the 4th month after its tax year\; a weekend or holiday d
 ate moves to the following business day. For tax years from 2024 a seven-m
 onth filing extension is available: automatic with a federal extension\, o
 therwise by Form OR-EXT-CAT by the original due date. It is not an extensi
 on to pay.\nDue rule: CAT return: 15th day of the 4th month after the tax 
 year ends\nState legal holidays are not compiled: if this date is a state 
 holiday\, the deadline moves to the next business day.\nExtended due date 
 (OR-EXT-CAT or federal extension): 2027-11-15\nSource: https://www.oregon.
 gov/dor/programs/businesses/Pages/corporate-activity-tax.aspx (retrieved 2
 026-09-23)\nA reminder only: confirm with the source before filing. You fi
 le\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/corporat
 e-activity-tax.aspx
CATEGORIES:Oregon,entity-tax-fee
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporate activity tax annual return — CAT return (ca
 lendar-year filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporate activity tax annual return — CAT return (ca
 lendar-year filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-corp-estimates:2027-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270415
DTEND;VALUE=DATE:20270416
SUMMARY:Oregon: Corporation estimated tax — 1st estimate (calendar-year S
  corporation or C corporation)
DESCRIPTION:Applies to: A corporation expecting to owe $500 or more pays qu
 arterly estimates by the 15th day of the 4th\, 6th\, 9th and 12th months o
 f its tax year (April 15\, June 15\, September 15\, December 15 for calend
 ar-year filers)\; a Saturday\, Sunday or legal-holiday date moves to the n
 ext business day.\nDue rule: 1st estimate: 15th day of the 4th month of th
 e tax year\; 2nd estimate: 15th day of the 6th month of the tax year\; 3rd
  estimate: 15th day of the 9th month of the tax year\; 4th estimate: 15th 
 day of the 12th month of the tax year\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.oregon.gov/dor/programs/businesses/Pages/cor
 p-requirements.aspx (retrieved 2026-09-23)\nA reminder only: confirm with 
 the source before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/corp-req
 uirements.aspx
CATEGORIES:Oregon,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporation estimated tax — 1st estimate (calendar-ye
 ar S corporation or C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporation estimated tax — 1st estimate (calendar-ye
 ar S corporation or C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-CAT-estimates:2027-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270430
DTEND;VALUE=DATE:20270501
SUMMARY:Oregon: Corporate activity tax estimated payments — 1st CAT estim
 ate (calendar-year filer)
DESCRIPTION:Applies to: A business the preparer attests expects $5\,000 or 
 more of Oregon corporate activity tax pays estimates by the last day of th
 e 4th\, 7th and 10th months of its tax year and the last day of the 1st mo
 nth after it\; a weekend or holiday date moves to the following business d
 ay.\nDue rule: 1st CAT estimate: last day of the 4th month of the tax year
 \; 2nd CAT estimate: last day of the 7th month of the tax year\; 3rd CAT e
 stimate: last day of the 10th month of the tax year\; 4th CAT estimate: la
 st day of the month after the tax year ends\nState legal holidays are not 
 compiled: if this date is a state holiday\, the deadline moves to the next
  business day.\nSource: https://www.oregon.gov/dor/programs/businesses/Pag
 es/corporate-activity-tax.aspx (retrieved 2026-09-23)\nA reminder only: co
 nfirm with the source before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/corporat
 e-activity-tax.aspx
CATEGORIES:Oregon,entity-tax-fee
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporate activity tax estimated payments — 1st CAT e
 stimate (calendar-year filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporate activity tax estimated payments — 1st CAT e
 stimate (calendar-year filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-OQ:2027-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270430
DTEND;VALUE=DATE:20270501
SUMMARY:Oregon: Combined payroll quarterly report (Form OQ) — Form OQ
DESCRIPTION:Applies to: An employer the preparer lists as a quarterly Orego
 n payroll (unemployment) filer pays unemployment\, transit tax and Workers
 ' Benefit Fund amounts and files Form OQ by the last day of the month afte
 r each quarter (April 30\, July 31\, October 31\, January 31)\; a weekend 
 or holiday date moves to the next business day.\nDue rule: Form OQ: last d
 ay of the month after the quarter 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.oregon.gov/dor/programs/businesses/Pages/Wi
 thholding-and-Payroll-tax.aspx (retrieved 2026-09-23)\nA reminder only: co
 nfirm with the source before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/Withhold
 ing-and-Payroll-tax.aspx
CATEGORIES:Oregon,unemployment-insurance
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Combined payroll quarterly report (Form OQ) — Form OQ
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Combined payroll quarterly report (Form OQ) — Form OQ
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-20:2026-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270517
DTEND;VALUE=DATE:20270518
SUMMARY:Oregon: Form OR-20 corporation excise tax return — Form OR-20 (ca
 lendar-year C corporation)
DESCRIPTION:Applies to: A calendar-year C corporation that the preparer att
 ests does business in Oregon or has Oregon-source income: its Oregon retur
 n is due May 15\, the 15th day of the month after its federal due date (th
 e page's own example: federal April 15\, Oregon May 15). Fiscal-year filer
 s key on their federal due date and are not covered. A federal Form 7004 e
 xtension moves the Oregon date to the 15th day of the month after the fede
 ral extended date\, which this line does not compute. A weekend or state-h
 oliday date moves to the next business day.\nDue rule: Form OR-20: 15th da
 y of the 5th month after the tax year ends\nStated date 2027-05-15\, 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.\nS
 ource: https://www.oregon.gov/dor/programs/businesses/Pages/corp-requireme
 nts.aspx (retrieved 2026-09-23)\nA reminder only: confirm with the source 
 before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/corp-req
 uirements.aspx
CATEGORIES:Oregon,income-franchise-return
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Form OR-20 corporation excise tax return — Form OR-20
  (calendar-year C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Form OR-20 corporation excise tax return — Form OR-20
  (calendar-year C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-corp-estimates:2027-01-01:1@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270615
DTEND;VALUE=DATE:20270616
SUMMARY:Oregon: Corporation estimated tax — 2nd estimate (calendar-year S
  corporation or C corporation)
DESCRIPTION:Applies to: A corporation expecting to owe $500 or more pays qu
 arterly estimates by the 15th day of the 4th\, 6th\, 9th and 12th months o
 f its tax year (April 15\, June 15\, September 15\, December 15 for calend
 ar-year filers)\; a Saturday\, Sunday or legal-holiday date moves to the n
 ext business day.\nDue rule: 1st estimate: 15th day of the 4th month of th
 e tax year\; 2nd estimate: 15th day of the 6th month of the tax year\; 3rd
  estimate: 15th day of the 9th month of the tax year\; 4th estimate: 15th 
 day of the 12th month of the tax year\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.oregon.gov/dor/programs/businesses/Pages/cor
 p-requirements.aspx (retrieved 2026-09-23)\nA reminder only: confirm with 
 the source before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/corp-req
 uirements.aspx
CATEGORIES:Oregon,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporation estimated tax — 2nd estimate (calendar-ye
 ar S corporation or C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporation estimated tax — 2nd estimate (calendar-ye
 ar S corporation or C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-CAT-estimates:2027-01-01:1@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270802
DTEND;VALUE=DATE:20270803
SUMMARY:Oregon: Corporate activity tax estimated payments — 2nd CAT estim
 ate (calendar-year filer)
DESCRIPTION:Applies to: A business the preparer attests expects $5\,000 or 
 more of Oregon corporate activity tax pays estimates by the last day of th
 e 4th\, 7th and 10th months of its tax year and the last day of the 1st mo
 nth after it\; a weekend or holiday date moves to the following business d
 ay.\nDue rule: 1st CAT estimate: last day of the 4th month of the tax year
 \; 2nd CAT estimate: last day of the 7th month of the tax year\; 3rd CAT e
 stimate: last day of the 10th month of the tax year\; 4th CAT estimate: la
 st day of the month after the tax year ends\nStated date 2027-07-31\, move
 d to the next business day.\nState legal holidays are not compiled: if thi
 s date is a state holiday\, the deadline moves to the next business day.\n
 Source: https://www.oregon.gov/dor/programs/businesses/Pages/corporate-act
 ivity-tax.aspx (retrieved 2026-09-23)\nA reminder only: confirm with the s
 ource before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/corporat
 e-activity-tax.aspx
CATEGORIES:Oregon,entity-tax-fee
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporate activity tax estimated payments — 2nd CAT e
 stimate (calendar-year filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporate activity tax estimated payments — 2nd CAT e
 stimate (calendar-year filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-OQ:2027-04-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270802
DTEND;VALUE=DATE:20270803
SUMMARY:Oregon: Combined payroll quarterly report (Form OQ) — Form OQ
DESCRIPTION:Applies to: An employer the preparer lists as a quarterly Orego
 n payroll (unemployment) filer pays unemployment\, transit tax and Workers
 ' Benefit Fund amounts and files Form OQ by the last day of the month afte
 r each quarter (April 30\, July 31\, October 31\, January 31)\; a weekend 
 or holiday date moves to the next business day.\nDue rule: Form OQ: last d
 ay of the month after the quarter 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.oregon.gov/dor/programs/businesses/Pages/Withholding-and-Pa
 yroll-tax.aspx (retrieved 2026-09-23)\nA reminder only: confirm with the s
 ource before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/Withhold
 ing-and-Payroll-tax.aspx
CATEGORIES:Oregon,unemployment-insurance
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Combined payroll quarterly report (Form OQ) — Form OQ
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Combined payroll quarterly report (Form OQ) — Form OQ
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-corp-estimates:2027-01-01:2@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270915
DTEND;VALUE=DATE:20270916
SUMMARY:Oregon: Corporation estimated tax — 3rd estimate (calendar-year S
  corporation or C corporation)
DESCRIPTION:Applies to: A corporation expecting to owe $500 or more pays qu
 arterly estimates by the 15th day of the 4th\, 6th\, 9th and 12th months o
 f its tax year (April 15\, June 15\, September 15\, December 15 for calend
 ar-year filers)\; a Saturday\, Sunday or legal-holiday date moves to the n
 ext business day.\nDue rule: 1st estimate: 15th day of the 4th month of th
 e tax year\; 2nd estimate: 15th day of the 6th month of the tax year\; 3rd
  estimate: 15th day of the 9th month of the tax year\; 4th estimate: 15th 
 day of the 12th month of the tax year\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.oregon.gov/dor/programs/businesses/Pages/cor
 p-requirements.aspx (retrieved 2026-09-23)\nA reminder only: confirm with 
 the source before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/corp-req
 uirements.aspx
CATEGORIES:Oregon,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporation estimated tax — 3rd estimate (calendar-ye
 ar S corporation or C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporation estimated tax — 3rd estimate (calendar-ye
 ar S corporation or C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-CAT-estimates:2027-01-01:2@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271101
DTEND;VALUE=DATE:20271102
SUMMARY:Oregon: Corporate activity tax estimated payments — 3rd CAT estim
 ate (calendar-year filer)
DESCRIPTION:Applies to: A business the preparer attests expects $5\,000 or 
 more of Oregon corporate activity tax pays estimates by the last day of th
 e 4th\, 7th and 10th months of its tax year and the last day of the 1st mo
 nth after it\; a weekend or holiday date moves to the following business d
 ay.\nDue rule: 1st CAT estimate: last day of the 4th month of the tax year
 \; 2nd CAT estimate: last day of the 7th month of the tax year\; 3rd CAT e
 stimate: last day of the 10th month of the tax year\; 4th CAT estimate: la
 st day of the month after the tax year ends\nStated date 2027-10-31\, move
 d to the next business day.\nState legal holidays are not compiled: if thi
 s date is a state holiday\, the deadline moves to the next business day.\n
 Source: https://www.oregon.gov/dor/programs/businesses/Pages/corporate-act
 ivity-tax.aspx (retrieved 2026-09-23)\nA reminder only: confirm with the s
 ource before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/corporat
 e-activity-tax.aspx
CATEGORIES:Oregon,entity-tax-fee
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporate activity tax estimated payments — 3rd CAT e
 stimate (calendar-year filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporate activity tax estimated payments — 3rd CAT e
 stimate (calendar-year filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-OQ:2027-07-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271101
DTEND;VALUE=DATE:20271102
SUMMARY:Oregon: Combined payroll quarterly report (Form OQ) — Form OQ
DESCRIPTION:Applies to: An employer the preparer lists as a quarterly Orego
 n payroll (unemployment) filer pays unemployment\, transit tax and Workers
 ' Benefit Fund amounts and files Form OQ by the last day of the month afte
 r each quarter (April 30\, July 31\, October 31\, January 31)\; a weekend 
 or holiday date moves to the next business day.\nDue rule: Form OQ: last d
 ay of the month after the quarter 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.oregon.gov/dor/programs/businesses/Pages/Withholding-and-Pa
 yroll-tax.aspx (retrieved 2026-09-23)\nA reminder only: confirm with the s
 ource before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/Withhold
 ing-and-Payroll-tax.aspx
CATEGORIES:Oregon,unemployment-insurance
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Combined payroll quarterly report (Form OQ) — Form OQ
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Combined payroll quarterly report (Form OQ) — Form OQ
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:or:OR-corp-estimates:2027-01-01:3@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271215
DTEND;VALUE=DATE:20271216
SUMMARY:Oregon: Corporation estimated tax — 4th estimate (calendar-year S
  corporation or C corporation)
DESCRIPTION:Applies to: A corporation expecting to owe $500 or more pays qu
 arterly estimates by the 15th day of the 4th\, 6th\, 9th and 12th months o
 f its tax year (April 15\, June 15\, September 15\, December 15 for calend
 ar-year filers)\; a Saturday\, Sunday or legal-holiday date moves to the n
 ext business day.\nDue rule: 1st estimate: 15th day of the 4th month of th
 e tax year\; 2nd estimate: 15th day of the 6th month of the tax year\; 3rd
  estimate: 15th day of the 9th month of the tax year\; 4th estimate: 15th 
 day of the 12th month of the tax year\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.oregon.gov/dor/programs/businesses/Pages/cor
 p-requirements.aspx (retrieved 2026-09-23)\nA reminder only: confirm with 
 the source before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://www.oregon.gov/dor/programs/businesses/Pages/corp-req
 uirements.aspx
CATEGORIES:Oregon,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporation estimated tax — 4th estimate (calendar-ye
 ar S corporation or C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Oregon: Corporation estimated tax — 4th estimate (calendar-ye
 ar S corporation or C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
END:VCALENDAR