BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Lyra Ventures LLC//FilingDates public calendars//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
NAME:Montana business filing dates\, 2027 (FilingDates)
X-WR-CALNAME:Montana business filing dates\, 2027 (FilingDates)
DESCRIPTION:Montana 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.
X-WR-CALDESC:Montana business filing dates\, 2027. Each event links the off
 icial source it was computed from. Obligations without a verified source a
 re not in this feed\; the web page lists them as unsupported. A reminder o
 nly: confirm with the source before filing.
REFRESH-INTERVAL;VALUE=DURATION:P1D
X-PUBLISHED-TTL:P1D
BEGIN:VEVENT
UID:mt:MT-individual-estimates:2026-01-01:3@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270115
DTEND;VALUE=DATE:20270116
SUMMARY:Montana: Individual estimated tax — 4th payment (calendar-year Sc
 hedule C filer)
DESCRIPTION:Applies to: An individual (including a sole proprietor) paying 
 Montana estimated tax pays by the 15th day of the 4th\, 6th and 9th months
  of the tax year and the 1st month after it (April 15\, June 15\, Septembe
 r 15\, January 15 for calendar-year filers)\; a weekend or holiday date mo
 ves to the next business day.\nDue rule: 1st payment: 15th day of the 4th 
 month of the tax year\; 2nd payment: 15th day of the 6th month of the tax 
 year\; 3rd payment: 15th day of the 9th month of the tax year\; 4th paymen
 t: 15th 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://revenue.mt.gov/taxes/estimated-tax-pa
 yments (retrieved 2026-09-23)\nA reminder only: confirm with the source be
 fore filing. You file\; this calendar reminds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/estimated-tax-payments
CATEGORIES:Montana,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Individual estimated tax — 4th payment (calendar-yea
 r Schedule C filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Individual estimated tax — 4th payment (calendar-yea
 r Schedule C filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-withholding-payments:2026-12-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270115
DTEND;VALUE=DATE:20270116
SUMMARY:Montana: Wage withholding payments — Monthly withholding payment 
 (monthly withholding filer)
DESCRIPTION:Applies to: Payment schedule by total withholding: up to $1\,19
 9 annual\, by January 31\; $1\,200 to $11\,999 monthly\, by the 15th of th
 e following month\; $12\,000 or more accelerated\, on the federal semiweek
 ly schedule.\nDue rule: Monthly withholding payment: 15th day of the month
  after the month ends\nSource: https://revenue.mt.gov/taxes/withholding-ta
 x/wage-withholding-returns-and-payments (retrieved 2026-09-23)\nA reminder
  only: confirm with the source before filing. You file\; this calendar rem
 inds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments
CATEGORIES:Montana,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-withholding-payments:2026-01-01:0:annual@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270131
DTEND;VALUE=DATE:20270201
SUMMARY:Montana: Wage withholding payments — Annual withholding payment (
 annual withholding filer)
DESCRIPTION:Applies to: Payment schedule by total withholding: up to $1\,19
 9 annual\, by January 31\; $1\,200 to $11\,999 monthly\, by the 15th of th
 e following month\; $12\,000 or more accelerated\, on the federal semiweek
 ly schedule.\nDue rule: Annual withholding payment: January 31 of the year
  after the calendar year ends\nFalls on a Sunday\; the source states no we
 ekend rule.\nSource: https://revenue.mt.gov/taxes/withholding-tax/wage-wit
 hholding-returns-and-payments (retrieved 2026-09-23)\nA reminder only: con
 firm with the source before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments
CATEGORIES:Montana,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Annual withholding payme
 nt (annual withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Annual withholding payme
 nt (annual withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-MW-3:2026-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:Montana: Annual W-2/1099 withholding reconciliation (MW-3) — Form
  MW-3
DESCRIPTION:Applies to: An employer with an open Montana withholding accoun
 t (the preparer declares the Montana withholding filing schedule the Depar
 tment assigned it) files the MW-3 annual reconciliation every year\, with 
 all Forms W-2 and the Forms 1099 showing Montana withholding\, by January 
 31\; a weekend due date moves to the next business day. An employer that h
 as not declared a Montana withholding schedule is not dated by this line.\
 nDue rule: Form MW-3: January 31 of the year after the calendar year ends\
 nStated date 2027-01-31\, moved to the next business day.\nState legal hol
 idays are not compiled: if this date is a state holiday\, the deadline mov
 es to the next business day.\nSource: https://revenue.mt.gov/taxes/withhol
 ding-tax/wage-withholding-returns-and-payments (retrieved 2026-09-23)\nA r
 eminder only: confirm with the source before filing. You file\; this calen
 dar reminds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments
CATEGORIES:Montana,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Annual W-2/1099 withholding reconciliation (MW-3) — 
 Form MW-3
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Annual W-2/1099 withholding reconciliation (MW-3) — 
 Form MW-3
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-withholding-payments:2027-01-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270215
DTEND;VALUE=DATE:20270216
SUMMARY:Montana: Wage withholding payments — Monthly withholding payment 
 (monthly withholding filer)
DESCRIPTION:Applies to: Payment schedule by total withholding: up to $1\,19
 9 annual\, by January 31\; $1\,200 to $11\,999 monthly\, by the 15th of th
 e following month\; $12\,000 or more accelerated\, on the federal semiweek
 ly schedule.\nDue rule: Monthly withholding payment: 15th day of the month
  after the month ends\nSource: https://revenue.mt.gov/taxes/withholding-ta
 x/wage-withholding-returns-and-payments (retrieved 2026-09-23)\nA reminder
  only: confirm with the source before filing. You file\; this calendar rem
 inds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments
CATEGORIES:Montana,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-pass-through:2026-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270315
DTEND;VALUE=DATE:20270316
SUMMARY:Montana: Pass-through entity return (Form PTE) — Form PTE (calend
 ar-year S corporation or partnership)
DESCRIPTION:Applies to: A partnership or S corporation with Montana-source 
 income\, registered with the Montana Secretary of State\, or electing Mont
 ana PTET (the preparer attests any one) files Form PTE by March 15 after a
  calendar year\, or the 15th day of the 3rd month after a fiscal year clos
 es. The 2025 instructions move March 15\, 2026 (a Sunday) to March 16\, so
  a weekend date is shown on the next business day. An automatic extension 
 of up to six months (September 15 for calendar-year filers) is for filing 
 only. An entity required to file only because it filed a prior-year return
  is not covered here.\nDue rule: Form PTE: 15th day of the 3rd 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: 2027-09-15\nSource: https://revenue.mt.gov/taxes/pass-through-en
 tities (retrieved 2026-09-23)\nA reminder only: confirm with the source be
 fore filing. You file\; this calendar reminds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/pass-through-entities
CATEGORIES:Montana,income-franchise-return
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Pass-through entity return (Form PTE) — Form PTE (ca
 lendar-year S corporation or partnership)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Pass-through entity return (Form PTE) — Form PTE (ca
 lendar-year S corporation or partnership)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-withholding-payments:2027-02-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270315
DTEND;VALUE=DATE:20270316
SUMMARY:Montana: Wage withholding payments — Monthly withholding payment 
 (monthly withholding filer)
DESCRIPTION:Applies to: Payment schedule by total withholding: up to $1\,19
 9 annual\, by January 31\; $1\,200 to $11\,999 monthly\, by the 15th of th
 e following month\; $12\,000 or more accelerated\, on the federal semiweek
 ly schedule.\nDue rule: Monthly withholding payment: 15th day of the month
  after the month ends\nSource: https://revenue.mt.gov/taxes/withholding-ta
 x/wage-withholding-returns-and-payments (retrieved 2026-09-23)\nA reminder
  only: confirm with the source before filing. You file\; this calendar rem
 inds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments
CATEGORIES:Montana,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-corp-estimates:2027-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270415
DTEND;VALUE=DATE:20270416
SUMMARY:Montana: Corporate estimated tax — 1st estimate (calendar-year C 
 corporation)
DESCRIPTION:Applies to: A corporation estimating $5\,000 or more of tax pay
 s quarterly estimates by the 15th day of the 4th\, 6th\, 9th and 12th mont
 hs of its tax year (April 15\, June 15\, September 15\, December 15 for ca
 lendar-year filers). The page states its weekend rule for returns only\, s
 o estimate dates are shown as stated.\nDue rule: 1st estimate: 15th day of
  the 4th month of the tax year\; 2nd estimate: 15th day of the 6th month o
 f 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\nSource: https:/
 /mtrevenue.gov/taxes/corporate-income-tax (retrieved 2026-09-23)\nA remind
 er only: confirm with the source before filing. You file\; this calendar r
 eminds.
URL;VALUE=URI:https://mtrevenue.gov/taxes/corporate-income-tax
CATEGORIES:Montana,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Corporate estimated tax — 1st estimate (calendar-yea
 r C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Corporate estimated tax — 1st estimate (calendar-yea
 r C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-individual-estimates:2027-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270415
DTEND;VALUE=DATE:20270416
SUMMARY:Montana: Individual estimated tax — 1st payment (calendar-year Sc
 hedule C filer)
DESCRIPTION:Applies to: An individual (including a sole proprietor) paying 
 Montana estimated tax pays by the 15th day of the 4th\, 6th and 9th months
  of the tax year and the 1st month after it (April 15\, June 15\, Septembe
 r 15\, January 15 for calendar-year filers)\; a weekend or holiday date mo
 ves to the next business day.\nDue rule: 1st payment: 15th day of the 4th 
 month of the tax year\; 2nd payment: 15th day of the 6th month of the tax 
 year\; 3rd payment: 15th day of the 9th month of the tax year\; 4th paymen
 t: 15th 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://revenue.mt.gov/taxes/estimated-tax-pa
 yments (retrieved 2026-09-23)\nA reminder only: confirm with the source be
 fore filing. You file\; this calendar reminds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/estimated-tax-payments
CATEGORIES:Montana,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Individual estimated tax — 1st payment (calendar-yea
 r Schedule C filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Individual estimated tax — 1st payment (calendar-yea
 r Schedule C filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-withholding-payments:2027-03-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270415
DTEND;VALUE=DATE:20270416
SUMMARY:Montana: Wage withholding payments — Monthly withholding payment 
 (monthly withholding filer)
DESCRIPTION:Applies to: Payment schedule by total withholding: up to $1\,19
 9 annual\, by January 31\; $1\,200 to $11\,999 monthly\, by the 15th of th
 e following month\; $12\,000 or more accelerated\, on the federal semiweek
 ly schedule.\nDue rule: Monthly withholding payment: 15th day of the month
  after the month ends\nSource: https://revenue.mt.gov/taxes/withholding-ta
 x/wage-withholding-returns-and-payments (retrieved 2026-09-23)\nA reminder
  only: confirm with the source before filing. You file\; this calendar rem
 inds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments
CATEGORIES:Montana,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-withholding-payments:2027-04-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270515
DTEND;VALUE=DATE:20270516
SUMMARY:Montana: Wage withholding payments — Monthly withholding payment 
 (monthly withholding filer)
DESCRIPTION:Applies to: Payment schedule by total withholding: up to $1\,19
 9 annual\, by January 31\; $1\,200 to $11\,999 monthly\, by the 15th of th
 e following month\; $12\,000 or more accelerated\, on the federal semiweek
 ly schedule.\nDue rule: Monthly withholding payment: 15th day of the month
  after the month ends\nFalls on a Saturday\; the source states no weekend 
 rule.\nSource: https://revenue.mt.gov/taxes/withholding-tax/wage-withholdi
 ng-returns-and-payments (retrieved 2026-09-23)\nA reminder only: confirm w
 ith the source before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments
CATEGORIES:Montana,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-CIT:2026-01-01:0@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270517
DTEND;VALUE=DATE:20270518
SUMMARY:Montana: Form CIT corporate income tax return — Form CIT (calenda
 r-year C corporation)
DESCRIPTION:Applies to: A corporation's Form CIT is due May 15 for calendar
 -year filers\, or the 15th day of the 5th month after a fiscal year ends. 
 An automatic six-month extension (to the 15th day of the 11th month) cover
 s the return only\; tax is due by the original date.\nDue rule: Form CIT: 
 15th day 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.\nExtended due date: 2027-11-15\nSource: https://mtrevenue.gov/taxes/c
 orporate-income-tax (retrieved 2026-09-23)\nA reminder only: confirm with 
 the source before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://mtrevenue.gov/taxes/corporate-income-tax
CATEGORIES:Montana,income-franchise-return
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Form CIT corporate income tax return — Form CIT (cal
 endar-year C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Form CIT corporate income tax return — Form CIT (cal
 endar-year C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-corp-estimates:2027-01-01:1@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270615
DTEND;VALUE=DATE:20270616
SUMMARY:Montana: Corporate estimated tax — 2nd estimate (calendar-year C 
 corporation)
DESCRIPTION:Applies to: A corporation estimating $5\,000 or more of tax pay
 s quarterly estimates by the 15th day of the 4th\, 6th\, 9th and 12th mont
 hs of its tax year (April 15\, June 15\, September 15\, December 15 for ca
 lendar-year filers). The page states its weekend rule for returns only\, s
 o estimate dates are shown as stated.\nDue rule: 1st estimate: 15th day of
  the 4th month of the tax year\; 2nd estimate: 15th day of the 6th month o
 f 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\nSource: https:/
 /mtrevenue.gov/taxes/corporate-income-tax (retrieved 2026-09-23)\nA remind
 er only: confirm with the source before filing. You file\; this calendar r
 eminds.
URL;VALUE=URI:https://mtrevenue.gov/taxes/corporate-income-tax
CATEGORIES:Montana,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Corporate estimated tax — 2nd estimate (calendar-yea
 r C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Corporate estimated tax — 2nd estimate (calendar-yea
 r C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-individual-estimates:2027-01-01:1@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270615
DTEND;VALUE=DATE:20270616
SUMMARY:Montana: Individual estimated tax — 2nd payment (calendar-year Sc
 hedule C filer)
DESCRIPTION:Applies to: An individual (including a sole proprietor) paying 
 Montana estimated tax pays by the 15th day of the 4th\, 6th and 9th months
  of the tax year and the 1st month after it (April 15\, June 15\, Septembe
 r 15\, January 15 for calendar-year filers)\; a weekend or holiday date mo
 ves to the next business day.\nDue rule: 1st payment: 15th day of the 4th 
 month of the tax year\; 2nd payment: 15th day of the 6th month of the tax 
 year\; 3rd payment: 15th day of the 9th month of the tax year\; 4th paymen
 t: 15th 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://revenue.mt.gov/taxes/estimated-tax-pa
 yments (retrieved 2026-09-23)\nA reminder only: confirm with the source be
 fore filing. You file\; this calendar reminds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/estimated-tax-payments
CATEGORIES:Montana,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Individual estimated tax — 2nd payment (calendar-yea
 r Schedule C filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Individual estimated tax — 2nd payment (calendar-yea
 r Schedule C filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-withholding-payments:2027-05-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270615
DTEND;VALUE=DATE:20270616
SUMMARY:Montana: Wage withholding payments — Monthly withholding payment 
 (monthly withholding filer)
DESCRIPTION:Applies to: Payment schedule by total withholding: up to $1\,19
 9 annual\, by January 31\; $1\,200 to $11\,999 monthly\, by the 15th of th
 e following month\; $12\,000 or more accelerated\, on the federal semiweek
 ly schedule.\nDue rule: Monthly withholding payment: 15th day of the month
  after the month ends\nSource: https://revenue.mt.gov/taxes/withholding-ta
 x/wage-withholding-returns-and-payments (retrieved 2026-09-23)\nA reminder
  only: confirm with the source before filing. You file\; this calendar rem
 inds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments
CATEGORIES:Montana,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-withholding-payments:2027-06-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270715
DTEND;VALUE=DATE:20270716
SUMMARY:Montana: Wage withholding payments — Monthly withholding payment 
 (monthly withholding filer)
DESCRIPTION:Applies to: Payment schedule by total withholding: up to $1\,19
 9 annual\, by January 31\; $1\,200 to $11\,999 monthly\, by the 15th of th
 e following month\; $12\,000 or more accelerated\, on the federal semiweek
 ly schedule.\nDue rule: Monthly withholding payment: 15th day of the month
  after the month ends\nSource: https://revenue.mt.gov/taxes/withholding-ta
 x/wage-withholding-returns-and-payments (retrieved 2026-09-23)\nA reminder
  only: confirm with the source before filing. You file\; this calendar rem
 inds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments
CATEGORIES:Montana,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-withholding-payments:2027-07-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270815
DTEND;VALUE=DATE:20270816
SUMMARY:Montana: Wage withholding payments — Monthly withholding payment 
 (monthly withholding filer)
DESCRIPTION:Applies to: Payment schedule by total withholding: up to $1\,19
 9 annual\, by January 31\; $1\,200 to $11\,999 monthly\, by the 15th of th
 e following month\; $12\,000 or more accelerated\, on the federal semiweek
 ly schedule.\nDue rule: Monthly withholding payment: 15th day of the month
  after the month ends\nFalls on a Sunday\; the source states no weekend ru
 le.\nSource: https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments (retrieved 2026-09-23)\nA reminder only: confirm wit
 h the source before filing. You file\; this calendar reminds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments
CATEGORIES:Montana,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-corp-estimates:2027-01-01:2@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270915
DTEND;VALUE=DATE:20270916
SUMMARY:Montana: Corporate estimated tax — 3rd estimate (calendar-year C 
 corporation)
DESCRIPTION:Applies to: A corporation estimating $5\,000 or more of tax pay
 s quarterly estimates by the 15th day of the 4th\, 6th\, 9th and 12th mont
 hs of its tax year (April 15\, June 15\, September 15\, December 15 for ca
 lendar-year filers). The page states its weekend rule for returns only\, s
 o estimate dates are shown as stated.\nDue rule: 1st estimate: 15th day of
  the 4th month of the tax year\; 2nd estimate: 15th day of the 6th month o
 f 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\nSource: https:/
 /mtrevenue.gov/taxes/corporate-income-tax (retrieved 2026-09-23)\nA remind
 er only: confirm with the source before filing. You file\; this calendar r
 eminds.
URL;VALUE=URI:https://mtrevenue.gov/taxes/corporate-income-tax
CATEGORIES:Montana,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Corporate estimated tax — 3rd estimate (calendar-yea
 r C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Corporate estimated tax — 3rd estimate (calendar-yea
 r C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-individual-estimates:2027-01-01:2@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270915
DTEND;VALUE=DATE:20270916
SUMMARY:Montana: Individual estimated tax — 3rd payment (calendar-year Sc
 hedule C filer)
DESCRIPTION:Applies to: An individual (including a sole proprietor) paying 
 Montana estimated tax pays by the 15th day of the 4th\, 6th and 9th months
  of the tax year and the 1st month after it (April 15\, June 15\, Septembe
 r 15\, January 15 for calendar-year filers)\; a weekend or holiday date mo
 ves to the next business day.\nDue rule: 1st payment: 15th day of the 4th 
 month of the tax year\; 2nd payment: 15th day of the 6th month of the tax 
 year\; 3rd payment: 15th day of the 9th month of the tax year\; 4th paymen
 t: 15th 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://revenue.mt.gov/taxes/estimated-tax-pa
 yments (retrieved 2026-09-23)\nA reminder only: confirm with the source be
 fore filing. You file\; this calendar reminds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/estimated-tax-payments
CATEGORIES:Montana,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Individual estimated tax — 3rd payment (calendar-yea
 r Schedule C filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Individual estimated tax — 3rd payment (calendar-yea
 r Schedule C filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-withholding-payments:2027-08-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20270915
DTEND;VALUE=DATE:20270916
SUMMARY:Montana: Wage withholding payments — Monthly withholding payment 
 (monthly withholding filer)
DESCRIPTION:Applies to: Payment schedule by total withholding: up to $1\,19
 9 annual\, by January 31\; $1\,200 to $11\,999 monthly\, by the 15th of th
 e following month\; $12\,000 or more accelerated\, on the federal semiweek
 ly schedule.\nDue rule: Monthly withholding payment: 15th day of the month
  after the month ends\nSource: https://revenue.mt.gov/taxes/withholding-ta
 x/wage-withholding-returns-and-payments (retrieved 2026-09-23)\nA reminder
  only: confirm with the source before filing. You file\; this calendar rem
 inds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments
CATEGORIES:Montana,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-withholding-payments:2027-09-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271015
DTEND;VALUE=DATE:20271016
SUMMARY:Montana: Wage withholding payments — Monthly withholding payment 
 (monthly withholding filer)
DESCRIPTION:Applies to: Payment schedule by total withholding: up to $1\,19
 9 annual\, by January 31\; $1\,200 to $11\,999 monthly\, by the 15th of th
 e following month\; $12\,000 or more accelerated\, on the federal semiweek
 ly schedule.\nDue rule: Monthly withholding payment: 15th day of the month
  after the month ends\nSource: https://revenue.mt.gov/taxes/withholding-ta
 x/wage-withholding-returns-and-payments (retrieved 2026-09-23)\nA reminder
  only: confirm with the source before filing. You file\; this calendar rem
 inds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments
CATEGORIES:Montana,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-withholding-payments:2027-10-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271115
DTEND;VALUE=DATE:20271116
SUMMARY:Montana: Wage withholding payments — Monthly withholding payment 
 (monthly withholding filer)
DESCRIPTION:Applies to: Payment schedule by total withholding: up to $1\,19
 9 annual\, by January 31\; $1\,200 to $11\,999 monthly\, by the 15th of th
 e following month\; $12\,000 or more accelerated\, on the federal semiweek
 ly schedule.\nDue rule: Monthly withholding payment: 15th day of the month
  after the month ends\nSource: https://revenue.mt.gov/taxes/withholding-ta
 x/wage-withholding-returns-and-payments (retrieved 2026-09-23)\nA reminder
  only: confirm with the source before filing. You file\; this calendar rem
 inds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments
CATEGORIES:Montana,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-corp-estimates:2027-01-01:3@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271215
DTEND;VALUE=DATE:20271216
SUMMARY:Montana: Corporate estimated tax — 4th estimate (calendar-year C 
 corporation)
DESCRIPTION:Applies to: A corporation estimating $5\,000 or more of tax pay
 s quarterly estimates by the 15th day of the 4th\, 6th\, 9th and 12th mont
 hs of its tax year (April 15\, June 15\, September 15\, December 15 for ca
 lendar-year filers). The page states its weekend rule for returns only\, s
 o estimate dates are shown as stated.\nDue rule: 1st estimate: 15th day of
  the 4th month of the tax year\; 2nd estimate: 15th day of the 6th month o
 f 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\nSource: https:/
 /mtrevenue.gov/taxes/corporate-income-tax (retrieved 2026-09-23)\nA remind
 er only: confirm with the source before filing. You file\; this calendar r
 eminds.
URL;VALUE=URI:https://mtrevenue.gov/taxes/corporate-income-tax
CATEGORIES:Montana,estimated-tax
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Corporate estimated tax — 4th estimate (calendar-yea
 r C corporation)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Corporate estimated tax — 4th estimate (calendar-yea
 r C corporation)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:mt:MT-withholding-payments:2027-11-01:0:monthly@filingdates.com
DTSTAMP:20260923T000000Z
DTSTART;VALUE=DATE:20271215
DTEND;VALUE=DATE:20271216
SUMMARY:Montana: Wage withholding payments — Monthly withholding payment 
 (monthly withholding filer)
DESCRIPTION:Applies to: Payment schedule by total withholding: up to $1\,19
 9 annual\, by January 31\; $1\,200 to $11\,999 monthly\, by the 15th of th
 e following month\; $12\,000 or more accelerated\, on the federal semiweek
 ly schedule.\nDue rule: Monthly withholding payment: 15th day of the month
  after the month ends\nSource: https://revenue.mt.gov/taxes/withholding-ta
 x/wage-withholding-returns-and-payments (retrieved 2026-09-23)\nA reminder
  only: confirm with the source before filing. You file\; this calendar rem
 inds.
URL;VALUE=URI:https://revenue.mt.gov/taxes/withholding-tax/wage-withholding
 -returns-and-payments
CATEGORIES:Montana,withholding
SEQUENCE:0
TRANSP:TRANSPARENT
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-P6DT15H
END:VALARM
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Montana: Wage withholding payments — Monthly withholding paym
 ent (monthly withholding filer)
TRIGGER:-PT15H
END:VALARM
END:VEVENT
END:VCALENDAR