BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//MainStreetRadar//Key dates//EN
CALSCALE:GREGORIAN
METHOD:PUBLISH
X-WR-CALNAME:MainStreetRadar · US small business tax deadlines
X-WR-TIMEZONE:America/New_York
REFRESH-INTERVAL;VALUE=DURATION:P1D
BEGIN:VEVENT
UID:form-941-q3-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20261102
DTEND;VALUE=DATE:20261103
SUMMARY:Form 941 for Q3 2026
DESCRIPTION:Employers that withhold federal income\, Social Security and 
 Medicare tax from wages\n\nFile Form 941 for July to September 2026. Octo
 ber 31 is a Saturday\, so the deadline moves to Monday\; if you deposited
  all tax on time you have until November 10.\n\nGuide: https://mainstreet
 radar.com/deadlines/\nSource: https://www.irs.gov/publications/p509
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Form 941 for Q3 2026
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:corp-estimated-q4-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20261215
DTEND;VALUE=DATE:20261216
SUMMARY:Corporate estimated tax\, 4th installment 2026
DESCRIPTION:C corporations (calendar tax year) that expect to owe $500 or
  more\n\nPay the fourth 2026 estimated tax installment (worked out on For
 m 1120-W) through EFTPS.\n\nGuide: https://mainstreetradar.com/deadlines/
 \nSource: https://www.irs.gov/instructions/i1120
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Corporate estimated tax\, 4th installment 2026
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:estimated-tax-q4-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270115
DTEND;VALUE=DATE:20270116
SUMMARY:Estimated tax\, 4th payment for 2026
DESCRIPTION:Sole proprietors\, freelancers\, partners\, LLC members and S
 -corp shareholders who expect to owe $1\,000 or more\n\nPay the last 2026
  installment with Form 1040-ES. You can skip it if you file your 2026 ret
 urn and pay the full balance by February 1\, 2027.\n\nGuide: https://main
 streetradar.com/deadlines/\nSource: https://www.irs.gov/pub/irs-pdf/f1040
 es.pdf
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Estimated tax\, 4th payment for 2026
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:efile-season-2027@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270125
DTEND;VALUE=DATE:20270126
SUMMARY:2027 e-file season opens (expected)
DESCRIPTION:All individual filers\, including Schedule C businesses\n\nTh
 e IRS starts accepting 2026 Form 1040 returns. The date is not announced 
 yet\; the 2026 season opened on Monday\, January 26\, 2026\, and the IRS 
 usually confirms the date in early January.\n\nGuide: https://mainstreetr
 adar.com/deadlines/\nSource: https://www.irs.gov/newsroom/irs-opens-2026-
 filing-season
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: 2027 e-file season opens (expected)
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:1099-misc-k-recipients-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:1099-MISC and 1099-K to recipients
DESCRIPTION:Payers of rents\, other income and similar payments\; payment
  settlement entities\n\nFurnish Form 1099-MISC (most boxes) and Form 1099
 -K to recipients. Most 1099-MISC boxes now use a $2\,000 threshold\; thir
 d-party networks report on 1099-K only above $20\,000 and 200 transaction
 s.\n\nGuide: https://mainstreetradar.com/deadlines/\nSource: https://www.
 irs.gov/publications/p1099
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: 1099-MISC and 1099-K to recipients
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:1099-nec-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:1099-NEC to contractors and IRS
DESCRIPTION:Businesses that paid a non-employee $2\,000 or more for servi
 ces in 2026\n\nSend Form 1099-NEC to each contractor and file it with the
  IRS\, on paper or through IRIS\, on the same day. The threshold rose fro
 m $600 to $2\,000 for payments made after 2025.\n\nGuide: https://mainstr
 eetradar.com/deadlines/\nSource: https://www.irs.gov/instructions/i1099me
 c
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: 1099-NEC to contractors and IRS
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:form-940-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:Form 940 (FUTA) for 2026
DESCRIPTION:Employers that paid $1\,500+ in wages in any quarter or had a
 n employee in 20+ weeks\n\nFile the annual federal unemployment tax retur
 n\, Form 940\, and pay any FUTA tax still due. If all FUTA tax was deposi
 ted on time\, you have until February 10.\n\nGuide: https://mainstreetrad
 ar.com/deadlines/\nSource: https://www.irs.gov/publications/p509
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Form 940 (FUTA) for 2026
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:form-941-q4-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:Form 941 for Q4 2026
DESCRIPTION:Employers that withhold federal income\, Social Security and 
 Medicare tax from wages\n\nFile Form 941 for October to December 2026 (an
 nual filers use Form 944\, and Form 945 covers non-payroll withholding). 
 If all tax was deposited on time\, the deadline is February 10.\n\nGuide:
  https://mainstreetradar.com/deadlines/\nSource: https://www.irs.gov/publ
 ications/p509
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Form 941 for Q4 2026
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:w2-w3-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270201
DTEND;VALUE=DATE:20270202
SUMMARY:W-2 to employees and SSA
DESCRIPTION:Employers who paid wages in 2026\n\nGive employees Copies B\,
  C and 2 of Form W-2 and file Copy A with Form W-3 at the Social Security
  Administration. January 31\, 2027 is a Sunday\, so the deadline is Monda
 y.\n\nGuide: https://mainstreetradar.com/deadlines/\nSource: https://www.
 irs.gov/instructions/iw2w3
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: W-2 to employees and SSA
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:1099-misc-box8-10-recipients-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270216
DTEND;VALUE=DATE:20270217
SUMMARY:1099-MISC (boxes 8 and 10) to recipients
DESCRIPTION:Payers of substitute payments (box 8) or gross proceeds to at
 torneys (box 10)\n\nFurnish these 1099-MISC statements. The rule is Febru
 ary 15\, but February 15\, 2027 is Presidents' Day\, so the deadline move
 s to Tuesday.\n\nGuide: https://mainstreetradar.com/deadlines/\nSource: h
 ttps://www.irs.gov/publications/p1099
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: 1099-MISC (boxes 8 and 10) to recipients
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:1099-paper-irs-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270301
DTEND;VALUE=DATE:20270302
SUMMARY:Paper 1099-MISC and 1099-K to the IRS
DESCRIPTION:Payers filing fewer than 10 information returns in total\n\nM
 ail paper Forms 1099-MISC and 1099-K with transmittal Form 1096. February
  28\, 2027 is a Sunday\, so the deadline is Monday. With 10 or more retur
 ns of all types\, you must e-file.\n\nGuide: https://mainstreetradar.com/
 deadlines/\nSource: https://www.irs.gov/publications/p1099
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Paper 1099-MISC and 1099-K to the IRS
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:partnership-scorp-returns-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270315
DTEND;VALUE=DATE:20270316
SUMMARY:Partnership and S-corp returns
DESCRIPTION:Partnerships\, multi-member LLCs and S corporations with a ca
 lendar tax year\n\nFile Form 1065 or Form 1120-S for 2026 and give each p
 artner or shareholder a Schedule K-1. Form 7004 gives an automatic six-mo
 nth extension\, to September 15.\n\nGuide: https://mainstreetradar.com/de
 adlines/\nSource: https://www.irs.gov/instructions/i1120s
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Partnership and S-corp returns
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:1099-efile-irs-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270331
DTEND;VALUE=DATE:20270401
SUMMARY:E-filed 1099-MISC and 1099-K to the IRS
DESCRIPTION:Payers filing information returns electronically\n\nElectroni
 c filing deadline for Forms 1099-MISC and 1099-K. For filing season 2027\
 , IRIS is the only IRS intake system\, because FIRE has been retired.\n\n
 Guide: https://mainstreetradar.com/deadlines/\nSource: https://www.irs.go
 v/publications/p1099
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: E-filed 1099-MISC and 1099-K to the IRS
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:c-corp-return-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270415
DTEND;VALUE=DATE:20270416
SUMMARY:C-corp Form 1120 for 2026
DESCRIPTION:C corporations with a calendar tax year\n\nFile Form 1120 and
  pay the tax due. Form 7004 gives an automatic six-month extension to fil
 e\, to October 15.\n\nGuide: https://mainstreetradar.com/deadlines/\nSour
 ce: https://www.irs.gov/instructions/i1120
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: C-corp Form 1120 for 2026
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:corp-estimated-q1-2027@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270415
DTEND;VALUE=DATE:20270416
SUMMARY:Corporate estimated tax\, 1st installment 2027
DESCRIPTION:C corporations (calendar tax year) that expect to owe $500 or
  more\n\nPay the first 2027 estimated tax installment (Form 1120-W) throu
 gh EFTPS.\n\nGuide: https://mainstreetradar.com/deadlines/\nSource: https
 ://www.irs.gov/instructions/i1120
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Corporate estimated tax\, 1st installment 2027
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:estimated-tax-q1-2027@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270415
DTEND;VALUE=DATE:20270416
SUMMARY:Estimated tax\, 1st payment for 2027
DESCRIPTION:Sole proprietors\, freelancers\, partners\, LLC members and S
 -corp shareholders who expect to owe $1\,000 or more\n\nPay the first 202
 7 installment with Form 1040-ES.\n\nGuide: https://mainstreetradar.com/de
 adlines/\nSource: https://www.irs.gov/businesses/small-businesses-self-em
 ployed/estimated-taxes
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Estimated tax\, 1st payment for 2027
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:fbar-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270415
DTEND;VALUE=DATE:20270416
SUMMARY:FBAR for 2026
DESCRIPTION:US persons and entities with foreign accounts totalling more 
 than $10\,000 at any time in 2026\n\nFile FinCEN Form 114 electronically 
 through the BSA E-Filing System\, not with your tax return. The extension
  to October 15 is automatic.\n\nGuide: https://mainstreetradar.com/deadli
 nes/\nSource: https://www.irs.gov/businesses/small-businesses-self-employ
 ed/report-of-foreign-bank-and-financial-accounts-fbar
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: FBAR for 2026
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:individual-return-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270415
DTEND;VALUE=DATE:20270416
SUMMARY:Form 1040 with Schedule C for 2026
DESCRIPTION:Sole proprietors\, single-member LLCs and all individual file
 rs\n\nFile Form 1040 with Schedule C and Schedule SE and pay any balance 
 due. Form 4868 extends filing\, but not payment\, to October 15.\n\nGuide
 : https://mainstreetradar.com/deadlines/\nSource: https://www.irs.gov/fil
 ing/get-an-extension-to-file-your-tax-return
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Form 1040 with Schedule C for 2026
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:form-941-q1-2027@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270430
DTEND;VALUE=DATE:20270501
SUMMARY:Form 941 for Q1 2027
DESCRIPTION:Employers that withhold federal income\, Social Security and 
 Medicare tax from wages\n\nFile Form 941 for January to March 2027. If al
 l tax was deposited on time\, you have until May 10.\n\nGuide: https://ma
 instreetradar.com/deadlines/\nSource: https://www.irs.gov/publications/p5
 09
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Form 941 for Q1 2027
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:corp-estimated-q2-2027@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270615
DTEND;VALUE=DATE:20270616
SUMMARY:Corporate estimated tax\, 2nd installment 2027
DESCRIPTION:C corporations (calendar tax year) that expect to owe $500 or
  more\n\nPay the second 2027 estimated tax installment (Form 1120-W).\n\n
 Guide: https://mainstreetradar.com/deadlines/\nSource: https://www.irs.go
 v/instructions/i1120
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Corporate estimated tax\, 2nd installment 2027
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:estimated-tax-q2-2027@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270615
DTEND;VALUE=DATE:20270616
SUMMARY:Estimated tax\, 2nd payment for 2027
DESCRIPTION:Sole proprietors\, freelancers\, partners\, LLC members and S
 -corp shareholders who expect to owe $1\,000 or more\n\nPay the second 20
 27 installment with Form 1040-ES.\n\nGuide: https://mainstreetradar.com/d
 eadlines/\nSource: https://www.irs.gov/businesses/small-businesses-self-e
 mployed/estimated-taxes
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Estimated tax\, 2nd payment for 2027
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:form-941-q2-2027@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270802
DTEND;VALUE=DATE:20270803
SUMMARY:Form 941 for Q2 2027
DESCRIPTION:Employers that withhold federal income\, Social Security and 
 Medicare tax from wages\n\nFile Form 941 for April to June 2027. July 31 
 is a Saturday\, so the deadline is Monday\; if all tax was deposited on t
 ime\, you have until August 10.\n\nGuide: https://mainstreetradar.com/dea
 dlines/\nSource: https://www.irs.gov/publications/p509
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Form 941 for Q2 2027
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:corp-estimated-q3-2027@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270915
DTEND;VALUE=DATE:20270916
SUMMARY:Corporate estimated tax\, 3rd installment 2027
DESCRIPTION:C corporations (calendar tax year) that expect to owe $500 or
  more\n\nPay the third 2027 estimated tax installment (Form 1120-W).\n\nG
 uide: https://mainstreetradar.com/deadlines/\nSource: https://www.irs.gov
 /instructions/i1120
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Corporate estimated tax\, 3rd installment 2027
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:estimated-tax-q3-2027@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270915
DTEND;VALUE=DATE:20270916
SUMMARY:Estimated tax\, 3rd payment for 2027
DESCRIPTION:Sole proprietors\, freelancers\, partners\, LLC members and S
 -corp shareholders who expect to owe $1\,000 or more\n\nPay the third 202
 7 installment with Form 1040-ES.\n\nGuide: https://mainstreetradar.com/de
 adlines/\nSource: https://www.irs.gov/businesses/small-businesses-self-em
 ployed/estimated-taxes
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Estimated tax\, 3rd payment for 2027
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:extended-1065-1120s-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20270915
DTEND;VALUE=DATE:20270916
SUMMARY:Extended partnership and S-corp returns
DESCRIPTION:Partnerships and S corporations that filed Form 7004\n\nLast 
 day to file the extended 2026 Form 1065 or 1120-S and the K-1s.\n\nGuide:
  https://mainstreetradar.com/deadlines/\nSource: https://www.irs.gov/inst
 ructions/i7004
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Extended partnership and S-corp returns
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:extended-1040-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20271015
DTEND;VALUE=DATE:20271016
SUMMARY:Extended Form 1040 for 2026
DESCRIPTION:Individuals and sole proprietors who filed Form 4868\n\nLast 
 day to file the extended 2026 Form 1040 with Schedule C. Interest and pen
 alties on unpaid tax have been running since April 15.\n\nGuide: https://
 mainstreetradar.com/deadlines/\nSource: https://www.irs.gov/filing/get-an
 -extension-to-file-your-tax-return
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Extended Form 1040 for 2026
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:extended-1120-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20271015
DTEND;VALUE=DATE:20271016
SUMMARY:Extended C-corp Form 1120
DESCRIPTION:Calendar-year C corporations that filed Form 7004\n\nLast day
  to file the extended 2026 Form 1120.\n\nGuide: https://mainstreetradar.c
 om/deadlines/\nSource: https://www.irs.gov/instructions/i7004
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Extended C-corp Form 1120
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:fbar-extended-2026@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20271015
DTEND;VALUE=DATE:20271016
SUMMARY:FBAR automatic extension ends
DESCRIPTION:FBAR filers who missed April 15\n\nLast day to file FinCEN Fo
 rm 114 for 2026 under the automatic extension.\n\nGuide: https://mainstre
 etradar.com/deadlines/\nSource: https://www.irs.gov/businesses/small-busi
 nesses-self-employed/report-of-foreign-bank-and-financial-accounts-fbar
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: FBAR automatic extension ends
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:form-941-q3-2027@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20271101
DTEND;VALUE=DATE:20271102
SUMMARY:Form 941 for Q3 2027
DESCRIPTION:Employers that withhold federal income\, Social Security and 
 Medicare tax from wages\n\nFile Form 941 for July to September 2027. Octo
 ber 31 is a Sunday\, so the deadline is Monday\; if all tax was deposited
  on time\, you have until November 10.\n\nGuide: https://mainstreetradar.
 com/deadlines/\nSource: https://www.irs.gov/publications/p509
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Form 941 for Q3 2027
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:corp-estimated-q4-2027@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20271215
DTEND;VALUE=DATE:20271216
SUMMARY:Corporate estimated tax\, 4th installment 2027
DESCRIPTION:C corporations (calendar tax year) that expect to owe $500 or
  more\n\nPay the fourth 2027 estimated tax installment (Form 1120-W).\n\n
 Guide: https://mainstreetradar.com/deadlines/\nSource: https://www.irs.go
 v/instructions/i1120
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Corporate estimated tax\, 4th installment 2027
END:VALARM
END:VEVENT
BEGIN:VEVENT
UID:estimated-tax-q4-2027@mainstreetradar.com
DTSTAMP:20261026T112651Z
DTSTART;VALUE=DATE:20280118
DTEND;VALUE=DATE:20280119
SUMMARY:Estimated tax\, 4th payment for 2027
DESCRIPTION:Sole proprietors\, freelancers\, partners\, LLC members and S
 -corp shareholders who expect to owe $1\,000 or more\n\nPay the last 2027
  installment with Form 1040-ES. January 15\, 2028 is a Saturday and Janua
 ry 17 is Martin Luther King Jr. Day\, so the deadline should be Tuesday\,
  January 18. The 2027 Form 1040-ES is not published yet.\n\nGuide: https:
 //mainstreetradar.com/deadlines/\nSource: https://www.irs.gov/businesses/
 small-businesses-self-employed/estimated-taxes
URL:https://mainstreetradar.com/deadlines/
BEGIN:VALARM
ACTION:DISPLAY
TRIGGER:-P7D
DESCRIPTION:In a week: Estimated tax\, 4th payment for 2027
END:VALARM
END:VEVENT
END:VCALENDAR