Kansas business filing dates, 2027
State-level due dates for businesses filing in Kansas. Every line links to the official page it came from, with the date that page was read. Where no official source has been verified, the line says so instead of showing a date.
Add to Google CalendarAdd to Apple or OutlookDownload .ics37 dated lines in the calendar file · sources last read 2026-09-23
Coverage · 2 of 6 fully dated
Income / franchise tax return
no fixed date · 2 not dated yetThe annual return for the business’s tax year, and in franchise-tax states the report that keeps the entity in good standing. Which form and which date depend on the entity type and the tax year. Where the source grants an extension, it extends the time to file; the source says whether it also extends the time to pay.
Why no dates: Every date shown here is checked against its official source.
| Obligation | Applies to | Due rule | 2027 dates | Source · retrieved |
|---|---|---|---|---|
No Kansas franchise taxSource text“The Kansas Franchise Tax has expired for all tax years commencing after December 31, 2010 (K.S.A 79-5401).”verbatim · ksrevenue.gov · retrieved 2026-09-23 | Applies toThe Kansas franchise tax expired for tax years beginning after December 31, 2010. | Due ruleNo date: see the source text | 2027 dates— | Source · retrievedksrevenue.gov/forms-franchise.html (official source, opens in a new tab)retrieved |
| Form K-120 corporation income tax returncalendar-year C corporation | Applies toTax years beginning in 2025 (2025 booklet): a C corporation doing business in or deriving income from Kansas, and not exempt for Kansas income tax (exempt organizations, insurers, banks, trust companies, savings and loans), as the preparer attests, pays by the 15th day of the 4th month after its year ends and files one month after its federal due date (the 15th day of the 4th month), so the 15th day of the 5th month. A federal Form 7004 extension (copy enclosed) gives six more months to file; it is not an extension to pay. June 30 year-ends are not covered. | Due ruleUnsupported | 2027 datesAuthority for 2026 not yet published; no date is shown until it is. | Source · retrievedNo verified source on file |
| Form K-120S partnership / S corporation returncalendar-year S corporation or partnership | Applies toTax years beginning in 2025 (2025 booklet): a partnership with Kansas-source income or loss, or an S corporation doing business in or deriving income from Kansas that is not a bank or savings and loan (those file the K-130), as the preparer attests, files one month after its federal due date (the 15th day of the 3rd month): April 15, 2026 for calendar 2025, the 15th day of the 4th month for fiscal years. A federal Form 7004 extension extends filing six months; the booklet does not say it extends payment. | Due ruleUnsupported | 2027 datesAuthority for 2026 not yet published; no date is shown until it is. | Source · retrievedNo verified source on file |
Estimated tax
1 date · 2 not dated yetInstallments paid during the year toward the year’s tax. Whether a business must pay them depends on its expected liability, which this page cannot know; the lines show when installments fall due for those who must.
Why no dates: Every date shown here is checked against its official source.
| Obligation | Applies to | Due rule | 2027 dates | Source · retrieved |
|---|---|---|---|---|
Individual estimated tax (K-40ES) for 2026Schedule C filerSource text“Calendar Year Taxpayers (except farmers and fishers) – Payments are due on or before the due dates on each voucher (April 15, 2026, June 15, 2026, September 15, 2026 and January 15, 2027 unless your return for the 2026 tax year is filed and the tax fully paid by January 31, 2027.”verbatim · ksrevenue.gov · retrieved 2026-09-23 | Applies toA calendar-year individual (including a sole proprietor) required to pay 2026 Kansas estimates pays by April 15, June 15 and September 15, 2026 and January 15, 2027, unless the 2026 return is filed and paid by January 31, 2027. | Due rule1st voucher: April 15 of the year the calendar year begins; 2nd voucher: June 15 of the year the calendar year begins; 3rd voucher: September 15 of the year the calendar year begins; 4th voucher: January 15 of the year after the calendar year beginsA date on a weekend moves to the next business day; state holidays are not compiled. | 2027 dates
State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day. | Source · retrievedksrevenue.gov/pdf/k-40es26.pdf (official source, opens in a new tab)retrieved |
| Corporate estimated tax (K-120ES)calendar-year S corporation or C corporation | Applies toFor tax years beginning in 2026 (the 2026 K-120ES): a corporation whose Kansas tax can reasonably be expected to exceed $500 pays estimates by the 15th day of the 4th, 6th, 9th and 12th months of its taxable year (not needed in its first year in Kansas). | Due ruleUnsupported | 2027 datesAuthority for 2027 not yet published; no date is shown until it is. | Source · retrievedNo verified source on file |
| Individual estimated tax (K-40ES) for 2026Schedule C filer | Applies toA calendar-year individual (including a sole proprietor) required to pay 2026 Kansas estimates pays by April 15, June 15 and September 15, 2026 and January 15, 2027, unless the 2026 return is filed and paid by January 31, 2027. | Due ruleUnsupported | 2027 datesAuthority for 2027 not yet published; no date is shown until it is. | Source · retrievedNo verified source on file |
Withholding
18 datesReturns and deposits of income tax withheld from employees’ wages. The agency assigns each employer a deposit frequency, usually from its past liability, so the dates differ by frequency.
| Obligation | Applies to | Due rule | 2027 dates | Source · retrieved |
|---|---|---|---|---|
Withholding deposit report (KW-5)monthly withholding filerSource text“$1200.01 - $8,000 | Monthly | Each month | 15th day of the month following the reporting period”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$0 - $200 | Annual | Jan - Dec | January 25 of the following year”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$200.01 - $1200 | Quarterly | Three months | 25th of the month following the close of the quarter”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$8,000.01 - $100,000 | Semi-Monthly | 1st to the 15th | 25 of the same month”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$8,000.01 - $100,000 | Semi-Monthly | 16th to the last day of each month | 10th of the next month”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$100,000.01 and above | Quad-Monthly | Within three banking days of the 7th, 15th, 21st and the last day of the month | Electronic funds transfer payment required”verbatim · ksrevenue.gov · retrieved 2026-09-23 | Applies toBy annual withholding: up to $200 annual, by January 25; $200.01 to $1,200 quarterly, by the 25th after the quarter; $1,200.01 to $8,000 monthly, by the 15th of the next month. Semi-monthly and quad-monthly filers are not dated here. | Due ruleMonthly withholding return: 15th day of the month after the month endsA date on a weekend moves to the next business day; state holidays are not compiled. | 2027 dates
State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day. | Source · retrievedksrevenue.gov/faqs-withholding.html (official source, opens in a new tab)retrieved |
Withholding deposit report (KW-5)annual withholding filerSource text“$1200.01 - $8,000 | Monthly | Each month | 15th day of the month following the reporting period”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$0 - $200 | Annual | Jan - Dec | January 25 of the following year”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$200.01 - $1200 | Quarterly | Three months | 25th of the month following the close of the quarter”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$8,000.01 - $100,000 | Semi-Monthly | 1st to the 15th | 25 of the same month”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$8,000.01 - $100,000 | Semi-Monthly | 16th to the last day of each month | 10th of the next month”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$100,000.01 and above | Quad-Monthly | Within three banking days of the 7th, 15th, 21st and the last day of the month | Electronic funds transfer payment required”verbatim · ksrevenue.gov · retrieved 2026-09-23 | Applies toBy annual withholding: up to $200 annual, by January 25; $200.01 to $1,200 quarterly, by the 25th after the quarter; $1,200.01 to $8,000 monthly, by the 15th of the next month. Semi-monthly and quad-monthly filers are not dated here. | Due ruleAnnual withholding return: January 25 of the year after the calendar year endsA date on a weekend moves to the next business day; state holidays are not compiled. | 2027 dates
State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day. | Source · retrievedksrevenue.gov/faqs-withholding.html (official source, opens in a new tab)retrieved |
Withholding deposit report (KW-5)quarterly withholding filerSource text“$1200.01 - $8,000 | Monthly | Each month | 15th day of the month following the reporting period”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$0 - $200 | Annual | Jan - Dec | January 25 of the following year”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$200.01 - $1200 | Quarterly | Three months | 25th of the month following the close of the quarter”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$8,000.01 - $100,000 | Semi-Monthly | 1st to the 15th | 25 of the same month”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$8,000.01 - $100,000 | Semi-Monthly | 16th to the last day of each month | 10th of the next month”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$100,000.01 and above | Quad-Monthly | Within three banking days of the 7th, 15th, 21st and the last day of the month | Electronic funds transfer payment required”verbatim · ksrevenue.gov · retrieved 2026-09-23 | Applies toBy annual withholding: up to $200 annual, by January 25; $200.01 to $1,200 quarterly, by the 25th after the quarter; $1,200.01 to $8,000 monthly, by the 15th of the next month. Semi-monthly and quad-monthly filers are not dated here. | Due ruleQuarterly withholding return: 25th day of the month after the quarter endsA date on a weekend moves to the next business day; state holidays are not compiled. | 2027 dates
State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day. | Source · retrievedksrevenue.gov/faqs-withholding.html (official source, opens in a new tab)retrieved |
Annual withholding return (KW-3) and W-2sSource text“The annual return, W-2s and 1099s are due by January 31 of the following year.”verbatim · ksrevenue.gov · retrieved 2026-09-23 | Applies toAn employer the preparer attests withholds Kansas income tax files the KW-3 annual return, with the W-2s and 1099s showing Kansas withholding, by January 31 of the following year. A payer with Kansas withholding only on 1099s and no employees is not covered here. | Due ruleKW-3: January 31 of the year after the calendar year endsA date on a weekend moves to the next business day; state holidays are not compiled. | 2027 dates
State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day. | Source · retrievedksrevenue.gov/kw100.html (official source, opens in a new tab)retrieved |
Unemployment insurance
UnsupportedEmployer contribution and wage reports for unemployment insurance: the state program, and FUTA at the federal level.
Why no dates: No official source confirmed yet for Kansas's unemployment insurance report due dates.
| Obligation | Applies to | Due rule | 2027 dates | Source · retrieved |
|---|---|---|---|---|
| Unemployment insurance | Applies toShown once verified | Due ruleUnsupported | 2027 datesNo official source confirmed yet for Kansas's unemployment insurance report due dates. | Source · retrievedNo verified source on file |
Sales and use tax
17 datesReturns for sales and use tax collected under a permit. The agency assigns each permit holder a filing frequency; the dates differ by frequency.
| Obligation | Applies to | Due rule | 2027 dates | Source · retrieved |
|---|---|---|---|---|
Sales and use tax returnannual filerSource text“(C) a return for each month on or before the 25 th day of the following month when the total tax liability exceeds $5,000 in any calendar year.”verbatim · kslegislature.gov · retrieved 2026-09-23 “$0—$1000.00 | Annual | On or before January 25th of the following year.”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$1000.01—$5,000.00 | Quarterly | On or before the 25th of the month following the end of the calendar quarter— April 25, July 25, October 25, January 25.”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$5,000.01 and over | Monthly (Seasonal) | On or before the 25th of the following month (e.g., a March return is due by April 25).”verbatim · ksrevenue.gov · retrieved 2026-09-23 “If your business is seasonal, you will file monthly during the period of business operation.”verbatim · ksrevenue.gov · retrieved 2026-09-23 | Applies toKansas law sets the filing frequency by the year's tax: an annual return by January 25 of the following year (up to $1,000); quarterly returns by the 25th of the month after each calendar quarter (up to $5,000); and a return for each month by the 25th of the following month (over $5,000). The preparer declares the frequency the Department assigned. A seasonal business files monthly only during its months of operation, which the calendar does not date: the line applies once the preparer attests the business is not seasonal. | Due ruleAnnual sales tax return: January 25 of the year after the calendar year endsA date on a weekend moves to the next business day; state holidays are not compiled. | 2027 dates
State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day. | Source · retrievedkslegislature.gov/li/b2025_26/statute/079_000_0000_chapter/079_036_0000_article/079_036_0007_section/079_036_0007_k/ (official source, opens in a new tab)retrieved ksrevenue.gov/pub1510.html (official source, opens in a new tab)retrieved |
Sales and use tax returnquarterly filerSource text“(C) a return for each month on or before the 25 th day of the following month when the total tax liability exceeds $5,000 in any calendar year.”verbatim · kslegislature.gov · retrieved 2026-09-23 “$0—$1000.00 | Annual | On or before January 25th of the following year.”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$1000.01—$5,000.00 | Quarterly | On or before the 25th of the month following the end of the calendar quarter— April 25, July 25, October 25, January 25.”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$5,000.01 and over | Monthly (Seasonal) | On or before the 25th of the following month (e.g., a March return is due by April 25).”verbatim · ksrevenue.gov · retrieved 2026-09-23 “If your business is seasonal, you will file monthly during the period of business operation.”verbatim · ksrevenue.gov · retrieved 2026-09-23 | Applies toKansas law sets the filing frequency by the year's tax: an annual return by January 25 of the following year (up to $1,000); quarterly returns by the 25th of the month after each calendar quarter (up to $5,000); and a return for each month by the 25th of the following month (over $5,000). The preparer declares the frequency the Department assigned. A seasonal business files monthly only during its months of operation, which the calendar does not date: the line applies once the preparer attests the business is not seasonal. | Due ruleQuarterly sales tax return: 25th day of the month after the quarter endsA date on a weekend moves to the next business day; state holidays are not compiled. | 2027 dates
State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day. | Source · retrievedkslegislature.gov/li/b2025_26/statute/079_000_0000_chapter/079_036_0000_article/079_036_0007_section/079_036_0007_k/ (official source, opens in a new tab)retrieved ksrevenue.gov/pub1510.html (official source, opens in a new tab)retrieved |
Sales and use tax returnmonthly filerSource text“(C) a return for each month on or before the 25 th day of the following month when the total tax liability exceeds $5,000 in any calendar year.”verbatim · kslegislature.gov · retrieved 2026-09-23 “$0—$1000.00 | Annual | On or before January 25th of the following year.”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$1000.01—$5,000.00 | Quarterly | On or before the 25th of the month following the end of the calendar quarter— April 25, July 25, October 25, January 25.”verbatim · ksrevenue.gov · retrieved 2026-09-23 “$5,000.01 and over | Monthly (Seasonal) | On or before the 25th of the following month (e.g., a March return is due by April 25).”verbatim · ksrevenue.gov · retrieved 2026-09-23 “If your business is seasonal, you will file monthly during the period of business operation.”verbatim · ksrevenue.gov · retrieved 2026-09-23 | Applies toKansas law sets the filing frequency by the year's tax: an annual return by January 25 of the following year (up to $1,000); quarterly returns by the 25th of the month after each calendar quarter (up to $5,000); and a return for each month by the 25th of the following month (over $5,000). The preparer declares the frequency the Department assigned. A seasonal business files monthly only during its months of operation, which the calendar does not date: the line applies once the preparer attests the business is not seasonal. | Due ruleMonthly sales tax return: 25th day of the month after the month endsA date on a weekend moves to the next business day; state holidays are not compiled. | 2027 dates
State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day. | Source · retrievedkslegislature.gov/li/b2025_26/statute/079_000_0000_chapter/079_036_0000_article/079_036_0007_section/079_036_0007_k/ (official source, opens in a new tab)retrieved ksrevenue.gov/pub1510.html (official source, opens in a new tab)retrieved |
Annual report
1 date · 1 not dated yetThe annual or biennial report an entity files with the Secretary of State (or its equivalent) to stay in good standing. Some are keyed to the month the entity was formed.
Why no dates: Drafted from Kansas's official source; dates show once the rule has been independently checked against that source.
| Obligation | Applies to | Due rule | 2027 dates | Source · retrieved |
|---|---|---|---|---|
Information report (Secretary of State)any business except a sole proprietor or general partnership, formed in an odd-numbered yearSource text“Information reports are filed biennially. Businesses forming in even years file reports in each succeeding even year. Businesses forming in odd years file reports in each succeeding odd year. All for profit businesses are due by April 15th of their respective odd or even year, and all not for profit businesses are due by June 15th of their respective odd or even year.”verbatim · sos.ks.gov · retrieved 2026-09-23 | Applies toA for-profit business formed in Kansas (a corporation the preparer attests is not a nonprofit, an LLC, LP or LLP) files its information report every two years, in years of the same parity as its formation year, by April 15. Not-for-profit corporations formed in Kansas (June 15) have their own line. Businesses registered from another state are not covered here: their cycle follows the year they registered in Kansas, which the profile does not hold. The source states no weekend rule, so the stated date is shown. | Due ruleInformation report: April 15 of the year the 2-year filing period (from the formation month) begins | 2027 dates
| Source · retrievedsos.ks.gov/businesses/information-reports.html (official source, opens in a new tab)retrieved |
| Information report, not-for-profit corporation (Secretary of State) | Applies toShown once verified | Due ruleUnsupported | 2027 datesNot yet verified against its official source; no date is shown until it is. | Source · retrievedNo verified source on file |
Due-date rules
no fixed dateThe conventions other lines cite: how a date on a weekend or holiday moves, and how a disaster declaration postpones deadlines.
| Obligation | Applies to | Due rule | 2027 dates | Source · retrieved |
|---|---|---|---|---|
Weekend and holiday due datesSource text“If any due date falls on a Saturday, Sunday or legal holiday, substitute the next regular workday.”verbatim · ksrevenue.gov · retrieved 2026-09-23 | Applies toA Kansas tax due date on a Saturday, Sunday or legal holiday moves to the next regular workday. | Due ruleNo date: see the source text | 2027 dates— | Source · retrievedksrevenue.gov/pub1515.html (official source, opens in a new tab)retrieved |
Dates are computed from the linked pages as they read on each retrieval date. Agencies change their pages, and the IRS postpones deadlines after disasters; confirm with the source before filing.
Tracking these for a list of clients? FilingDates builds each client’s calendar from the same rules, with every date linked to its source.