Indiana business filing dates, 2027

State-level due dates for businesses filing in Indiana. 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 Calendar Add to Apple or Outlook Download .ics28 dated lines in the calendar file · sources last read 2026-09-23

Income / franchise tax return

3 dates

The 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.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Form IT-20S S corporation returncalendar-year S corporation Source text “Due 15th day of fourth month following the end of the taxable year \| Form IT-20S”verbatim · in.gov · retrieved 2026-09-23 “Extended due date is 15th day of tenth month after the end of the taxpayer’s tax year \| Form IT-20S (Indiana S Corp) and Form IT-65 (Indiana Partnership)”verbatim · in.gov · retrieved 2026-09-23 “There is no need to file an Indiana extension if a federal extension is filed. A copy of the federal extension must be included with the Indiana return when it is filed. If a federal extension is not being filed, an Indiana extension request can be filed directly with DOR.”verbatim · in.gov · retrieved 2026-09-23	Applies toAn S corporation's IT-20S is due the 15th day of the 4th month after its taxable year ends; the extended due date is the 15th day of the 10th month. A federal extension counts (attach a copy); without one, an Indiana extension request can be filed directly with DOR.	Due ruleIT-20S: 15th day of the 4th month after the tax year endsA date on a weekend moves to the next business day; state holidays are not compiled.	2027 dates Apr 15ThuIT-20Sextended: Oct 15 State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.	Source · retrievedin.gov/dor/files/tax-chapter.pdf (official source, opens in a new tab)retrieved 2026-09-23in.gov/dor/tax-forms/other-forms/ptet/faq/ (official source, opens in a new tab)retrieved 2026-09-23
Form IT-65 partnership returncalendar-year partnership Source text “Due 15th day of fourth month following the end of the taxable year \| Form IT-65”verbatim · in.gov · retrieved 2026-09-23 “Extended due date is 15th day of tenth month after the end of the taxpayer’s tax year \| Form IT-20S (Indiana S Corp) and Form IT-65 (Indiana Partnership)”verbatim · in.gov · retrieved 2026-09-23 “There is no need to file an Indiana extension if a federal extension is filed. A copy of the federal extension must be included with the Indiana return when it is filed. If a federal extension is not being filed, an Indiana extension request can be filed directly with DOR.”verbatim · in.gov · retrieved 2026-09-23	Applies toA partnership's IT-65 is due the 15th day of the 4th month after its taxable year ends; the extended due date is the 15th day of the 10th month. A federal extension counts (attach a copy); without one, an Indiana extension request can be filed directly with DOR.	Due ruleIT-65: 15th day of the 4th month after the tax year endsA date on a weekend moves to the next business day; state holidays are not compiled.	2027 dates Apr 15ThuIT-65extended: Oct 15 State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.	Source · retrievedin.gov/dor/files/tax-chapter.pdf (official source, opens in a new tab)retrieved 2026-09-23in.gov/dor/tax-forms/other-forms/ptet/faq/ (official source, opens in a new tab)retrieved 2026-09-23
Form IT-20 corporate income tax returncalendar-year C corporation Source text “The due date for the IT-20 return is the 15th day of the fifth month following the close of the taxable year. The department accepts the federal extension of time application (Form 7004). Taxpayers do not need to contact the department prior to filing the annual return if the taxpayer requests a federal extension.”verbatim · in.gov · retrieved 2026-09-23 “Extended due date is 15th day of eleventh month after the end of the taxpayer’s tax year \| Form IT-20”verbatim · in.gov · retrieved 2026-09-23 “In general, a C corporation doing business in Indiana is subject to the adjusted gross income tax. However, a corporation defined as a taxpayer under IC 6-5.5-1-17 is not subject to the adjusted gross income tax.”verbatim · in.gov · retrieved 2026-09-23 “If the due date on your return falls on a weekend or legal holiday, your payment and return are due on the next business day.”verbatim · in.gov · retrieved 2026-09-23	Applies toA C corporation the preparer attests does business in Indiana (not a financial institution the preparer attests is exempt, which pays the financial institutions tax instead): the IT-20 is due the 15th day of the 5th month after its taxable year closes. With a federal extension (Form 7004, copy attached) the extended due date is the 15th day of the 11th month. A return due on a weekend or legal holiday is due the next business day.	Due ruleIT-20: 15th day of the 5th month after the tax year endsA date on a weekend moves to the next business day; state holidays are not compiled.	2027 dates May 17MonIT-20 · moved from Sat May 15extended (Federal Form 7004): Nov 15 State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.	Source · retrievedin.gov/dor/files/reference/ib12.pdf (official source, opens in a new tab)retrieved 2026-09-23in.gov/dor/files/tax-chapter.pdf (official source, opens in a new tab)retrieved 2026-09-23in.gov/dor/files/intime-business-guide.pdf (official source, opens in a new tab)retrieved 2026-09-23

Form IT-20S S corporation returncalendar-year S corporation

Source text

“Due 15th day of fourth month following the end of the taxable year | Form IT-20S”verbatim · in.gov · retrieved 2026-09-23

“Extended due date is 15th day of tenth month after the end of the taxpayer’s tax year | Form IT-20S (Indiana S Corp) and Form IT-65 (Indiana Partnership)”verbatim · in.gov · retrieved 2026-09-23

“There is no need to file an Indiana extension if a federal extension is filed. A copy of the federal extension must be included with the Indiana return when it is filed. If a federal extension is not being filed, an Indiana extension request can be filed directly with DOR.”verbatim · in.gov · retrieved 2026-09-23

Applies toAn S corporation's IT-20S is due the 15th day of the 4th month after its taxable year ends; the extended due date is the 15th day of the 10th month. A federal extension counts (attach a copy); without one, an Indiana extension request can be filed directly with DOR.

Due ruleIT-20S: 15th day of the 4th month after the tax year endsA date on a weekend moves to the next business day; state holidays are not compiled.

2027 dates

Apr 15ThuIT-20Sextended: Oct 15

State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.

Source · retrievedin.gov/dor/files/tax-chapter.pdfretrieved 2026-09-23in.gov/dor/tax-forms/other-forms/ptet/faq/retrieved 2026-09-23

Form IT-65 partnership returncalendar-year partnership

Source text

“Due 15th day of fourth month following the end of the taxable year | Form IT-65”verbatim · in.gov · retrieved 2026-09-23

“Extended due date is 15th day of tenth month after the end of the taxpayer’s tax year | Form IT-20S (Indiana S Corp) and Form IT-65 (Indiana Partnership)”verbatim · in.gov · retrieved 2026-09-23

“There is no need to file an Indiana extension if a federal extension is filed. A copy of the federal extension must be included with the Indiana return when it is filed. If a federal extension is not being filed, an Indiana extension request can be filed directly with DOR.”verbatim · in.gov · retrieved 2026-09-23

Applies toA partnership's IT-65 is due the 15th day of the 4th month after its taxable year ends; the extended due date is the 15th day of the 10th month. A federal extension counts (attach a copy); without one, an Indiana extension request can be filed directly with DOR.

Due ruleIT-65: 15th day of the 4th month after the tax year endsA date on a weekend moves to the next business day; state holidays are not compiled.

2027 dates

Apr 15ThuIT-65extended: Oct 15

State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.

Source · retrievedin.gov/dor/files/tax-chapter.pdfretrieved 2026-09-23in.gov/dor/tax-forms/other-forms/ptet/faq/retrieved 2026-09-23

Form IT-20 corporate income tax returncalendar-year C corporation

Source text

“The due date for the IT-20 return is the 15th day of the fifth month following the close of the taxable year. The department accepts the federal extension of time application (Form 7004). Taxpayers do not need to contact the department prior to filing the annual return if the taxpayer requests a federal extension.”verbatim · in.gov · retrieved 2026-09-23

“Extended due date is 15th day of eleventh month after the end of the taxpayer’s tax year | Form IT-20”verbatim · in.gov · retrieved 2026-09-23

“In general, a C corporation doing business in Indiana is subject to the adjusted gross income tax. However, a corporation defined as a taxpayer under IC 6-5.5-1-17 is not subject to the adjusted gross income tax.”verbatim · in.gov · retrieved 2026-09-23

“If the due date on your return falls on a weekend or legal holiday, your payment and return are due on the next business day.”verbatim · in.gov · retrieved 2026-09-23

Applies toA C corporation the preparer attests does business in Indiana (not a financial institution the preparer attests is exempt, which pays the financial institutions tax instead): the IT-20 is due the 15th day of the 5th month after its taxable year closes. With a federal extension (Form 7004, copy attached) the extended due date is the 15th day of the 11th month. A return due on a weekend or legal holiday is due the next business day.

Due ruleIT-20: 15th day of the 5th month after the tax year endsA date on a weekend moves to the next business day; state holidays are not compiled.

2027 dates

May 17MonIT-20 · moved from Sat May 15extended (Federal Form 7004): Nov 15

State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.

Source · retrievedin.gov/dor/files/reference/ib12.pdfretrieved 2026-09-23in.gov/dor/files/tax-chapter.pdfretrieved 2026-09-23in.gov/dor/files/intime-business-guide.pdfretrieved 2026-09-23

Estimated tax

4 dates

Installments 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.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Individual estimated tax (IT-40ES)Schedule C filer Source text “Generally, if you owe $1,000 or more in state and county tax for the year that’s not covered by withholding taxes, you need to make estimated tax payments throughout the year. Estimated tax installment payments are due on or before: April 15 June 15 Sept. 15 Jan. 15 of the following year”verbatim · in.gov · retrieved 2026-09-23	Applies toAn individual (including a sole proprietor) owing $1,000 or more of state and county tax not covered by withholding pays by April 15, June 15, September 15 and January 15 of the following year.	Due rule1st installment: April 15 of the year the calendar year begins; 2nd installment: June 15 of the year the calendar year begins; 3rd installment: September 15 of the year the calendar year begins; 4th installment: 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 Jan 15Fri4th installment Apr 15Thu1st installment Jun 15Tue2nd installment Sep 15Wed3rd installment State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.	Source · retrievedin.gov/dor/i-need-to/make-a-payment/estimated-payments/ (official source, opens in a new tab)retrieved 2026-09-23
Corporate estimated tax Source text “A corporation whose estimated adjusted gross income tax liability exceeds $2,500 for a taxable year must file quarterly estimated tax payments.”verbatim · in.gov · retrieved 2026-09-23	Applies toA corporation whose Indiana adjusted gross income tax will exceed $2,500 for the year must make quarterly estimated payments. The installment dates are not stated on this source, so none are shown.	Due ruleNo date: see the source text	2027 dates—	Source · retrievedin.gov/dor/files/reference/ib12.pdf (official source, opens in a new tab)retrieved 2026-09-23

Individual estimated tax (IT-40ES)Schedule C filer

Source text

“Generally, if you owe $1,000 or more in state and county tax for the year that’s not covered by withholding taxes, you need to make estimated tax payments throughout the year. Estimated tax installment payments are due on or before: April 15 June 15 Sept. 15 Jan. 15 of the following year”verbatim · in.gov · retrieved 2026-09-23

Applies toAn individual (including a sole proprietor) owing $1,000 or more of state and county tax not covered by withholding pays by April 15, June 15, September 15 and January 15 of the following year.

Due rule1st installment: April 15 of the year the calendar year begins; 2nd installment: June 15 of the year the calendar year begins; 3rd installment: September 15 of the year the calendar year begins; 4th installment: 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

Jan 15Fri4th installment
Apr 15Thu1st installment
Jun 15Tue2nd installment
Sep 15Wed3rd installment

State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.

Source · retrievedin.gov/dor/i-need-to/make-a-payment/estimated-payments/retrieved 2026-09-23

Corporate estimated tax

Source text

“A corporation whose estimated adjusted gross income tax liability exceeds $2,500 for a taxable year must file quarterly estimated tax payments.”verbatim · in.gov · retrieved 2026-09-23

Applies toA corporation whose Indiana adjusted gross income tax will exceed $2,500 for the year must make quarterly estimated payments. The installment dates are not stated on this source, so none are shown.

Due ruleNo date: see the source text

2027 dates—

Source · retrievedin.gov/dor/files/reference/ib12.pdfretrieved 2026-09-23

Withholding

13 dates

Returns 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
Form WH-1 withholding return Source text “$1,000 or less \| Monthly \| 30 days after the end of the month”verbatim · in.gov · retrieved 2026-09-23 “$83.33 or less \| Annual \| 30 days after the end of the month”verbatim · in.gov · retrieved 2026-09-23 “More than $1,000 \| Early filer \| 20 days after the end of the month”verbatim · in.gov · retrieved 2026-09-23	Applies toFiling status follows average monthly withholding: $83.33 or less annual; $1,000 or less monthly, due 30 days after the month ends; more than $1,000 early filer, due 20 days after the month ends. Only monthly filers are dated here.	Due ruleWH-1: 30 days after the month endsA date on a weekend moves to the next business day; state holidays are not compiled.	2027 dates Feb 1MonWH-1 · moved from Sat Jan 30 Mar 2TueWH-1 Mar 30TueWH-1 Apr 30FriWH-1 May 31MonWH-1 · moved from Sun May 30 Jun 30WedWH-1 Jul 30FriWH-1 Aug 30MonWH-1 Sep 30ThuWH-1 Nov 1MonWH-1 · moved from Sat Oct 30 Nov 30TueWH-1 Dec 30ThuWH-1 State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.	Source · retrievedin.gov/dor/i-am-a/business-corp/business-faq/ (official source, opens in a new tab)retrieved 2026-09-23
Form WH-3 annual withholding reconciliation Source text “All employers must file the WH-3 by Jan. 31 each year.”verbatim · secure.in.gov · retrieved 2026-09-23	Applies toAll employers file the WH-3 annual reconciliation by January 31 each year.	Due ruleWH-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 Feb 1MonWH-3 · moved from Sun Jan 31 State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.	Source · retrievedsecure.in.gov/dor/i-am-a/business-corp/withholding/ (official source, opens in a new tab)retrieved 2026-09-23

Form WH-1 withholding return

Source text

“$1,000 or less | Monthly | 30 days after the end of the month”verbatim · in.gov · retrieved 2026-09-23

“$83.33 or less | Annual | 30 days after the end of the month”verbatim · in.gov · retrieved 2026-09-23

“More than $1,000 | Early filer | 20 days after the end of the month”verbatim · in.gov · retrieved 2026-09-23

Applies toFiling status follows average monthly withholding: $83.33 or less annual; $1,000 or less monthly, due 30 days after the month ends; more than $1,000 early filer, due 20 days after the month ends. Only monthly filers are dated here.

Due ruleWH-1: 30 days after the month endsA date on a weekend moves to the next business day; state holidays are not compiled.

2027 dates

Feb 1MonWH-1 · moved from Sat Jan 30
Mar 2TueWH-1
Mar 30TueWH-1
Apr 30FriWH-1
May 31MonWH-1 · moved from Sun May 30
Jun 30WedWH-1
Jul 30FriWH-1
Aug 30MonWH-1
Sep 30ThuWH-1
Nov 1MonWH-1 · moved from Sat Oct 30
Nov 30TueWH-1
Dec 30ThuWH-1

State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.

Source · retrievedin.gov/dor/i-am-a/business-corp/business-faq/retrieved 2026-09-23

Form WH-3 annual withholding reconciliation

Source text

“All employers must file the WH-3 by Jan. 31 each year.”verbatim · secure.in.gov · retrieved 2026-09-23

Applies toAll employers file the WH-3 annual reconciliation by January 31 each year.

Due ruleWH-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

Feb 1MonWH-3 · moved from Sun Jan 31

State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.

Source · retrievedsecure.in.gov/dor/i-am-a/business-corp/withholding/retrieved 2026-09-23

Unemployment insurance

4 dates

Employer contribution and wage reports for unemployment insurance: the state program, and FUTA at the federal level.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Quarterly wage report Source text “First \| January, February, March \| April 30”verbatim · in.gov · retrieved 2026-09-23 “Second \| April, May, June \| July 31”verbatim · in.gov · retrieved 2026-09-23 “Third \| July, August, September \| October 31”verbatim · in.gov · retrieved 2026-09-23 “Fourth \| October, November, December \| January 31”verbatim · in.gov · retrieved 2026-09-23 “All covered employers must file a quarterly report no later than the report due date as shown in the chart above.”verbatim · in.gov · retrieved 2026-09-23	Applies toAn employer the preparer lists as a quarterly Indiana unemployment-insurance filer (every covered employer files quarterly) files its wage report by April 30, July 31, October 31 and January 31. The source states no weekend rule, so the stated date is shown.	Due ruleQuarterly wage report: last day of the month after the quarter ends	2027 dates Jan 31Sun†Quarterly wage report Apr 30FriQuarterly wage report Jul 31Sat†Quarterly wage report Oct 31Sun†Quarterly wage report † Falls on a Sunday; the source states no weekend rule. Falls on a Saturday; the source states no weekend rule.	Source · retrievedin.gov/dwd/indiana-unemployment/employers/employer-guide/wage-reporting-need-to-know/quarterly-report-due-dates/ (official source, opens in a new tab)retrieved 2026-09-23

Quarterly wage report

Source text

“First | January, February, March | April 30”verbatim · in.gov · retrieved 2026-09-23

“Second | April, May, June | July 31”verbatim · in.gov · retrieved 2026-09-23

“Third | July, August, September | October 31”verbatim · in.gov · retrieved 2026-09-23

“Fourth | October, November, December | January 31”verbatim · in.gov · retrieved 2026-09-23

“All covered employers must file a quarterly report no later than the report due date as shown in the chart above.”verbatim · in.gov · retrieved 2026-09-23

Applies toAn employer the preparer lists as a quarterly Indiana unemployment-insurance filer (every covered employer files quarterly) files its wage report by April 30, July 31, October 31 and January 31. The source states no weekend rule, so the stated date is shown.

Due ruleQuarterly wage report: last day of the month after the quarter ends

2027 dates

Jan 31Sun†Quarterly wage report
Apr 30FriQuarterly wage report
Jul 31Sat†Quarterly wage report
Oct 31Sun†Quarterly wage report

† Falls on a Sunday; the source states no weekend rule. Falls on a Saturday; the source states no weekend rule.

Source · retrievedin.gov/dwd/indiana-unemployment/employers/employer-guide/wage-reporting-need-to-know/quarterly-report-due-dates/retrieved 2026-09-23

Sales and use tax

no fixed date

Returns 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
Consolidated sales tax information return (RP-11) Source text “RP-11 is due Jan. 31 and can only be filed online.”verbatim · in.gov · retrieved 2026-09-23 “This return is intended for consolidated sales tax filers.”verbatim · in.gov · retrieved 2026-09-23	Applies toA retailer the preparer attests is an Indiana consolidated sales tax filer files the RP-11 information return by January 31, online only. Shown as information; no date is generated.	Due ruleNo date: see the source text	2027 dates—	Source · retrievedin.gov/dor/i-am-a/business-corp/business-faq/ (official source, opens in a new tab)retrieved 2026-09-23
Sales tax early filer status Source text “*Early Filers for sales tax and companion taxes are defined as those having $1,000 or greater average monthly tax liability for the prior fiscal year ending on June 30 of the previous calendar year.”verbatim · in.gov · retrieved 2026-09-23	Applies toA retailer the preparer attests is an Indiana early filer ($1,000 or more average monthly sales tax liability for the prior fiscal year ending June 30). The Department's filing calendar lists early filers' monthly ST-103 separately from other monthly filers'. Shown as information; no date is generated.	Due ruleNo date: see the source text	2027 dates—	Source · retrievedin.gov/dor/i-am-a/individual/tax-filing-deadlines/ (official source, opens in a new tab)retrieved 2026-09-23

Annual report

no fixed date

The 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.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Business entity report Source text “First Report: The first report is due two years after the business is formed or registered. Filing Cycle: Reports must be filed every other year to maintain the business’ active status. Due Date: The month and day the business was formed or registered. You have until the end of the month before the report is considered past due.”verbatim · inbiz.in.gov · retrieved 2026-09-23	Applies toAn entity formed in Indiana files its business entity report every other year, the first two years after formation. It is due on the month and day the business was formed and is past due after the end of that month. The profile holds the formation month but not the day, so no date is shown. Foreign entities (dated from their registration) are not covered.	Due ruleNo date: see the source text	2027 dates—	Source · retrievedinbiz.in.gov/business-filings/business-entityreport (official source, opens in a new tab)retrieved 2026-09-23

Pass-through entity tax

4 dates

An elective entity-level tax that partnerships and S corporations pay on their owners’ behalf. It applies only to entities that elect it.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Pass-through entity tax estimatescalendar-year S corporation or partnership Source text “For 2026 and later, the estimated tax due dates for calendar year filers are April 20, June 20, September 20, and December 20. Fiscal year filers will have estimated tax due dates on the 20th day of the fourth, sixth, ninth, and twelfth months of their taxable year. If these dates fall on a weekend or holiday, the due date is the next business day.”verbatim · in.gov · retrieved 2026-09-23	Applies toFrom 2026, an electing pass-through entity pays PTET estimates by the 20th day of the 4th, 6th, 9th and 12th months of its taxable year (April 20, June 20, September 20, December 20 for calendar-year filers). A weekend or holiday date moves to the next business day.	Due rule1st PTET estimate: 20th day of the 4th month of the tax year; 2nd PTET estimate: 20th day of the 6th month of the tax year; 3rd PTET estimate: 20th day of the 9th month of the tax year; 4th PTET estimate: 20th day of the 12th month of the tax yearA date on a weekend moves to the next business day; state holidays are not compiled.	2027 dates Apr 20Tue1st PTET estimate Jun 21Mon2nd PTET estimate · moved from Sun Jun 20 Sep 20Mon3rd PTET estimate Dec 20Mon4th PTET estimate State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.	Source · retrievedin.gov/dor/tax-forms/other-forms/ptet/faq/ (official source, opens in a new tab)retrieved 2026-09-23

Pass-through entity tax estimatescalendar-year S corporation or partnership

Source text

“For 2026 and later, the estimated tax due dates for calendar year filers are April 20, June 20, September 20, and December 20. Fiscal year filers will have estimated tax due dates on the 20th day of the fourth, sixth, ninth, and twelfth months of their taxable year. If these dates fall on a weekend or holiday, the due date is the next business day.”verbatim · in.gov · retrieved 2026-09-23

Applies toFrom 2026, an electing pass-through entity pays PTET estimates by the 20th day of the 4th, 6th, 9th and 12th months of its taxable year (April 20, June 20, September 20, December 20 for calendar-year filers). A weekend or holiday date moves to the next business day.

Due rule1st PTET estimate: 20th day of the 4th month of the tax year; 2nd PTET estimate: 20th day of the 6th month of the tax year; 3rd PTET estimate: 20th day of the 9th month of the tax year; 4th PTET estimate: 20th day of the 12th month of the tax yearA date on a weekend moves to the next business day; state holidays are not compiled.

2027 dates

Apr 20Tue1st PTET estimate
Jun 21Mon2nd PTET estimate · moved from Sun Jun 20
Sep 20Mon3rd PTET estimate
Dec 20Mon4th PTET estimate

State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.

Source · retrievedin.gov/dor/tax-forms/other-forms/ptet/faq/retrieved 2026-09-23

Due-date rules

no fixed date

The 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 dates Source text “Notice: If the due date shown falls on a weekend or federal or state holiday, the payment is due the next business day.”verbatim · in.gov · retrieved 2026-09-23	Applies toAn Indiana Department of Revenue due date on a weekend or federal or state holiday moves to the next business day.	Due ruleNo date: see the source text	2027 dates—	Source · retrievedin.gov/dor/i-am-a/individual/tax-filing-deadlines/ (official source, opens in a new tab)retrieved 2026-09-23

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.