Alaska business filing dates, 2027

State-level due dates for businesses filing in Alaska. 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 .ics5 dated lines in the calendar file · sources last read 2026-09-23

Income / franchise tax return

1 date

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
Alaska corporate income tax paymentcalendar-year C corporation Source text “Corporations must make quarterly estimated payments and the total tax is generally due the 15th day of the fourth month after the end of the tax year. There are no extensions to pay the tax.”verbatim · akleg.gov · retrieved 2026-09-23 “(h) When the last day for performing any act under any provision of AS 43 falls on a Saturday, Sunday, or a legal holiday, the performance of that act is considered timely if it is performed on the next succeeding day that is not a Saturday, Sunday, or legal holiday. "Legal Holiday" means a legal holiday in this state or a bank holiday observed by the Federal Reserve System.”verbatim · 15 AAC 05.310(h) · akleg.gov · retrieved 2026-09-26 “(a) The following days are legal holidays: (1) the first of January, known as New Year's Day;”verbatim · AS 44.12.010 · akleg.gov · retrieved 2026-09-26 “For holidays falling on Saturday, Federal Reserve Banks and Branches will be open the preceding Friday; however, the Board of Governors will be closed. For holidays falling on Sunday, all Federal Reserve offices will be closed the following Monday.”verbatim · Federal Reserve Board, K.8 Holidays Observed by the Federal Reserve System 2026-2030 · federalreserve.gov · retrieved 2026-09-24	Applies toA corporation's Alaska income tax is generally due the 15th day of the fourth month after the end of the tax year. There is no extension of time to pay.	Due ruleTax payment: 15th day of the 4th month after the tax year endsIf this date falls on a Saturday, Sunday or a Alaska legal holiday or Federal Reserve bank holiday, it moves to the next business day — 15 AAC 05.310(h). Not every such holiday is compiled: Composes two incomplete sets: Alaska proclamation days and Federal Reserve closures on short notice are not listed. Days designated by public proclamation of the President or the Governor (AS 44.12.010(a)(14)) are not listed. AS 44.12.025 makes the Friday before a Saturday holiday a legal holiday "for officers and employees of the state" only, so no Friday is listed. Martin Luther King, Jr.'s Birthday is left out: (a)(2) makes it a legal holiday "as provided in (b)", which limits it to state employees for employment purposes (the composed Federal Reserve set covers that Monday). K.8 lists the scheduled holidays only; a closure ordered on short notice (a national day of mourning, for example) is not on it.akleg.gov/basis/aac.asp?media=print&secStart=15.05.310&secEnd=15.05.310 (official source, opens in a new tab)retrieved 2026-09-26 · 15 AAC 05.310(h)akleg.gov/statutesPDF/Title-44.pdf (official source, opens in a new tab)retrieved 2026-09-26 · AS 44.12.010federalreserve.gov/aboutthefed/k8.htm (official source, opens in a new tab)retrieved 2026-09-24 · Federal Reserve Board, K.8 Holidays Observed by the Federal Reserve System 2026-2030	2027 dates Apr 15ThuTax payment State legal holidays are not compiled: if this date is a state holiday, the deadline moves to the next business day.	Source · retrievedakleg.gov/basis/get_documents.asp?docid=2388&session=34 (official source, opens in a new tab)retrieved 2026-09-23
Alaska corporate income tax return Source text “Corporations file returns annually, with the Alaska return due 30 days after the federal tax return is due. Alaska honors the federal filing extensions.”verbatim · akleg.gov · retrieved 2026-09-23	Applies toA corporation that must file a federal income tax return files its Alaska return 30 days after the federal return is due. Alaska honors federal filing extensions, so a federal extension carries the Alaska return with it; neither the federal due date nor the extended date is computed on this line.	Due ruleNo date: see the source text	2027 dates—	Source · retrievedakleg.gov/basis/get_documents.asp?docid=2388&session=34 (official source, opens in a new tab)retrieved 2026-09-23
Alaska partnership return (corporate partner) Source text “(a) If a corporation, or a partnership that has a corporation as a partner, is required to make a return under the provisions of the Internal Revenue Code, it shall file with the department, within 30 days after the federal return is required to be filed, a return setting out (1) the amount of tax due under this chapter, less credits claimed against the tax; and (2) other information for the purpose of carrying out the provisions of this chapter that the department requires.”verbatim · akleg.gov · retrieved 2026-09-23	Applies toOnly a partnership that the preparer attests has a corporation as a partner files an Alaska return, within 30 days after its federal return is required to be filed. A partnership whose partners are all individuals does not file. The date follows the federal due date, which this line does not compute.	Due ruleNo date: see the source text	2027 dates—	Source · retrievedakleg.gov/statutesPDF/Title-43.pdf (official source, opens in a new tab)retrieved 2026-09-23

Alaska corporate income tax paymentcalendar-year C corporation

Source text

“Corporations must make quarterly estimated payments and the total tax is generally due the 15th day of the fourth month after the end of the tax year. There are no extensions to pay the tax.”verbatim · akleg.gov · retrieved 2026-09-23

“(h) When the last day for performing any act under any provision of AS 43 falls on a Saturday, Sunday, or a legal holiday, the performance of that act is considered timely if it is performed on the next succeeding day that is not a Saturday, Sunday, or legal holiday. "Legal Holiday" means a legal holiday in this state or a bank holiday observed by the Federal Reserve System.”verbatim · 15 AAC 05.310(h) · akleg.gov · retrieved 2026-09-26

“(a) The following days are legal holidays: (1) the first of January, known as New Year's Day;”verbatim · AS 44.12.010 · akleg.gov · retrieved 2026-09-26

“For holidays falling on Saturday, Federal Reserve Banks and Branches will be open the preceding Friday; however, the Board of Governors will be closed. For holidays falling on Sunday, all Federal Reserve offices will be closed the following Monday.”verbatim · Federal Reserve Board, K.8 Holidays Observed by the Federal Reserve System 2026-2030 · federalreserve.gov · retrieved 2026-09-24

Applies toA corporation's Alaska income tax is generally due the 15th day of the fourth month after the end of the tax year. There is no extension of time to pay.

Due ruleTax payment: 15th day of the 4th month after the tax year endsIf this date falls on a Saturday, Sunday or a Alaska legal holiday or Federal Reserve bank holiday, it moves to the next business day — 15 AAC 05.310(h). Not every such holiday is compiled: Composes two incomplete sets: Alaska proclamation days and Federal Reserve closures on short notice are not listed. Days designated by public proclamation of the President or the Governor (AS 44.12.010(a)(14)) are not listed. AS 44.12.025 makes the Friday before a Saturday holiday a legal holiday "for officers and employees of the state" only, so no Friday is listed. Martin Luther King, Jr.'s Birthday is left out: (a)(2) makes it a legal holiday "as provided in (b)", which limits it to state employees for employment purposes (the composed Federal Reserve set covers that Monday). K.8 lists the scheduled holidays only; a closure ordered on short notice (a national day of mourning, for example) is not on it.akleg.gov/basis/aac.asp?media=print&secStart=15.05.310&secEnd=15.05.310retrieved 2026-09-26 · 15 AAC 05.310(h)akleg.gov/statutesPDF/Title-44.pdfretrieved 2026-09-26 · AS 44.12.010federalreserve.gov/aboutthefed/k8.htmretrieved 2026-09-24 · Federal Reserve Board, K.8 Holidays Observed by the Federal Reserve System 2026-2030

2027 dates

Apr 15ThuTax payment

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

Source · retrievedakleg.gov/basis/get_documents.asp?docid=2388&session=34retrieved 2026-09-23

Alaska corporate income tax return

Source text

“Corporations file returns annually, with the Alaska return due 30 days after the federal tax return is due. Alaska honors the federal filing extensions.”verbatim · akleg.gov · retrieved 2026-09-23

Applies toA corporation that must file a federal income tax return files its Alaska return 30 days after the federal return is due. Alaska honors federal filing extensions, so a federal extension carries the Alaska return with it; neither the federal due date nor the extended date is computed on this line.

Due ruleNo date: see the source text

2027 dates—

Source · retrievedakleg.gov/basis/get_documents.asp?docid=2388&session=34retrieved 2026-09-23

Alaska partnership return (corporate partner)

Source text

“(a) If a corporation, or a partnership that has a corporation as a partner, is required to make a return under the provisions of the Internal Revenue Code, it shall file with the department, within 30 days after the federal return is required to be filed, a return setting out (1) the amount of tax due under this chapter, less credits claimed against the tax; and (2) other information for the purpose of carrying out the provisions of this chapter that the department requires.”verbatim · akleg.gov · retrieved 2026-09-23

Applies toOnly a partnership that the preparer attests has a corporation as a partner files an Alaska return, within 30 days after its federal return is required to be filed. A partnership whose partners are all individuals does not file. The date follows the federal due date, which this line does not compute.

Due ruleNo date: see the source text

2027 dates—

Source · retrievedakleg.gov/statutesPDF/Title-43.pdfretrieved 2026-09-23

Estimated tax

Unsupported

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.

Why no dates: No official source confirmed yet for Alaska's estimated tax payment due dates.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Estimated tax	Applies toShown once verified	Due ruleUnsupported	2027 datesNo official source confirmed yet for Alaska's estimated tax payment due dates.	Source · retrievedNo verified source on file

Withholding

no fixed date

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
No Alaska income tax withholding Source text “(17) because the state has no personal income tax or sales tax, nonresident workers use services provided by the state but do not contribute fairly to the costs of those services;”verbatim · labor.alaska.gov · retrieved 2026-09-23	Applies toAlaska has no personal income tax, so employers withhold no state income tax from wages.	Due ruleNo date: see the source text	2027 dates—	Source · retrievedlabor.alaska.gov/lss/forms/Pam400.pdf (official source, opens in a new tab)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
Alaska quarterly UI contribution report Source text “The report and wage schedule must be received by the last day of the month following the end of the calendar quarter.”verbatim · labor.alaska.gov · retrieved 2026-09-23	Applies toAn employer the preparer lists as a quarterly Alaska unemployment-insurance filer: the quarterly contribution report and wage schedule must be received by the last day of the month after the quarter (April 30, July 31, October 31, January 31). The source states no weekend rule, so the stated date is shown. An employer that ceases business files within 10 days after ceasing, which is not dated here.	Due ruleQuarterly contribution report: last day of the month after the quarter ends	2027 dates Jan 31Sun†Quarterly contribution report Apr 30FriQuarterly contribution report Jul 31Sat†Quarterly contribution report Oct 31Sun†Quarterly contribution report † Falls on a Sunday; the source states no weekend rule. Falls on a Saturday; the source states no weekend rule.	Source · retrievedlabor.alaska.gov/estax/documents/taxbook.pdf (official source, opens in a new tab)retrieved 2026-09-23

Alaska quarterly UI contribution report

Source text

“The report and wage schedule must be received by the last day of the month following the end of the calendar quarter.”verbatim · labor.alaska.gov · retrieved 2026-09-23

Applies toAn employer the preparer lists as a quarterly Alaska unemployment-insurance filer: the quarterly contribution report and wage schedule must be received by the last day of the month after the quarter (April 30, July 31, October 31, January 31). The source states no weekend rule, so the stated date is shown. An employer that ceases business files within 10 days after ceasing, which is not dated here.

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

2027 dates

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

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

Source · retrievedlabor.alaska.gov/estax/documents/taxbook.pdfretrieved 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
No Alaska state sales tax Source text “(17) because the state has no personal income tax or sales tax, nonresident workers use services provided by the state but do not contribute fairly to the costs of those services;”verbatim · labor.alaska.gov · retrieved 2026-09-23	Applies toAlaska has no state-level sales tax. Local governments may levy their own sales taxes, which are not covered here.	Due ruleNo date: see the source text	2027 dates—	Source · retrievedlabor.alaska.gov/lss/forms/Pam400.pdf (official source, opens in a new tab)retrieved 2026-09-23

Annual report

Unsupported

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.

Why no dates: No official source confirmed yet for Alaska's annual report due date.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Annual report	Applies toShown once verified	Due ruleUnsupported	2027 datesNo official source confirmed yet for Alaska's annual report due date.	Source · retrievedNo verified source on file

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 “(h) When the last day for performing any act under any provision of AS 43 falls on a Saturday, Sunday, or a legal holiday, the performance of that act is considered timely if it is performed on the next succeeding day that is not a Saturday, Sunday, or legal holiday. “Legal Holiday” means a legal holiday in this state or a bank holiday observed by the Federal Reserve System.”verbatim · akleg.gov · retrieved 2026-09-23	Applies toWhen the last day for an act under Alaska's tax statutes (AS 43) falls on a Saturday, Sunday or legal holiday, it is timely on the next day that is none of those.	Due ruleNo date: see the source text	2027 dates—	Source · retrievedakleg.gov/statutesPDF/aac%20Title%2015.pdf (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.