New Hampshire business filing dates, 2027

State-level due dates for businesses filing in New Hampshire. 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 .ics6 dated lines in the calendar file · sources last read 2026-09-23

Income / franchise tax return

2 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
Business profits tax return (partnership)calendar-year partnership Source text “I. Every business organization having gross business income in excess of $92,000 as defined by RSA 77-A:1, VI, during the taxable period, shall on or before the fifteenth day of the third month in the case of organizations required to file a United States partnership tax return, the fifteenth day of the fifth month in the case of organizations required to file a United States exempt organization tax return, and the fifteenth day of the fourth month in the case of all other business organizations, following expiration of its taxable period, make a return to the commissioner.”verbatim · gc.nh.gov · retrieved 2026-09-23 “For tax years beginning January 1, 2023, the commissioner shall biennially adjust this threshold amount rounding to the nearest $1,000 based on the 2-year (24-month) percentage change in the Consumer Price Index for All Urban Consumers, Northeast Region as published by the Bureau of Labor Statistics, United States Department of Labor using the amount published for the month of June in the year prior to the start of the tax year.”verbatim · gc.nh.gov · retrieved 2026-09-23	Applies toA partnership the preparer attests has gross business income over the New Hampshire filing threshold (the statute's $92,000, which the commissioner adjusts every two years for tax years from 2023; the preparer attests against the current amount) files its business profits tax return by the 15th day of the 3rd month after its taxable period. The statute states no weekend rule, so the stated date is shown.	Due ruleNH-1065: 15th day of the 3rd month after the tax year ends	2027 dates Mar 15MonNH-1065	Source · retrievedgc.nh.gov/rsa/html/V/77-A/77-A-6.htm (official source, opens in a new tab)retrieved 2026-09-23
Business profits tax return (corporation or proprietorship)calendar-year Schedule C filer, S corporation or C corporation Source text “I. Every business organization having gross business income in excess of $92,000 as defined by RSA 77-A:1, VI, during the taxable period, shall on or before the fifteenth day of the third month in the case of organizations required to file a United States partnership tax return, the fifteenth day of the fifth month in the case of organizations required to file a United States exempt organization tax return, and the fifteenth day of the fourth month in the case of all other business organizations, following expiration of its taxable period, make a return to the commissioner.”verbatim · gc.nh.gov · retrieved 2026-09-23 “For tax years beginning January 1, 2023, the commissioner shall biennially adjust this threshold amount rounding to the nearest $1,000 based on the 2-year (24-month) percentage change in the Consumer Price Index for All Urban Consumers, Northeast Region as published by the Bureau of Labor Statistics, United States Department of Labor using the amount published for the month of June in the year prior to the start of the tax year.”verbatim · gc.nh.gov · retrieved 2026-09-23	Applies toA corporation or proprietorship the preparer attests has gross business income over the New Hampshire filing threshold (the statute's $92,000, which the commissioner adjusts every two years for tax years from 2023; the preparer attests against the current amount), and is not an exempt organization (5th month, not dated here), files its business profits tax return by the 15th day of the 4th month after its taxable period. The statute states no weekend rule, so the stated date is shown.	Due ruleBPT return: 15th day of the 4th month after the tax year ends	2027 dates Apr 15ThuBPT return	Source · retrievedgc.nh.gov/rsa/html/V/77-A/77-A-6.htm (official source, opens in a new tab)retrieved 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
Business profits tax estimatescalendar-year filer Source text “I. (a) All business organizations required under RSA 77-A:6, II to make payments of estimated tax shall make such payments in installments as follows: 25 percent is due and payable on the fifteenth day of the fourth month of the subsequent taxable year; 25 percent is due and payable on the fifteenth day of the sixth month of the subsequent taxable year; 25 percent is due and payable on the fifteenth day of the ninth month of the subsequent taxable year; and 25 percent is due and payable on the fifteenth day of the twelfth month of the subsequent taxable year.”verbatim · gc.nh.gov · retrieved 2026-09-23	Applies toA business organization (including a proprietorship) the preparer attests must pay New Hampshire estimated business tax pays 25% by the 15th day of the 4th, 6th, 9th and 12th months of its taxable year. The statute states no weekend rule, so the stated date is shown.	Due rule1st estimate: 15th day of the 4th month of the tax year; 2nd estimate: 15th day of the 6th month of 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	2027 dates Apr 15Thu1st estimate Jun 15Tue2nd estimate Sep 15Wed3rd estimate Dec 15Wed4th estimate	Source · retrievedgc.nh.gov/rsa/html/V/77-A/77-A-7.htm (official source, opens in a new tab)retrieved 2026-09-23

Withholding

Unsupported

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.

Why no dates: No official source confirmed yet for New Hampshire's employer withholding due dates.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Withholding	Applies toShown once verified	Due ruleUnsupported	2027 datesNo official source confirmed yet for New Hampshire's employer withholding due dates.	Source · retrievedNo verified source on file

Unemployment insurance

Unsupported

Employer 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 New Hampshire'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 New Hampshire's unemployment insurance report due dates.	Source · retrievedNo verified source on file

Sales and use tax

Unsupported

Returns for sales and use tax collected under a permit. The agency assigns each permit holder a filing frequency; the dates differ by frequency.

Why no dates: No official source confirmed yet for New Hampshire's sales tax due dates.

Obligation	Applies to	Due rule	2027 dates	Source · retrieved
Sales and use tax	Applies toShown once verified	Due ruleUnsupported	2027 datesNo official source confirmed yet for New Hampshire's sales tax due dates.	Source · retrievedNo verified source on file

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 New Hampshire'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 New Hampshire's annual report due date.	Source · retrievedNo verified source on file

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.