New Hampshire — Payment Form and Application for Extension of Time
More about the New Hampshire Form BT-EXT Voucher
We last updated New Hampshire Form BT-EXT in March 2025 from the New Hampshire Department of Revenue Administration. This form is for income earned in tax year 2024, with tax returns due in April 2025. We will update this page with a new version of the form for 2026 as soon as it is made available by the New Hampshire government.
Other New Hampshire Corporate Income Tax Forms:
In addition to information about New Hampshire's income tax brackets, Tax-Brackets.org provides a total of 52 New Hampshire income tax forms, as well as many federal income tax forms. Here's a list of some of the most commonly used New Hampshire tax forms:
| Form Code | Form Name |
|---|---|
| NH-1040 Instructions | Proprietorship or Jointly Owned Property Business |
| Form BT-EXT | Payment Form and Application for Extension of Time |
| Form BET | Business Enterprise Tax Return |
| AFFL-SCHD | Affiliations Schedule |
| Schedule III | Combined Business Profits Tax Return Scehdule III |
View all 52 New Hampshire Income Tax Forms
Disclaimer: While we do our best to keep Form BT-EXT up to date and complete on Tax-Brackets.org, we cannot be held liable for errors or omissions. Is this form missing or out-of-date? Please let us know so we can fix it!
Tax Form Sources:
- New Hampshire Department of Revenue Administration ( http://www.nh.gov/revenue/
) - Department of Revenue Administration Income Tax Forms ( http://www.nh.gov/revenue/forms/index.htm )