If you conducted business or earned income in New Hampshire, you may be subject to New Hampshire state taxes. If this applies to you, please find below the details regarding the R&D tax credit application, key tax deadlines, and extension information for 2024.
In New Hampshire, businesses aiming to claim the Research and Development tax credit must complete and receive approval for an application.
The deadlines for filing the Research and Development Credits are aligned with the state's income tax filing deadlines for different business entities.
In New Hampshire, you may:
File your taxes online with Granite Tax Connect
When filing by mail, ensure that your documents are postmarked by the due date.
Federal filing is required.
Amendments are not allowed.
Application Information
New Hampshire's R&D tax credit program requires the filing and approval of an application to claim the credit.
Here is how you can apply
Here is how you can apply
Log into Granite Tax Connect (GTC) and create an account.
Submit Form DP-165 – Research & Development Tax Credit Application
You may also download Form DP-165 here and mail it to:
NH DRA
PO Box 457
Concord NH 03302-0457
The R&D tax credit application must be postmarked no later than June 30 following the taxable period during which the R&D expenditure was made or incurred.
This applies to all business types, including S-Corporations, C-Corporations, partnerships, and sole proprietorships.
Once the application is submitted, acknowledgment letters are sent by July 31, and award notifications are mailed by September 30.
Taxpayers must attach a copy of the R&D award letter to their business tax return when they file and claim the credit on the DP-160 and/or the BET return.
Overview, Eligibility, Limitations, and Allocation Cap
Overview, Eligibility, Limitations, and Allocation Cap
Research and Development Tax Credit Program
The New Hampshire R&D Tax Credit provides businesses with a permanent credit against both business profits and business enterprise taxes.
This credit applies to qualified manufacturing research and development expenditures incurred within New Hampshire during the fiscal year. Eligible expenditures include wages that qualify for the federal credit under IRC §41.
Eligible Entities
C-Corporations, S-Corporations, LLCs, Partnerships
Credit Carryforward
Any unused portion of the tax credit can be carried forward for up to five years.
If the credit is not fully applied against the business profits tax liability, the remaining amount can be used to offset the taxpayer’s business enterprise tax liability.
The research credit is not refundable.
Credit Limitations
As of 2017, the maximum credit allowed for all taxpayers is $7,000,000.
The credit is based upon 10% of the excess of the qualified R&D expenses for the taxable year over the base amount.
Wages for which a credit is taken shall not also be eligible under the Economic Revisitation Zone Tax Credit (ERZTC) (RSA 162-N:7).
Each taxpayer's share of the Research & Development tax credit shall not exceed $50,000 per fiscal year. Each credit shall be used to offset the taxpayer's tax liability within the subsequent 5 tax years.
What happens if the amount requested by all applicants exceeds the allowable award amount for the year?
If the total amount requested by all applicants has exceeded the allowable award amount during the year of the program, the requested amounts are prorated for all applicants who filed a completed application on time.
Are there limitations on how much credit is awarded to a business organization?
The amount of the credit shall be the lesser of 10% of the business organization's qualified manufacturing research and development expenditures or $50,000. In any given fiscal year, in the event that the aggregate amount of credits applied for exceeds $7,000,000, all credits for that year shall be reduced proportionately.
Partnership
You must file in New Hampshire by March 15, 2025.
Applicable R&D Forms
Form DP-165 – Research & Development Tax Credit Application
File the above form with the following tax forms:
Form NH-1065 – Partnership Business Profits Tax Return
Form BET – Business Enterprise Tax Return
Extension to File Taxes in New Hampshire for 2024
Taxes owed in New Hampshire for the tax year 2024 must be paid by March 15, 2025.
If you have paid 100% of the BET and BPT determined to be due by the due date of the tax, you will be granted an automatic 7-month extension to file your New Hampshire BET and BPT returns.
The extension deadline is October 15, 2025.
Note that this extension pertains to the filing deadline, not the payment deadline.
Payment of taxes owed is still due by March 15, 2025.
S-Corporation / C-Corporation
You must file in New Hampshire by April 15, 2025.
Applicable R&D Forms
Form DP-165 – Research & Development Tax Credit Application
File the above form with the following tax forms:
Form NH-1120 – New Hampshire Corporate Business Profits Tax Return
Form BET – Business Enterprise Tax Return
Extension to File Taxes in New Hampshire for 2024
Taxes owed in New Hampshire for the tax year 2024 must be paid by April 15, 2025.
If you have paid 100% of the BET and BPT determined to be due by the due date of the tax, you will be granted an automatic 7-month extension to file your New Hampshire BET and BPT returns.
The extension deadline is November 15, 2025.
Note that this extension pertains to the filing deadline, not the payment deadline.
Payment of taxes owed is still required by April 15, 2025.
Sole-Proprietorship
Sole-Proprietorship
New Hampshire currently does not have an Individual Income Tax.
Other Tax Considerations
New Hampshire imposes the Interest and Dividends Tax on residents who receive interest and dividend income from investments. You must file in New Hampshire by April 15, 2025.
Applicable R&D Forms
Not eligible
File the above form with the following tax forms:
Form DP-10 – New Hampshire Interest & Dividends Tax Return
Extension to File Taxes in New Hampshire for 2024
Taxes owed in New Hampshire for the tax year 2024 must be paid by April 15, 2025.
If you have paid 100% of the Interest & Dividends tax determined to be due by the due date of the tax, you will be granted an automatic 7-month extension to file your New Hampshire Interest and Dividends tax without filing Form DP-59-A.
The extension deadline is November 15, 2025.
Note that this extension pertains to the filing deadline, not the payment deadline.
Payment of taxes owed is still required by April 15, 2025.
References
We strive to ensure the accuracy of the information on this page, but it is not intended as tax or legal advice. Please use your own professional judgment and consult with a tax professional. Any advice you provide in connection with tax return preparation must comply in full with the requirements of IRS Circular 230.