Owners usually ask the same questions. Do we have to file? What do we need? When is it due, and can we extend? How does this touch our partners' reporting? This guide covers eligibility, deadlines, preparation, how the state and federal forms differ, related New Hampshire taxes, and common mistakes. Details below reflect tax year 2025 instructions, so check the DRA's current forms for your filing year.
Key Takeaways
- NH-1065 is a state Business Profits Tax return, separate from IRS Form 1065.
- Filing depends on federal classification, New Hampshire activity, and the gross income threshold.
- A filing extension never extends payment; 100% of tax due is owed by the original deadline.
- The state return, federal return, K-1s, and BET filings should be reconciled together.
What Is New Hampshire Form NH-1065 and Who May Need to File?
For tax year 2025, the form is titled Partnership Business Profits Tax Return. It calculates the partnership's entity-level New Hampshire Business Profits Tax (BPT), starting from federal Schedule K amounts such as ordinary business income. It is filed with the New Hampshire Department of Revenue Administration (DRA), not the IRS.
Entity Classification Comes First
The 2025 NH-1065 instructions cover entities taxed federally as partnerships, including multi-member LLCs. Which return you file depends on that classification:
- A multi-member LLC taxed as a partnership generally uses NH-1065.
- An LLC that elected corporate treatment files based on that elected entity type.
- A single-member LLC follows its member's entity type. If the owner is a partnership, the single-member entity uses NH-1065.
The Filing Test
A partnership files when it has New Hampshire business activity and worldwide gross business income over $109,000 (for periods beginning on or after January 1, 2025). This is a gross test.
Costs, expenses, and losses aren't deducted when measuring it, so a money-losing partnership can still need to file. The instructions describe no separate exemption for inactive entities.
What Counts as New Hampshire Activity
State law defines business activity as a substantial economic presence in New Hampshire, shown by purposeful direction toward the state. The DRA looks at the frequency, quantity, and systematic nature of economic contacts.
That matters most for out-of-state businesses. New Hampshire customers, property, employees, or operations can create nexus even with no office in the state.
Nexus and activity also control when filing ends. A final return applies only when the organization no longer exists or no longer has New Hampshire business activity.
When Must NH Form 1065 Be Filed?
Standard Due Dates
- Calendar-year partnerships: March 15 following year-end.
- Fiscal-year partnerships: the 15th day of the third month after the period closes.
- Short tax years: the same third-month rule applies.
State law moves a deadline to the next business day when it lands on a Saturday, Sunday, or legal holiday. The DRA's published event calendar, however, labels March 15, 2026 as the due date without mentioning an adjustment. The safe approach is to treat the printed date as your target and not lean on the weekend rule.
Extensions
Extensions are straightforward, but the payment rule trips people up:
- Pay 100% of the BPT and BET determined due by the original deadline.
- If the balance is fully paid, you get an automatic 7-month filing extension with no extension form.
- If you owe a balance, submit BT-EXT by paper (postmarked by the original date) or pay online through Granite Tax Connect before midnight.
Short-period returns can also request extra time by letter, with 100% of tax due enclosed before the original deadline.
Penalties and Interest
| Charge | Rule |
|---|---|
| Late filing | Per month or part-month, the greater of 5% of tax due or $10, capped at the greater of 25% or $50 |
| Late payment | 10% of the unpaid or underpaid amount |
| Interest | 9% annually for calendar-year 2026 |
The late-filing statute allows exceptions for qualifying extensions and reasonable cause without willful neglect. Interest runs from the original payment date until you pay, so an extension doesn't stop it.
How to Prepare and File NH-1065
Preparation Checklist
Gather these before you start:
- Legal name and federal EIN
- New Hampshire account information
- Tax year and federal tax classification
- Ownership details and responsible-party contacts
- Income statement, balance sheet, and general ledger
- Gross receipts, deductions, and fixed-asset records
- Payroll data and partner contributions and distributions
- Prior-year filings
Use the Federal Return as a Starting Point Only
Federal Form 1065 figures feed the state return, but they don't finish it. New Hampshire has its own adjustments:
- Disallows federal bonus depreciation
- Requires add-back of all guaranteed payments to partners (line 1(d))
- Allows a separate deduction for reasonable compensation for partners' services
- Requires supporting records when compensation deductions exceed $75,000
- Requires add-backs of certain net-income, franchise, and capital-stock taxes (the BET is not one of them)
- Stays tied to the Internal Revenue Code as of December 31, 2018, so later federal changes do not flow through automatically
The Filing Workflow
- Confirm what's required: NH-1065, BT-Summary, and any BET return.
- Calculate state figures from current instructions and reconcile them to the books and the federal return.
- Prepare partner-level information and supporting statements.
- Check attachments, signatures, and payment details before submitting.
Attachments, Forms, and Submission
File NH-1065 together with BT-Summary. Attach federal Form 1065 pages 1-6 and all applicable schedules. Add DP-80 for apportionment, BET-CW for BET-only credit, or DP-160 for other credits, as relevant.
The BT-Summary instructions permit paper filing by mail to NH DRA, PO Box 637, Concord, NH 03302-0637. Fax and email are not accepted.
Granite Tax Connect (GTC) handles online filing, amendments, and payments. There is no blanket e-file mandate for NH-1065.
After you submit in GTC, save the confirmation page. It proves submission, not substantive acceptance, so retain your full filing package as well.
How NH-1065 Connects With Federal Form 1065, Schedule K-1, and Other New Hampshire Taxes
Federal vs. State Forms
| Federal Form 1065 | NH-1065 | |
|---|---|---|
| Filed with | IRS | NH DRA |
| Purpose | Information return passing income, deductions, and credits to partners | Entity-level Business Profits Tax calculation |
| Substitute for the other? | No | No |
Schedule K, Schedule K-1, and NH-1065
Schedule K summarises all partners' shares. Each Schedule K-1 reports one partner's share, which the partner uses on a personal return. NH-1065 does neither. It computes entity-level state tax using Schedule K amounts as inputs.
Why State and Federal Figures Differ
Suppose a partnership claims bonus depreciation federally. New Hampshire disallows it, so state income runs higher than the federal figure. Apportionment can also shift the result. New Hampshire uses a single sales factor for BPT, so a partnership with sales in several states may tax only part of its income in New Hampshire.
BPT and BET Together
| BPT | BET | |
|---|---|---|
| TY2025 rate | 7.5% | 0.55% |
| Threshold (periods beginning on or after Jan. 1, 2025) | Over $109,000 gross income | Over $298,000 receipts or enterprise value base |
| Base | NH taxable business profits | Compensation + interest + dividends paid |
BET paid can credit against BPT. Unused credit carries forward 10 taxable periods. NH-1065's net BPT goes on line 1(b) of BT-Summary, and BET is filed on its own return.
These are entity-level taxes. They are separate from each partner's personal federal or state obligations.
Multi-State and International Owners
The filing test turns on classification, New Hampshire activity, and gross income. Nonresident or foreign partners don't change that test. Partner-specific withholding or composite-return rules should be confirmed with the DRA or an adviser. Unitary businesses use combined reporting, and multi-jurisdiction entities file DP-80 for apportionment.
Common NH-1065 Mistakes and When to Seek Professional Help
Mistakes to Avoid
- Filing federal Form 1065 and assuming the state is covered
- Using an outdated form (the DRA cites this as a cause of processing delays)
- Leaving out federal pages or BT-Summary
- Assuming an extension covers payment
- Overlooking nexus created by out-of-state operations
- Skipping the federal-to-state reconciliation
When you amend, file a corrected BT-Summary plus the appropriate BET or BPT returns. Check the amended-return box and attach the applicable schedules and federal pages.
Review Before You File
Before you submit, verify:
- Partner details and ownership changes
- Contributions, distributions, and tax elections
- Final-return status
- Every federal-to-state adjustment
When to Get Help
Bring in a professional if any of these apply:
- Foreign owners or multiple states
- Related-party transactions
- Large swings in income
- A change in entity classification
- An amended federal return
- Uncertainty about BET or BPT requirements
Complex filings are easier with experienced support. VJM Global prepares Forms 1065, 1120, and 1040 along with federal and state returns for LLCs, S-Corps, C-Corps, and other structures.
The firm serves New Hampshire filers remotely for US and international clients and does not operate a New Hampshire office.
Frequently Asked Questions
When must NH Form 1065 be filed?
Calendar-year partnerships file by March 15 after year-end. Fiscal and short years are due the 15th day of the third month after the period closes. Weekend and holiday adjustments apply, and a 7-month extension needs full payment by the original date.
What is NH Form 1065 used for?
It calculates the partnership's New Hampshire Business Profits Tax at the entity level. It captures state adjustments and apportionment that federal Form 1065 doesn't.
Is NH Form 1065 the same as a Schedule K-1?
No. A federal Schedule K-1 reports one partner's share of partnership items. NH-1065 is the partnership's own state BPT return.
Who needs to file NH Form 1065?
Entities taxed federally as partnerships, including multi-member LLCs, with New Hampshire business activity and worldwide gross business income over $109,000 for periods beginning on or after January 1, 2025.
What is the difference between federal Form 1065 and New Hampshire Form NH-1065?
Federal Form 1065 is an information return filed with the IRS. NH-1065 is a tax return filed with the New Hampshire DRA. One doesn't replace the other.
Does a multi-member LLC need to file NH Form 1065?
Yes, if it's taxed federally as a partnership and meets the activity and income tests. An LLC that elected corporate treatment follows its elected entity type instead.
