New Hampshire State Income Tax Guide (2026)

Scenario 1: Dartmouth-Hitchcock bedside RN in Lebanon, $75,000

Dartmouth-Hitchcock Medical Center is the Upper Valley's academic medical anchor — Level 1 trauma, Norris Cotton Cancer Center, the children's hospital — and one of the largest employers in northern New England. Bedside nursing comp tracks Boston-area average ($72K–$88K for a floor RN), with shift differentials and weekend premiums adding 15%–20%. The combined NH + federal + payroll bill works out to about $487 per biweekly paycheck. The same nurse earning $75K in Boston pays roughly $3,750 in MA state tax plus the 4% Fair Share above $1M (irrelevant at $75K, mentioned for completeness) — a $3,750/year delta in NH's favor. Lebanon and Hanover housing has appreciated post-2020 but still runs $400K–$575K for a 3-bedroom; Boston/Cambridge equivalent is $850K+.

Scenario 2: BAE Systems Nashua engineer, $115,000

BAE Systems Nashua is the largest defense-electronics employer in the state, with roughly 6,000 employees building electronic warfare systems, sensors, and communications gear for the DoD. Cleared engineering work — clearance-required positions provide unusual employment stability. A 3-bedroom in Nashua, Hudson, or Merrimack runs $475K–$625K; the same square footage in suburban Boston (Andover, Chelmsford) runs $725K–$925K. The cleared aerospace cluster in southern NH (BAE plus L3Harris Wilmington MA, plus Lockheed Sudbury MA) makes Nashua a serious career hub for cleared engineering — most engineers live on the NH side specifically for the no-income-tax structure on top of cheaper housing. Property tax on a $525K Nashua home runs about $11,000/year — the structural offset against the income-tax savings, but still net favorable for most engineering comp.

Scenario 3: NH-resident Boston biotech professional commuting from Salem, $165,000

The southern-NH commuter to Boston biotech / tech / finance is one of the largest tax-arbitrage groups in New England. Salem, Nashua, and Hudson sit within 45–55 minutes of Cambridge by commuter rail or car. The catch most commuters underestimate: MA taxes the source of income, so MA-source wages owe MA tax even for NH residents. The savings vs full MA residency is on non-wage income — investment dividends, capital gains, retirement-account distributions — plus the no-sales-tax delta on consumption. For a $165K commuter with $50K of additional capital gains in a given year, the NH residence saves roughly $2,500 vs MA residence on the gains line. For a pure W-2 commuter without significant investment income, the savings is mostly the no-sales-tax line plus the $400K-$600K housing differential between Salem, NH and equivalent Cambridge or Brookline.

Q: I'm thinking about moving from Boston to Salem, NH for the tax savings. Will it actually work?

It depends on whether you're commuting to a Boston employer. If yes, MA still taxes your wage income at the source — the NH residency doesn't save you the 5% MA tax on your salary. If you have substantial investment income on top of W-2 wages, NH residency saves the MA 5% on that piece. If you have a high-net-worth situation approaching retirement, the estate-tax differential (MA $2M cliff vs NH zero) is the bigger story and worth significantly more than the wage-tax math. The cost of the NH move is the property-tax delta — for a comparable home, you'll pay roughly $4K–$6K more per year in NH property tax than in suburban MA. For pure W-2 commuters with modest investments, the math is close to a wash.

Q: What does the I&D repeal actually mean for my filing?

Effective tax year 2025 (returns filed in 2026), NH residents no longer file the DP-10 Interest & Dividends Tax return. The I&D obligation was already minor for most filers — only investment income above $2,400 single / $4,800 joint triggered any tax — but the repeal eliminates the filing entirely. Practical effect: most NH residents file federal only and have no state return obligation at all. A handful of edge cases (business-tax filings for NH-based businesses, etc.) still apply, but for individual W-2 and retirement filers, the state return is now unnecessary.

Q: Why is NH property tax so high — is it likely to drop?

Probably not in any meaningful way. The legislative consensus has consistently held that NH's no-income-tax-no-sales-tax brand is worth more than marginal property-tax relief. Reform attempts surface regularly but rarely advance. For homeowners, the effective response is town-by-town research before purchase (Portsmouth lower than Manchester) plus individual abatement appeals when warranted. For renters, property tax is mostly invisible — passed through to rent but at a discount given the broader tax structure. The deeper structural issue is that NH towns rely on property tax for nearly all local revenue, including school funding, which constitutional courts have repeatedly reviewed without producing major reform.

Q: Does New Hampshire tax Social Security or pension income?

No. NH has 0% income tax on every dollar of retirement income — Social Security, pensions (private and public), 401(k) distributions, IRA distributions, capital gains from retirement-account withdrawals. Post-Act 219 repeal effective 2025, NH also has no tax on interest and dividends earned outside retirement accounts. For retirees with substantial investment income, NH is one of the most favorable retirement-stage tax states in the country — better than Florida for high-investment-income retirees because NH adds the no-sales-tax layer. The persistent caveat is property tax, which the senior exemption programs at the town level partially address for income-qualified residents.

Q: Is the NH-MA estate-tax delta really worth a residency change?

For HNW families approaching retirement, frequently yes. Massachusetts has the most aggressive state estate tax in the country — kicks in at $2M (well below the federal $13.99M exemption) at graduated rates up to 16%. A Boston-area family with $5M in net worth dying as MA residents owes roughly $400K in MA estate tax that an NH-resident family would not owe. At $10M, the MA estate tax bill is roughly $1M+. This is the single biggest reason high-NW Boston-area families execute pre-retirement NH moves. The math is dramatic and durable — NH has shown no political appetite for an estate tax. Plan the move 3+ years ahead with a qualified estate attorney; MA's domicile audit posture is aggressive on high-NW exits.