New Hampshire is one of only nine states with no personal income tax, and as of January 1, 2025 that protection got even wider: the state's Interest and Dividends Tax, the last remaining individual-level tax on investment income, was fully repealed. So on the personal income-tax side, there is genuinely nothing to reconcile bonus depreciation against, because there is no New Hampshire personal return. But that is not the whole story, and it is where a lot of owners get tripped up: New Hampshire's Business Profits Tax (BPT) is a separate, entity-and-activity-based tax under RSA 77-A, and it reaches any 'business organization' carrying on business activity in the state, a definition that explicitly covers sole proprietorships, not just LLCs and partnerships. Once a rental's gross business income clears the state's filing threshold, the owner is filing a BPT return regardless of whether title sits in an LLC or in their own name, and the BPT does not conform to federal bonus depreciation.
Apex Reserve Group, based in Irvine, California, prepares engineering-based cost segregation studies for real estate investors nationwide, including short-term rental and long-term rental owners throughout New Hampshire. This page is general educational information, not tax or legal advice, and every property and ownership structure is different, so confirm the specifics with a qualified CPA or tax attorney before making a decision.
Why Cost Segregation Pays Off in New Hampshire
New Hampshire's tax picture is unusual, and it directly shapes how much a cost segregation study is worth to you. On the personal side, there is no tax at all on wages, salaries, or, since the Interest and Dividends Tax was repealed for tax years beginning on or after January 1, 2025, on investment income. If your rental activity never rises to the level of a taxable business under state law, there is no state return to adjust bonus depreciation against.
The distinction that actually matters in New Hampshire is not LLC versus individual ownership, it is whether the rental counts as 'carrying on business activity' and clears the Business Profits Tax filing threshold. RSA 77-A:1 defines a taxable business organization broadly enough to include a proprietorship organized for gain or profit, so a sole owner who rents property directly can be just as much a BPT filer as an LLC once gross business income exceeds the threshold, $109,000 for taxable periods beginning on or after January 1, 2025. That threshold isn't set by one-off legislative action: RSA 77-A:6 requires the Department of Revenue Administration to adjust it automatically every two years for inflation, and it has stepped up from $92,000 to $103,000 to the current $109,000 through those biennial adjustments. A single high-value short-term rental can clear that gross-income threshold on its own. Once a return is a BPT filing, it owes BPT at 7.5% of taxable business profits, and New Hampshire's BPT statute, RSA 77-A:3-b, explicitly decouples from IRC Section 168(k) bonus depreciation: the filer must add back any bonus depreciation claimed on the federal return in the year it is taken, then recover that amount over time through regular, non-bonus MACRS depreciation deductions on the New Hampshire return. It is a timing difference, not a permanent disallowance. The deduction still shows up, just spread across the asset's normal recovery period at the state level instead of arriving all at once. A cost segregation study still adds real value in this scenario, because reclassifying components into 5-, 7-, and 15-year buckets accelerates the regular depreciation New Hampshire does allow, on top of whatever your CPA structures around the bonus add-back.
Property taxes are the other side of the ledger. New Hampshire funds itself heavily through property tax in the absence of a broad income tax, and recent Tax Foundation and WalletHub data put the state's average effective property tax rate on owner-occupied housing at roughly 1.5% to 1.7% of assessed value, consistently ranked among the top three to five highest in the country. That heavier carrying cost is exactly why front-loading depreciation deductions through a cost segregation study, federally and at the entity or filer level once any BPT add-back unwinds, matters more to a New Hampshire investor's cash flow than it might in a low-property-tax state.
How a Cost Segregation Study Works
Every rental property depreciates on a federally mandated straight-line schedule by default: 27.5 years for residential rental buildings, 39 years for commercial property, with the entire structure treated as one asset. A cost segregation study is an engineering-based analysis, typically involving blueprints, cost records, and a physical site inspection, that breaks that single asset into its actual components. Items like flooring, cabinetry, decorative and accent lighting, appliances, window treatments, parking areas, and specialized electrical or plumbing that supports a specific business use generally qualify for 5-, 7-, or 15-year depreciable lives instead of 27.5 or 39.
Under the One Big Beautiful Bill Act (OBBBA), signed into law in July 2025, qualifying property acquired and placed in service after January 19, 2025 is eligible for 100% bonus depreciation, meaning the entire reclassified 5-, 7-, and 15-year portion of a study can be deducted in the year the property is placed in service rather than depreciated gradually over those shorter lives. The acquisition-date test itself can be technical, turning on things like the date of a binding written contract rather than simply the closing date, so timing should be confirmed with your tax preparer. That single change is what turns a cost segregation study from a marginal timing adjustment into a large, immediate deduction.
A New Hampshire Cost Segregation Example
For illustration only — your results depend on your property and tax situation, and this is not a projection of actual savings.
Suppose an investor buys a $600,000 short-term rental cabin near Lake Winnipesaukee in Meredith, allocating $120,000 of the purchase price to land, which never depreciates. That leaves $480,000 of depreciable building basis. Under standard straight-line rules, a residential rental depreciates that basis over 27.5 years, or roughly $17,500 a year.
A cost segregation study might reclassify around 25-30% of the depreciable basis, say $130,000, into 5-, 7-, and 15-year components: flooring, cabinetry, dock and exterior lighting, furniture and appliances used in the rental, and site improvements like the driveway and landscaping. Under OBBBA's 100% bonus depreciation for qualifying property acquired and placed in service after January 19, 2025, that entire $130,000 could be deductible in the first year. If the rental's gross business income stays below New Hampshire's BPT filing threshold, that deduction offsets federal taxable income with no New Hampshire return to reconcile against. If gross business income clears the threshold, whether the property is titled to an LLC or held directly, the RSA 77-A:3-b add-back applies to the bonus portion at the state level, with recovery spread over subsequent years, a detail your CPA should model before closing.
Already Own Your New Hampshire Property? The Look-Back Study
Cost segregation isn't limited to the year you buy a property. If you've owned a New Hampshire rental for a year or more and never had a study done, a look-back study lets you claim the depreciation you missed without amending a single prior-year tax return. The mechanism is IRS Form 3115, Application for Change in Accounting Method, paired with a Section 481(a) adjustment that lets you recognize the entire cumulative catch-up, meaning all the depreciation you should have claimed in prior years had the study been done at purchase, in the current tax year. For an investor who has owned a Lakes Region cabin or a Seacoast rental for several years, that catch-up can be a meaningful lump-sum deduction landing in a single filing season, instead of a stream of small annual adjustments.
Who Should Consider Cost Segregation in New Hampshire
- Short-term rental and Airbnb hosts in New Hampshire's high-demand vacation markets, including the Lakes Region (Laconia, Meredith, Wolfeboro, and the shores of Lake Winnipesaukee), the White Mountains (North Conway, Conway, Jackson, and the ski corridor around Cannon and Bretton Woods), and the Seacoast (Portsmouth, Hampton, and Hampton Beach)
- Long-term rental and multifamily property owners across the state, from Manchester and Nashua to Concord and the Upper Valley
- Investors who recently purchased, built, or substantially renovated a rental property, where a study captures the largest first-year benefit
- High-income owners exploring the short-term rental material participation strategy, which can let STR losses offset W-2 or business income when the average guest stay is seven days or less and material participation tests are met
- Owners nearing or above New Hampshire's Business Profits Tax gross-income filing threshold, individually or through an LLC or partnership, where understanding the RSA 77-A:3-b bonus depreciation add-back changes the timing math