New Hampshire has no state income tax, and as of 2025 it repealed its last remaining tax on investment income (the interest and dividends tax), so it now sits in the same clean-math category as Florida, Texas, Tennessee, and Nevada. That is rare in New England, where Massachusetts, Maine, and Vermont all tax income. For an investor holding a New Hampshire rental, the federal cost segregation deduction is the entire deduction: no state add-back, no separate state depreciation schedule, no state-level recapture at sale. See your New Hampshire tax savings →
- IRS Audit Techniques Guide methodology
- 40+ page CPA-ready report
- Delivered in about an hour
- Audit support included
Most New Hampshire investment activity concentrates in a few distinct markets. The Seacoast (Portsmouth, New Castle, Rye, and Hampton) pairs a historic downtown and working waterfront with strong year-round tourism and Boston-area buyers drawn by the lifestyle and the 0% tax posture. The Lakes Region around Lake Winnipesaukee and the White Mountains around North Conway and Lincoln support furnished, amenity-heavy vacation rentals whose short-life components (appliances, furnishings, hot tubs, decking, and site work) drive a meaningful share of basis into 5- and 15-year classes. Manchester and Nashua add a steady long-term single-family and small-multifamily rental base fed by southern New Hampshire’s job growth and Massachusetts-border migration.
That mix matters because cost segregation captures a percentage of depreciable basis. Furnished Seacoast and mountain vacation rentals tend to carry a higher short-life share than a bare long-term rental, while Manchester and Nashua long-term rentals still routinely move roughly a quarter of basis into accelerated classes. Whether the resulting first-year loss offsets other income depends on the facts: short-term rentals with the right average stay and material participation can be non-passive, while longer-term rentals follow the passive-activity rules and shelter rental income or carry forward. Your CPA decides how and when the deduction is applied.
Cost Seg Smart runs the same engineering-method study on a New Hampshire rental that it runs anywhere else — closing documents, depreciable basis, and property facts in; a 40+ page, IRS ATG-aligned report out, delivered in about an hour and backed by the CPA-Ready Guarantee.
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CPA use note: These figures estimate the size of the depreciation deduction. Whether the loss is usable in the current year depends on passive-activity rules, STR material participation, REPS status, entity structure, depreciable basis, and state conformity. Your CPA decides how and when it is applied. Specialty and site components (equipment, casework, docks, pools, arenas, tenant improvements, and similar) are only classified when you own them and they are included in the depreciable basis being studied.
How should New Hampshire investors choose a cost segregation provider?
For a New Hampshire investor buying a property in the $690,000 range, the choice of provider is a major controllable variable in the return. The IRS Audit Techniques Guide sets the quality characteristics an engineering-based study should meet — industry-standard construction cost data, MACRS classification, and component-level documentation — but it does not make every provider's work identical; rigor, cost, and turnaround still vary.
Traditional engineering studies often run several thousand dollars and can take several weeks, because they include on-site inspections, sales discovery calls, and scheduling overhead. The IRS Cost Segregation Audit Techniques Guide does not prescribe an on-site inspection as a standalone requirement; it sets out the quality characteristics of an engineering-based study — component-level classification, a documented and supportable cost derivation, and a clear audit trail — and describes how a physical inspection can contribute to meeting them.
Modern automated providers (such as Cost Seg Smart) deliver an engineering-based, IRS ATG-aligned study using property records, documents, photos, and recognized construction-cost data, typically from $495 and often the same day. For a New Hampshire investor at a high combined bracket, that cost and speed difference is meaningful. The CPA-Ready Guarantee (full refund if the report can't be used by your CPA) plus the 60-day money-back policy makes the decision essentially risk-free on the report itself.
The automated path is best-fit for owners who can provide closing documents and property photos online (no in-person visit required) and want the report in time to file the current year's return rather than the next one.
All Cost Seg Smart studies include the CPA-Ready Guarantee (full refund if your CPA can't use the report) plus a 60-day money-back policy. Straightforward residential studies are often delivered the same day and completed remotely; larger or more complex commercial studies take longer and may include an on-site observation.