Grafton County is part of New Hampshire's distinctive 4-component property tax system. NH has NO state income tax + NO state sales tax — property tax does virtually all state-and-local revenue work. The total mill rate sums 4 components: municipal + county + local school + Statewide Education Property Tax (SWEPT, $1.030/$1,000 for 2026). Real property is assessed at 100% of FMV. Grafton's representative effective rate is ~1.55%. NH ranks top 5 US for effective rate (~1.93% statewide median).
How the bill is built
Each town's assessor determines FMV on a 5-year reassessment cycle (RSA 75:8-a). NH assesses at 100% of FMV. Tax = FMV × total mill rate / 1,000. Grafton's representative total mill rate is ~16 mills (~1.55% effective). NH bills issue in 2 halves: first bill (~July) is estimated at half of prior-year tax; second bill (~December) "trues up" at the final rate set by the DRA. Most towns due July 1 + December 1.
2026 Grafton County rate breakdown (total mill rate per $1,000 of AV (100% FMV; muni + county + school + SWEPT), North Haverhill district)
| Taxing entity | Rate |
|---|---|
| Combined municipal + county + local school + SWEPT (Hanover ~14.65 mills + Dartmouth tax-exempt impact, Lebanon ~26 mills, Plymouth ~25 mills × 100% AR; county avg ~1.55%) | 15.5000 |
| Combined total | 15.5000 |
As of April 27, 2026 · From Grafton County + Town Assessors (NH towns assess; Dartmouth College at Hanover).
Deductions and exemptions for 2026
New Hampshire homeowner property tax relief operates through several mechanisms — but with a critical caveat: relief is town-administered, not state-administered. NH towns/cities (234 total) are the assessing entity. State law sets minimum exemptions and credits; towns may (and most do) increase them substantially. The primary mechanisms are: (1) the Town-Option Elderly Exemption (RSA 72:39-a/b, age-tier AV reductions), (2) the Veterans' Tax Credits (RSA 72:28 standard, RSA 72:35 disabled — DIRECT tax credits, not AV reductions), (3) the SAH/SHA Specially Adapted Housing Exemption (RSA 72:36-a — narrow full exemption), and (4) the Current Use Assessment (RSA 79-A — for qualifying farm/forest land at use value rather than market value).
Town-Option Elderly Exemption (RSA 72:39-a/b)
Every NH town/city sets its own age-tier AV reduction amounts and income/asset eligibility limits. Typical structure: 3 age tiers (65-74, 75-79, 80+) with progressively larger AV reductions; income limit typically $40,000-$60,000 single or $50,000-$80,000 married; asset limit typically $100,000-$200,000 (excluding home). Affluent towns offer substantially larger exemptions: Hanover offers $200K AV reduction for 80+ (saves ~$3,000+/year at Hanover's mill rate), Concord offers tiered $50K-$130K, Manchester offers $75K-$135K. Other towns offer modest $25K-$50K reductions. Apply with town assessor between January 1 and April 15. Annual recertification required for income-tested programs.
Veterans' Tax Credits (RSA 72:28 + RSA 72:35)
Critical distinction: NH credits are DIRECT TAX CREDITS (subtracted from the bill), not AV reductions. Structure: (1) Standard Veterans' Tax Credit (RSA 72:28) — wartime vets, $50 state minimum, towns adopt $51-$750 (most towns at $500-$750). (2) All Veterans' Tax Credit (RSA 72:28-b) — all 90-day vets, similar $50-$750 range; cannot stack with RSA 72:28. (3) Total/Permanently Disabled Service-Connected Vet Credit (RSA 72:35) — 100% P&T vets, $700 state minimum, towns adopt up to $4,000-$5,000 (Londonderry adopted $5,000 starting 2026 tax year, several towns at $4,000). (4) Surviving Spouse of KIA (RSA 72:29-a) — $700-$2,000 town option. NH does NOT join the categorical full-exemption states — treatment is town-by-town with credit amounts varying $700-$5,000.
SAH/SHA Specially Adapted Housing Exemption (RSA 72:36-a)
FULL property tax exemption for 100% P&T disabled vets with VA-funded specially adapted homes (Specially Adapted Housing or Special Home Adaptation grants). Very narrow applicability — only qualifying severely disabled vets with VA-adapted homes. NOT a general full exemption.
Current Use Assessment (RSA 79-A)
Qualifying farm, forest, and unimproved land may be assessed at "current use" value (productive value) rather than market value. Substantial reduction — a 20-acre wooded parcel with $200K market value might be assessed at $3K under current use. Requires application + 10-acre minimum (mostly). Land-use change tax applies if removed from current use (10% of full market value).
Appealing your assessment
New Hampshire property tax appeals follow a 3-tier process. Level 1: Town Board of Selectmen / Town Assessor. File written appeal by March 1 (or within 60 days of bill mailing if later). Present comparable sales, recent appraisals, or condition documentation. Most appeals are resolved informally with the town. Level 2: NH Board of Tax and Land Appeals (BTLA) OR Superior Court. If unresolved with town, appeal to BTLA or Superior Court by September 1. BTLA is faster and cheaper (no filing fee). Level 3: NH Supreme Court. Most appeals are resolved at Level 1 or 2. Tax cycle: bills issued in 2 halves (first ~July, second ~December). Important: filing the BTLA appeal during the 5-year reassessment year is the most efficient path — pre-reassessment AVs cannot be challenged.