New Hampshire Property Tax Appeal Guide
New Hampshire municipalities assess property at market value, with an equalization ratio published annually to account for assessment lag.
100%
Statutory percentage
March 1 (Board of Tax and Land Appeals)
Verified July 2026 — confirm on your notice
N.H. Rev. Stat. § 76:16 (abatement applications)
Governing state code
How to File in New Hampshire
Review the assessed value against the town's equalization ratio.
File an abatement application with the local assessors by March 1.
Provide comparable sales or an appraisal supporting a lower value.
Await the selectmen's or assessors' decision (due by July 1).
Appeal to the Board of Tax and Land Appeals or Superior Court by September 1.
Deadlines and ratios vary by county and change over time — always confirm with your local assessor. This is general information, not legal advice.
Are you actually over-assessed in New Hampshire?
Check this property against recent comparable sales for $4.99. If the evidence says you have no case, you know that before you spend a filing deadline on it — and if it does, the same $4.99 is credited toward the full appeal packet.
A worked example in New Hampshire
Say the assessor values your home at $400,000, but comparable sales show it is really worth $350,000 — a $50,000 over-assessment. New Hampshire taxes the full market value, so the taxable amount drops by the same amount. At a typical effective rate of ~1.5%, that is about $750 back in your pocket every year until the value is corrected.
Illustration only. Your actual rate, exemptions, and savings depend on your county and taxing districts — run your own numbers.
Common grounds for a New Hampshire appeal
Over-market valuation. Comparable sales of similar nearby homes closed below the value the assessor placed on yours.
Errors in the property record. The county has the wrong square footage, bedroom or bathroom count, lot size, or condition on file.
Unequal (non-uniform) assessment. Comparable properties in your area are assessed for less than yours, regardless of market value.
Physical or external problems. Deferred maintenance, functional issues, or an external nuisance depress what a buyer would pay.
Overvaluation · Unequal assessment · Denial of exemption
Don’t overlook exemptions
An appeal lowers your value, but exemptions cut your taxable base directly — and both stack. Most owners qualify for a homestead exemption on their primary residence, and many states add relief for owners over 65, veterans, and people with disabilities. Confirm you are enrolled with your New Hampshire county assessor before filing — it is the fastest saving most people miss.
- Elderly Exemption $5,000–$150,000 assessed value
- Age 65+, income and asset limits (varies by municipality)
- Veteran's Tax Credit $50–$750 credit
- Qualifying veterans
- Disability Exemption Varies by municipality
- Totally and permanently disabled
Who hears a New Hampshire appeal
Your appeal is decided by Municipality → Board of Tax and Land Appeals or Superior Court — the value itself is set by the Municipal Assessor, which is who you are disagreeing with.
- 1
Local assessors (abatement)
- 2
BTLA
- 3
Superior Court
Each stage has its own deadline. Missing the first one usually closes the later ones for that tax year.
Key New Hampshire statutes
The sections a New Hampshire appeal is argued under. Quote one exactly as written — a paraphrased or renumbered citation is worse than none.
- RSA 75:1
- Assessment Standard
- RSA 76:16
- Abatement Application
- RSA 71-B:5
- Board of Tax and Land Appeals
- RSA 72:27-a
- Elderly Exemption
Official New Hampshire resources
These are state government sites. The form and portal you actually file through are published by your county assessor.
New Hampshire property tax appeal questions
- When is the deadline to appeal property taxes in New Hampshire?
- March 1 (Board of Tax and Land Appeals). Verified July 2026. Deadlines vary by county and change from year to year, so always confirm the date printed on your own assessment notice before you file.
- Who decides a property tax appeal in New Hampshire?
- Municipality → Board of Tax and Land Appeals or Superior Court hears it. The full path is: Local assessors (abatement), then BTLA, then Superior Court.
- What is the assessment ratio in New Hampshire?
- 100% of full and true value. That is the share of value your bill is calculated on, so lowering the assessed value lowers the bill proportionally.
- What grounds can I appeal on in New Hampshire?
- New Hampshire recognises these grounds: Overvaluation, Unequal assessment, Denial of exemption. Overvaluation is the most common — you show comparable sales that closed below your assessed value.
- What property tax exemptions does New Hampshire offer?
- Elderly Exemption — $5,000–$150,000 assessed value, for age 65+, income and asset limits (varies by municipality); Veteran's Tax Credit — $50–$750 credit, for qualifying veterans; Disability Exemption — Varies by municipality, for totally and permanently disabled. Exemptions reduce your taxable base directly and stack with an appeal, so check both.
- What is the average property tax rate in New Hampshire?
- About 1.5% of market value per year statewide. Your own rate depends on your county and its taxing districts, so treat this as a benchmark rather than your bill.
New Hampshire Tax Estimator
$0 / yr
Based on 100% ratio & avg. millage. Estimate only.
Generate your New Hampshire appeal packet
Check your property for $4.99 (credited), then get the full comparable-sales packet and AI appeal letter for a flat $29 — $19 at launch.