How to Appeal Your Property Tax in New Hampshire
New Hampshire homeowners can appeal their property tax assessment if they believe it's too high. This guide covers the 2026 appeal deadline, required evidence, and step-by-step process.
2026 Appeal Deadline: March 1 following notice
Don't miss your window. Missing the deadline means waiting another full year.
How New Hampshire Assesses Property
New Hampshire assesses residential property at 100% of market value.
New Hampshire assesses property at 100% of full and true value (market value).
The Appeal Process
Appeals are heard by the Board of Tax and Land Appeals. An informal review is available before filing a formal appeal.
Board of Selectmen / Assessors (Abatement)
Board of Tax and Land Appeals or Superior Court
New Hampshire Appeal Deadline
What Overassessment Costs New Hampshire Homeowners
The median home in New Hampshire is worth $339,000. If your assessment is just 10% too high, you may be overpaying:
~$709/year
Effective tax rate: 2.09% · Median value: $339,000
Check Your New Hampshire Assessment
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New Hampshire Counties
Guides & Resources
Property Tax Appeal Resources
Best Appeal Services Compared
7 companies compared — pricing, coverage, and pros/cons for 2026.
2026 Appeal Deadlines
Every state's deadline, filing method, and what happens if you miss it.
Assessment Ratios by State
Every state's assessment percentage — from 4% to 100% — with worked examples.
9 Ways to Lower Your Property Taxes
From homestead exemptions to formal appeals — every method that works.
Savings Calculator
Check if you're overassessed — enter your assessed value to see potential savings.