New Hampshire property tax appeals
Review the sourced process overview below, then get the New Hampshire DIY Appeal Kit with an evidence workbook, filing controls, official links, and an editable appeal letter in one PDF. No parcel-specific comps.
How a New Hampshire appeal actually works
Every statement below is cited to its primary source and shows the date we verified it. Where we could not confirm something from a primary source, we say so instead of guessing. Dataset last re-verified 2026-08-13.
Missed the main deadline? New Hampshire has 6 remedies most homeowners never hear about
County pages rarely surface these. Each one is a distinct legal route with its own clock.
Prorated assessment for building damaged by unintended fire or natural disaster
If a taxable building is damaged by unintended fire or natural disaster to the extent it cannot be used for its intended use, the assessing officials shall prorate the building assessment for the current tax year (days available for intended use ÷ days in tax year × building assessment). Total municipal reduction is capped at 1/2 of one percent of total property taxes committed for the year (RSA 76:21, V). Denial is appealable to the BTLA or Superior Court under RSA 76:16-a / RSA 76:17. Does not limit the separate RSA 76:16 abatement right.
When:
primary source · verified
Appeal from denial of exemption, deferral, or tax credit
Where selectmen or assessors refuse an exemption, deferral, or tax credit under the enumerated RSA 72 sections (elderly, blind, disabled, veterans' credits, solar/wind/woodheating, religious/charitable, etc.), the applicant may appeal in writing to the BTLA or the Superior Court, which may order the exemption/deferral/credit, or an abatement if a tax has been assessed. Underlying permanent application (DRA-provided form) is due by April 15 preceding the setting of the tax rate (RSA 72:33, I); late filing is excusable only for accident, mistake or misfortune and only before the local tax rate is approved (RSA 72:33, I-a).
When:
primary source · verified
Tax deferral for elderly (65+) and disabled homeowners
Resident owner 65+ (5 years' ownership) or Social Security Title II/XVI disabled (1 year ownership), living in the home, may be granted deferral of all or part of taxes due plus 5% annual interest where the tax liability causes undue hardship or possible loss of the property. Capped at 85% of equity value, computed using the EQUALIZATION RATIO: Assessed Value ÷ Equalization Ratio = Equalized Assessed Value; minus priority liens = equity value; × .85 = maximum deferrable. Requires mortgagee approval if mortgaged; municipality records notice of deferral at the registry within 30 days. Denial is appealable to Superior Court or BTLA, which may reverse/affirm/modify for error of law or if persuaded on the balance of probabilities that the decision is unreasonable (RSA 72:38-a, VI).
When:
primary source · verified
Discretionary abatement by selectmen/assessors, including prior years
Independent of any taxpayer application, 'Selectmen or assessors, for good cause shown, may abate any tax, INCLUDING PRIOR YEARS' TAXES, assessed by them or by their predecessors, including any portion of interest accrued on such tax.' This is a discretionary municipal power with no statutory taxpayer deadline attached — useful for clear factual/clerical errors that predate the current year, though it creates no appealable right if refused.
When:
primary source · verified
BTLA small claims procedure
The BTLA may establish, by rule, a small claims procedure to hear RSA 76:16-a property tax appeals as an alternative to full hearings, with modified procedural, hearing and decision requirements and a one-member quorum. AFTER filing the RSA 76:16-a appeal, the taxpayer has the option of electing small claims; the appeal is heard as a small claim UNLESS the municipality, within 30 days of the board's notice of the taxpayer's election, requests a full hearing. The board retains authority to require small claims to be heard by full hearing.
When:
primary source · verified
Refund / credit and interest on abated taxes; filing fee reimbursement
If taxes were paid and an abatement is ordered, the municipality must within 2 months of the clerk's date on the order refund the abated taxes plus interest at the RSA 76:17-a rate from the date paid to the date refunded (Tax 202.06(a)); if other taxes are outstanding the abatement is credited instead (RSA 76:17-d). Separately, where the BTLA grants an abatement because of an incorrect assessment 'due to a clerical error, or a plain and clear error of fact, and not of interpretation,' the municipality's treasurer must reimburse the taxpayer's $65 RSA 76:16-a filing fee.
When:
primary source · verified
What evidence wins in New Hampshire
NEW HAMPSHIRE IS AN EQUALIZATION-RATIO STATE — this is the single most commercially important fact. Winning is NOT simply 'assessment > market value.' The statutory test compares the assessment to the municipality's town-wide LEVEL of assessment (the median ratio). Two equivalent formulations, both official: (A) BTLA appeal-form instructions — divide the assessment by the municipality's equalization ratio to get the 'equalized assessment,' then show the equalized assessment exceeds the property's April 1 market value. (B) RSA 76:16-f (NEW, effective April 1, 2025) — 'If an abatement is granted under RSA 76:16, RSA 76:16-a, or RSA 76:17, with a determination of market value, the market value of the property for a given tax year shall be equalized by multiplying the market value of the property by the PREVIOUS tax year's median ratio as determined by the department of revenue administration under RSA 21-J:3. The market value of the property shall be equalized at 100 percent in any tax year for which the municipality conducts a full reassessment in accordance with RSA 75:1 and RSA 75:8-a.' PRACTICAL CONSEQUENCE: where the ratio is below 1.00, a homeowner whose assessment merely equals market value has NO case; where the ratio is above 1.00, a homeowner assessed at or slightly below market value MAY still have a case. NH Admin. Rule Tax 203.03(e) requires the taxpayer to present material on: (1) physical data (incorrect description or measurement); (2) market data — value on the April 1 assessment date supported by comparable SALES or a professional opinion of value; and/or (3) assessment data — 'a showing that the property's assessment, when compared to its market value, exceeds the general level of assessment in the municipality.' The BTLA appeal form contains a dedicated Section H for listing comparable PROPERTIES (assessment comps) and Section G for the taxpayer's market value opinion; the municipal abatement application likewise requires 'the comparables relied upon by the taxpayer' (Tax 203.02(b)(4)). If the taxpayer intends to rely on an appraisal, that must be stated in Section F and the appraisal provided with the appeal if available. Note also RSA 72:38-a's statutory formula, which uses the same construct: Assessed Value ÷ Equalization Ratio = Equalized Assessed Value.
primary source · verified 2026-08-12
The appeal ladder, in New Hampshire's own terms
- 1
Municipal selectmen or assessors (local board of assessors) — RSA 76:16 abatement application
Deadline: March 1 following the date of notice of tax. EXCEPTION: in municipalities whose date of notice of tax falls AFTER December 31, the deadline is 2 months after the date of notice of tax (RSA 76:16-d, II). Statutory text: 'may, by March 1, following the date of notice of tax under RSA 76:1-a, and not afterwards, apply in writing ... to the selectmen or assessors for an abatement of the tax.'
Clock starts: 'Date of notice of tax' = the date the BTLA determines to be the last mailing date of the FINAL tax bill for the tax year (RSA 76:1-a, II). For annual billers it is the mailing of the annual bill; for semi-annual billers (RSA 76:15-a) it is the mailing of the SECOND bill; for quarterly billers (RSA 76:15-aa) it is the last mailing date of the quarterly bill due January 2. Because nearly all NH municipalities mail the final bill on or before Dec. 31, the operative deadline is almost always March 1.
RSA 76:16, I(b); RSA 76:1-a; RSA 76:16-d, II · primary source · verified 2026-08-12
Form: No printed form number. The form is identified by title only and is prescribed by the Board of Tax and Land Appeals under RSA 76:16, III and Tax 203.02(b). — Taxpayer's RSA 76:16 Abatement Application to Municipality official form
primary source · verified 2026-08-12
Fee: $0 statutorily required; the municipality MAY charge a fee limited to covering the cost of the form (RSA 76:16, I(b)). Example: City of Manchester states 'There is no filing fee required when applying for an abatement with the City of Manchester.' (set_locally)
RSA 76:16, I(b) · primary source · verified 2026-08-12
- 2
NH Board of Tax and Land Appeals (BTLA) — ELECTIVE ALTERNATIVE #1 (mutually exclusive with Superior Court)
Deadline: On or before September 1 following the date of notice of tax, and NOT EARLIER than (a) receipt of the municipality's decision on the abatement application, or (b) July 1 following the notice of tax if the municipality has not responded. EXCEPTION: where the date of notice of tax is after December 31, the appeal deadline is 8 months after the date of notice of tax (and no earlier than the municipal decision or 6 months after notice of tax). Statutory text: 'The appeal shall be filed on or before September 1 after the date of notice of tax under RSA 76:1-a, and not afterwards.'
Clock starts: Date of notice of tax (last mailing date of the final tax bill, RSA 76:1-a, II), following municipal denial or deemed denial. Municipal failure to respond by July 1 constitutes denial (RSA 76:16, II). Tax 203.02(f): the municipality's failure to respond does NOT extend the appeal deadline.
RSA 76:16-a, I; RSA 76:16-d, II; RSA 76:16, II · primary source · verified 2026-08-12
Form: No printed form number. Identified by title; prescribed by BTLA under Tax 203.03(b). — Taxpayer's RSA 76:16-a Property Tax Appeal to the Board of Tax and Land Appeals official form
primary source · verified 2026-08-12
Fee: $65.00, nonrefundable, by check or money order payable to 'Treasurer, State of New Hampshire' (no credit cards). Mail or hand-deliver to Board of Tax and Land Appeals, 107 Pleasant Street, Johnson Hall, Concord, NH 03301. Reimbursable by the municipality under RSA 76:17-b if the BTLA grants an abatement due to a clerical error or a plain and clear error of fact (not of interpretation). (statutory)
RSA 76:16-a, I (fee amount); RSA 76:17-b (reimbursement); NH Admin. Rule Tax 501.01 · primary source · verified 2026-08-12
- 2
New Hampshire Superior Court (county of the property) — ELECTIVE ALTERNATIVE #2 (mutually exclusive with BTLA)
Deadline: On or before September 1 following the date of notice of tax, and not afterwards. Statutory text: 'any person aggrieved ... may, IN LIEU OF appealing pursuant to RSA 76:16-a, apply by petition to the superior court in the county ... The appeal shall be filed on or before September 1 following the date of notice of tax under RSA 76:1-a, and not afterwards.' EXCEPTION: where the date of notice of tax is after December 31, the deadline is 8 months after the date of notice of tax (RSA 76:16-d, II expressly covers RSA 76:17).
Clock starts: Date of notice of tax (last mailing date of the final tax bill, RSA 76:1-a, II), after municipal denial or deemed denial (failure to act by July 1).
RSA 76:17; RSA 76:16-d, II · primary source · verified 2026-08-12
Not confirmed from a primary source: RSA 76:17 requires an 'application by petition to the superior court'; no tax-abatement-specific statewide court form was located. courts.nh.gov returned empty bodies for every page and PDF fetched (JS-rendered / bot-protected), so no official form number or title could be read directly. A general Superior Court civil petition/complaint is the likely vehicle but this was NOT confirmed from a primary source. Check the official page before relying on this.Fee: Approximately $325.00 original entry fee for a civil action, plus a $10.00 mediation and arbitration fund surcharge added to each civil filing fee (Superior Court Fee Schedule effective 07/01/2025). NOT DIRECTLY VERIFIED — see gap_reason. (statutory)
NH Superior Court Rule 201 (Fees); RSA 490:26-a · primary source · verified 2026-08-12
- 3
New Hampshire Supreme Court (from BTLA only; questions of law)
Deadline: Two-step: (1) motion for rehearing must be filed with the BTLA within 30 days after the order or decision (RSA 541:3); (2) appeal by petition to the Supreme Court within 30 days after the rehearing application is denied, or within 30 days after the decision on rehearing if granted (RSA 541:6). Only one appeal is allowed per person on each parcel until a reassessment has been made (RSA 71-B:12).
Clock starts: Clerk's date of the BTLA order/decision (for rehearing); date of denial of, or decision on, the rehearing motion (for the Supreme Court petition).
RSA 71-B:12; RSA 76:16-a, V; RSA 541:3; RSA 541:6 · primary source · verified 2026-08-12
Not confirmed from a primary source: courts.nh.gov pages returned empty response bodies; the NH Supreme Court appeal document (Rule 10 mandatory appeal / RSA 541 petition) form number and title could not be read from a primary source. Check the official page before relying on this.Not confirmed from a primary source: courts.nh.gov returned empty response bodies on all fetch attempts; the Supreme Court entry fee amount could not be confirmed from a primary source and is therefore left null rather than guessed. Check the official page before relying on this.
Who has to prove what
The taxpayer must prove 'good cause' for abatement under RSA 76:16. Per the BTLA's official appeal-form instructions: 'The taxpayer has the burden of proof to show the assessment was disproportionate. To carry this burden the taxpayer must show: a) what the property was worth (market value) on the assessment date; and b) the property's equalized assessment exceeded the property's market value.' Good cause is 'generally established by showing an error in the assessment calculation or a disproportionate assessment,' and may alternatively be established by 'poverty and inability to pay the tax' (Ansara v. City of Nashua, 118 N.H. 879 (1978)). The BTLA hears the matter DE NOVO (RSA 71-B:11).
primary source · verified 2026-08-12
When values are set
TWO OVERLAPPING DUTIES. (1) ANNUAL adjustment — RSA 75:8, I: 'Annually, and in accordance with state assessing guidelines, the assessors and selectmen shall adjust assessments to reflect changes and to correct any errors in existing appraisals so that all assessments are reasonably proportional within that municipality.' RSA 75:8, II lists triggers for considering adjustment (material physical change, change of ownership, zoning changes, exemption/credit/abatement changes, subdivision/boundary/merger, other changes affecting value). (2) FULL REVALUATION at least every FIFTH year — RSA 75:8-a ('Five-Year Valuation'): 'The assessors and/or selectmen shall reappraise all real estate within the municipality so that the assessments are at full and true value at least as often as every fifth year,' the clock beginning with the later of (I) the first year the municipality's assessments were reviewed by the DRA commissioner under RSA 21-J:3, XXVI and found in accordance with RSA 75:1, or (II) the municipality's last full DRA-monitored revaluation under RSA 21-J:11, II effective on or after April 1, 1999. ASSESSMENT DATE / TAX YEAR: 'The property tax year shall be April 1 to March 31 and all property taxes shall be assessed on the inventory taken in April of that year' (RSA 76:2) — value is judged as of APRIL 1 of the appeal year. The 5-year interval is a floor, not a schedule: revaluation years differ municipality by municipality, and per RSA 76:16-f the equalization factor is 100% (i.e., ratio = 1.00) in any tax year the municipality conducts a full reassessment under RSA 75:1 and RSA 75:8-a.
primary source · verified 2026-08-12
How counties differ
NH is a TOWN/CITY state, not a county-assessment state — assessment and the first-level abatement are handled by municipal selectmen or assessors, not counties. The county matters only for the Superior Court alternative (petition goes to the Superior Court in the county where the property lies; e.g., Manchester property → Hillsborough County Superior Court, Northern District, 300 Chestnut Street, Manchester, NH 03101). The DEADLINE ITSELF (March 1 / September 1) is statewide statutory and does NOT vary by municipality. What DOES vary municipality-by-municipality is the TRIGGER — the 'date of notice of tax,' i.e., which bill is the final bill (RSA 76:1-a, II): annual billers (mailing of the annual bill), semi-annual billers under RSA 76:15-a (mailing of the SECOND bill), optional-fiscal-year towns under RSA 31:94-a (first bill, if it establishes total liability and says so), and quarterly billers under RSA 76:15-aa (last mailing of the quarterly bill due January 2). Verified municipal examples: (1) MANCHESTER — 'A written application is filed with the City of Manchester Board of Assessors, but only after receipt of the final tax bill ... your appeal must be received by the Board of Assessors (or postmarked) on or before March 1st' (https://www.manchesternh.gov/Departments/Assessors/Abatements-and-Appeals). (2) NASHUA — abatement applications accepted only after issuance of the final (December) bill, 2025 tax year applications due March 1, 2026 (https://www.nashuanh.gov/169/Filing-an-Appeal). (3) CONCORD — quarterly biller; abatement filed after receipt of the final 2025 bill, deadline March 1, 2026 (https://www.concordnh.gov/292/Abatements-How-to-File). NOTE the Manchester page cites the election-of-remedies waiver as 'RSA 76-B:11' — that is a typographical error on the city's site; the correct citation is RSA 71-B:11. Unincorporated places follow RSA 81:5 for filing deadlines (per BTLA). Nashua and Concord examples were read via search-engine extraction of the official municipal pages rather than direct page fetch.
New Hampshire appeal deadline
Deadlines varyNew Hampshire deadlines are set locally.
The deadline is almost always printed on the assessment notice your local assessor mails you. Use that date, it is the one that counts.
Are you missing a New Hampshire exemption?
Exemptions cut your bill before any appeal even starts, and most homeowners never claim all the ones they qualify for. Answer four questions:
Is your New Hampshire home over-assessed?
The whole appeal hinges on one comparison: your assessed value (from your tax notice) versus your home's market value (what it would sell for today). Put both in:
How to find your home's real market value (free) →
- Pull free estimates. Look up your address on Zillow (“Zestimate”) and Redfin (“Redfin Estimate”). Average them, algorithms run high or low, so two beats one.
- Find 3-5 real comparable sales. Same neighborhood, similar size, beds/baths, age, and condition, sold in the last 6-12 months. Recent sales (not listings) are the strongest evidence a board will accept.
- Adjust for differences. Knock value off comps that are bigger or renovated; add for ones that are smaller or dated, so you're comparing like-for-like.
- Compare to your assessment. If your assessed value sits clearly above that adjusted market figure, you have grounds to appeal.
One catch: some states assess at a fraction of market value (an “assessment ratio”). If your notice shows a ratio or an “equalized” value, compare your implied full value to market, not the raw assessed number.
How property tax appeals generally work
Most states follow the same basic path: your local assessor mails an assessment notice with a value and a deadline; you file an appeal (often called a protest, grievance, or petition) before that deadline; you present comparable sales of similar homes; and a local board reviews the evidence and can lower your value.
The exact form, deadline, and board can vary by county. Use the current assessment notice and the official sources linked above to confirm the controlling local requirements. The paid kit organizes that verification, the evidence, the filing steps, and your editable letter in one place.
Want to see the depth we build per state? Take a look at our Texas, Florida, and Georgia guides.