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Updated 2025 Tax Year

Coos County
Property Tax Guide

Everything you need to know about property taxes in Coos County, NH. Rates, due dates, exemptions, and how it affects your monthly payment.

10 Official Sources
8 min read
Quick Facts
Tax Rate
15-25 mills ($15-$25 per $1,000 assessed value), varies by municipality within county
Exemptions
6+ Available
Section 1

How Property Tax Works

Property taxes in Coos County, New Hampshire, serve as the primary funding mechanism for essential local services including schools, municipal services, county operations, and infrastructure maintenance. The county operates under New Hampshire's decentralized property tax system, where individual towns and cities set their own tax rates based on local budget needs and state education funding requirements.

Coos County property tax rates typically range from approximately 15 to 25 mills (or $15 to $25 per $1,000 of assessed value), though this varies significantly by municipality within the county. Each town's rate consists of multiple components including local municipal taxes, school district taxes, county taxes, and state education taxes. Property owners should note that actual tax rates can vary considerably even within Coos County due to different municipal budgets, school district boundaries, and special taxing districts such as fire districts or village districts.

Property assessments in Coos County are conducted at the municipal level, with most towns reassessing properties every 5-10 years or conducting statistical updates to maintain current market values. Unlike some states, New Hampshire does not impose assessment caps, meaning assessed values can increase to reflect current market conditions.

Section 2

What Makes Up Your Tax Bill

ComponentApproximate Rate RangeDescription
Municipal Tax$4.00 - $8.00 per $1,000Funds local government services, public works, police, fire
Local School District$8.00 - $14.00 per $1,000Local education funding based on district budgets
State Education Tax$2.16 per $1,000Statewide education tax set by state legislature
County Tax$1.50 - $2.50 per $1,000County services, courthouse, corrections, social services
Special Districts$0.50 - $3.00 per $1,000Fire districts, water districts, village districts (where applicable)

Total Estimated Range: $16.16 - $29.66 per $1,000 of assessed value

Note: These rates are estimates for FY 2025-2026 and vary significantly by municipality within Coos County. The 2025 rates are finalized in June 2025. Contact your local tax assessor for exact rates applicable to your property's location and any special district assessments.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Coos County, property taxes are due in two installments:

Pro tip: If you pay through mortgage escrow, your lender splits these payments across your monthly mortgage. If you pay directly, set calendar reminders to avoid late penalties.
Section 4

Supplemental Tax Bills

Supplemental taxes in Coos County are additional property tax bills issued when there are changes to property ownership, improvements, or corrections to assessments during the current tax year. The most common triggers include new construction completion, major renovations that increase property value, subdivision of land, or discovery of previously unassessed improvements.

When a supplemental tax is issued, it covers the period from when the change became effective through the end of the current tax year. For example, if new construction is completed and receives a certificate of occupancy in March, the supplemental tax would cover March through the end of the tax year. The calculation uses the current year's tax rate applied to the increase in assessed value.

Example: A property owner completes a $100,000 home addition in March 2025. If the local tax rate is $22.00 per $1,000 of assessed value, the supplemental tax would be approximately $2,200 prorated for 10 months (March through December), resulting in a supplemental bill of about $1,833. This supplemental tax stays with the property and becomes part of any property transfer documentation.

Example Calculation

Example 1: $300,000 Property

  • Assessed Value: $300,000
  • Veteran's Tax Credit Applied: -$500 (requires application)
  • Net Taxable Value: $299,500
  • Tax Rate: $20.00 per $1,000
  • Annual Tax: $5,990
  • Monthly Escrow: $499

Example 2: $600,000 Property

  • Assessed Value: $600,000
  • Elderly Exemption Applied: -$50,000 (reduces taxable assessment, requires application)
  • Net Taxable Value: $550,000
  • Tax Rate: $22.00 per $1,000
  • Annual Tax: $12,100
  • Monthly Escrow: $1,008

Example 3: $1,000,000 Property

  • Assessed Value: $1,000,000
  • No Credits Applied: $0
  • Net Taxable Value: $1,000,000
  • Tax Rate: $24.00 per $1,000
  • Annual Tax: $24,000
  • Monthly Escrow: $2,000

Note: All tax credits and exemptions require formal application with your local tax assessor and are not automatically applied. Rates shown are estimates and vary by specific location within Coos County.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Coos County require property tax escrow accounts, where monthly payments include principal, interest, taxes, and insurance (PITI). Lenders collect approximately 1/12th of the annual property tax bill each month, plus a cushion amount typically equal to 2-3 months of tax payments to ensure sufficient funds for tax payments.

Property tax payments in Coos County are typically made semi-annually, with the first installment due February 15th and the final bill due around November 1st. Lenders monitor these due dates and make payments directly to the municipality on behalf of homeowners. When tax bills are issued, lenders receive copies and adjust escrow payments if necessary to account for rate changes or assessment updates.

Property owners with escrow accounts should verify that their lender has received current tax bills and made timely payments. The mortgage servicer is required to provide an annual escrow analysis showing all deposits, payments, and any adjustments to monthly escrow amounts. If escrow payments are insufficient due to tax increases, lenders may offer payment plans to make up shortfalls rather than requiring a lump sum payment.

How HonestCasa Helps
  • Understand whether your escrow is set correctly
  • See how rising taxes will change your monthly payment
  • Plan ahead instead of being surprised by "shortage" letters
Section 6

Frequently Asked Questions

Q: When are property taxes due in Coos County for FY 2025-2026? A: The first installment is due February 15, 2026. If February 15th falls on a weekend or holiday, payment is due the next business day. The final tax bill is typically due around November 1st, though exact dates vary by municipality.

Q: What tax credits are available and do I need to apply? A: Common tax credits include the Veteran's Tax Credit, Elderly Exemption, Blind Exemption, and Disabled Exemption. All credits require formal application with your local tax assessor and are not automatically applied. Applications typically have annual deadlines in April.

Q: How does the Homestead Exemption work in New Hampshire? A: New Hampshire does not currently have a traditional homestead exemption. However, some elderly and disabled persons may qualify for property tax relief that caps assessment increases. This requires annual application and income qualification with your local assessor.

Q: How often are properties reassessed in Coos County? A: Assessment schedules vary by municipality within Coos County. Most towns conduct full revaluations every 5-10 years, with some performing statistical updates in between. Contact your local tax assessor for your town's specific assessment cycle.

Q: What are the penalties for late property tax payments? A: Interest charges typically begin accruing after the due date at a rate set by state law (currently 18% annually). Some municipalities may charge additional penalties. Unpaid taxes can result in tax lien procedures.

Q: Can I pay property taxes online? A: Many Coos County municipalities offer online payment options through their websites or third-party processors. There is typically a convenience fee of 2.49% for credit/debit card transactions or a flat $1.50 charge depending on the payment method and amount.

Q: What if I disagree with my property assessment? A: Property owners can appeal assessments by filing an abatement application with the local Board of Selectmen or Assessors, typically by March 1st following the tax year. If unsuccessful, appeals can be made to the Board of Tax and Land Appeals.

Q: Do special districts affect my tax rate? A: Yes, properties located in fire districts, village districts, water districts, or other special taxing districts will have additional taxes beyond the basic municipal, school, and county taxes. These can add $0.50 to $3.00 per $1,000 of assessed value.

Q: Are there property tax relief programs for seniors or low-income residents? A: New Hampshire offers an elderly and disabled property tax deferral program and low and moderate income homeowner property tax relief. Both programs have income and asset limitations and require annual application through the state Department of Revenue Administration.

Q: What should I do if I notice property fraud or receive suspicious tax documents? A: Coos County has experienced increased property fraud activities. Contact your local tax assessor immediately if you receive unexpected tax bills, notices of ownership changes you didn't make, or any suspicious correspondence regarding your property taxes.

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