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Updated 2025 Tax Year

Somerset County
Property Tax Guide

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

10 Official Sources
8 min read
Quick Facts
Tax Rate
0.2822% county rate (total effective rate 2.0-2.8% including municipal and school districts)
Exemptions
5+ Available
Section 1

How Property Tax Works

Somerset County's property tax system operates on an annual assessment basis, funding essential services including schools, municipal operations, county services, and special districts. The county-wide tax rate for FY 2025 is $2.822 per $100 of assessed value (0.2822%), representing a 2.29% decrease from the previous year's rate of $2.888 per $100. This rate reflects Somerset County's portion of property taxes, but homeowners pay additional municipal and school district taxes that vary significantly by location.

Your actual property tax rate depends on your specific municipality and school district within Somerset County, as each has its own tax levy. The total effective tax rate typically ranges from 2.0% to 2.8% of assessed value when combining county, municipal, school, and special district taxes. Somerset County assesses properties at 100% of market value, with reassessments conducted periodically to maintain current valuations. Property owners should note that various tax credits are available but require annual application and are not automatically applied to your tax bill.

Section 2

What Makes Up Your Tax Bill

ComponentRate (per $100)Description
Somerset County Levy$0.2822County operations, services, debt service
Municipal TaxVariesCity/township services, varies by municipality
School District TaxVariesLocal school funding, varies by district
Fire District TaxVariesFire protection services where applicable
Library TaxVariesPublic library funding where applicable
Special AssessmentsVariesImprovement districts, utilities, bonds

Total Effective Rate Range: $2.00 - $2.80 per $100 of assessed value

Note: These rates apply to the FY 2025 tax year. Municipal and school district rates vary significantly across Somerset County's 21 municipalities. Contact your local tax assessor for your specific total rate, as special taxing districts within municipalities can create additional variations in your final tax bill.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Somerset 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 Somerset County are additional tax bills issued when property ownership changes or new construction is completed mid-tax year. These supplemental assessments ensure that property taxes are properly allocated based on current ownership and property improvements. When you purchase property or complete construction, the county assessor determines if the assessed value has changed from the original annual assessment.

Supplemental taxes are calculated by taking the difference between the new assessed value and the original assessed value, then multiplying by the applicable tax rate for the remaining months in the tax year. For example, if you purchase a home in July that was previously assessed at $400,000 but now has a market value of $500,000, you would owe supplemental taxes on the $100,000 difference for the remaining 9 months of the tax year. The supplemental bill typically arrives 30-60 days after the triggering event and has its own due date separate from regular property tax installments.

Example Calculation

Example 1: $300,000 Home

  • Assessed Value: $300,000
  • Senior Freeze Credit Applied: -$500 (requires application)
  • Net Taxable Value: $299,500
  • Tax Rate: 2.40% (example total rate)
  • Annual Tax: $7,188
  • Monthly Escrow: $599

Example 2: $600,000 Home

  • Assessed Value: $600,000
  • Homestead Benefit Credit: -$1,200 (requires application)
  • Net Taxable Value: $598,800
  • Tax Rate: 2.55% (example total rate)
  • Annual Tax: $15,270
  • Monthly Escrow: $1,273

Example 3: $1,000,000 Home

  • Assessed Value: $1,000,000
  • Disabled Veteran Credit: -$3,000 (requires application and qualification)
  • Net Taxable Value: $997,000
  • Tax Rate: 2.65% (example total rate)
  • Annual Tax: $26,421
  • Monthly Escrow: $2,202

Note: Tax credits shown require annual application. Rates vary by municipality and school district. Contact your local tax assessor for exact rates and available credits.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Somerset County require property tax escrow accounts, collecting monthly payments to cover your annual tax obligation. Lenders typically collect 1/12 of your estimated annual property tax bill plus a cushion (usually 2 months) to ensure sufficient funds are available when taxes are due. Your lender pays property taxes directly to Somerset County on the March 31 due date and any subsequent installment dates.

Property tax escrow amounts are recalculated annually based on actual tax bills and account balances. If your property taxes increase due to reassessment or rate changes, your monthly escrow payment will adjust accordingly. Lenders must provide an annual escrow analysis showing how your payments were applied and any surplus or shortage. You can verify that taxes were paid correctly by checking with Somerset County's tax collector office or online portal. If you pay off your mortgage or refinance, ensure there's no gap in tax payment responsibility during the transition period.

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 Somerset County property taxes due for FY 2025? A: Property taxes are due March 31 annually, with some municipalities offering quarterly payment options. Contact your local tax collector for specific payment schedules and any available installment plans.

Q: What tax credits are available and how do I apply? A: Common credits include the Homestead Benefit (income-based, requires annual application), Senior Freeze (for seniors meeting income limits), Disabled Veteran credits, and Senior/Disabled Person Property Tax Deduction. All require separate applications with specific deadlines, typically by October 1st for the following tax year.

Q: How does the Homestead Benefit work? A: The Homestead Benefit is a tax credit that caps annual assessment increases, not an exemption that reduces market value. It requires annual application through NJ Division of Taxation and provides relief based on income levels. This credit appears on your tax bill after approval.

Q: How often are properties reassessed in Somerset County? A: Somerset County conducts periodic reassessments to maintain current market valuations. Reassessment schedules vary by municipality. Property owners receive notice before reassessment and can appeal assessments through the county tax board if they believe the valuation is incorrect.

Q: What are the penalties for late property tax payments? A: Late payments incur interest charges of 8% per year (prorated monthly) plus potential penalties. Extended delinquency can result in tax lien certificates being sold to investors, so prompt payment is essential.

Q: Can I pay property taxes online? A: Yes, Somerset County offers online payment options through county and municipal websites. Payment methods typically include electronic check, credit card (with processing fees), and bank transfers. Check your tax bill or local tax collector website for specific online payment portals.

Q: What if I disagree with my property assessment? A: You can appeal your assessment to the Somerset County Board of Taxation. Appeals must be filed by April 1st or 45 days after receiving a reassessment notice. You'll need evidence supporting your claim that the assessed value exceeds fair market value.

Q: How do special district taxes work? A: Special districts (fire, library, lighting, etc.) levy additional taxes beyond county, municipal, and school taxes. These appear as separate line items on your tax bill and fund specific services. Rates vary by location and the districts serving your property.

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