Rate Breakdown

Property taxes in Mercer County are calculated by multiplying the assessed value (minus exemptions) by the total local millage rate.

How Property Tax Works in Mercer County

In Mercer County, property taxes are determined by the assessed value of your real estate multiplied by the local tax rate, often referred to as the millage rate. Each year, local municipal tax assessors determine the "fair market value" of properties within their jurisdiction. This assessment ensures that the tax burden is distributed equitably among all property owners. The total tax rate is composed of three primary segments: municipal taxes, school district taxes, and county taxes. Because school funding and municipal budgets vary significantly between towns like Princeton, Hamilton, and Ewing, the final tax rate is unique to each specific municipality.

Available Exemptions

New Jersey offers several property tax relief programs designed to assist eligible homeowners in reducing their tax liability. It is important to note that the state has transitioned away from the traditional "Homestead Rebate" toward the ANCHOR program. Key exemptions include:

• Senior Citizens and Disabled Persons Deduction: An annual deduction of $250 for homeowners aged 65 or older, or those who are permanently and totally disabled, provided they meet specific income requirements.
• Veteran Deduction: An annual $250 deduction for honorably discharged veterans who served during specific wartime periods or their surviving spouses.
• 100% Disabled Veteran Exemption: A full property tax exemption for honorably discharged veterans with a service-connected, 100% permanent disability rating.
• ANCHOR Program: A state-funded relief program that provides cash payments to homeowners who meet residency and income criteria.

Payment Schedule & Deadlines

Property taxes in Mercer County are billed on a quarterly basis. It is the responsibility of the homeowner to ensure payments are received by the municipal tax collector by the following due dates: February 1, May 1, August 1, and November 1. New Jersey law allows for a grace period, typically extending up to the 10th day of the month in which the payment is due. If the 10th falls on a weekend or holiday, the grace period is extended to the next business day. Failure to pay by the deadline results in interest charges, which can accrue at a rate of 8% on the first $1,500 of the delinquency and 18% on any amount exceeding $1,500. Persistent non-payment may eventually lead to a municipal tax lien sale.

Appealing Your Assessment

If you believe your property has been over-assessed compared to similar properties in your neighborhood, you have the right to file an appeal. In Mercer County, appeals must be submitted to the Mercer County Board of Taxation by April 1 of the tax year (or within 45 days of the mailing of the Notice of Assessment). To succeed, you must provide credible evidence—such as comparable sales data or a professional appraisal—demonstrating that your property’s assessed value does not accurately reflect its fair market value. It is highly recommended to review your property record card at your local assessor’s office before initiating the formal appeal process.