The property tax rate in Keansburg, NJ is 2.200 per $100 of assessed value for the 2024 and 2025 tax years.1New Jersey Department of the Treasury. Monmouth County Board of Taxation Tax Year 2025 That single rate blends three levies: the municipal portion, the Keansburg Board of Education’s school portion, and the Monmouth County portion set by the county commissioners.2Monmouth County. Property Taxation Within the County of Monmouth The average residential tax bill in the borough was $6,680 in the most recent state data.3New Jersey Department of the Treasury. Average Residential Tax Bill 2023
How Your Bill Is Calculated
Two numbers drive your annual tax: the rate and your property’s assessed value. Assessed value is what the borough assessor puts on your property for tax purposes, which is usually different from what the home would sell for. To calculate the bill, divide the assessed value by 100 and multiply by 2.200.
A home assessed at $200,000 owes $4,400 a year ($200,000 ÷ 100 × 2.200). A home assessed at $300,000 owes $6,600. The formula is the same statewide; only the rate and the assessment change.4New Jersey Department of the Treasury. 2024 General and Effective Tax Rates
Quarterly Due Dates and Late Penalties
Keansburg bills property taxes in four quarterly installments, due February 1, May 1, August 1, and November 1. Each installment carries a 10-day grace period, so a payment received by the 10th of the month avoids penalty.5Justia. New Jersey Code 54:4-67 – Discount for Prepayment; Interest for Delinquencies; Notification; Exceptions
Miss the grace period and interest is charged back to the original due date, not from the day the payment finally arrives. The rate caps at 8% per year on the first $1,500 of the delinquency and 18% per year on anything above that.5Justia. New Jersey Code 54:4-67 – Discount for Prepayment; Interest for Delinquencies; Notification; Exceptions
There is a separate year-end penalty that surprises some homeowners. If your total delinquency is more than $10,000 and you have not paid by the end of the fiscal year, the borough can add up to 6% on top of the interest already accrued.5Justia. New Jersey Code 54:4-67 – Discount for Prepayment; Interest for Delinquencies; Notification; Exceptions
Ways to Pay
You can pay online through the borough’s payment portal, though credit card payments carry a convenience fee from the third-party processor.6Borough of Keansburg. Online Payments Checks made out to the Borough of Keansburg can be mailed to the Tax Collector at 29 Church Street, Keansburg, NJ 07734. Include the stub from your bill so the payment posts to the right account.7Borough of Keansburg. Tax Collection
If You Pay Through a Mortgage Escrow
Most homeowners with a mortgage pay property taxes through an escrow account. The lender estimates the annual tax, divides it by twelve, and adds it to each monthly mortgage payment. When each quarterly bill comes due, the lender pays the borough directly, and under New Jersey rules the lender files an authorization form so the original tax bill goes to them rather than to you.
Even so, watch your bills. Lenders sometimes miscalculate, and you are ultimately responsible if a payment is late. If you pay off or refinance your mortgage, billing reverts to you and you will need to start paying the borough directly.
Deductions That Reduce the Bill
New Jersey offers two $250 property tax deductions that come straight off your bill, not off your income taxes. A homeowner who qualifies for both can claim $500 total.
Senior Citizen or Disabled Person
If you are 65 or older, or permanently disabled, file Form PTD with the Keansburg tax assessor to claim the $250 deduction.8New Jersey Division of Taxation. Property Tax Deduction for Senior Citizens/Disabled Persons You must have been a New Jersey resident for at least one year, and your annual income, combined with a spouse’s if applicable, cannot exceed $10,000 after excluding Social Security and government pension income.9New Jersey Department of the Treasury. Claim for Real Property Tax Deduction – Form PTD That exclusion matters. Plenty of seniors whose gross income sounds too high still qualify once Social Security and public pensions come out of the calculation.
Veterans
Honorably discharged veterans can claim a separate $250 deduction by filing Form V.S.S. with the assessor along with a copy of their DD-214.10New Jersey Division of Taxation. $250 Veterans Property Tax Deduction A 2020 constitutional amendment removed the old wartime-service requirement, so any honorable service now qualifies.11New Jersey Department of the Treasury. Property Tax Deduction Claim by Veteran – Form V.S.S.
State Relief Programs Worth Applying For
Two state programs sit on top of the local deductions and can be worth substantially more.
ANCHOR
The ANCHOR program pays a direct benefit to New Jersey homeowners and renters who meet income limits. The 2025 application year has a filing deadline of November 2, 2026. Seniors 65 and older file the combined Form PAS-1, while most homeowners under 65 have their applications auto-filed and receive a benefit confirmation letter in the mail.12New Jersey Division of Taxation. ANCHOR Program If no confirmation arrives, file electronically or by mail before the deadline. The benefit amount depends on income and whether you own or rent.
Senior Freeze
The Senior Freeze reimburses eligible homeowners for property tax increases after a “base year,” which is the first year you met every eligibility test. You or your spouse must be 65 or older or receiving Social Security disability, and you must have owned and lived in your current home since at least December 31, 2022. Combined income cannot exceed $172,475 for 2025.13New Jersey Division of Taxation. Senior Freeze Eligibility Requirements That income ceiling is far higher than the $10,000 limit for the local deduction, so many homeowners who cannot claim the deduction still qualify here.
The program does not actually freeze your bill. The borough still charges the full amount, and the state reimburses the difference between your current bill and your base-year bill. You reapply every year. If your income tops the limit once, a one-time exemption preserves your base year for the following year’s application.
Appealing Your Assessment
If you believe your assessed value is too high, you can challenge it before the Monmouth County Board of Taxation. Monmouth uses an alternative assessment calendar, which sets the filing deadline at January 15 of the tax year rather than the April 1 deadline used in most other New Jersey counties.14New Jersey Division of Taxation. Assessment and Appeals If you receive a notice that your assessment has changed, you have 45 days from that notice to file, even after January 15.15Justia. New Jersey Code 54:3-21 – Appeal to County Board of Taxation
File Form A-1 (the petition) and Form A-1 Comp. Sale (comparable sales) with the county tax board, and serve copies on both the Keansburg tax assessor and the municipal clerk. The county also runs an online filing system that distributes copies to all parties automatically.16Monmouth County. Understanding Property Assessment Appeals
Filing fees scale with assessed value:
- Under $150,000: $5
- $150,000 to $499,999: $25
- $500,000 to $999,999: $100
- $1,000,000 or more: $150
There is no fee when you are appealing the denial of a veteran, senior, or disabled person deduction.16Monmouth County. Understanding Property Assessment Appeals
Strong appeals rely on recent comparable sales of similar Keansburg homes that support a lower valuation. Photographs and property record cards help. A residential appraisal runs roughly $675 to $1,000, so weigh the cost against the tax savings before hiring one.
If You Fall Behind
New Jersey law requires every municipality to hold at least one tax lien sale each year for properties with delinquent taxes. The borough does not sell your property at that sale. It sells a lien on the property to an investor, who pays your delinquent taxes and earns interest until you redeem. Redemption costs you the original delinquency plus interest plus a redemption penalty of 2%, 4%, or 6% depending on the size of the lien.17New Jersey Department of Community Affairs. Tax Sales – NJ Division of Local Government Services
If you do not redeem within two years, the lienholder can start foreclosure in Superior Court, and you risk losing the home. If you are falling behind, call the Keansburg tax collector before the situation escalates. Interest, penalties, and legal exposure only grow with time.
Federal SALT Deduction
Property taxes you pay to Keansburg can be deducted on your federal return through the state and local tax (SALT) deduction, but only if you itemize instead of taking the standard deduction. Under the One, Big, Beautiful Bill Act signed on July 4, 2025, the SALT cap for the 2026 tax year is $40,400 for most filers and $20,200 for married filing separately. The cap covers property taxes combined with either state income taxes or state sales taxes, rises 1% annually through 2029, and may be reduced above certain income thresholds. Many Keansburg homeowners come out ahead with the standard deduction, so run the numbers both ways before you itemize.