New Jersey Mortgage Calculator (with New Jersey Property Taxes & Insurance)

New Jersey has carried one of the two heaviest property tax burdens in the United States for years running, trailing only Illinois on effective rate, and the rate used in this calculator, 1.89%, sits well above the national average of roughly 0.89%. Specific towns can run higher still. The reason traces back to New Jersey's heavy reliance on local property tax to fund public schools, which are largely locally controlled and locally funded rather than centrally financed by the state.

The state does offer relief programs that partially offset the bill for eligible homeowners. The ANCHOR (Affordable New Jersey Communities for Homeowners and Renters) program provides an annual rebate to qualifying homeowners and renters based on income, and the Senior Freeze (Property Tax Reimbursement) program reimburses eligible senior and disabled homeowners for property tax increases once they qualify and enroll. Neither of these programs is reflected in this calculator's headline number, since eligibility depends on income, age, and residency history rather than home price alone.

Buyers should also know that New Jersey's Realty Transfer Fee, charged at the time of sale rather than annually, includes an additional "mansion tax" component on higher-value residential transactions, restructured in 2025 to apply graduated rates starting above $1,000,000 and rising for properties above $2,000,000, $2,500,000, $3,000,000, and beyond. This calculator's baseline $380,000 example falls well under that threshold, but higher-priced New Jersey purchases should budget for it separately as a closing cost, not a monthly payment line.

1. Down payment and loan principal. The chosen down payment percentage applies to the home price; the remainder becomes the financed loan principal.
2. Monthly principal and interest. Loan principal, annual rate, and a 360-month term run through a standard fixed-rate amortization formula, producing a level monthly payment split between interest on the remaining balance and principal reduction.
3. New Jersey property tax estimate. Home price is multiplied by an assumed 1.89% effective annual rate and divided by 12 for a monthly escrow figure, reflecting a statewide blended average; specific counties and towns, particularly in northern New Jersey, frequently run higher.
4. Homeowners insurance estimate. A flat $125 monthly placeholder represents a typical policy; coastal New Jersey properties near the shore can carry meaningfully higher premiums due to wind and flood exposure.
5. Total monthly payment (PITI). Principal and interest, property tax, and insurance sum into one headline figure, with a full 360-payment amortization schedule tracking the balance to zero.

Using the calculator's baseline inputs: a $380,000 home, 20% down, and a 6.5% rate on a 30-year fixed loan.

• Down payment: $380,000 × 20% = $76,000
• Loan principal: $380,000 − $76,000 = $304,000
• Monthly principal and interest: $1,921.49
• Estimated New Jersey property tax: $380,000 × 1.89% ÷ 12 = $598.50 per month ($7,182 per year)
• Estimated insurance: $125.00 per month
• Total monthly payment (PITI): $2,644.99
• Total interest paid over 30 years: approximately $387,733

In this example, property tax alone ($598.50 monthly, $7,182 annually) exceeds a typical car payment and represents roughly 23% of the total monthly housing cost, larger than the insurance and nearly a third the size of the principal and interest payment itself. Running the identical home price and loan terms in Nevada, where the effective rate assumption is 0.47%, drops the tax line to about $149 a month, a difference of roughly $450 every single month driven entirely by which state the home sits in.

• County and municipal rate variation. The 1.89% figure is a statewide blend; specific counties such as Essex, Bergen, or Union frequently exceed the state average, while some southern New Jersey counties run closer to or below it.
• ANCHOR and Senior Freeze relief programs. These can meaningfully reduce a household's net property tax burden for eligible homeowners but depend on income and age qualification, not modeled in this home-price-based estimate.
• The Realty Transfer Fee and mansion tax. These are one-time closing costs assessed on the sale itself, not part of the recurring monthly PITI figure this calculator produces.
• Private mortgage insurance (PMI). Any down payment under 20% typically triggers PMI on a conventional loan, not included in this baseline estimate.
• Flood insurance for shore and floodplain properties, which can add hundreds of dollars monthly beyond the flat $125 placeholder used here, particularly in FEMA-designated flood zones along the Jersey Shore.

• Assuming the statewide 1.89% average applies to every county. Northern New Jersey counties near New York City frequently carry higher effective rates than the state average used here.
• Overlooking ANCHOR and Senior Freeze eligibility. Homeowners who qualify but never apply leave real annual savings unclaimed; these programs require active enrollment, not automatic application.
• Forgetting the mansion tax on higher-value purchases. A New Jersey home priced well above this calculator's $380,000 baseline should add the graduated Realty Transfer Fee tiers to closing cost planning, separate from the monthly payment.
• Comparing New Jersey's total housing cost to a lower-property-tax state without adjusting for New Jersey's stronger school funding and public services, an apples-to-oranges comparison that ignores what the tax dollars fund.
• Ignoring PMI in the 5% down scenario, which understates the real monthly obligation on a low-down-payment purchase.

• New Jersey Division of Taxation, Property Tax Relief Programs (ANCHOR, Senior Freeze). nj.gov/treasury/taxation
• Consumer Financial Protection Bureau, Owning a Home resource center. consumerfinance.gov

Also consulted: New Jersey Division of Taxation, Realty Transfer Fee and Mansion Tax schedules; New Jersey Department of Community Affairs, county and municipal equalized tax rate tables.