Free mortgage refinance calculator tailored for New Jersey (NJ). Calculate instantly with state-specific rates and rules.
With a median home value of $480,000 in New Jersey, many homeowners have accumulated significant equity since 2020. New Jersey benefited from NYC out-migration during COVID, pushing suburban prices sharply higher. Bergen, Morris, Monmouth, and Somerset counties carry the highest values and highest tax bills in the state.
Refinancing costs approximately $7,200 in New Jersey. New Jersey has a Realty Transfer Fee (RTF) of up to 1.21% of sale price on the seller side. Buyers also pay a Mansion Tax of 1% on residential purchases above $1M. Combined, closing costs are among the highest in the nation. Your break-even is when cumulative monthly savings equal these upfront costs.
To qualify for a conventional rate-and-term refinance in New Jersey, your balance must stay under $1,089,300. All New Jersey counties qualify for high-cost conforming limits, ranging from $952,750 to $1,089,300 depending on the county.
Refinancing doesn't trigger a property reassessment in New Jersey. Your 2.13% effective rate stays constant — only the principal and interest portion of your payment changes. New Jersey's property taxes are the highest in the nation in both rate and average dollar amount. A median-priced NJ home generates over $9,000/year in property taxes — roughly equivalent to the entire mortgage payment on a modest home in many other states.
Data: Tax Foundation (2024), US Census Bureau ACS 2023, Zillow, ATTOM Data Solutions. Updated 2024–2025. Figures reflect state averages — consult a licensed professional for personalized advice.
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