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New Jersey 15 vs 30 Year Mortgage

Compare 15-year and 30-year mortgage options for New Jersey homes. See the monthly payment difference and total interest savings on the $505K median home.

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Interactive tool with New Jersey-specific defaults

15-Year vs. 30-Year Mortgage in New Jersey

The choice between a 15-year and 30-year mortgage in New Jersey comes down to monthly cash flow versus total cost. On the $505K median home with 10% down, a 30-year mortgage at 6.5% gives you a total PITI of $4,037/mo. A 15-year mortgage at 6.0% (15-year rates are typically 0.5-0.75% lower) pushes that to $5,000/mo — about $963 more per month. But you save approximately $344K in total interest and own the home free and clear in half the time.

In New Jersey's higher-cost market, the monthly difference between 15 and 30 years is substantial: $963 per month. That is a significant commitment for many New Jersey households, especially first-time buyers already stretching to afford the down payment and closing costs. The 30-year mortgage often makes more practical sense here, preserving monthly flexibility while still building equity. If your income grows over time, you can always make extra principal payments on a 30-year loan to capture some of the interest savings without being locked into the higher payment.

With New Jersey's 2.47% property tax rate adding $1,039/mo to the payment regardless of loan term, the tax component narrows the relative difference between 15 and 30 years. Taxes and insurance are constants in both scenarios — only the principal and interest portion changes. This means the percentage increase from choosing a 15-year term is smaller than it appears from the P&I numbers alone, because taxes and insurance are already a large share of the total in a high-tax state like New Jersey.

Whichever term you choose, the NJHMFA DPA Program program (up to $15,000 forgivable) can ease the upfront burden. Use the full 15 vs 30 year mortgage comparison tool to model both scenarios with your actual numbers — including New Jersey-specific property taxes and insurance — and see the month-by-month difference in equity growth, interest paid, and total cost.

New Jersey Housing at a Glance

Median Home Price
$505K
New Jersey statewide
Property Tax Rate
2.47%
$1,039/mo on median
Avg Closing Costs
$10K
2.0% of purchase price
Homeowners Insurance
$1,500/yr
$125/mo
New Jersey First-Time Buyer Program
NJHMFA DPA Program
Down payment assistance: Up to $15,000 forgivable

Common Questions

Is a 15-year mortgage worth it in New Jersey?+
A 15-year mortgage on the New Jersey median home saves approximately $344K in total interest compared to a 30-year term, but the monthly PITI jumps from $4,037 to $5,000 — an increase of $963/mo. It is worth it if you can comfortably afford the higher payment while still saving for retirement and maintaining an emergency fund. If the higher payment would strain your budget, the 30-year term with occasional extra payments is a safer approach.
What is the rate difference between 15 and 30 year mortgages?+
15-year mortgage rates are typically 0.5% to 0.75% lower than 30-year rates. As of 2026, if 30-year rates are near 6.5%, 15-year rates would be approximately 5.75%-6.0%. This rate advantage compounds the savings: you pay less interest per dollar borrowed AND you borrow for half as long. On the $505K New Jersey median home, this combination produces savings of roughly $344K over the life of the loan.
Can I refinance from a 30-year to a 15-year mortgage in New Jersey?+
Yes. If rates drop or your income increases after purchase, refinancing from a 30-year to a 15-year mortgage is a common strategy. Closing costs for a refinance in New Jersey typically run 1-2% of the loan balance. The breakeven on those costs is usually 2-3 years, so it makes sense if you plan to stay in the home at least that long. Alternatively, you can simply make extra payments on your 30-year loan to achieve a similar effect without paying refinance fees.
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