CALCULATOR
How Much House Can I Afford in NJ? Home Affordability Calculator
New Jersey property taxes change this answer more than almost anywhere else in the country. A payment that works in Arizona can break a budget in Middlesex County, so this home affordability calculator builds the real tax bill into every number.
Quick answer: A household earning $200,000 with $500 a month in other debts and $100,000 down can comfortably afford about $800,000 in Central Jersey, and up to about $985,000 at a lender's 43% limit, at a 6.5% rate with $11,000 a year in property tax. Every extra $1,000 a year in property tax lowers that by roughly $13,000.
By Jasmine Tsui, NJ Realtor, Weichert Realtors North Edison · Last reviewed · 中文版
1Your money
2The loan
3The home
READING THE RESULT
The number a lender approves and the number you should spend are rarely the same.
Underwriting looks at gross income and recorded debt. It does not know about the tuition you pay in cash, the parent you support overseas, or the renovation the kitchen will need in year two. That is why the 36% figure sits next to the 43% one — most buyers who stay comfortable land between them.
Three things this tool cannot see
- PMI. Below 20% down, conventional loans add mortgage insurance until you reach 20% equity.
- Tax reassessment. A recent sale can reset the assessed value, and your tax bill with it.
- Reserves. Lenders want to see months of payments left in the bank after closing.
NJ affordability by income
How much house can I afford on my income in New Jersey?
On a household income between $150,000 and $300,000, most Central Jersey buyers can comfortably afford about 3.75 to 4.25 times their income, assuming typical New Jersey property taxes and today's rates. The table below uses this page's own calculator, with the same assumptions for every row.
| Household income | Comfortable price | Monthly payment | Lender maximum | Monthly payment |
|---|---|---|---|---|
| $100,000 | $325,000 | $2,500 | $420,000 | $3,083 |
| $125,000 | $445,000 | $3,250 | $560,000 | $3,979 |
| $150,000 | $565,000 | $4,000 | $705,000 | $4,875 |
| $200,000 | $800,000 | $5,500 | $985,000 | $6,667 |
| $250,000 | $1,040,000 | $7,000 | $1,270,000 | $8,458 |
| $300,000 | $1,275,000 | $8,500 | $1,555,000 | $10,250 |
Assumptions: $500 a month in other debts, $100,000 down, a 6.5% 30-year fixed rate (an example, not a quote), $11,000 a year in property tax, $1,800 a year in home insurance, no HOA fee. Monthly payment includes principal, interest, tax and insurance. Mortgage insurance is not included. Prices rounded to the nearest $5,000. Your lender's rate and the tax bill on the actual home will change these numbers.
Property tax by town
How property taxes change what you can afford in Central Jersey
At a 6.5% rate on a 30-year loan, every extra $1,000 a year in property tax lowers the price you can afford by about $13,000. Here is what that means for the same buyer across Middlesex County towns.
| Town | Average residential tax bill (2024) | Per month | Comfortable price on $200K income |
|---|---|---|---|
| Piscataway | $8,520 | $710 | $835,000 |
| Woodbridge | $9,242 | $770 | $825,000 |
| Edison | $10,513 | $876 | $810,000 |
| South Brunswick | $10,521 | $877 | $810,000 |
| East Brunswick | $11,284 | $940 | $800,000 |
| Metuchen | $13,204 | $1,100 | $770,000 |
| Middlesex County average | $9,528 | $794 | — |
| New Jersey average | $9,898 | $825 | — |
Tax bills: New Jersey Division of Taxation, 2024 Average Residential Tax Report. These are town-wide averages. The bill on a specific home can be far higher or lower, and a sale can lead to a reassessment. Comfortable price uses the same assumptions as the income table above, with each town's average bill. Compare school districts in the school district guide.
Less than 20% down
How much does mortgage insurance (PMI) add in New Jersey?
On a conventional loan with less than 20% down, lenders add private mortgage insurance. Freddie Mac estimates it at roughly $30 to $70 a month for every $100,000 borrowed. On a $640,000 loan that is about $190 to $450 a month, which this calculator does not include, so subtract it from your comfortable budget.
- You can ask to cancel PMI once you reach 20% equity on a conventional loan.
- It ends automatically when your balance is scheduled to reach 78% of the original value, if your payments are current.
- FHA loans use a different mortgage insurance premium with its own rules.
Methodology
How this NJ affordability calculator works
- It takes your household income before tax and divides it by 12.
- It multiplies that by 36% for the comfortable budget and 43% for the lender maximum. These are debt-to-income limits for all monthly debts, including the new home.
- It subtracts your other monthly debts, then the monthly property tax, home insurance and HOA fee.
- What is left is the principal and interest you can carry. It converts that into a loan amount using your rate and loan length.
- Loan amount plus your down payment is the home price.
Unlike national calculators, it asks for the actual property tax bill on a home you like, because in New Jersey that bill can be the difference between a $770,000 and an $835,000 budget on the same income.
Sources: NJ Division of Taxation, 2024 Average Residential Tax Report · CFPB on debt-to-income ratio · Freddie Mac on PMI · FHFA 2026 conforming loan limits
Related tools: NJ mortgage calculator · NJ closing cost calculator · rent vs. buy calculator · all calculators
Affordability calculator: frequently asked questions
How much house can I afford in New Jersey?
It depends on your income, your other debts, your down payment, the interest rate and the property tax on the home. As an example, a household earning $220,000 with $650 in monthly debts and $150,000 down, at a 6.5% rate and $18,000 a year in property tax, lands between about $830,000 and $1,030,000. Rates and taxes change, so run your own numbers in the calculator.
What is a debt-to-income ratio?
It is the share of your income before tax that goes to monthly debt payments, including the new housing payment. This calculator shows two levels: 36%, a long-standing guideline for a comfortable budget, and 43%, a common ceiling for conventional loans. Some lenders approve higher ratios for strong applications.
How do New Jersey property taxes change what I can afford?
Property tax is part of the monthly payment a lender counts, so a higher tax bill leaves less room for the loan. At a 6.5% rate on a 30-year loan, each extra $1,000 a year in property tax lowers the price you can afford by roughly $13,000. That is why two homes at the same price in different towns can fit a budget very differently.
Does the calculator include mortgage insurance?
No. If your down payment is under 20% of the price, a lender will usually add mortgage insurance to the monthly payment until you reach 20% equity. The calculator flags when that applies, and your lender can give you the exact cost.
Who pays the mansion tax in New Jersey, the buyer or the seller?
The seller. Since July 10, 2025, New Jersey's fee on sales over $1,000,000 is paid by the seller, not the buyer. Many online calculators still add it to the buyer's costs, which overstates what a buyer needs at closing.
How much cash do I need besides the down payment?
You also need closing costs, and lenders want to see reserves left in the bank after closing. The closing cost calculator on this site estimates the cash to close for a New Jersey purchase.
How much income do I need to buy a $700,000 home in New Jersey?
About $170,000 a year to stay comfortable at a 36% debt-to-income ratio, or about $142,000 at a lender's 43% limit. That assumes 20% down ($140,000), a 6.5% 30-year rate, $11,000 a year in property tax, $1,800 a year in insurance and $500 a month in other debts. A higher tax bill or less down raises the income you need.
What credit score do I need to buy a home in New Jersey?
There is no single number. Since November 2025, Fannie Mae no longer applies a fixed 620 minimum to loans run through its Desktop Underwriter system, but many lenders and mortgage insurers still set their own floors, often around 620. FHA loans allow 3.5% down with a 580 score. A higher score mainly lowers your rate and mortgage insurance cost, which raises what you can afford.
Next step: estimate your cash to close with the NJ closing cost calculator, or see the buyer services page.
NEXT STEP
Want this run on a real listing?
Send me your pre-approval letter and the towns you are considering. I will come back with a price band and the tax bill for each town, not a national average. I work with buyers in English, Mandarin and Cantonese.