Mortgage Calculator — Nassau County, NY

Long Island · Updated 2026

How much house can you afford in Nassau County? With a median price of $780,000 and a typical effective property tax rate of 2.2%, here are the real numbers a typical buyer faces in Long Island — plus a calculator for your exact case.

The real example: a median home in Nassau County

Median home price$780,000
Down payment (20%)$156,000
Loan amount$624,000
Principal & interest / mo$3,944
Property tax / mo (2.2%)$1,430
Insurance / mo$150
Total monthly payment$5,524
Annual income needed (28% rule)$236,747
Assumptions: 20% down, 6.5% for 30 years, insurance $1,800/yr. Figures are indicative.

What to know about Nassau County

Nassau has some of the highest property taxes in the U.S. — often $15,000+/year — but no NYC mortgage recording tax, and grievance filings to lower assessments are common.

What about YOUR numbers?

Different income, debts, down payment or rate — the calculator adjusts instantly and gives you a conservative-to-aggressive range for Nassau County.

Calculate my Nassau County mortgage →

Frequently asked questions

What is the property tax rate in Nassau County?

The typical effective rate in Long Island is about 2.2% of home value per year. On a median $780,000 home that is roughly $17,160 per year ($1,430 per month).

How much income do I need to buy a house in Nassau County?

For the median $780,000 home with 20% down, the total payment is about $5,524/mo. Under the 28% rule you need a gross income of ~$236,747 per year. With a smaller down payment or existing debts, the figure rises.

Do I pay NYC closing taxes in Nassau County?

No. Long Island is outside NYC, so the city's mortgage recording tax does not apply. The 1% state mansion tax only kicks in at $1 million or more.

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Indicative figures based on public data and the stated assumptions; not financial advice. Confirm rates and taxes with your lender and attorney.