About the Jumbo Loan Calculator
This jumbo loan calculator estimates the monthly payment on a mortgage larger than the conforming loan limit set each year by the Federal Housing Finance Agency (FHFA). Loans above the limit cannot be bought by Fannie Mae or Freddie Mac, so lenders apply their own, usually stricter, rules: larger down payments, higher credit scores, and several months of cash reserves.
Enter the home price, down payment, rate, term, property tax and insurance. The calculator shows whether the loan is jumbo, how far it is above the limit, your full monthly payment, total interest, and an estimate of the reserves and total cash you need to close.
The default limit is the 2026 baseline conforming limit for a one-unit home in most of the US, $832,750. High-cost areas have limits up to 150% of the baseline ($1,249,125), so enter your county’s limit for an accurate test. Reserve requirements vary by lender, commonly 6 to 12 months of payments.
With the default inputs, the total monthly payment is $7,636.90. Change any value above to recalculate instantly.
How to use the jumbo loan calculator
- 1Enter the home price and your down payment percentage.
- 2Enter the rate quoted for a jumbo loan and choose a term.
- 3Add yearly property tax and insurance.
- 4Enter your county’s conforming limit and the reserves your lender requires.
- 5Review the payment, the jumbo status and total cash needed.
Formula and method
The loan L is the price minus the down payment percentage d. The principal-and-interest payment M uses the standard amortization formula with monthly rate r and n monthly payments. The total payment adds one-twelfth of yearly property tax T and insurance I.
The loan is jumbo when L exceeds your county’s conforming limit. Lenders then often require k months of the full payment in liquid reserves after closing; the calculator adds that to the down payment to show the cash you need, before closing costs.
- L
- Loan amount
- d
- Down payment as a fraction of price
- r
- Monthly interest rate
- n
- Number of monthly payments
- k
- Months of reserves required
Worked examples
$1.2M home, 20% down at 7%
A $960,000 loan is $127,250 above the $832,750 baseline limit, so it is jumbo. Principal and interest are $6,386.90; with $1,250 a month of tax and insurance the payment is about $7,637. Six months of reserves is about $45,821, so you need roughly $285,821 plus closing costs.
$2M home in a high-cost area, 15-year
Even against the $1,249,125 high-cost limit, a $1.5M loan is jumbo. A 15-year term at 6.875% costs $13,377.82 a month in principal and interest, and twelve months of reserves is about $189,534.
$900k home with 10% down stays conforming
A $810,000 loan is below the $832,750 limit, so it is a conforming loan despite the high price. The payment is $5,119.75 plus $950 of tax and insurance.
Frequently asked questions
What is the jumbo loan limit for 2026?+
For 2026 the baseline conforming limit for a one-unit home is $832,750 in most of the US. Loans above that are jumbo. In high-cost areas the limit rises up to $1,249,125, and it is higher in Alaska and Hawaii.
How much down payment do I need for a jumbo loan?+
Many jumbo lenders ask for 10% to 20% down, and some offer lower down payments to borrowers with excellent credit and large reserves. Requirements vary more than for conforming loans.
Are jumbo loan rates higher?+
Not always. Jumbo rates can be slightly higher or even lower than conforming rates depending on the market and the lender’s appetite. Compare quotes from several lenders.
How many months of reserves do jumbo lenders require?+
Commonly 6 to 12 months of the full housing payment in liquid or retirement assets after closing, and sometimes more for larger loans or investment properties.
How can I avoid a jumbo loan?+
Put enough down to bring the loan under the conforming limit, or use a piggyback structure with a first mortgage at the limit and a second loan for the rest.
Results are estimates for educational purposes and are not financial advice. Rates, fees and terms vary — confirm with your lender or a licensed advisor before making decisions.