Mortgage Calculator

Estimate your monthly mortgage payment and figure out how much house you can actually afford.

Mortgage Calculator
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  1. Estimate Your Monthly Payment
  2. How Much House Can You Afford?
  3. What Makes Up the Payment (PITI)
  4. How Your Loan Type Changes the Payment
  5. Should You Refinance?
  6. Ways to Lower Your Payment

Estimate Your Monthly Payment

This calculator turns a home price, down payment, interest rate, and loan length into a real monthly number. It does not stop at principal and interest. It folds in property taxes, home insurance, and private mortgage insurance so the figure you see is close to the bill you would actually pay. Type in your own numbers and the estimate updates as you go. For the full story on how a home loan works, read the complete mortgages guide.

Treat the result as a planning number, not a quote. Rates move daily, tax rates vary by county, and insurance depends on the property. The point is to get a budget you can trust before you start touring houses.

How Much House Can You Afford?

Affordability comes down to two limits lenders call the 28/36 rule. Your total housing payment should stay under 28 percent of your gross monthly income, the amount you earn before taxes. All of your debt payments combined, including the mortgage, car loans, student loans, and credit card minimums, should stay under 36 percent. That second number is your debt-to-income ratio, or DTI, and it is the figure a lender weighs most heavily.

The table below shows the comfortable housing ceiling at a few income levels. The right column tightens that ceiling once other debts are in the picture.

Gross Monthly Income28% Housing CeilingComfortable Payment With Some Debt
$4,000$1,120$900 to $1,120
$6,000$1,680$1,400 to $1,680
$8,000$2,240$1,900 to $2,240
$10,000$2,800$2,400 to $2,800

One warning the calculator cannot give you. A bank will often approve a payment far above what the 28 percent rule suggests is comfortable. An approval is a ceiling, not a recommendation. Leaving room for repairs, savings, and everyday life is what keeps a house from turning into a financial strain.

What Makes Up the Payment (PITI)

A full mortgage payment covers four parts. Loan officers shorten them to PITI. Knowing each piece explains why the calculator's total is higher than a simple loan repayment.

  • Principal: The slice that pays down the actual money you borrowed.
  • Interest: The fee the lender charges to lend you the money.
  • Taxes: Local property taxes, usually collected monthly into an escrow account. A homestead exemption can lower this part if the home is your primary residence.
  • Insurance: Your home insurance premium, also held in escrow. Read more in the guide to property taxes and home finances.
  • PMI: Private mortgage insurance, added only when your down payment is under 20 percent. It drops off once you build enough equity.

How Your Loan Type Changes the Payment

The same home price can carry very different payments depending on the loan you pick. A shorter term raises the monthly cost but cuts total interest. An adjustable rate starts low and can climb later. Government-backed programs open the door with smaller down payments. Switch the term in the calculator above to see the effect for yourself.

Loan TypeMonthly PaymentBest For
30-Year FixedLowest fixed paymentLong-term stability and lower monthly cost
15-Year FixedHigher, paid off twice as fastCutting total interest and owning sooner
5/1 ARMStarts low, can rise after 5 yearsBuyers who expect to sell or refinance early
FHA / VASmall or zero down paymentFirst-time buyers and eligible veterans

A 30-year fixed loan keeps the principal and interest locked for the life of the loan. A 15-year fixed loan does the same but ends in half the time, so the payment is steeper. A 5/1 ARM holds a low rate for five years and then adjusts with the market. FHA and VA loans help buyers who have less cash up front, though FHA adds its own mortgage insurance.

Should You Refinance?

Refinancing replaces your current loan with a new one, ideally at a lower rate. It is not free. You pay closing costs again, usually 2 to 5 percent of the loan. The way to judge it is the break-even point: divide your total closing costs by the amount you save each month. If the costs run $4,000 and the new rate saves $200 a month, you break even in 20 months. Stay in the home past that point and the refinance pays for itself. Enter your numbers below to find your own break-even month.

Two cautions go with that number. A refinance resets the clock, so rolling ten years of payments into a fresh 30-year loan can raise your lifetime interest even when the monthly payment falls. Compare the total cost over the years you plan to keep the house, not just the new payment. For the full walkthrough of the refinance types, the closing costs, and when refinancing is not worth it, read our mortgage refinance guide.

Ways to Lower Your Payment

If the calculator returns a number that feels too high, a few levers can bring it down. Some change the loan, some change the upfront cash, and some are about shopping harder.

  • Put more down: A bigger down payment shrinks the loan balance and the interest you pay across the whole term.
  • Clear 20 percent equity: Once you reach 20 percent equity, you can request that PMI be removed, which trims the payment.
  • Shop multiple lenders: Ask two or three lenders for a written Loan Estimate and compare the same line items side by side.
  • Consider points: Paying discount points up front buys a lower rate, which can pay off if you keep the loan long enough.
  • Weigh a longer term: Stretching to a 30-year term lowers the monthly payment but costs more interest over time.
Pro Tip: Before you shop, get pre-approved rather than pre-qualified. A pre-approval means the lender verified your income and credit, so the budget you plan around is real. Sellers also take pre-approved offers more seriously when you are buying a home.

Frequently asked

How much house can I afford?

A common guideline is the 28/36 rule. Keep your total housing payment under 28 percent of your gross monthly income, and keep all your debts combined under 36 percent. Plug your income, debts, and a sample interest rate into the calculator to find a comfortable payment, then work backward to a home price. A lender approval is a maximum, not a target.

What is included in a monthly mortgage payment?

A full payment is called PITI: principal, interest, taxes, and insurance. Principal and interest pay back the loan, taxes and home insurance are collected in escrow, and private mortgage insurance is added if your down payment is under 20 percent. The calculator adds these pieces together so the number you see is closer to your real bill.

How much down payment do I need?

Conventional loans can start around 3 percent, FHA loans at 3.5 percent, and some VA and USDA loans require nothing down. Putting down less than 20 percent usually triggers PMI, which raises the monthly payment until you build enough equity. A larger down payment lowers both the loan balance and the interest you pay over time.

When is refinancing worth it?

Refinancing costs about 2 to 5 percent of the loan in closing costs, so find the break-even point by dividing those costs by your monthly savings. If you plan to stay in the home past that month, the refinance usually pays off. Watch out for resetting a loan back to 30 years, which can raise your lifetime interest even when the monthly payment drops.

How is PMI calculated?

Private mortgage insurance is typically 0.3 to 1.5 percent of the loan amount per year, billed monthly inside your payment. The exact rate depends on your credit score and down payment size. You can usually request cancellation once you reach 20 percent equity, and most lenders drop it automatically at 22 percent.

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