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Mortgage Calculator

Work out your monthly mortgage payment, with property tax and home insurance folded in, plus the total interest and total cost over the life of the loan.

Home and down payment

Loan term

Rate, tax, and insurance

Everything runs in your browser. Nothing is uploaded.

Monthly payment
2,572.62
per month for 360 payments, including 550.00 tax and insurance
2,022.62
Principal & interest
550.00
Taxes & insurance
320,000.00
Loan amount
408,142.36
Total interest
926,142.36
Total paid

Estimates cover principal, interest, property tax, and home insurance. Mortgage insurance, HOA dues, and closing costs are not included, so confirm exact figures with your lender.

How to calculate a mortgage payment

  1. Enter the price and down payment

    Type the home price, then set your down payment as a fixed amount or as a percentage of the price.

  2. Set the term and rate

    Pick a 15 or 30 year term, or enter a custom length, and type the annual interest rate.

  3. Add taxes and insurance

    Optionally enter annual property tax and home insurance to fold them into the monthly payment, or leave them blank.

  4. Read the result

    The monthly payment, total interest, and total cost update instantly as you type.

Why use this tool

Taxes and insurance included

Annual property tax and home insurance are split into monthly amounts and added on top of principal and interest, so the figure matches what actually leaves your account each month.

Down payment in cash or percent

Enter a down payment as a flat amount or as a share of the price and switch between the two, and the loan amount and payment recompute without losing your place.

15 or 30 years in one tap

Compare a 15 year term against a 30 year term with a single tap, or type any custom length, to see how much interest a shorter loan saves.

Total interest and total cost

Total interest and total amount paid sit next to the monthly payment, the fastest way to weigh a lower payment against a higher lifetime cost.

Handles 0% and empty fields

A zero interest rate divides the balance evenly instead of erroring, and tax and insurance are optional, so partial input still returns a useful answer.

Private by default

Home prices and loan figures are personal. Everything is calculated on your device and nothing is uploaded, stored, or logged.

About this tool

This mortgage calculator estimates the monthly payment on a fixed-rate home loan and shows what it costs over the full term. It starts from the home price and your down payment, works out the amount actually borrowed, and applies the standard amortization formula so every monthly payment is the same size. Early payments lean heavily toward interest, because interest is charged on the balance still owed; as the balance falls, more of each payment clears principal. If you enter annual property tax and home insurance, they are split into monthly amounts and added on top, so the headline number reflects principal, interest, taxes, and insurance together rather than principal and interest alone.

Use it to size a purchase before you talk to a lender, or to compare offers side by side. The clearest lever is the term: a 15 year loan carries a higher monthly payment but far less total interest than a 30 year loan for the same amount, and switching between the two here takes one tap. The down payment matters just as much, since a larger deposit shrinks both the balance and the interest that builds on it. For a plain loan without taxes and insurance, the loan calculator covers the same math, the compound interest calculator handles money that grows rather than money owed, and the percentage calculator is there for quick one-off rate sums.

These figures are estimates for principal, interest, taxes, and insurance only. Mortgage insurance, HOA dues, closing costs, and extra repayments are not modeled, so a real statement can differ, and you should confirm exact numbers with your lender. Home prices and loan amounts are sensitive, and this page treats them that way: every calculation runs in your browser as you type, and nothing is uploaded, stored, or logged.

Frequently asked questions

How is the monthly mortgage payment calculated?
The loan amount is the home price minus your down payment. The tool uses the standard amortization formula with monthly compounding: the loan amount times the monthly rate, divided by one minus (1 plus the monthly rate) raised to the power of minus the number of payments. Monthly property tax and insurance are added on top when you enter them.
What is included in the monthly payment?
Principal and interest are always included. Property tax and home insurance are added to the monthly payment only when you enter their annual amounts, divided by twelve. The large figure at the top is the total of all of these.
Does it include mortgage insurance, HOA, or closing costs?
No. The calculator covers principal, interest, property tax, and home insurance. Mortgage insurance, HOA dues, origination and closing fees, and other charges are not modeled, so a real payment can be higher. Confirm exact figures with your lender.
Can I enter the down payment as a percentage?
Yes. Toggle the down payment between a cash amount and a percentage of the home price. Switching converts the value you already entered, so a 20% deposit and its cash equivalent stay in sync.
What happens at a 0% interest rate?
A zero rate is valid input. Instead of erroring, the tool divides the loan amount evenly across every payment in the term, then adds any monthly tax and insurance on top.
Is my data uploaded anywhere?
No. The home price, down payment, rate, and every other figure never leave your device. All calculations run in your browser and nothing is sent to a server, stored, or logged.

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