Mortgage Calculator — Estimate Your Monthly Payment

Mortgage Calculator

Estimate your monthly mortgage payment — principal and interest, property taxes, homeowners insurance, and HOA dues — plus a full amortization schedule and payoff date.

Your loan details

Everything recalculates live as you type. Dollar amounts in USD.

$
$
%
%
$
$
$

Monthly payment

Total estimated monthly housing cost.

$0
estimated per month
Principal and interest
$0
Property tax
$0
Home insurance
$0
HOA dues
$0
$0
Loan amount
$0
Total interest
$0
Total of all payments
—
Payoff date

Amortization schedule

Where every payment goes, year by year — or month by month.

100% private

Every number is calculated in your browser with JavaScript. Your loan details are never uploaded or stored anywhere.

No signup

Run as many what-if scenarios as you like — change the rate, term, or down payment and watch the numbers update instantly.

Free forever

Full amortization schedule, payoff date, tax and insurance breakdown, and CSV export — all free, always.

How to use

  1. 1
    Enter the home price and down payment

    Type the home price, then set your down payment in dollars or as a percent — the two fields stay in sync automatically.

  2. 2
    Set your loan terms

    Enter the annual interest rate and the loan term in years, then add annual property tax, yearly homeowners insurance, and any monthly HOA dues.

  3. 3
    Read your monthly payment

    See the total monthly cost broken down into principal and interest, tax, insurance, and HOA — plus total interest over the life of the loan.

  4. 4
    Explore the amortization schedule

    Switch between yearly and monthly views to see exactly how each payment splits between principal and interest, and download the schedule as a CSV.

Features

Live recalculation

Every keystroke updates the payment, breakdown bars, and schedule — no calculate button needed.

True cost breakdown

Separates principal and interest from property tax, insurance, and HOA so you see the full monthly housing cost.

Full amortization schedule

Every payment split into principal and interest, with a running balance — view yearly or month by month.

Payoff date

Enter your first payment month and get the exact month and year the loan is paid off.

Linked down payment fields

Type a dollar amount or a percentage — the other updates instantly, so testing 10%, 20%, or 25% down takes seconds.

CSV export

Download the current yearly or monthly schedule as a CSV file for your records or a lender.

Frequently asked questions

How is the monthly mortgage payment calculated?
The principal and interest portion uses the standard fixed-rate formula: M = P times r(1+r)^n divided by ((1+r)^n minus 1), where P is the loan amount, r is the monthly interest rate, and n is the number of payments. Property tax and insurance are divided by 12 and added, along with monthly HOA dues.
Does this include PMI (private mortgage insurance)?
No. PMI is typically required when the down payment is below 20%, and costs vary by lender and credit score, so it is not included in the estimate. If your down payment is under 20%, expect the real monthly cost to be higher by roughly $30 to $70 per $100,000 borrowed.
Why does the schedule show so much interest early on?
Interest is charged on the remaining balance, so early payments are mostly interest — on a typical 30-year loan, the first several years barely move the principal. The amortization table shows this shift payment by payment.
How much can I save by paying extra each month?
Even $100 to $200 extra per month toward principal can cut years off a 30-year loan and save tens of thousands in interest. Re-run the calculator with a shorter term to approximate the effect, or check whether your lender applies extra payments to principal.
Is the interest rate here the same as APR?
No. This calculator uses the note rate — the rate charged on the balance. APR (annual percentage rate) also folds in lender fees and points, so it is usually slightly higher. Use this tool for the payment estimate and your lender’s Loan Estimate for the APR.
How accurate are the tax and insurance estimates?
Property tax rates vary widely by county — 1.2% of the home price per year is a common starting point, but check your county assessor for the real figure. Homeowners insurance around $150 per month is typical, though quotes vary by state and coverage.
Is my data sent anywhere?
No. All calculations run locally in your browser with JavaScript. Nothing is uploaded, stored, or shared.

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