Mortgage Calculator
Estimate fixed-rate mortgage payments, taxes, insurance, PMI, HOA, and financed fees. See the payment breakdown, loan-to-value ratio, and amortization schedule.
Enter your figures or load an illustrative example, then select Calculate.
Payment = P × r ÷ (1 − (1 + r)−n), where P = financed principal, r = nominal annual rate ÷ payments per year, and n = payment periods. At 0% interest, payment = P ÷ n. Financed principal = home price − down payment + financed loan fees + financed closing costs. Loan-to-value = financed principal ÷ home price × 100%.
These are fixed-rate planning estimates. Currency changes the display only. Lenders may use different compounding, day-count, fees, or rounding conventions. This model uses equal periods and no extra payments. Calculations stay in this browser and are not saved.
How to use Mortgage Calculator
- Enter the property price, down payment, nominal annual interest rate, and term.
- Optionally enter financed fees and annual estimates for tax, insurance, PMI, and HOA.
- Calculate the payment breakdown and LTV, then review or export the loan schedule.
What is Mortgage Calculator?
A mortgage estimate separates loan principal and interest from other ownership costs. This tool uses your entered fixed-rate assumptions and optional fees. Annual tax, insurance, PMI, and HOA estimates are spread across payment periods; none are inferred from your location or automatically added based on loan-to-value.
- Amount- or percentage-based down payment
- Explicit financed fees and optional annual costs
- Principal-and-interest breakdown and LTV
- Amortization schedule and full CSV export
A model with explicit costs
Optional costs default to zero and stay fixed throughout the estimate. Actual taxes, insurance, HOA charges, or PMI may change. Annual costs are allocated across periods with cent adjustments so their totals preserve the amounts entered. Loan calculations retain decimal precision internally; rounding and cent allocation happen when producing the displayed schedule and totals. The tool does not forecast property prices, refinancing, or lender approval.
A practical example
$300,000 home · $60,000 down 30 years · 5% annual rate · monthly
$240,000 base principal Regular principal and interest approximately $1,288.37/month 80% loan-to-value before financed fees
Frequently asked questions
Does the tool automatically add PMI?
No. PMI is a user-entered annual estimate. The calculator does not determine eligibility, cancellation rules, or whether a lender requires mortgage insurance.
Do financed fees affect interest?
Yes. Fees explicitly included in the loan increase its principal and therefore affect payments and interest. They are shown separately from the property price and down payment.
Does changing currency convert the loan?
No. Currency controls labels and formatting only. Enter all amounts in the same currency; no exchange rates are used.