Enter each amount, rate, and time period. The result updates automatically. Review the breakdown to compare the main estimate with the supporting planning figures.
Mortgage Calculator
Estimate a monthly mortgage payment, total interest, cash needed at closing, and the effect of an extra payment.
Enter your assumptions
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Result
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Monthly housing cost
Loan principal—
Principal and interest—
Total monthly housing payment—
Estimated total interest—
Principal and interest use the standard fixed-rate amortization formula; tax, insurance, and extra principal are added separately.
What the result means
The main result summarizes the calculation using your current inputs. The supporting figures show the components and useful comparisons.
This estimate is for planning and education. Investment returns, lending terms, taxes, fees, and actual cash flows can differ.
A $320,000, 30-year loan at 6.5% has a principal-and-interest payment of roughly $2,023.
What assumptions does this calculator use?
It applies the values shown in the input panel and compounds or amortizes them at the stated interval.
Can I enter decimal values?
Yes. Decimal amounts and rates are supported where they are meaningful.
Are taxes and fees included?
Only when an input explicitly asks for them. Add outside costs separately when planning.
Why might an actual result differ?
Market returns, payment timing, rounding, taxes, and provider rules can change real outcomes.
How should I use the result?
Treat it as a planning estimate, then compare it with statements, quotes, or professional advice.