Free online calculator
Mortgage Calculator
Estimate monthly mortgage payment, total interest, and total repayment amount.
Quick Answer
How It Works
Uses a standard amortization formula based on fixed monthly payments and constant annual interest.
- Enter home price, down payment, annual interest rate, and term.
- Review estimated monthly principal+interest payment.
- Use total paid and total interest for planning scenarios.
Examples use USD-style formatting. Tax rates, fees, and legal rules vary by country and change over time — treat results as estimates and confirm important numbers with a qualified professional.
Interactive Calculator
Loan principal: 280000.00
Monthly payment (P&I): 1769.79
Total interest: 357124.57
Example Use Case
A 300,000 loan at 6.5% for 30 years yields a monthly payment around 1,896 before taxes and insurance.
Detailed Guide
Mortgage planning is strongest when users separate principal-and-interest from full housing cost. The monthly payment shown here is a core building block, but real ownership includes taxes, insurance, maintenance, and sometimes association fees. Ignoring these layers leads to optimistic affordability assumptions.
Rate differences that look small can create large lifetime cost changes on long terms. Testing multiple rate scenarios gives better intuition than relying on one quote. This is especially important in volatile markets where refinancing expectations may or may not materialize.
Down payment size also changes risk profile beyond payment amount. Larger down payments can reduce monthly obligations and financing costs, but they also affect liquidity and emergency reserves. The best decision is usually a balance between payment comfort and retained cash safety.
A practical approach is to compare at least three scenarios: conservative, expected, and stretched. This makes decision-making more resilient and helps avoid selecting a home budget that works only under ideal assumptions.
Assumptions and Limits
Estimate excludes property tax, homeowners insurance, PMI, HOA fees, and lender-specific costs.
Common Mistakes to Avoid
- Comparing monthly principal+interest to all-in housing cost.
- Ignoring closing costs and recurring fees.
- Using teaser rates instead of expected long-term rate.
FAQ
Can I use this calculator for free?
Yes. This tool is free and designed for practical day-to-day decisions.
Why might results differ from another website?
Differences usually come from rounding rules, assumptions, or region-specific formulas.
Is this suitable for legal or financial advice?
No. Treat outputs as guidance and validate with qualified professionals for final decisions.
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How we choose formulas and check results: Methodology · Last reviewed 2026-07-25