Mortgage Calculator
Advanced mortgage calculator — amortization schedule, charts, all currencies, extra payment savings
Total Cost Breakdown
What is Mortgage Calculator?
A mortgage calculator helps homebuyers and property investors understand the true cost of a home loan. Unlike a simple EMI calculator, an advanced mortgage calculator factors in down payment, property taxes, home insurance, and extra payments — giving you a comprehensive picture of monthly housing costs and long-term interest savings.
A mortgage is typically the largest financial commitment most people make. Understanding the numbers before signing is essential: the monthly principal and interest payment is just one part of the cost. Property taxes, homeowner's insurance, and optional mortgage insurance (PMI) are additional components that can add hundreds to your monthly payment. Extra payments — even small additional amounts each month — can dramatically reduce total interest paid and shorten the loan term.
Altairys's Mortgage Calculator supports 35+ global currencies, computes the full amortisation schedule, shows the loan-to-value (LTV) ratio, calculates how much you save by making extra payments, and visualises the data with three chart types: a donut chart showing the payment breakdown, a stacked bar chart of annual principal vs. interest, and a line chart of outstanding balance over time. All calculations run in your browser with no data sent to any server.
How to Use Mortgage Calculator
- Enter home price and down payment
Set the property price and how much you're putting down as a deposit.
- Set interest rate and term
Enter the annual interest rate and loan duration in years.
- Add taxes and insurance
Optionally include monthly property tax, home insurance, and extra payments.
- Explore charts and schedule
View the payment breakdown, annual charts, and full month-by-month amortisation table.
Key Benefits
Calculate mortgages in USD, EUR, GBP, INR, AED, and 30+ other currencies.
Donut, stacked bar, and balance line charts for complete visual understanding.
Month-by-month breakdown of principal, interest, and remaining balance.
See exactly how much interest you save by making additional payments.
Frequently Asked Questions
Mortgage specifically refers to a property-backed loan. EMI is a general term for any equated monthly instalment loan. Mortgage calculators typically include additional housing costs like taxes and insurance.
LTV is the loan amount as a percentage of the property value. A 20% down payment gives an 80% LTV. Lenders use LTV to assess risk — loans above 80% LTV often require PMI.
Even small extra monthly payments have a significant compound effect. An extra ₹5,000/month on a 20-year mortgage can save years of payments and lakhs in interest.
The base payment covers principal and interest (P&I). The tool also calculates PITI — principal, interest, taxes, and insurance — as the total monthly housing cost.
Yes — 35+ currencies are supported including INR, USD, EUR, GBP, AED, SGD, AUD, CAD, and more.