Mortgage Calculator
Monthly payment, total interest and smart tips
How Mortgage Payments Work
A mortgage payment covers both principal (the amount borrowed) and interest (the cost of borrowing). Early payments are mostly interest, while later payments go more toward principal.
Mortgage Formula
M = P[r(1+r)^n] / [(1+r)^n - 1] where M is monthly payment, P is principal, r is monthly rate, and n is total payments.
How to Save on Your Mortgage
A larger down payment reduces your loan amount and eliminates PMI. Choosing a 15-year term over 30-year saves significant interest. Even one extra payment per year can cut years off your mortgage.
Look beyond the monthly mortgage payment
A mortgage payment estimate is helpful, but the real cost of home ownership may also include taxes, insurance, maintenance, association charges, and future rate changes. Always compare the calculator result with the complete loan offer from the lender.
Mortgage Calculator: practical guide
The Mortgage Calculator is built for people who want a fast answer without losing context. It keeps the calculation simple, shows the result clearly, and helps you understand what the number means before you use it in a real decision.
This calculator helps you understand borrowing costs before you commit. It can show how rate, term, loan amount, and extra payments affect monthly payments and total interest.
What is the best way to use the Mortgage Calculator?
Enter the values carefully, review the units, and use the result as a reliable reference point. The Mortgage Calculator is most useful when you compare scenarios or repeat the calculation with consistent inputs.
Is the Mortgage Calculator accurate?
The calculator follows standard calculation logic, but accuracy depends on the values you enter and the assumptions behind the formula. For important finance decisions, use it as guidance and verify the result with a trusted source.
How mortgage payments are calculated
A mortgage is a secured loan where the property being purchased serves as collateral. Monthly mortgage payments are calculated using the same EMI formula used for any amortising loan, applied to the principal loan amount at the agreed interest rate over the loan term.
Monthly Payment Formula: M = P × [R(1+R)^N] ÷ [(1+R)^N – 1]
- M = Monthly payment
- P = Principal loan amount
- R = Monthly interest rate (Annual rate ÷ 12 ÷ 100)
- N = Total number of payments (years × 12)
Example: Home loan of $4,000,000 at 8.5% annual interest for 20 years: R = 0.007083, N = 240. Monthly payment = $34,694. Total repaid over 20 years = $8,326,560. Total interest = $4,326,560.
Down payment and loan-to-value ratio
Most global banks require a minimum down payment of 10–20% of the property value. The remaining 80–90% is financed through the home loan. This ratio is called the Loan-to-Value (LTV) ratio. A lower LTV (larger down payment) typically results in a lower interest rate and smaller loan amount, reducing both monthly EMI and total interest.
- Property value $6,000,000 with 20% down payment ($1,200,000): Loan = $4,800,000
- Same property with 10% down payment ($600,000): Loan = $5,400,000
- The larger down payment saves $600,000 in principal, reducing monthly EMI and saving approximately $6–8 hundred thousand in interest over 20 years
Fixed vs floating home loan rates
- Fixed rate: Rate stays constant for the entire tenure or a fixed period (typically 2–5 years). Predictable EMI but usually 0.5–1% higher than floating at time of origination
- Floating rate: Linked to benchmark lending rate or benchmark lending rate (Repo Rate Linked Lending Rate). Changes with central bank policy rate decisions. Currently, most home loans are floating rate
Floating rate loans benefit when central bank cuts rates and cost more when central bank raises rates. Given the historical rate cycle, floating rates have generally been advantageous for long-tenure borrowers over 15–20 year periods.
How prepayment reduces total interest
Making additional payments toward the principal is one of the most effective ways to reduce total interest on a home loan. Most home loans allow prepayment without penalty (especially floating rate loans).
Example: $4,000,000 loan at 8.5% for 20 years (EMI = $34,694):
- Without prepayment: Total interest = $4,326,560 over 20 years
- With $100,000 prepayment in year 2: Saves approximately $280,000 in interest and closes the loan ~10 months early
- With $5,000 extra monthly from start: Saves approximately $1,200,000 in interest and closes 5 years early
Tax benefits on home loans
- retirement/savings deduction: Principal repayment up to $150,000 per year is deductible from taxable income
- mortgage interest deduction: Interest paid on home loan up to $200,000 per year is deductible (for self-occupied property)
- first-time homebuyer deduction: Additional $150,000 deduction on interest for first-time home buyers (subject to property value conditions)
Frequently asked questions about mortgages
What credit score is needed for a home loan? Most banks require a minimum credit score of 650–700 for home loan approval. Scores above 750 qualify for the best interest rates. A score below 600 typically results in rejection or very high rates.
Can I get a home loan with an existing loan? Yes, but your total EMI obligations (existing + new) should not exceed 40–50% of your monthly income. Lenders use Fixed Obligation to Income Ratio (FOIR) to assess this.
What is the maximum home loan tenure? Most global banks offer up to 30 years tenure. The tenure is limited by the borrower's age at loan maturity — most lenders require the loan to close before age 60–70.
Should I choose a shorter or longer mortgage tenure? Shorter tenure: higher EMI, less total interest, faster debt freedom. Longer tenure: lower EMI, more total interest, better monthly cash flow. Choose the shortest tenure where the EMI remains comfortably within 35–40% of your monthly income.