A mortgage is a long-term loan used to purchase real estate, where the property itself serves as collateral. You repay it through monthly payments that include both principal and interest over a fixed tenure.

How is a mortgage payment calculated?

Mortgage payments are calculated using the standard amortisation formula: EMI = P × r × (1+r)^n / ((1+r)^n – 1), where P is the loan principal, r is the monthly interest rate, and n is the total number of monthly payments.

Mortgage Calculator — Monthly Payment & Interest

Mortgage Details

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Monthly Payment 0

Loan Amount 0

Down Payment 0

Total Interest 0

Total Payment 0

Amortisation Schedule

Year	Opening Balance	EMI Paid	Principal Paid	Interest Paid	Closing Balance

What is a Mortgage Calculator?

A mortgage calculator is a free online tool that estimates your monthly mortgage payment, total interest payable, and year-wise amortisation schedule based on the home price, down payment, interest rate, and loan tenure. It helps you plan your home purchase budget and compare mortgage offers from different lenders before committing.

A mortgage is a long-term loan used to purchase real estate, where the property itself serves as collateral. Borrowers repay the loan through fixed monthly instalments that include both principal and interest. Most mortgages have a fixed interest rate, though adjustable-rate mortgages (ARMs) are also available.

Key Features of This Mortgage Payment Calculator

Instant Payment Calculation: Get your exact monthly mortgage payment based on home price, down payment, rate, and tenure.
Down Payment Impact: See how different down payment amounts change your loan amount, monthly payment, and total interest.
Total Interest Display: View the cumulative interest paid over the entire mortgage term.
Year-wise Amortisation Schedule: A detailed table showing opening balance, EMI paid, principal paid, interest paid, and closing balance for each year.
Interactive Chart: Visualise the principal vs interest breakdown over the life of the mortgage.
Multiple Number Formats: Toggle between Exact Value, Lakhs/Crores, and Million/Billion display formats.

How to Calculate Mortgage Payments — The Formula

Loan Amount = Home Price − Down Payment

Monthly Payment = P × r × (1 + r)ⁿ / ((1 + r)ⁿ − 1)

Total Payment = Monthly Payment × n

Total Interest = Total Payment − Loan Amount

Where:

P = Loan principal (Home Price − Down Payment)
r = Monthly interest rate (Annual Rate ÷ 12 ÷ 100)
n = Total number of monthly payments (Years × 12)

How to Use This Mortgage Calculator — Step-by-Step

Home Price: Enter the total price of the property you wish to buy (e.g., 50,00,000).
Down Payment: Enter the upfront payment you plan to make, typically 10–20% of home price (e.g., 10,00,000).
Annual Interest Rate: Enter the rate offered by your lender (e.g., 8.5%). Mortgage rates typically range from 7% to 10%.
Loan Tenure: Enter the repayment period in years, from 1 to 30 years (e.g., 20 years).
Click “Calculate Mortgage”: View monthly payment, loan amount, down payment, total interest, total payment, amortisation schedule, and chart.

Mortgage Calculation — Practical Examples

Example 1 — 50 Lakh Home at 8.5% for 20 Years:

Home Price: 50,00,000 | Down Payment: 10,00,000 | Rate: 8.5% | Tenure: 20 years

Loan Amount = 40,00,000. Monthly Payment ≈ 34,713. Total Interest ≈ 43,31,072. Total Payment ≈ 83,31,072.

Example 2 — Higher Down Payment Impact:

Same home but with 15,00,000 down payment (30%). Loan = 35,00,000.

Monthly Payment drops to ≈ 30,374. Total Interest drops to ≈ 37,89,688 — saving approximately 5,41,384 in interest.

Example 3 — Shorter Tenure Saves Interest:

Home Price: 50,00,000 | Down Payment: 10,00,000 | Rate: 8.5% | Tenure: 15 years (instead of 20)

Monthly Payment rises to ≈ 39,389 (higher), but Total Interest drops to ≈ 30,90,032 — saving approximately 12,41,040 compared to the 20-year option.

Real-World Use Cases — When to Use a Mortgage Calculator

Before House Hunting: Know your monthly commitment so you can search within a realistic budget.
Comparing Lender Offers: Enter different rates from multiple banks to identify the cheapest mortgage offer.
Deciding Down Payment: Test different down payment amounts to find the best balance between upfront cash and monthly payment.
Tenure Selection: Compare 15-year vs 20-year vs 30-year mortgages to see the trade-off between monthly payment and total interest.
Rent vs Buy Analysis: Compare your expected mortgage payment against current rent to make the rent-vs-buy decision.
Refinancing Decision: If rates have dropped, calculate new payments to see if refinancing saves money.

Understanding Your Mortgage Results

Monthly Payment: The fixed amount you pay every month — includes both principal and interest. This stays constant for fixed-rate mortgages.
Loan Amount: Home Price minus Down Payment — the actual amount financed by the lender.
Down Payment: Your upfront cash contribution. A larger down payment reduces the loan and total interest.
Total Interest: The cumulative interest paid over the entire mortgage term. On long-tenure mortgages, this can exceed the original loan amount.
Total Payment: Monthly Payment × number of months — the complete amount flowing from you to the lender.

Tips to Save on Mortgage Interest

Larger Down Payment: Paying 20% or more upfront eliminates the need for mortgage insurance and reduces total interest significantly.
Shorter Tenure: A 15-year mortgage has a higher monthly payment than 30 years but saves 40–50% in total interest.
Compare Multiple Lenders: Even a 0.25% rate difference on a 40 lakh loan saves several lakhs over 20 years.
Make Prepayments: Annual lump-sum payments towards principal reduce tenure and save substantial interest.
Improve Your Credit Score: Borrowers with scores above 750 get preferential rates, saving thousands annually.
Consider Refinancing: If market rates drop 0.5% or more below your current rate, refinancing can yield significant savings.
Avoid Adjustable-Rate Risk: If you plan to stay long-term, a fixed-rate mortgage protects against future rate increases.

Common Mistakes to Avoid When Taking a Mortgage

Choosing the longest tenure for lowest payment: This minimises monthly outgo but maximises total interest — you may pay more in interest than the loan itself.
Ignoring total cost: Comparing only monthly payments without considering total interest and fees.
Minimal down payment: Lower down payment means higher loan amount, higher monthly payment, and significantly more total interest.
Not shopping around: Taking the first offer without comparing at least 3–4 lenders.
Forgetting closing costs: Registration fees, stamp duty, legal charges, and inspection costs add 2–5% to the purchase price.
Over-borrowing: Qualifying for a large mortgage doesn’t mean you should take it all. Keep payments under 30–35% of income.

Frequently Asked Questions About Mortgages

Q: What is the difference between EMI and mortgage payment?

A: They are essentially the same concept. EMI (Equated Monthly Instalment) is the term commonly used in India, while “mortgage payment” is the standard term in Western countries. Both refer to the fixed monthly payment that includes principal and interest.

Q: How much down payment should I make?

A: Financial advisors recommend at least 20% down payment. This reduces your loan amount, eliminates mortgage insurance requirements, and saves substantial interest over the loan term.

Q: Fixed-rate vs adjustable-rate mortgage — which is better?

A: Fixed-rate provides predictable payments and protects against rate increases. Adjustable-rate (ARM) starts lower but can increase over time. Choose fixed if you plan to stay long-term; ARM may suit short-term ownership.

Q: Can I pay off my mortgage early?

A: Yes. Most lenders allow early repayment. Some may charge a prepayment penalty (1–3%), but many home loans allow prepayment without penalty. Check your loan agreement before making extra payments.

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