Total Interest Payable on a Home Loan: A Worked Example
Published 13 October 2026 · 6 min read · Clean EMI Editorial
Ask most borrowers what their home loan will cost and they quote the EMI. The real cost is the total of all EMIs paid over the tenure, minus the amount borrowed. This guide works through one complete example, a ₹45 lakh loan over 20 years, so you can repeat the steps with any loan offer. Interest is not the only cost of a loan, but it is usually the largest. Because the total depends so heavily on the tenure, a small change in the number of years can move the figure by a large amount. Working through the total once, on paper or in a spreadsheet, shows whether the loan fits your long-term plans as well as your monthly budget.
Part of the Home Loan guide series.
Three inputs drive the total
The total interest depends on three figures: the principal, the annual rate and the tenure in months. The rate sets how much each month’s interest costs, and the tenure sets how many months that cost applies. Change any one of the three and the total changes, which is why two offers with the same EMI can still differ in total cost.
Worked example: ₹45 lakh over 20 years
This example uses an illustrative rate of 8.5% p.a., which is not a bank quote. The steps are below.
- EMI: ₹39,052 a month, from the reducing balance formula over 240 months.
- Total paid: ₹39,052 × 240 = ₹93,72,480.
- Total interest: ₹93,72,480 minus ₹45,00,000 = ₹48,72,480.
The interest is larger than the loan itself. About 52% of everything paid over the 20 years is interest, and the principal is only the remaining 48%.
Why the total can exceed the loan
A long tenure keeps the balance outstanding for many years, so interest builds up on it month after month. The EMI looks manageable because it is spread over 240 months. The total cost shows what that spreading costs. Use the tenure and total interest article to see how the cost changes with the length of the loan.
Costs that are separate from interest
Processing fees, legal and valuation charges, insurance and any stamp duty are not part of the interest calculation. They add to the cash you need at the start. Check the bank’s schedule of charges so you can add them to your budget. The EMI calculator is useful for the interest figure, but it does not include these charges.
Steps to repeat with any offer
- Note the loan amount, the annual rate and the tenure in years from the sanction letter.
- Calculate the EMI using the bank’s stated figure or a calculator, and confirm it matches.
- Multiply the EMI by the number of months.
- Subtract the principal to get the total interest.
You can compare offers on the home loan page, and the bank’s profile is at Punjab & Sind Bank. The final decision rests with the lending bank.
Frequently Asked Questions
Is total interest the same as the EMI multiplied by the years?
Only if you multiply by months. EMI times the number of monthly instalments gives the total paid, and subtracting the principal gives the interest.
Does prepayment change the total interest?
Yes. Prepaying part of the loan reduces the balance on which interest is charged, which lowers the total. Check the bank’s terms on prepayment before you pay.
Are processing fees included in the interest figure?
No. Fees and charges are separate. Check the bank’s schedule of charges to see what applies to your loan.
Useful free tools
- Free Credit Analyzer — Upload your CIBIL report and see which loans you may be eligible for, with an indicative EMI.
- Check my Loan Eligibility — Answer a few questions and see how your application would be routed to a PSU bank.
- Home Loan Balance Transfer Calculator — Compare your current EMI with a lower-rate loan over the same remaining tenure.
- Credit Score Enhancer — Practical steps to improve your CIBIL score before you apply for a loan.
Ready to check your eligibility?
No fee to apply. CIBIL score of 700 or above required.