Home Loan Prepayment: Reduce EMI or Tenure? Which Saves More

The short answer

When you part-prepay a home loan, choosing to reduce the tenure and keep the same EMI saves far more interest than reducing the EMI. In the example below, a ₹3 lakh prepayment on a ₹30 lakh, 8.5%, 20-year loan saves about ₹2.68 lakh of interest if you lower the EMI, but about ₹7.92 lakh if you keep the EMI and finish 41 months earlier. Lower EMI is still the right choice if your monthly budget is tight. You can test both options with the EMI Calculator.

What happens when you prepay

A prepayment goes straight to the outstanding principal. Interest for every later month is charged on that smaller balance. The lender then gives you two ways to use the saving:

• Reduce EMI: the remaining tenure stays the same and the EMI is recalculated on the lower balance.
• Reduce tenure: the EMI stays the same, so more of each payment goes to principal and the loan ends sooner.

Both options cut your interest, but the second one keeps paying down principal at the old, higher speed, which is why it saves more.

Worked example

Assume:

• Loan: ₹30,00,000 at 8.5% for 20 years (240 months)
• EMI: ₹26,034.70
• After 3 years (36 EMIs), the outstanding principal is ₹28,04,580
• You prepay ₹3,00,000, so the new balance is ₹25,04,580 with 204 months left

All figures were calculated with the standard reducing-balance EMI formula, the same one the EMI Calculator uses.

| No prepayment	Reduce EMI	Reduce tenure
Monthly EMI	₹26,035	₹23,250	₹26,035
Months remaining	204	204	about 163
Interest still to pay	₹25,06,498	₹22,38,383	₹17,14,715
Interest saved by prepaying	—	₹2,68,115	₹7,91,783

The same ₹3 lakh saves almost three times as much when you shorten the loan. You also become debt-free about three and a half years earlier.

How to check your own numbers with the EMI Calculator

The calculator works out an EMI and a month-by-month amortization schedule from three inputs: loan amount, annual interest rate, and tenure in months or years. It does not have a prepayment button, but you can model both options in a few steps.

Step 1: Find your current outstanding balance

Use your lender's latest statement, or rebuild it: enter your original loan amount, rate and tenure, click Calculate EMI, open the amortization schedule, and read the Balance column for the month you will prepay. In the example, month 36 shows about ₹28,04,580. (The schedule assumes the rate never changed; if your floating rate has moved, use the lender's figure.)

Step 2: Model "reduce EMI"

Subtract the prepayment from the balance: ₹28,04,580 − ₹3,00,000 = ₹25,04,580.

Enter ₹25,04,580 as the loan amount, keep 8.5%, and enter the remaining months (204).

The new EMI shows as ₹23,249.82, and Total Interest shows what you will still pay.

Step 3: Model "reduce tenure"

Keep the same new balance and rate.

Try shorter tenures in months until the EMI is just at or below your current EMI. At 163 months the EMI is ₹25,954.80, just under ₹26,034.70.

That tells you the loan will close in roughly 163 months instead of 204. The lender's exact figure may differ by a month because the final payment is usually smaller than a full EMI.

Step 4: Compare

Subtract each option's Total Interest from the no-prepayment figure (your old EMI × remaining months − current balance). The difference is your interest saved.

Which option should you choose?

Reduce tenure if:

• You can comfortably keep paying the current EMI.
• Your goal is to save the most interest and close the loan sooner.
• You are already many years from retirement and want the loan gone before then.

Reduce EMI if:

• Your monthly cash flow is tight or your income is uncertain.
• You want a lower fixed commitment, for example before a planned career break.
• You plan to invest the monthly difference instead. Whether that beats the loan rate depends on returns you cannot know in advance.

A middle path also works: choose reduce tenure, and if money gets tight later, ask the lender about reducing the EMI then. Lenders have their own processes for this, so check before you rely on it.

Do lenders charge for prepayment?

For loans in India, the Reserve Bank of India's Pre-payment Charges on Loans Directions, 2025 say regulated lenders must not levy pre-payment charges on floating-rate loans taken by individuals for non-business purposes, with or without co-borrowers. This applies to part or full prepayment, irrespective of where the money comes from, with no minimum lock-in period. The Directions apply to loans sanctioned or renewed on or after 1 January 2026.

For fixed-rate loans, charges, if any, follow the lender's own policy, and they must be disclosed in the sanction letter, loan agreement and Key Facts Statement. Loans taken before 2026 were already covered by earlier RBI instructions for floating-rate individual loans, but check your loan agreement for the exact terms.

Practical tips before you prepay

• Ask the lender to confirm in writing which option they applied. Some lenders reduce tenure by default; others reduce the EMI.
• Keep an emergency fund. Money paid into a home loan is hard to get back quickly. It is sensible to keep several months of expenses aside before prepaying.
• Prepay earlier rather than later. In the first years of a loan, most of each EMI is interest, so a prepayment then removes more future interest. See how much of your EMI is interest.
• Check the tax angle if you use the old regime. Prepaying lowers the interest you pay each year, which can reduce any interest deduction you claim. The saving on interest is usually much larger than the tax benefit lost, but run your own numbers.
• Small regular prepayments add up. Even one extra EMI a year shortens a 20-year loan noticeably. Model it by subtracting the extra amount from the balance each year.

Common mistakes

• Comparing EMIs instead of total interest. A lower EMI feels like a win but can hide a smaller saving.
• Using the original loan amount. Always start from the current outstanding balance, not the amount you borrowed.
• Forgetting rate changes. If your floating rate has changed, use the current rate in the calculator.

If you are still choosing a loan length, 15 vs 20 vs 30-year home loan tenures compares the EMI and total interest for each.

This guide explains the general rules and is not tax advice.