EMI Reduction Calculator

What is an EMI reduction after prepayment?

Indian banks offer two standard options when you make a prepayment on a home loan. Option A keeps the remaining tenure fixed and lowers the monthly instalment. Option B keeps the original EMI fixed and shortens the number of months you must pay it.

Both options reduce the total interest you pay over the life of the loan, but by very different amounts. The calculator above lets you model each scenario instantly with your actual loan figures.

How prepayment reduces your home loan EMI

Prepayment reduces your home loan EMI by lowering the outstanding principal that the bank uses to recompute your instalment under the same reducing-balance formula. Every rupee you pay toward principal is a rupee the bank can no longer charge interest on for the rest of the loan tenure.

The bank applies your prepayment entirely to the outstanding principal, not to interest. After applying the payment, it recalculates the EMI as if you had taken a fresh loan for the new (lower) outstanding amount, at the same interest rate, for the remaining number of months.

This is why a prepayment in the early years of a loan saves far more interest than the same amount paid in later years. When the outstanding balance is high, reducing it by Rs 5 lakh eliminates interest charges on that Rs 5 lakh for the full remaining tenure. When only Rs 8 lakh remains, the same Rs 5 lakh prepayment eliminates interest on less than two-thirds of a year.

Reduce EMI vs reduce tenure: which is better?

Reducing tenure rather than EMI saves significantly more total interest in the long run, because a shorter tenure means fewer months of interest accrual on the outstanding balance.

When you reduce EMI, you pay a lower amount each month but for exactly the same number of remaining months. The bank keeps collecting interest on the principal for the full original remaining period, just at a lower rate per month because the balance is lower. When you reduce tenure, you pay the same EMI but stop paying it sooner. Every month you eliminate from the schedule eliminates the interest that would have accumulated that month.

The right choice depends on your cash flow. If your budget is stretched and you need more breathing room every month, reducing EMI is the practical choice. If you can comfortably afford the current EMI, reducing tenure is the financially superior option in almost every scenario.

EMI reduction formula

The new EMI after prepayment is calculated using the same reducing-balance formula applied to the lower outstanding principal and the same remaining tenure.

Step 1: Calculate the original EMI

Step 2: Calculate outstanding principal after k months

Step 3: Calculate new EMI after prepayment (Option A: reduce EMI)

Step 4: Calculate new tenure (Option B: reduce tenure)

All four steps are handled automatically by the calculator above. You do not need to run these formulas manually: enter your loan details and the calculator applies them in real time.

How to reduce your home loan EMI without prepayment

You can reduce your home loan EMI without a prepayment through three main routes: a balance transfer to a lower-rate lender, a tenure extension from your existing lender, or a drop in the RBI repo rate on a floating-rate loan.

Balance transfer

A home loan balance transfer moves your outstanding loan to a new lender offering a lower interest rate. The new lender pays off your existing loan and opens a fresh loan at the reduced rate. This is worth considering when the rate difference is at least 0.5 percentage points and you have more than 5 years of tenure remaining. The Balance Transfer Savings Calculator shows the net saving after accounting for processing fees and legal charges.

Tenure extension

You can request your existing bank to extend the remaining tenure of your loan. A longer tenure reduces the monthly instalment because the same principal is spread over more months. Most banks allow this if you are below the maximum tenure limit (usually 30 years or until age 70, whichever comes first). The downside is more total interest paid.

Repo rate cuts

For floating-rate loans linked to the external benchmark (EBLR or RLLR), an RBI repo rate cut automatically passes through to your home loan rate within the quarter. Following the 125-basis-point repo rate reduction through 2025 that brought the rate to 5.25%, most floating-rate borrowers saw their effective home loan rates fall by a similar magnitude, reducing their EMI without any action on their part.

Prepayment charges and RBI rules

Per RBI circular DBOD.No.Dir.BC.28/13.03.00/2012-13, banks and housing finance companies regulated by the National Housing Bank cannot charge prepayment or foreclosure fees on floating-rate home loans, making lump-sum prepayment cost-free for most home loan borrowers in India.

The prohibition applies specifically to floating-rate loans. Fixed-rate home loans may still carry prepayment charges, typically 2 to 4 percent of the outstanding principal on the date of prepayment. If your loan is on a fixed rate, calculate whether the interest saving from the prepayment exceeds the prepayment charge before proceeding.

HFCs (Housing Finance Companies) regulated by the Reserve Bank of India since 2019 are also bound by the same prepayment prohibition on floating-rate loans. Verify with your lender before making a large prepayment that your specific loan type is covered.

How much interest does prepayment save?

A prepayment saves interest equal to the difference between the total interest you would have paid over the remaining tenure without the prepayment and the total interest you pay after it. The exact saving depends on which option you choose: reducing EMI or reducing tenure.

The interest saved figures in the Option B column are substantially larger because reducing tenure eliminates months of future interest entirely, whereas reducing EMI merely charges less interest on the same number of remaining months. Use the EMI reduction calculator above to check the exact figures for your loan amount and rate.

Worked example: Rs 50 lakh loan prepayment

For a Rs 50 lakh home loan at 8.5% per annum for 20 years with a Rs 5 lakh prepayment at origination, the original EMI is approximately Rs 43,392 per month, and the total interest without prepayment is approximately Rs 54.14 lakh.

Step 1: Original loan parameters

Step 2: Outstanding balance after 0 months

Option A: Reduce EMI (same 240-month tenure)

Option B: Reduce Tenure (same EMI Rs 43,392)

Option B saves Rs 12.15 lakh more than Option A in this scenario. The right choice depends on your monthly cash flow: if you need the Rs 4,339 monthly saving, choose Option A. If you can maintain the current EMI, Option B is the mathematically superior choice.

How to use this EMI reduction calculator

Enter your loan amount, annual interest rate, tenure, months already paid, and prepayment amount, then switch between the Reduce EMI and Reduce Tenure tabs to compare both options side by side.

1. Loan Amount: Set the original principal you borrowed (not the home price) using the slider or by clicking the displayed value to enter a precise figure.
2. Interest Rate: Enter the annual interest rate from your loan agreement. For floating-rate loans, use the current effective rate from your latest bank statement.
3. Tenure: Select the original loan tenure in years using the preset buttons (5Y to 30Y) or the slider. Use the tenure stated in your sanction letter.
4. Months Paid: Click "Prepayment details" and enter how many EMIs you have already paid. The calculator computes your current outstanding principal automatically.
5. Prepayment Amount: Enter the lump sum you plan to prepay. Switch between "Reduce EMI" and "Reduce Tenure" tabs to see both options and the corresponding interest saved.

Your inputs are saved automatically in your browser. The next time you open the calculator, it restores your last session. To check the home loan you qualify for before planning a prepayment, use the Home Loan Eligibility Calculator.

Frequently asked questions