Loan Prepayment Calculator: Save Interest & Close Loan Faster

Prepayment means making extra payments towards your loan over and above your regular Equated Monthly Installment (EMI). Because these extra payments go entirely towards reducing your outstanding principal, they instantly decrease the interest charged in all future months.

For a typical ₹50 Lakh home loan at 8.5% interest over 20 years, making just one extra payment of ₹43,000 every year can shave 4 full years off your loan tenure and save you roughly ₹12 Lakhs in interest.

In the early years of a home loan, up to 80% of your EMI goes purely toward paying interest. Very little of your actual loan amount (principal) is reduced.

When you make a prepayment, it bypasses the interest and hits the principal directly. With a smaller principal, the next month's interest is calculated on a lower amount. If you keep your regular EMI the same, more of it automatically goes toward reducing the principal next month. This creates a snowball effect that crushes your loan timeline.

Let's look at a ₹50 Lakh loan for 20 years at 8.5%. If you pay it normally, you will pay ₹43,397 per month, resulting in a total interest of ~₹54 Lakhs over 20 years.

Scenario 1: You add ₹5,000 extra to your EMI every month. Result: Your loan closes in just 14.5 years, and you save ₹17 Lakhs in interest.

Scenario 2: You make a lumpsum prepayment of ₹1 Lakh every year (e.g., from an annual bonus). Result: Your loan closes in less than 12 years, saving you over ₹26 Lakhs in interest.

Many borrowers hesitate to prepay fearing hidden bank charges. However, per RBI guidelines issued post-2014, banks and NBFCs cannot charge any prepayment or foreclosure penalty on floating-rate home loans for individual borrowers.

If you have a fixed-rate loan or a personal loan, lenders might still charge a penalty (usually 1% to 4% of the prepaid amount). Always check your loan sanction letter, but calculate the math—often, paying a 2% penalty to save 8.5% interest for the next 15 years is still a highly profitable move.

When you make a lumpsum prepayment, the bank will ask if you want to lower your monthly EMI or reduce your loan tenure. Always choose 'Reduce Tenure' if your cash flow permits.

Reducing the tenure is what actually saves you massive amounts of interest. Reducing the EMI provides monthly budget relief but extends the life of the loan, negating most of the compounding benefits of your prepayment.