How Loan Prepayment Works

What prepayment does

A prepayment is any repayment beyond your scheduled EMI. Because interest is charged on the outstanding balance, cutting that balance early reduces all the interest that would have accrued on it. The earlier in the loan you prepay, the greater the saving, since early balances are large.

Tenure vs EMI reduction

After a prepayment you can usually keep the EMI the same and finish the loan sooner (reduce tenure), or keep the tenure and lower the EMI. Reducing tenure generally saves more total interest because you stop paying interest earlier, while reducing EMI improves monthly cash flow.

Illustration: ₹2 lakh prepaid in year one of a ₹30 lakh loan

A ₹30,00,000 home loan at 9% for 20 years has an EMI of about ₹26,992 and total interest of roughly ₹34.8 lakh if left to run. Suppose you pay a one-time ₹2,00,000 after the 12th EMI and keep paying the same EMI. The loan now closes after about 205 months instead of 240, and total interest falls to about ₹27.2 lakh — a saving of roughly ₹7.6 lakh of interest and 35 months from a single ₹2 lakh payment.

The same ₹2 lakh paid in year 15 would save far less, because by then most of each EMI is already principal and little interest remains to avoid.

Reduce tenure or reduce EMI?

Lenders usually offer two ways to apply a prepayment. Reducing the tenure (same EMI, fewer months) saves the most interest. Reducing the EMI (same end date, smaller monthly payment) frees up monthly cash but saves less. If your budget is comfortable, choose tenure reduction; if the EMI is a strain, use the prepayment to lower it.

Before you prepay

• Keep an emergency fund — prepaid money cannot be withdrawn later.
• Check charges: the RBI prohibits foreclosure/prepayment penalties on floating-rate loans to individuals, but fixed-rate loans may carry them.
• Weigh alternatives honestly: prepaying a 9% loan is a certain 9% "return"; comparing it with an uncertain market return is not like for like.
• Ask the lender for a revised amortisation schedule after the payment and check it against the Loan Prepayment calculator.

Before you prepay

• Check whether prepayment charges apply to your loan type.
• Keep an emergency buffer — do not prepay with money you may need.
• Compare the interest saved against returns from alternative uses of the money.

Use the Loan Prepayment Calculator to see the interest and months saved for your own loan; the EMI calculator shows the full amortisation schedule so you can see how much interest each period carries.