Loan Pre-payment Calculator

Calculate how much interest and time you save by making a lump sum pre-payment on your loan.

Updated: June 2026

A loan pre-payment (or part-payment) is a lump sum amount paid in addition to your regular EMI, which directly reduces your outstanding principal. Since interest is calculated on the outstanding balance, a prepayment has a compounding benefit — every rupee of principal you eliminate today saves you years of future interest. This calculator shows you the exact rupee and time savings from any prepayment.

Why Early Prepayments Save More

Prepayments made in the first few years of a loan save dramatically more interest than the same amount prepaid in later years. This is because early in the tenure, most of your EMI goes toward interest rather than principal. By reducing the principal early, you shift the composition of future EMIs toward more principal repayment, creating a cascading effect that shortens the loan tenure significantly.

Prepayment vs Investing the Money

Should you prepay your home loan or invest the lump sum? If your home loan rate is 8.5% and your post-tax investment return (equity) is 10–12%, investing is mathematically better. However, prepayment provides a guaranteed, risk-free return equal to your loan rate. If you are risk-averse or your investment portfolio is already equity-heavy, prepayment is a sound choice. Many financial planners suggest prepaying if the loan rate exceeds 8% and you are in the 30% tax bracket.

Frequently Asked Questions

Does prepayment reduce EMI or tenure?

Both options are available. Reducing tenure while keeping the same EMI saves significantly more total interest. Reducing the EMI while keeping the same tenure improves monthly cash flow. The mathematically superior choice is reducing tenure — but reducing EMI is preferred if you need monthly liquidity.

Are there prepayment charges in India?

For floating-rate home loans: RBI mandates NO prepayment penalty. For fixed-rate home loans: lenders can charge 1–3% of the outstanding principal. For personal and car loans (always fixed-rate): 2–5% foreclosure charge is typical after 6–12 EMIs. Always check your loan agreement before prepaying.

What is the best time to make a prepayment?

The earlier in the loan tenure, the better — prepayments save more interest in year 1 than in year 15. Among calendar months, make prepayments before the EMI due date so the prepaid amount is deducted from the principal before the next month's interest is charged. Avoid prepaying in the last 1–2 years as the remaining interest is minimal.