Monthly vs Yearly Prepayment: Which Saves More?

For a ₹50L loan at 8.5% for 20 years, with a total annual prepayment budget of ₹60,000:

The reason is simple: money that reduces principal today stops accruing interest from today. If you prepay ₹5,000 in January, February, March… each payment reduces the principal base on which interest is calculated for the rest of the year.

With a yearly lump sum, the ₹60,000 sits idle (earning at most savings account rates) for up to 11 months before being applied. During those months, interest continues accruing on the full outstanding balance.

The difference is not dramatic at ₹0.9L, but it is free money. If monthly prepayments are equally convenient, they are the better option.

• Your lender charges a fee per prepayment transaction, making 12 monthly charges more expensive than one annual fee
• Your cash flow is irregular, with a salary + annual bonus structure that makes lump sum prepayment more practical
• Your lender has a minimum prepayment threshold that makes small monthly amounts ineligible
• You prefer simplicity: one annual decision rather than monthly tracking

If your lender allows free, unlimited part-prepayments (common for floating-rate loans under current RBI rules), monthly prepayments are marginally better and require no extra effort once set up.

If lump sum annual prepayment is more practical for your income pattern, such as when funded by a yearly bonus, the difference is small. ₹13.0L saved vs ₹13.9L saved is still an excellent outcome for either approach.

Does my lender allow monthly prepayments?

Most Indian banks that have adopted the RBI's external benchmark rate regime allow part-prepayments on floating-rate loans without charges. Check your loan agreement or call your lender to confirm the frequency and minimum amount allowed.

What if I invest the ₹5,000/month and make one large prepayment later?

This can work if the investment return exceeds your loan interest rate during that period. However, this adds risk and complexity. For most borrowers, a direct monthly prepayment is simpler and equally effective.

This content is for educational purposes only and does not constitute financial advice. Consult a qualified advisor before making financial decisions.

The examples above use a typical ₹50L loan. Upload your statement to see the monthly vs yearly comparison for your exact balance and rate.