Reducing tenure vs reducing EMI on a prepayment

When you make a lump-sum prepayment on a loan, most lenders let you choose what happens next: keep your EMI the same and finish the loan sooner, or keep your remaining tenure the same and pay a smaller EMI each month. Both use the exact same prepaid amount — but they don’t save you the same amount of interest.

The two options

• Reduce tenure — your EMI stays exactly what it was; the loan simply finishes earlier than originally scheduled
• Reduce EMI — your remaining tenure stays exactly what it was; your monthly instalment drops instead

Why reducing tenure wins on total interest

Interest is charged every month on whatever principal is still outstanding. Reducing tenure keeps your payment at its original, higher level, which pays down that outstanding principal faster — so there’s simply less time left for interest to accrue on it. Reducing EMI does the opposite: it lightens each payment but leaves the loan running for the same number of months, so the balance lingers longer and accumulates more interest along the way, even though you handed over the identical ₹5,00,000 up front.

When reducing EMI makes more sense

The math favours reducing tenure, but math isn’t the only consideration. If your monthly budget is genuinely tight — a job change, a new dependent, rising expenses — the immediate relief of a lower EMI can matter more than the extra interest saved, especially if that relief is what keeps you from missing a payment altogether. It’s a legitimate reason to choose reducing EMI, just not the default one.

The exact numbers depend on your own loan balance, rate, and remaining tenure — run them through the calculator below rather than assuming the example above applies directly to your situation. The core reducing-balance formula behind both options is the same one used by the EMI and Personal Loan calculators.