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Home loan prepayment: cut the tenure, not the EMI

When you make a part-payment, the lender asks one question: keep the EMI and finish sooner, or keep the term and pay less each month? The answer is almost always the first, and choosing the second is expensive in a way the paperwork never shows you.

On a ₹50 lakh balance with 18 years left, prepaying ₹5 lakh: keep the EMI at ₹46,822 and the loan clears 46 months early, costing ₹34,95,103 in interest. Take the lower EMI of ₹42,140 instead and the term barely moves — and the interest bill rises to ₹46,02,250. Freeing up ₹4,682 a month costs you ₹11,07,147.

That is the whole page, really. Everything below is the detail behind it.

Why the lower EMI is the default you have to refuse

Lowering the EMI feels like the reward for prepaying — the monthly outgo drops, immediately and visibly. Shortening the tenure feels like nothing at all: the same money leaves your account next month, and the benefit is years away. Several lenders apply the EMI reduction unless you say otherwise, so the pleasant option is also the passive one.

But the interest you avoid is a function of how long the balance sits there. Cutting the term removes years of compounding; cutting the EMI removes almost none, because the balance runs down at nearly the same pace it would have anyway.

  • Smaller prepayment, same effect. ₹2 lakh on that ₹50 lakh balance still saves ₹5,30,445 by cutting the tenure rather than the EMI.
  • Different loan size, same shape. ₹3 lakh on a ₹30 lakh balance: ₹6,64,253more interest if you take the ₹2,809 monthly reduction instead of finishing 46 months sooner.

Say it explicitly, in writing, every time: “reduce the tenure, keep the EMI unchanged.” Then check the revised amortisation schedule they send back.

When the lower EMI is the right call anyway

This is a default, not a law. Take the EMI reduction if the current instalment is genuinely straining the household — a lower fixed commitment that you can reliably meet beats a shorter term you might default on. The arithmetic above assumes you can keep paying ₹46,822 comfortably. If you cannot, it does not apply to you, and there is no shame in the trade.

Prepayment charges

For a floating-rate home loan to an individual, the RBI’s 2025 Directions bar prepayment and foreclosure charges on loans sanctioned or renewed from 1 January 2026 — no lock-in, and it does not matter where the money came from. Fixed-rate loans are excluded and may still carry one, often around 2% plus GST.

The detail matters more than that summary suggests — the date condition, the fixed-rate carve-out and the lender tiering all have edges. What actually changed in the 2026 rules →

Prepay early, and the same rupee does more

On a typical 20-year home loan the first years’ EMIs are mostly interest, not principal. A prepayment made in year 2 saves far more than the same amount in year 15, because you are wiping out interest that has not been charged yet. Modest, regular part-payments made early beat one large payment made late.

The tax angle — a real but usually small offset

Under Section 24(b), you can deduct up to ₹2 lakh a year of home-loan interest on a self-occupied property (and principal repayment counts toward the ₹1.5 lakh Section 80C limit). Prepaying reduces the interest you pay, which can trim that deduction.

But do the maths before letting the tax tail wag the dog: the interest you save (at, say, 8.5%) almost always outweighs the deduction you forgo (interest × your tax slab). The tax break lowers your effective loan rate — for someone in the 30%+ bracket with interest inside the ₹2 lakh cap, an 8.5% loan behaves more like ~6% after tax — which mainly matters for the prepay-vs-invest decision below, not for whether prepaying is worthwhile at all.

That “inside the ₹2 lakh cap” qualifier is doing a lot of work, and most advice drops it. A ₹50 lakh loan at 9% pays well over double the cap in interest, so prepaying leaves you still claiming the full ₹2 lakh — you lose about half the relief you might have feared, and on a ₹75 lakh loan barely a third. How much of the ₹2 lakh benefit prepaying actually costs you →

Should you prepay, or invest the surplus?

Once you've cleared any expensive debt (credit cards, personal loans) and hold a solid emergency fund, compare your home loan's effective after-tax rate to the return you could realistically earn:

  • Prepay if you value a guaranteed, risk-free return equal to your loan rate, want to be debt-free sooner, or are close to retirement. Prepaying is certain; markets are not.
  • Invest (e.g. long-term equity/index funds) if your effective home-loan rate is low and you're comfortable with market risk over a long horizon — historically that has often beaten a ~6–8% loan, though never guaranteed.
  • Many people do both: prepay a fixed amount each year and invest the rest, which locks in guaranteed savings while keeping upside.
Unowe lets you enter your home loan (and any other debts), then shows how a given monthly or one-time prepayment shortens your tenure and cuts total interest — and whether directing that money at the loan or into investments leaves you better off. Free, and your figures stay encrypted on your own device. Open the planner →

Related: Debt avalanche vs snowball — which clears your loans faster

Educational content only — not investment or tax advice. Verify charges and tax rules with your lender and a qualified adviser; rules change.