Almost every home loan sanctioned in India since October 2019 is an external benchmark loan, usually linked to the RBI repo rate. When the benchmark moves, your loan rate moves with it at the next reset — typically once a quarter. Your EMI, however, usually does not move at all. The lender absorbs the increase by extending your tenure, and often the only notice you get is a line in an email.
Why the silent option is expensive. Take a ₹40,00,000 loan at 8.5% for 20 years: EMI ₹34,713, total interest about ₹43.3 lakh. Three years in, the rate resets to 9.5%. Outstanding principal is roughly ₹37.2 lakh.
- Keep the EMI at ₹34,713: the remaining tenure stretches from 17 years to a little over 20 years — roughly 38 extra months of payments, costing about ₹13 lakh in additional interest.
- Raise the EMI to about ₹37,400: the loan still finishes in the original 17 years. You pay roughly ₹2,700 more a month, and you avoid most of that extra interest.
Same rate hike, two very different outcomes, and the cheaper one is never the default.
The trap nobody warns you about: negative amortisation. If the rate rises far enough, your unchanged EMI may no longer cover the monthly interest, and the shortfall gets added back to the principal — your balance grows despite paying every month. Lenders are required to offer you the choice of a higher EMI, a longer tenure, or both when a reset happens, but many communicate it poorly. If your outstanding balance is higher today than it was a year ago, this is what is happening, and it needs fixing now.
What to do in the week after a reset notice.
- Ask for the revised amortisation schedule in writing. You want the new rate, the new outstanding, and the new closing date. If the closing date has moved, you now know the true cost.
- Choose your option explicitly. Tell the bank in writing whether you want a higher EMI, a longer tenure, or a part payment that keeps the original closing date. This is your right at a reset and there is normally no charge to exercise it.
- Check the spread, not just the rate. Your rate is repo plus a spread fixed at sanction. Banks quote new customers a lower spread over time, so a loan taken three years ago is often 40–80 basis points above what the same bank offers today. Ask for a conversion to the current spread — most lenders will do it for a small administrative fee, which is far cheaper and faster than a balance transfer.
A part payment can undo a rate hike outright. On that ₹40 lakh loan, a one-time ₹3,00,000 payment immediately after the reset brings the closing date back roughly to where it was before the rate moved, without touching your monthly budget. If you receive an annual bonus, timing it just after a reset is the single highest-value use of it.
When a longer tenure is genuinely the right call. If the higher EMI would push your total obligations past roughly 50% of net monthly income, or you have a school fee, medical cost or job change in the next year, take the tenure extension deliberately, treat it as temporary, and set a date to reverse it. A stretched tenure you chose and plan to undo is very different from one that happened to you.
See what the new rate does to your EMI
Compare the two paths with the Home Loan EMI Calculator, and check whether moving lenders is worth it in Balance Transfer: When Switching Lenders Actually Saves Money.