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Rate Hike EMI Calculator: Repo Rate Change Impact

See how a repo rate hike or cut changes your home loan EMI or tenure, with an optional prepayment. Compare a higher EMI against a longer loan.

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⚠️ Not financial advice. Results are illustrative only and should not be used as the basis for any investment, tax, or financial decision. Consult a qualified financial adviser or chartered accountant before acting on any figure shown.

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Change in the rate
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Rate moves from 8.50% to 8.75%. Today's EMI is ₹43,391 with 20 years left and ₹54,13,879 of interest still to pay.

Option 1: keep the tenure, EMI changes
New EMI₹44,186
Change per month+₹794
Tenure20 years
Extra interest over the loan₹1,90,650
Option 2: keep the EMI, tenure changes
EMI₹43,391 (same)
New tenure21 years
Change in tenure+12 months
Extra interest over the loan₹5,39,574
If you also prepay ₹5,00,000 now (balance becomes ₹45,00,000)
Option 1, EMI falls to₹39,767 (-₹4,419 a month)
Option 2, loan ends in16 years 2 months
Months saved versus not prepaying58
Interest saved versus not prepaying₹20,23,795
Versus today's schedule-46 months

Interest figures cover only what is still to be paid from today, using the standard reducing-balance method. Your lender's statement can differ by a few rupees because of rounding, the day count and when each EMI falls due. The new rate is assumed to last for the rest of the loan; a floating rate keeps resetting with the benchmark.

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What a repo rate change does to a loan you already have

A floating-rate home loan is tied to a benchmark, usually the RBI's repo rate. When the repo rate moves, your lender resets your rate by the same amount at the next reset date, and you have to absorb the change one of two ways. You can keep the tenure and pay a different EMI, or keep the EMI and let the loan run shorter or longer. This calculator shows both side by side, using your balance as it is today, so you do not have to rebuild the loan from the day you took it.

Worked example: ₹50 lakh, 20 years, 8.50%

The EMI on this loan is ₹43,391 and the interest still to pay over 20 years is ₹54.14 lakh. The table shows what each size of hike does.

HikeNew EMI (same tenure)Extra EMI a monthExtra interestMonths added (same EMI)Extra interest (same EMI)
+25 bps₹44,186₹794₹1.91 lakh12₹5.40 lakh
+50 bps₹44,986₹1,595₹3.83 lakh27₹11.82 lakh
+75 bps₹45,793₹2,402₹5.77 lakh45₹19.69 lakh
+100 bps₹46,607₹3,215₹7.72 lakh69₹29.75 lakh

Keeping the EMI looks painless because your monthly outgo does not change, but it is the expensive choice. At +25 bps the extra interest is nearly three times higher than if you raise the EMI, and the gap widens fast as the hike grows.

Why the same hike costs different borrowers different amounts

The impact scales with the balance you owe and the time left, not with how long ago you borrowed. A 25 bps rise on a loan at 8.50% adds ₹794 a month on ₹50 lakh with 20 years to go, but only ₹335 on ₹25 lakh with 10 years left, and ₹116 on ₹10 lakh with 3 years left. Borrowers close to the end of their loan barely notice a hike, which is why the balance and remaining tenure are the two inputs that matter most.

Using a prepayment to absorb a hike

A lump sum cuts the balance that the new, higher rate applies to. After 60 EMIs on the loan above, about ₹44.06 lakh is outstanding with 180 months left. If the rate rises to 8.75% and you prepay ₹5 lakh while keeping the EMI, the loan ends about 33 months before the original schedule and saves about ₹11.75 lakh of interest compared with keeping the EMI and not prepaying. If you would rather lower the payment, the same prepayment brings the EMI down by about ₹5,000 a month. Floating-rate loans to individuals for non-business purposes cannot carry prepayment charges under the RBI's Pre-payment Charges Directions, 2025, so check only your own agreement for the exceptions.

What the RBI requires your lender to do

Loans linked to an external benchmark must reset at least once every three months, under the RBI's September 2019 circular. Under its August 2023 framework, lenders must tell you how a reset affects your EMI or tenure, let you choose a higher EMI, a longer tenure or a mix, and let you prepay. Use the figures here to decide before the reset date, and read your sanction letter for your benchmark and reset schedule.

Frequently asked questions

How much does a 25 bps repo rate hike raise my home loan EMI?
On a ₹50 lakh, 20-year loan at 8.50%, a 25 bps rise to 8.75% lifts the EMI from ₹43,391 to ₹44,186, which is ₹794 more a month and about ₹1.91 lakh more interest over the loan. That works out to roughly ₹16 a month for every ₹1 lakh you owe. A larger balance or a longer remaining tenure raises the bill; a small balance with a few years left barely moves.
When does a repo rate hike reach my loan?
Not on the day of the RBI announcement. Home loans linked to an external benchmark such as the repo rate must have their rate reset at least once every three months under the RBI's September 2019 circular, so the change reaches you at your next reset date. Loans linked to a bank's own MCLR reprice on the schedule in your agreement, often more slowly. Your sanction letter names the benchmark and the reset date.
After a rate hike, should I raise my EMI or extend the tenure?
Raising the EMI costs far less interest. In the default example (₹50 lakh, 20 years, 8.50% to 8.75%) keeping the tenure adds about ₹1.91 lakh of interest, while keeping the EMI and letting the loan run 12 months longer adds about ₹5.40 lakh. The RBI's August 2023 framework for floating-rate loans requires lenders to tell you how a reset affects your EMI or tenure and to offer a higher EMI, a longer tenure or a combination, so you have the choice.
Will a lump-sum prepayment cancel out the effect of a rate hike?
A large enough one can. Take a ₹44.06 lakh balance with 180 months left, after a 25 bps rise to 8.75%. Prepaying ₹5 lakh and keeping the EMI at ₹43,391 ends the loan about 33 months before the original schedule and saves about ₹11.75 lakh of interest compared with keeping the EMI and not prepaying. Floating-rate loans to individuals for non-business purposes cannot carry prepayment charges under the RBI's 2025 directions, but check your own agreement.
Can I use this calculator for a rate cut?
Yes. Enter a negative change such as -25 bps. The calculator then shows the lower EMI if you keep the tenure, or how many months sooner the loan ends if you keep paying the same EMI. On the same example a 25 bps cut takes the EMI from ₹43,391 to ₹42,603, or ends the loan about 11 months early at the old EMI.
Does a repo rate change affect a fixed-rate loan?
No, not while the fixed rate lasts. A fixed-rate loan keeps the same rate and EMI until the fixed period ends, so a repo rate hike does not touch it. Floating-rate loans, including every loan linked to the repo rate, move with the benchmark. If your loan is floating, the figures here apply to you once the lender resets the rate.
How are the numbers calculated?
The calculator uses the standard reducing-balance method: EMI = P x r x (1+r)^n / ((1+r)^n - 1), where P is the balance, r the monthly rate and n the number of months. When you keep the EMI, it repays the balance month by month at the new rate until the loan clears. Interest figures cover only what is still to be paid from today. Your lender's statement can differ slightly because of rounding and the day count.

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