Home loan balance transfer calculator (India)

What a home loan balance transfer actually is

A balance transfer, called a takeover by the public sector banks, moves an existing home loan to a different lender at a lower rate. The new lender pays off the outstanding principal at the old lender, the old mortgage is discharged, and a fresh loan is sanctioned against the same property on fresh paperwork. Nothing about the property changes. What changes is the rate, the schedule, and a set of one-off costs that land in the first month.

The arithmetic compares two streams of payments. The interest still to be paid on the old loan can be calculated exactly from the balance, the rate and the months left. The new loan carries a lower interest total but starts with costs attached, so the useful summary is the break-even month: the month in which the interest saved so far covers the cash paid out to switch.

Two facts make the Indian market unusual. On a floating-rate home loan to an individual the exit costs nothing, so the whole cost of switching sits on the arrival side. And the spread between lenders is wide: home loan rates in mid-January 2026 ranged from 7.10% to 12.58% (Business Standard, retrieved 2026-09-03), so a loan sanctioned before the 2025 rate cuts can sit well above what the same borrower would be offered today.

The costs, itemised

Fees change without notice and are subject to individual credit assessment. Every figure below carries the date it was read.

• Processing fee on the new loan. State Bank of India links a fee card rather than stating it inline; a secondary source describes 0.35% of the loan plus GST, minimum Rs 2,000 and maximum Rs 10,000, frequently waived under limited-period offers (BankBazaar, secondary source, retrieved 2026-09-03). HDFC Bank publishes up to 0.50% of the loan or Rs 3,000, whichever is higher, plus taxes; Kotak Mahindra Bank up to 2% plus taxes with a non-refundable Rs 5,000 login fee adjusted against it; Bank of Baroda a flat Rs 8,500 for a takeover, effective 1 April 2025, excluding GST (all retrieved 2026-09-03). The spread across those four is larger than the spread on the rate, and on a large loan a rupee cap matters more than the percentage.
• GST at 18% on the fee. GST applies to fees, not to loan interest. On a Rs 10,000 processing fee it adds Rs 1,800.
• MOD or stamp duty on the fresh mortgage. State-levied, commonly cited at about 0.1% to 0.5% of the loan, with roughly 0.3% quoted for Maharashtra-style states, and often capped (Paisabazaar, secondary source, retrieved 2026-09-03). On Rs 40 lakh that is about Rs 12,000. HDFC Bank states plainly that stamp duty, MOD, MOE and CERSAI charges are borne and paid solely by the customer at actuals (retrieved 2026-09-03).
• Legal opinion and technical valuation. At actuals. A legal fee of about Rs 1,200 including GST is quoted in a secondary source, and Kotak Mahindra Bank publishes a valuation charge of up to Rs 5,000 plus taxes (retrieved 2026-09-03).
• CERSAI registration. Rs 50 plus GST up to Rs 5 lakh and Rs 100 plus GST above that (BankBazaar, secondary source, retrieved 2026-09-03).
• Foreclosure charge at the old lender. Nil on a floating-rate home loan to an individual. Kotak Mahindra Bank publishes nil for floating-rate individual borrowers and up to 4% for fixed-rate loans (retrieved 2026-09-03).
• Franking, NOC and document retrieval. Small charges from the outgoing lender, rarely quoted upfront, and the usual reason a marginal transfer turns negative.

The RBI rule, stated precisely

The Reserve Bank of India (Pre-payment Charges on Loans) Directions, 2025, notification RBI/2025-26/64, were issued on 2 July 2025 and apply to loans and advances sanctioned or renewed on or after 1 January 2026. For loans granted to individuals for purposes other than business, a regulated entity may not levy pre-payment charges, irrespective of co-borrowers, the source of the funds used to prepay, or the loan amount, and without any minimum lock-in period. For business-purpose loans to individuals and micro and small enterprises the position is narrower and depends on the class of lender and on a Rs 50 lakh threshold for smaller banks and NBFC-ML lenders. On a dual or special rate loan, applicability turns on whether the loan is on a floating rate at the time of prepayment.

Two qualifications matter for anyone reading the headline version of this rule. It covers floating-rate loans, so a fixed-rate loan can still be charged. And it applies to loans sanctioned or renewed on or after 1 January 2026, so an older loan is outside it on the strength of the 2025 Directions alone. Home loans are the case where that second point rarely bites, because RBI circulars of 2012 and 2014 had already barred foreclosure charges and pre-payment penalties on floating-rate home loans to individual borrowers. HDFC Bank states nil prepayment charges for individual floating-rate borrowers whatever the source of the funds (retrieved 2026-09-03).

The 2023 RBI circular on the reset of floating interest rates adds that all charges for switching must be disclosed in the sanction letter and again at the time of revision, and that prepayment in part or in full is permitted at any time during the tenor.

Same tenure or same instalment

After a rate cut the borrower faces a choice most calculators never present. The new loan can run for the same number of months at a lower instalment, or keep the old instalment and finish earlier. The first frees cash every month; the second puts the entire rate cut into principal and is worth far more.

Take Rs 40,00,000 with 216 months left at 9.15% floating, against an offer at 7.90%. A processing fee of 0.35% would be Rs 14,000, but the lender caps it at Rs 10,000; GST adds Rs 1,800, MOD stamp duty at 0.3% is Rs 12,000, and legal, valuation and CERSAI come to Rs 5,118. Foreclosure is nil, so the total switching cost is Rs 28,918.

• The old instalment is about Rs 37,833 and the interest still to be paid on the old loan is about Rs 41.72 lakh.
• Keeping the same 216-month tenure, the instalment falls to about Rs 34,757, a monthly difference of about Rs 3,076, and the interest falls to about Rs 35.08 lakh. Net of the Rs 28,918 of costs, the position improves by about Rs 6.36 lakh, and the costs are recovered by month 7.
• Keeping the instalment at Rs 37,833, the loan clears in 182 months instead of 216, which is 34 months earlier, and the net gain is about Rs 12.7 lakh.

Same loan, same offer, same costs. The choice of what to do with the rate cut is worth roughly double. ICICI Bank's own balance transfer FAQ notes that a borrower may retain the current EMI and reduce the tenure instead (retrieved 2026-09-03), so the option is available in the market even where the default paperwork assumes a lower instalment.

The case that looks like a saving and is not

Now Rs 12,00,000 with 60 months left at 8.60% floating, against an offer at 8.10%. Processing at 0.50% is Rs 6,000 with Rs 1,080 of GST, MOD at 0.3% is Rs 3,600, and legal, valuation and CERSAI are Rs 5,118, for Rs 15,798 in total. The instalment falls from about Rs 24,678 to about Rs 24,389, a difference of Rs 289 a month. The costs are recovered in month 45 of 60, and the net gain over the full five years is about Rs 1,500, or roughly Rs 25 a month.

A calculator that ignores costs reports this as a saving of Rs 289 a month. The reading that survives the arithmetic is that Rs 15,798 of cash, a fresh mortgage, a revaluation and a stack of paperwork buy about Rs 1,500 over five years, and that one unquoted charge turns it negative. The pattern generalises: a rate gap under 0.50 percentage points rarely clears the costs, a remaining tenure under five years rarely clears them, and below about Rs 10 lakh the flat costs dominate whatever the rate gap is.

Ask the existing lender first

Before comparing lenders, there is a cheaper transaction to price. Most lenders will convert an existing loan to a lower spread internally for a conversion or switch fee, with no fresh mortgage, no revaluation and no legal opinion. HDFC Bank publishes a conversion fee on variable-rate housing loans of up to 0.50% of the principal outstanding plus the undisbursed amount, capped at Rs 50,000 plus taxes, whichever is lower (retrieved 2026-09-03). Kotak Mahindra Bank publishes 0.5% of the principal outstanding capped at Rs 10,000 for a floating to external benchmark conversion, Rs 2,500 for floating to fixed, and 0.5% per year of the residual tenure up to a maximum of 3% for fixed to floating (retrieved 2026-09-03).

On the Rs 40 lakh example, a conversion capped at Rs 10,000 against a transfer costing Rs 28,918 changes the comparison materially. A conversion usually cannot match the lowest external offer, so the arithmetic worth doing is the conversion fee and the rate it buys against the full switching cost and the rate the new lender has actually sanctioned.

When the numbers do not support a transfer

• The rate gap is under half a percentage point.
• Fewer than five years are left, so most of the interest has already been paid and there is little left to attack.
• The outstanding balance is small enough that flat costs, stamp duty above all, swamp the rate gap.
• The property is likely to be sold, or the loan prepaid in full, before the break-even month.
• The advertised rate has not been sanctioned yet. Published rates are starting-from rates gated on credit score, loan-to-value, income and employment type, and a rate that lands 50 basis points higher can turn a marginal case negative.
• The lower instalment comes from a longer tenure. Total interest rises, and a longer schedule is a cash-flow decision rather than a saving.

How to use the calculator above

Enter the outstanding principal from the latest statement rather than the sanctioned amount, since the sanctioned amount overstates the balance and every other figure follows from it. Add the rate currently charged and the months left. Leave the instalment blank to derive it, or fill it in when the lender's figure differs, which happens after a part-prepayment or a reset. Mark the loan floating or fixed and say whether it was sanctioned on or after 1 January 2026, and the suggested foreclosure charge follows from the RBI position; type over it with the figure in the loan agreement or the Key Facts Statement where it differs.

On the cost side, enter the processing fee as a percentage with its floor and cap. Put the stamp duty, legal, valuation and CERSAI charges into the single other-costs line. GST defaults to 18% on fees. Adding the fees to the new loan keeps cash in hand and adds interest on them for the life of the loan, and the itemised table separates what is financed from what is paid on day one.

Then read the break-even month against the months remaining, the side-by-side of the two repayment paths, and the break-even rate line, which states the rate at which the offer stops covering its own costs. This site is not a lender, a broker or an intermediary, earns nothing from any lender, and every figure here is arithmetic under the inputs entered rather than an offer.