Home loan balance transfer: worth it, or not worth it?

A home loan balance transfer moves the outstanding balance to a new lender at a lower rate. Whether it pays is a question of arithmetic with three inputs: how much principal is still outstanding, how many months are left, and what the switch costs in cash. The rate gap on its own decides nothing, which is why two loans with the same gap can produce opposite answers.

This page works through both cases with figures computed by the home loan balance transfer calculator on this site. All bank terms are dated 2026-09-03 and are published starting-from figures, not offers.

The one number that decides it: the break-even month

The switch costs money on day one and saves money every month afterwards. The break-even month is the first month in which the interest saved so far covers the cash paid out. Set against the months remaining on the loan, it answers the question directly.

Break-even in month 7 of 216 remaining is not a close call. Break-even in month 45 of 60 remaining is, because the entire saving arrives in the last quarter of the loan and disappears if the property is sold, the loan is prepaid, or the loan is refinanced again in the meantime.

Worked example A: a pre-2023 loan meets a 2026 offer

An old MCLR-era loan at 9.15% floating, ₹40,00,000 outstanding, 216 months (18 years) left, moving to 7.90%.

The EMI falls from ₹37,833 to ₹34,757, a monthly relief of ₹3,076. Interest remaining on the old loan is about ₹41.72 lakh against about ₹35.08 lakh on the new one.

• Break-even: month 7 of 216 remaining.
• Same tenure, lower EMI: net saving about ₹6.31 lakh.
• Same EMI, shorter tenure: the term falls to 182 months, 34 months shaved, net saving about ₹12.7 lakh.

Two observations. Break-even at month 7 against a tail of 216 months leaves 209 months of pure gain, so the result is robust to a fee or two being higher than assumed. And the same-EMI path is worth roughly double the same-tenure path, which is the choice covered in detail on same EMI versus same tenure.

Worked example B: a small gap on a short tail

₹12,00,000 outstanding at 8.60% floating, 60 months left, moving to 8.10%. A gap of 0.50 points.

The EMI falls from ₹24,678 to ₹24,389, a relief of ₹289 a month.

• Break-even: month 45 of 60 remaining.
• Same tenure: net saving about ₹1,500 across five years, roughly ₹25 a month.
• Same EMI: the tenure shortens by under a month.

On these inputs the borrower puts about ₹15,800 of real cash on the table, carries a fresh mortgage registration, a property revaluation and a legal opinion, and nets about ₹1,500. One unquoted charge, a franking fee or a bundled insurance premium, turns the result negative. A lender calculator that ignores costs reports this same case as “₹289 a month in savings”.

Rules of thumb, stated as observations

These are patterns in the arithmetic, not thresholds that apply to a particular loan. The calculator settles any individual case.

• A rate gap under about 0.50 points rarely clears the costs on its own.
• A remaining tenure under about five years rarely clears them either, because interest on a reducing-balance loan is front-loaded and there is little left to attack.
• An outstanding balance under about ₹10 lakh is dominated by the flat costs. MOD, legal and valuation are largely insensitive to loan size, so they take a bigger percentage bite.
• Where two of those three conditions hold at once, the transfer is usually under water before it starts.

What the switch actually costs

The old lender is free to leave on a floating-rate home loan. The RBI (Pre-payment Charges on Loans) Directions, 2025 state that a regulated entity shall not levy pre-payment charges on loans granted to individuals for purposes other than business at a floating rate, and earlier circulars from 2012 and 2014 already covered floating-rate home loans. Fixed-rate loans are outside that: Kotak’s published fee schedule still shows up to 4%.

Everything else sits on the new loan. Processing fees as published on 2026-09-03 run from a flat ₹8,500 at Bank of Baroda’s takeover scheme to 0.35% subject to ₹2,000 and ₹10,000 at SBI, up to 0.50% or ₹3,000 whichever is higher at HDFC Bank, and up to 2% plus a ₹5,000 login fee at Kotak. All attract 18% GST. Then come MOD or stamp duty, a legal opinion, a technical valuation and CERSAI registration. The full itemisation with sources is on home loan balance transfer charges.

The alternative most calculators never mention

Before moving lenders, the existing lender’s own conversion or switch facility is worth pricing. HDFC Bank publishes a conversion fee on variable-rate housing loans of up to 0.50% of the principal outstanding plus undisbursed amount, capped at ₹50,000 plus taxes, whichever is lower. Kotak publishes 0.5% of principal outstanding capped at ₹10,000 to move a floating loan to the external benchmark, and ₹2,500 to move floating to fixed. Both retrieved 2026-09-03.

A conversion does not create a fresh mortgage, so there is no second MOD, no revaluation, no legal opinion and no NOC chase. On example B, a ₹10,000 conversion capped fee against ₹15,798 of transfer costs changes the arithmetic materially. The saving is usually smaller than a full transfer would deliver, because the internal spread on offer is rarely the market’s best rate, but the cost side is far smaller too.

The RBI circular on Reset of Floating Interest Rate on EMI based Personal Loans, RBI/2023-24/55 dated 18 August 2023, requires that all charges for switching and for related services are transparently disclosed in the sanction letter and again at the time of revision, so the conversion fee is a figure the existing lender is obliged to state.

Things that change the answer

A top-up. ICICI Bank, Bank of Baroda and Bajaj Housing Finance all offer a top-up alongside the transfer, and it is the main reason lenders market transfers at all. Blending a top-up into the comparison makes the transfer look better than it is, because the extra borrowing is a separate decision. Keeping the two apart is the only way to read the transfer verdict cleanly.

A rate that is not the advertised one. Published rates are gated on credit score, loan to value and employment type, and Business Standard reported a spread of 7.10% to 12.58% across lenders in mid-January 2026. Running the calculator again on the sanctioned rate, rather than the marketed one, is the test that matters.

Costs that were not quoted. MOD or stamp duty varies by state and is the largest unknown in the cost stack. Property insurance is sometimes pushed at disbursement. A ₹2,000 surprise is noise in example A and decisive in example B.