Mortgage Refinance Calculator

When switching your home loan pays off

Interest rates move, and a loan that looked competitive a few years ago can quietly become expensive. Refinancing — in India, usually a home loan balance transfer — moves your outstanding balance to a lower rate, shrinking your EMI or shortening your tenure. The catch is that switching isn’t free, so the real question is never just "is the new rate lower?" but "does the saving outweigh the cost?" This calculator answers that precisely.

The logic is straightforward. Your monthly saving is the difference between your old EMI and the new one at the lower rate. Switching incurs one-time closing costs, so the breakeven — closing costs ÷ monthly saving — tells you how many months of savings it takes to recover them. Beyond that month, every EMI saving is pure gain, and the net lifetime saving nets those costs against the total saved over your remaining tenure.

The breakeven is everything

A lower rate always looks attractive, but the breakeven point decides whether it is actually worth it. If your closing costs are ₹50,000 and refinancing saves ₹4,000 a month, you break even in about 13 months — after which the savings are yours. But if the rate cut is small and costs are high, the breakeven can stretch for years. If you plan to prepay aggressively, sell the property, or the loan is near its end, you may never reach it.

That is why refinancing pays off most early in the tenure, when interest makes up the largest share of each EMI and there are many months left to accumulate savings. Late in the loan, most of your EMI is already principal, so a lower rate saves little.

Counting the real cost

The closing costs are more than a single fee. Budget for:

• A processing fee on the new loan, often 0.25–1% of the balance.
• Legal and technical valuation charges.
• Stamp duty on the new mortgage.
• Occasional documentation or CERSAI fees.

Include all of these in the breakeven — using only the headline processing fee will flatter the result.

A cheaper first move

Before going through a full switch, ask your current lender to match the lower rate. Many will reduce your rate for a small conversion fee, letting you capture most of the saving without the paperwork, the hard credit enquiry, or the full closing costs of moving lenders. And because RBI rules mean floating-rate loans to individuals generally carry no foreclosure penalty, you keep the option to switch open at any time. Run your own numbers here first: if the breakeven is comfortably shorter than how long you’ll keep the loan, refinancing is very likely worth it.