What the repo rate is and why it matters
The repo rate is the rate at which the RBI lends money to commercial banks. When the RBI lowers the repo rate, banks' cost of funds typically decreases, and they're expected to pass some of that reduction on to borrowers through lower lending rates. When the RBI raises the repo rate, the reverse applies — banks' borrowing costs rise, and lending rates typically follow.
Most home loans disbursed after October 2019 are linked to an external benchmark rather than a bank's internal rate. The most common external benchmark is the repo rate itself (Repo Linked Lending Rate, or RLLR). This matters because it makes the transmission faster and more transparent than it was under older internal-benchmark systems.
How a rate change reaches your EMI
If your loan is RLLR-linked, a repo rate change takes effect on your loan within the reset period defined in your loan agreement — most commonly every quarter, though some lenders reset monthly. From that reset date, your loan's effective interest rate changes by the same amount as the repo rate movement (plus or minus a spread your lender sets, which is fixed for the life of the loan).
What changes next depends on your lender's default approach: some adjust the EMI amount while keeping the tenure fixed; others keep the EMI the same and adjust the tenure (a rate cut shortens tenure; a rate hike extends it). Check your loan agreement or ask your lender directly — the default isn't uniform across banks, and many lenders allow you to choose between the two options when a rate change occurs.
The impact in numbers
On a ₹40 lakh outstanding balance with 15 years remaining: a 0.5% rate cut (say, from 8.5% to 8.0%) reduces the EMI by approximately ₹1,100 per month if the tenure is held constant, or shortens the tenure by roughly 9 months if the EMI is held constant. On a ₹75 lakh outstanding balance with 20 years remaining, the same 0.5% cut saves roughly ₹2,100 per month on EMI, or shortens tenure by about 15 months.
These numbers illustrate why tenure-based transmission (same EMI, shorter loan) is generally better for total interest paid over the loan's life — even though the monthly savings aren't visible in your bank statement, you're paying interest for fewer months overall.
What to actually do when rates change
When the RBI cuts rates, check with your lender what reset date applies to your loan and what they've changed your rate to. Don't assume the full transmission was passed on automatically — in practice, banks sometimes pass through partial reductions, or delay. If your lender hasn't reduced your rate in line with the repo cut, you're entitled to request a rate reset, or to explore refinancing to a lender offering better transmission.
When rates rise, the opposite dynamic applies: if your lender is extending your tenure rather than raising your EMI, your loan may quietly stretch from 20 years to 24 years without any visible change to your monthly statement. Requesting an EMI increase to keep the tenure at its original length typically saves meaningful total interest over the life of the loan.