Two colleagues in Bengaluru took the same 50 lakh rupee home loan in 2026 at the same interest rate. One chose a 20 year term, the other stretched it to 30 years to keep the monthly outgo low. The second felt clever at first, paying a few thousand rupees less each month. Years later, doing the sums, he realised the longer term had cost him more than 30 lakh rupees extra in interest for the same flat. Neither the bank nor the rate had tricked him. He had simply not understood how an EMI is built, and how much the length of the loan, not just the rate, decides what a home really costs.

The short answer. Your EMI depends on three things, the loan amount, the interest rate, and the tenure. The interest rate on most floating home loans is linked to the RBI repo rate, which stands at 5.25 percent as of the June 2026 policy, with lenders adding a spread on top. The trade off that catches buyers is tenure. A longer term lowers your monthly EMI but raises the total interest sharply, so the cheapest looking monthly figure is often the most expensive loan overall.

The repo rate is set by the Reserve Bank of India, and its current level is confirmed by summaries such as ClearTax. Here is how it flows through to what you actually pay.

What is the repo rate and why does it matter to your EMI?

The repo rate is the rate at which the RBI lends to banks, and it sets the floor under most floating home loan rates. As of the June 2026 monetary policy, the repo rate is 5.25 percent, held steady with a neutral stance. Banks link their floating home loan rates to this benchmark through a repo linked lending rate, then add a spread that reflects their costs and your profile. So a floating home loan rate typically sits a few percentage points above the repo rate, commonly in the region of 8 to 9 percent, though your exact rate depends on the lender, your credit, and the loan size.

Because the rate is linked to the repo, it moves when the RBI moves. When the repo rate falls, floating home loan rates tend to follow, and when it rises they climb. That is why buyers watch the repo rate. It is the single number that most influences where their own rate will sit.

How is an EMI actually calculated?

An EMI is calculated with a fixed formula that spreads the loan and its interest evenly across every month of the tenure. The formula is EMI equals P multiplied by r multiplied by (1 plus r) to the power n, divided by ((1 plus r) to the power n minus 1), where P is the loan amount, r is the monthly interest rate, and n is the number of monthly instalments. The monthly rate r is simply the annual rate divided by twelve. You do not need to compute this by hand, since any lender or online calculator will, but understanding it shows why small changes in rate or tenure move the EMI so much.

The key insight is that early EMIs are mostly interest and later ones are mostly principal. In the first years, most of what you pay is the cost of borrowing rather than repayment of the loan itself, which is why paying a little extra early, or choosing a shorter tenure, saves so much.

A quick worked example makes the formula concrete. On the 50 lakh loan above at an illustrative 8.5 percent over 20 years, the EMI works out to about 43,390 rupees a month. Over the full 240 months that is roughly 1.04 crore rupees paid in all, of which about 54 lakh rupees is interest. On this example the interest alone can exceed the loan itself. A difference of even half a percentage point in the rate, or a few years in the tenure, shifts that interest figure by several lakh rupees, which is why it pays to compare offers carefully rather than settling for the first sanction you are given.

How does loan tenure change what you pay?

Tenure changes the total cost dramatically, even when the rate stays the same. A longer term shrinks the monthly EMI but stretches the interest across many more months, so you pay far more in total. The table below shows a 50 lakh rupee loan at an illustrative 8.5 percent across different tenures, so you can see the trade between a comfortable monthly figure and the lifetime cost.

Why can the same loan cost so much more over a long term?

The same loan costs more over a long term because interest keeps accruing on the outstanding balance for every extra year you take to repay. Look at the table again. Moving from a 20 year to a 30 year loan drops the EMI by only about 5,000 rupees a month, yet it adds more than 34 lakh rupees to the total interest. That is the trap the second Bengaluru colleague fell into. The lower monthly figure felt affordable, but it meant paying interest for 120 more months on a balance that fell only slowly.

This does not mean the shortest tenure is always right. A higher EMI must still fit your monthly budget comfortably, and stretching too far can leave you exposed if your income dips. The point is to choose tenure deliberately, weighing the monthly comfort against the lifetime cost, rather than defaulting to the longest term for the lowest EMI.

What happens to your EMI when the repo rate changes?

When the repo rate changes, a floating rate loan usually adjusts either your EMI or your tenure. If the RBI raises the repo rate, your lender may increase your EMI, or keep the EMI the same and extend your tenure, so the loan takes longer to clear. If the repo rate falls, the reverse happens and you either pay less each month or finish sooner. Since the repo rate is currently held at 5.25 percent, rates have been stable, but buyers on floating loans should remember that this can change at future policy meetings.

This is also why the gap between a fixed and a floating rate matters. A floating rate follows the repo and can rise or fall, while a fixed rate stays constant but usually starts higher. Which suits you depends on how much certainty you want and how you read the direction of rates.

How should a Bengaluru buyer use this?

Use it to shop on total cost, not just the monthly EMI or the headline rate. Before you commit, run your loan through a calculator at a few tenures and see the total interest for each, the way the table above does. A project such as Purva Parc in Balagere sits at a price where these numbers are large enough that a tenure choice can swing your lifetime cost by tens of lakhs. Pair this with an understanding of how much you can borrow in the first place, which our guide to loan to value and down payment explains, and how the interest feeds your tax, covered in our home loan tax benefits guide.

The habit that serves buyers best is to pick the shortest tenure whose EMI you can carry comfortably, and to make occasional prepayments when you can. Both cut the interest that quietly makes a home cost far more than its price.

What should you check before you sign the loan?

Run through these seven steps so you choose a loan on its true cost, not its lowest monthly figure.

1. Confirm whether the rate is floating and linked to the repo rate, or fixed.
2. Ask for the spread the lender adds over the repo linked lending rate.
3. Calculate the EMI and total interest at two or three different tenures.
4. Choose the shortest tenure whose EMI still fits your monthly budget comfortably.
5. Check whether a repo rate rise would change your EMI or extend your tenure.
6. Ask whether prepayments are allowed without charges on a floating rate loan.
7. Compare offers on the total interest over the loan, not just the monthly EMI.

What is the current RBI repo rate?

As of the June 2026 monetary policy, the RBI repo rate is 5.25 percent, held steady with a neutral stance. Most floating home loan rates are linked to this benchmark, with the lender adding a spread on top, so your actual rate sits above the repo rate and moves when the RBI changes it at future policy meetings.

How is my home loan EMI calculated?

Your EMI is fixed by the loan amount, the monthly interest rate, and the number of instalments, using a standard formula that spreads principal and interest evenly across the tenure. Any lender or online calculator computes it for you. The main takeaway is that both a higher rate and a longer tenure raise what you ultimately pay.

Does a longer tenure make my loan cheaper?

Only the monthly EMI, not the loan. A longer tenure lowers your monthly payment but increases the total interest substantially, because interest accrues for many more months. On a 50 lakh loan, moving from 20 to 30 years can add over 30 lakh rupees of interest, so a longer term usually makes the home more expensive overall.

Will my EMI change if the repo rate rises?

On a floating rate loan, yes, in one of two ways. A repo rate rise can increase your monthly EMI, or your lender may keep the EMI the same and extend your tenure instead. A fixed rate loan stays constant regardless of the repo rate, but it usually starts at a higher rate than a floating one.

Last updated 2026-07-20. PropNewz Team.