MCLR (Marginal Cost of Funds Based Lending Rate) is an internally linked benchmark where banks determine the minimum lending rate based on their own funding costs,. In contrast, RLLR (Repo Linked Loan Rate), often referred to as EBLR (External Benchmark Lending Rate), is an externally linked benchmark that is directly tied to the Reserve Bank of India’s (RBI) repo rate,. The core differences between the two interest rate mechanisms include:

• Calculation Mechanism: RLLR is calculated simply as the RBI’s Repo Rate plus a spread (a markup added by the bank to cover operational costs and borrower risk),. MCLR calculation is strictly internal and incorporates the bank’s marginal cost of funds, operating costs, tenor premium, and the Cash Reserve Ratio (CRR),,.
• Transparency: RLLR offers high transparency because the RBI’s repo rate is a publicly declared figure, making it easy for borrowers to track and predict rate fluctuations,. MCLR provides limited transparency since the computation relies on the lender’s internal business metrics and funding costs, making it difficult for borrowers to understand exactly how their interest rate was derived,.
• Reset Period: MCLR rates are typically revised every 6 to 12 months,,. This means that even if market rates change, your EMI will remain unaffected until the reset date arrives. On the other hand, RLLR-based loans mandate a revision at least once every 3 months, causing your EMIs to adjust much more frequently,,.
• Speed of Rate Transmission: Due to the longer reset periods, MCLR has a much slower transmission rate. Borrowers will experience a delayed impact on their EMIs when the central bank cuts or raises rates,,. RLLR ensures rapid transmission, meaning that any policy adjustments by the RBI are passed on to the borrower and reflected in their EMIs almost immediately,,.
• Stability vs. Volatility: Because rate changes are delayed, MCLR provides greater stability and predictable EMIs over the medium term, offering a buffer against sudden interest rate hikes and making long-term budgeting easier,,. Conversely, RLLR is highly dynamic and volatile. It is highly advantageous during an economic cycle where the central bank is cutting rates—allowing borrowers to secure immediate savings—but it carries a much higher risk of sudden EMI hikes during periods of economic tightening,,.

Ultimately, MCLR is best suited for borrowers who prefer steady, predictable repayment schedules, while RLLR is ideal for those who value transparency and want to instantly capitalise on falling interest rates,.   Reducing your loan tenure can save you a substantial amount of money by significantly lowering the total interest you pay over the life of the loan. While a longer tenure offers the appeal of a smaller Equated Monthly Instalment (EMI), it drastically increases the overall cost of borrowing because you are paying interest for a longer period. To illustrate how much you can save, consider an example of a ₹40 lakh home loan at an interest rate of 7.60% per annum:

• 20-Year Tenure: Your EMI would be ₹32,469, and the total interest outgo over 20 years would be ₹37,92,453.
• 15-Year Tenure: Your EMI would increase to ₹37,308, but the total interest outgo drops significantly to ₹27,15,497.

In this scenario, by curtailing the tenure by 5 years, you would save approximately ₹10,76,956 in interest, despite your monthly EMI increasing by just ₹4,839. You can also reduce your tenure and save money by making strategic prepayments during your loan period. For instance, making just one extra EMI payment every year can reduce a 20-year loan tenure down to roughly 14 years. On a ₹50 lakh loan at an 8.5% interest rate, this simple strategy can save you over ₹20 lakh in interest. Ultimately, optimising your loan tenure is one of the most effective ways to lower your borrowing costs, provided the higher monthly EMIs fit comfortably within your budget—ideally keeping your total EMI obligations below 50% to 60% of your net monthly take-home pay. To calculate the savings from paying an extra EMI (part-prepayment), you can use a mathematical formula or a digital home loan prepayment calculator. Using the Mathematical Formula: The core concept behind calculating your savings is finding the difference between the total interest you would pay on your current loan trajectory versus the interest after the extra payment is applied. This can be estimated using the following basic formula: Savings = (Interest on Original Principal) – (Interest on Reduced Principal). A more detailed formula to calculate your exact prepayment savings is: Prеpaymеnt Savings = (P × t × (1+t)^x) / ((1+t)^x – 1) – (EMI × x) Where:

• P = Principal loan amount
• t = Monthly intеrеst ratе
• x = Rеmaining loan tеnurе in months
• EMI = Equatеd Monthly Instalment

Using an Online Prepayment Calculator: Because manual calculations can be complex, it is highly recommended to use an online home loan prepayment calculator. You can determine your savings by following these simple steps:

1. Enter your outstanding loan amount: This is the remaining balance you still owe to the lender.
2. Enter your loan tenure: Input the time left for your loan repayment in months or years.
3. Enter your rate of interest: Input the current interest rate applicable to your home loan.
4. Enter the part-prepayment amount: Specify the extra EMI amount you plan to pay towards your principal.
5. Calculate: The tool will process the information and display your revised EMI, the total interest saved, and the new loan tenure.

When you make an extra EMI payment, it is applied directly to your outstanding principal, meaning less interest will accrue over the life of the loan. Upon making this prepayment, you can choose to either reduce your monthly EMI amount (which frees up monthly cash flow) or reduce your loan tenure (which allows you to clear the debt sooner and saves you the maximum amount of money on interest).