EMI Table: ₹20 Lakh Home Loan at Different Rates and Tenures
EMI = P × r × (1 + r)^n ÷ [(1 + r)^n − 1] Where P = principal, r = monthly rate (annual rate ÷ 12 ÷ 100), n = months 8% annual rate: • 10 years: EMI ₹24,266 | Total interest ₹9.12 lakh • 15 years: EMI ₹19,113 | Total interest ₹14.4 lakh • 20 years: EMI ₹16,729 | Total interest ₹20.15 lakh 8.5% annual rate: • 10 years: EMI ₹24,797 | Total interest ₹9.76 lakh • 15 years: EMI ₹19,692 | Total interest ₹15.45 lakh • 20 years: EMI ₹17,356 | Total interest ₹21.65 lakh 9% annual rate: • 10 years: EMI ₹25,335 | Total interest ₹10.4 lakh • 15 years: EMI ₹20,285 | Total interest ₹16.51 lakh • 20 years: EMI ₹17,996 | Total interest ₹23.19 lakh
Why Your Interest Can Exceed the Principal
On a 20-year loan at 8.5%, you pay back ₹41.65 lakh against a ₹20 lakh principal — ₹21.65 lakh in interest alone. This happens because of how amortization works: in the early years, most of each EMI goes toward interest rather than principal. In month 1 on a ₹20 lakh, 20-year loan at 8.5%, approximately ₹14,167 of the ₹17,356 EMI goes to interest and only ₹3,189 reduces the principal. This ratio gradually flips over time. By the final year, most of each EMI is principal repayment. This is called front-loaded interest amortization.
How to Reduce Total Interest on a Home Loan
Three practical strategies reduce total interest cost: 1. Prepay whenever possible. A lump-sum prepayment in the early years has a disproportionate impact because it reduces the outstanding principal on which future interest is calculated. Even ₹1–2 lakh prepaid in year 2 or 3 can reduce total interest by ₹3–5 lakh. 2. Shorten the tenure. A 15-year loan vs a 20-year loan at 8.5% saves ₹6.2 lakh in interest on a ₹20 lakh loan, at the cost of ₹2,336 more per month in EMI. 3. Refinance when rates drop. If your existing rate is 9.5% and rates have fallen to 8.25%, refinancing saves significant interest over the remaining tenure. Check prepayment charges and processing fees before refinancing.