Understanding Home Loan Amortization
When you use an EMI Calculator for a 20-year home loan, you might be shocked to discover that after 5 years of steady payments, your principal balance has barely dropped. This is the reality of an amortization schedule.
How Banks Apply Your EMI
Your Equated Monthly Installment (EMI) remains constant throughout the loan tenure (assuming a fixed rate). However, the composition of that EMI changes every single month.
Each month, the bank calculates interest strictly on the outstanding principal balance.
Month 1 Breakdown
If you borrow ₹50,00,000 at 9% annual interest (0.75% per month), your first month's interest charge is exactly ₹37,500. If your EMI is ₹44,986, the bank takes the ₹37,500 for interest, and the remaining ₹7,486 goes toward reducing the principal.
Your new principal is ₹49,92,514.
Month 2 Breakdown
In Month 2, the interest is calculated on ₹49,92,514. The new interest charge drops slightly to ₹37,443. This means ₹7,543 goes toward the principal.
The Tipping Point
Because the principal reduces so slowly in the first few years, the majority of your early payments go entirely toward interest. It isn't until the final 30% of your loan tenure that the curve flips, and your EMIs start heavily eating into the principal.
To accelerate this curve and save lakhs in interest, consider reading our guide on Loan Prepayment Benefits.