How the EMI is calculated
For a loan amount P, a monthly rate r = yearly rate ÷ 12 and n monthly instalments:
EMI = P × r × (1 + r)^n ÷ ((1 + r)^n − 1)
Each month, interest is charged on the remaining balance and the rest of the EMI repays principal. Early on most of the EMI is interest; towards the end it's mostly principal.
Example
₹50,00,000 at 8.5% for 20 years: r ≈ 0.708%, n = 240, so the EMI is ₹43,391. Over 20 years you pay ₹1,04,13,879, of which ₹54,13,879 is interest.
Does prepaying help?
Every extra payment goes straight to principal, so all future interest on it disappears. In the example, ₹5,000 extra a month cuts the loan from 240 to 187 months and saves ₹13,89,250 in interest. Check whether your lender charges a prepayment fee; for floating-rate home loans to individuals in India, banks generally may not.
Estimates for planning, not financial advice. Real loans may use different rounding, fees or rate changes. Last reviewed 4 October 2026.
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