Finance · Loans · 7 min read

EMI Calculator Guide 2026 — Everything About Loan EMIs

Before taking any loan in India — home, car, or personal — you must calculate your EMI. This guide explains the EMI formula, how banks calculate interest, and how to use HQCalc's EMI calculator to find the best loan structure for your budget.

By HQCalc Team·June 2026

What is EMI?

EMI (Equated Monthly Installment) is the fixed amount you pay your bank every month to repay a loan. Each EMI has two parts: interest (cost of borrowing) and principal (loan repayment). In early months, most of the EMI goes toward interest. Gradually, more goes toward principal repayment.

The EMI Formula

EMI = P × R × (1+R)^N / ((1+R)^N - 1)

P = Principal loan amount, R = Monthly interest rate (Annual rate ÷ 12 ÷ 100), N = Loan tenure in months.

Example: ₹50 Lakh Home Loan

Principal: ₹50,00,000 | Rate: 8.5% p.a. | Tenure: 20 years (240 months)

Monthly EMI: ₹43,391 | Total amount paid: ₹1,04,13,840 | Total interest: ₹54,13,840

You'll pay more in interest than your principal over 20 years — this is why prepayments are so powerful.

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