How your EMI is worked out
An EMI combines principal and interest into one regular monthly payment. Early payments usually contain more interest; as the outstanding balance shrinks, more of each payment goes toward principal.
EMI = P × r × (1+r)ⁿ ÷ ((1+r)ⁿ − 1)P = loan principal · r = monthly interest rate · n = number of monthly paymentsTry a shorter tenure to see how a larger monthly payment can reduce total interest. A lower rate has a direct effect on both the EMI and the overall cost of borrowing.
How to calculate EMI manually without a calculator
To calculate EMI manually without a calculator, follow three steps. Step 1: convert the annual interest rate to a monthly decimal — divide by 12, then by 100 (12% becomes 0.01). Step 2: convert the tenure to months (3 years = 36). Step 3: plug the numbers into EMI = P × r × (1+r)n ÷ ((1+r)n − 1). Worked example: P = ₹5,00,000, r = 0.01, n = 36 → EMI ≈ ₹16,607 per month. The rate conversion in step 1 is where most manual calculations go wrong — get that right and the rest is arithmetic.