How EMI is calculated
A fixed-rate installment loan charges the same interest rate for the whole term, with a level monthly payment that covers both principal and interest so the balance reaches exactly zero at the end of the term.
The formula, in plain language
EMI = P × [r(1 + r)^n] / [(1 + r)^n − 1]
- EMI — the fixed monthly payment
- P — the loan amount
- r — the monthly interest rate (annual rate ÷ 12, as a decimal)
- n — the total number of monthly payments (loan term in years × 12)
Worked example
Suppose you take out a $20,000 loan at 6% annual interest over 5 years:
- Monthly interest rate: 6% ÷ 12 = 0.5%
- Number of payments: 5 × 12 = 60
- Monthly EMI: $386.66
- Total repaid: $23,199.36
- Total interest: $3,199.36
Try these exact numbers in the calculator above to see the full amortization schedule.