How the EMI calculator works
An EMI (equated monthly instalment) is the fixed amount you pay your lender every month until a loan is fully repaid. Each EMI has two parts: interest on the balance you still owe, and a slice of the principal. In the early years most of the EMI goes towards interest; as the balance falls, the interest part shrinks and more of each payment reduces the principal. This calculator works out the EMI, then builds the complete repayment schedule month by month so you can see that shift happen.
The EMI formula in plain words
EMI = P × r × (1 + r)n ÷ ((1 + r)n − 1)
Here P is the loan amount, r is the monthly interest rate (the yearly rate divided by 12 and by 100), and n is the number of monthly instalments. If the interest rate is zero, the EMI is simply the loan amount divided by the number of months.
Worked example
Say you borrow ₹25,00,000 as a home loan at 8.5% a year for 20 years (240 months). The monthly rate is 8.5 ÷ 12 ÷ 100 = 0.0070833.
- Monthly EMI: ₹21,696 (₹21,695.58)
- Total interest over 20 years: ₹27,06,939
- Total amount paid: ₹52,06,939
In the very first month, ₹17,708 of the EMI is interest and only ₹3,987 repays principal. Cutting the tenure to 15 years raises the EMI to ₹24,618 but saves about ₹7.75 lakh in interest.
Tips to reduce your loan cost
- Choose the shortest tenure you can comfortably afford. A higher EMI over fewer years almost always means far less total interest.
- Prepay early. Extra payments in the first few years cut the principal when interest is highest. For floating-rate loans taken by individuals, Indian banks generally cannot charge a prepayment penalty.
- Compare the interest rate, not just the EMI. Even a 0.5% lower rate on a large home loan saves lakhs over 20 years.
- Keep EMIs within about 40% of your take-home pay so the loan stays manageable if expenses rise.
- Check processing fees and insurance add-ons, which are not part of the EMI but add to the real cost of borrowing.
Use the yearly and monthly amortization tables above to see how your balance falls, and download the full schedule as a CSV file to open in Excel or Google Sheets.
Frequently asked questions
What is EMI?
EMI stands for equated monthly instalment. It is the fixed amount you pay your lender each month, made up of interest on the outstanding balance plus a part of the principal, until the loan is fully repaid.
How is EMI calculated?
EMI = P × r × (1 + r)^n ÷ ((1 + r)^n − 1), where P is the loan amount, r is the monthly interest rate (annual rate ÷ 12 ÷ 100) and n is the number of months. This calculator applies the formula instantly and also builds the full amortization schedule.
Does a longer tenure reduce my EMI?
Yes. A longer tenure lowers the monthly EMI, but you pay interest for more months, so the total interest rises sharply. Use the tenure slider to compare the trade-off.
Can I use this for home, car and personal loans?
Yes. The EMI formula is the same for any loan with a fixed interest rate and equal monthly payments, including home loans, car loans, personal loans and education loans.
Is the EMI shown here exactly what my bank will charge?
It will be very close for a fixed-rate loan. Banks may differ slightly due to rounding, the date of the first EMI, broken-period interest or fees. For floating-rate loans the EMI or tenure changes when the rate changes.
What is an amortization schedule?
It is a table showing every payment over the life of the loan, split into interest and principal, along with the balance remaining after each payment. You can view it yearly or monthly above and download it as a CSV file.