EMI / Loan Calculator
Work out your monthly EMI, total interest, and total repayment for a loan.
Enter the loan amount, annual interest rate, and tenure in months or years, and this tool calculates your fixed monthly instalment (EMI) using the standard amortising loan formula, along with the total interest you'll pay over the life of the loan and the overall repayment amount — useful for comparing loan offers or budgeting before you borrow.
Why EMI stays fixed even though the interest portion changes each month
In an amortising loan, each fixed monthly payment is split between interest and principal, but that split shifts over time — early payments are weighted heavily toward interest since the outstanding balance is largest then, while later payments pay down more principal since less interest accrues on the shrinking remaining balance. The total EMI itself stays constant throughout specifically so borrowers can budget around one predictable number, even though what that number represents internally changes every month.
Why a slightly lower interest rate matters more than it seems over a long tenure
Because interest compounds against the outstanding balance every month over potentially many years, even a seemingly small difference in interest rate — half a percentage point, say — can add up to a substantial difference in total interest paid over a 20 or 30-year loan. This is exactly why comparing the total interest and total repayment figures between loan offers, not just the headline interest rate, gives a clearer picture of which offer is actually cheaper overall.
What this calculator does and doesn't account for
This calculates the core EMI based purely on principal, interest rate, and tenure using the standard fixed-rate amortisation formula — it doesn't include processing fees, insurance premiums, or any prepayment penalties a specific lender might charge, all of which can meaningfully affect the true cost of a loan beyond just the EMI figure shown here.
How to use it
- Enter the loan amount you're borrowing.
- Enter the annual interest rate (%).
- Enter the loan tenure in months or years.
- The EMI, total interest, and total repayment appear instantly.
Common ways people use this tool
Comparing offers from different lenders
Plug in the rate and tenure from two competing loan offers to see which actually results in lower total interest paid.
Budgeting before taking out a personal loan
Check what monthly EMI a specific loan amount and tenure would require, to confirm it fits comfortably within your monthly budget.
Estimating a mortgage's long-term cost
See the full total repayment amount over a long mortgage tenure, not just the monthly payment figure, to understand the loan's true overall cost.
Tips for getting the best results
- Compare total interest paid, not just the monthly EMI figure, when evaluating two different loan offers with different tenures.
- Remember a longer tenure lowers your monthly EMI but increases total interest paid over the life of the loan.
- Factor in any processing fees or insurance separately, since this calculator only reflects principal, rate and tenure.
- If a lender offers to reduce EMI by extending tenure, check the total repayment figure to see the real cost of that trade-off.
Frequently asked questions
What formula is used to calculate EMI?
EMI = P × r × (1+r)^n / ((1+r)^n − 1), where P is principal, r is the monthly interest rate, and n is the number of monthly instalments — the standard formula for amortising fixed-rate loans.
Does this account for processing fees or insurance?
No, this calculates the core EMI, interest and repayment based only on principal, rate and tenure; any additional fees your lender charges aren't included.
Can I use this for a mortgage as well as a personal loan?
Yes, the same amortising formula applies to any fixed-rate instalment loan, including mortgages, car loans and personal loans.
Why does a longer loan tenure result in more total interest?
A longer tenure spreads the principal repayment over more months, meaning the outstanding balance (and therefore the interest calculated against it) stays higher for longer overall, even though each individual monthly payment is smaller.
Does prepaying a loan early reduce the total interest paid?
Generally yes, since prepayment reduces the outstanding principal balance sooner, which reduces the interest calculated in all subsequent months — though some lenders charge prepayment penalties that can offset part of that saving.
Is EMI the same thing as a mortgage payment?
EMI (Equated Monthly Instalment) is a general term for a fixed periodic loan payment, commonly used in South Asian and some other markets; a mortgage payment in Western markets typically follows the same underlying amortisation math.
Can this calculator handle variable or floating interest rates?
No, this assumes a fixed interest rate throughout the tenure; a floating-rate loan's actual payments would change over time as the rate changes, which this simple calculator doesn't model.
Why do two loans with the same EMI sometimes have very different total costs?
Two loans can arrive at a similar EMI through different combinations of principal, rate, and tenure — always compare the total repayment figure directly, since an identical monthly payment doesn't guarantee an identical overall cost.
Does making an extra lump-sum payment reduce future EMIs or shorten the loan term instead?
This depends on the specific lender's policy — some reduce the remaining EMI amount while keeping the same tenure, others keep the EMI the same but shorten the tenure; this calculator only models the standard fixed schedule without either adjustment.