EMI Calculator

Banks use the standard amortization formula: EMI = P x r x (1 + r)^n / ((1 + r)^n - 1), where P is the principal amount, r is the monthly interest rate (annual rate divided by 12 and then by 100 to get a decimal), and n is the total number of monthly payments. For example, a $100,000 loan at 8% annual interest for 5 years (60 months) gives r = 0.00667, resulting in an EMI of about $2,028. The total repayment would be $121,680, meaning $21,680 goes to interest. Online calculators and Excel's PMT function use this same formula.

Yes, most lenders allow prepayment, and it can save you a substantial amount of interest. When you make a prepayment, the amount goes directly toward reducing your principal balance. Since interest is calculated on the remaining principal, a lower balance means less interest accrues every month. For example, on a $200,000 loan at 7.5% over 20 years, a one-time prepayment of $20,000 early in the loan term could save you roughly $35,000-$40,000 in total interest and cut 2-3 years off your tenure. However, some lenders charge a prepayment penalty (typically 1-3% of the prepaid amount), so always check your loan agreement before making extra payments.

Your EMI is determined by three variables: the loan amount (principal), the interest rate, and the tenure. The loan amount has a direct proportional effect — borrow 20% more, pay roughly 20% more each month. The interest rate has a compounding effect: a seemingly small difference of 0.5% on a 20-year home loan can add up to tens of thousands in extra interest. The tenure has an inverse relationship: longer tenure means lower monthly EMIs but dramatically more total interest. For instance, a $100,000 loan at 8% costs about $2,028/month for 5 years (total interest $21,680) vs. $955/month for 10 years (total interest $46,600). Doubling the tenure doesn't halve the total interest — it more than doubles it.

It depends on your monthly budget and financial goals. A shorter tenure means higher monthly EMIs but you'll pay far less interest overall and own your asset sooner. A longer tenure keeps monthly payments manageable but you'll pay significantly more over the life of the loan. A good rule of thumb: keep your total EMIs (all loans combined) under 40-50% of your monthly take-home income. If you can comfortably afford higher payments, choose the shortest tenure you can manage — the interest savings are substantial. If cash flow is tight, opt for a longer tenure and make periodic prepayments when you have extra funds.

This calculator uses the exact same mathematical formula that banks use, so the core EMI figure should match precisely. Small differences may arise from how individual lenders handle processing fees, rounding conventions, or whether they use a 360-day vs. 365-day year for daily interest calculations. Some banks also add insurance premiums or administrative charges to the EMI. For the most accurate figure, check your loan agreement's amortization schedule, but this calculator will give you a reliable estimate within $1-$5 of the bank's number for typical loan products.

With a fixed-rate loan, your interest rate stays the same throughout the entire tenure, so your EMI never changes — this makes budgeting predictable but you might miss out if market rates drop. With a floating-rate loan (also called variable or adjustable rate), the bank can change the interest rate based on market conditions, which means your EMI or tenure may increase or decrease during the loan. In a rising rate environment, floating-rate borrowers might see their EMI jump by 10-25%. Most home loans today are floating-rate. Use this calculator with the current rate, but build in a buffer of 1-2 percentage points to see your worst-case EMI scenario.