EMI stands for Equated Monthly Instalment. It is a fixed amount paid by a borrower to a lender every month on a fixed date. Each EMI includes both a principal repayment component and an interest component.

How is EMI calculated?

EMI is calculated using the formula: EMI = P × r × (1+r)^n / ((1+r)^n - 1), where P is the principal loan amount, r is the monthly interest rate (annual rate divided by 12 divided by 100), and n is the number of monthly instalments.

EMI Calculator — Calculate Loan EMI Instantly

Loan amount

Annual interest rate

Loan tenure

Your monthly income (for affordability check)

₹

Monthly EMI

₹43,391

for 240 months · 20 years

Principal

₹50L

Total interest

₹54.1L

Total payment

₹1.04Cr

Principal vs interest breakdown

Principal 48%

Interest 52%

EMI vs income ratio ✅ 28.9% — safe

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EMI reference table — Home loan at 8.5%

Loan amount	10 years	15 years	20 years	30 years

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What is EMI?

EMI stands for Equated Monthly Instalment. It is a fixed payment amount made by a borrower to a lender at a fixed date each month. EMIs are used to pay off both the interest and the principal amount of a loan over a specified period.

Each EMI consists of two parts: the principal component (which reduces your outstanding loan balance) and the interest component (which is the cost of borrowing). In the early months of a loan, the interest component is higher. As the loan matures, the principal component gradually increases.

EMI formula — how it's calculated

The EMI formula is:

EMI = P × r × (1+r)^n / ((1+r)^n − 1)

Where:

P = Principal loan amount
r = Monthly interest rate = Annual rate ÷ 12 ÷ 100
n = Number of monthly instalments = Years × 12

For example: A ₹50 lakh home loan at 8.5% for 20 years: r = 8.5/12/100 = 0.00708, n = 240. EMI = 50,00,000 × 0.00708 × (1.00708)^240 / ((1.00708)^240 − 1) = ₹43,391.

Factors that affect your EMI

Loan amount: Higher principal = higher EMI. The most direct relationship.
Interest rate: Even a 0.5% difference in rate significantly changes the total interest paid over a long tenure.
Loan tenure: Longer tenure = lower EMI but significantly higher total interest. Shorter tenure = higher EMI but lower total cost.
Type of interest: Most Indian loans use reducing balance interest, which is what this calculator uses. Flat rate interest (used in some personal loans) results in higher effective cost.

How to reduce your EMI burden

Make a larger down payment: Reducing the principal reduces your EMI proportionally.
Negotiate a lower interest rate: Even 0.25% less can save lakhs over a 20-year home loan.
Choose a longer tenure carefully: Lower EMI sounds attractive but you'll pay significantly more in total interest.
Make prepayments: Any extra payment goes directly toward the principal, reducing future interest. Even ₹5,000 extra per month on a home loan can save ₹10+ lakhs in interest.
Refinance if rates drop: If home loan rates drop significantly after you've taken a loan, refinancing can reduce your EMI or tenure.

EMI-to-income ratio — how much is too much?

Financial advisors recommend keeping your total EMI obligations below 40-50% of your monthly take-home income. A ratio below 30% is considered comfortable, 30-40% is manageable, and above 50% puts you at financial risk if any unexpected expense arises.

This calculator shows your EMI-to-income ratio automatically once you enter your monthly income.

Frequently asked questions

What happens if I miss an EMI payment?

Missing an EMI payment typically incurs a late payment penalty (usually 1-2% of the EMI amount), negatively impacts your CIBIL credit score, and can trigger additional interest charges on the overdue amount. After multiple missed payments, the lender can classify the loan as a Non-Performing Asset (NPA) and begin recovery proceedings.

What is the difference between flat rate and reducing balance EMI?

In the flat rate method, interest is calculated on the original principal throughout the loan tenure. In the reducing balance method (used by most banks), interest is calculated only on the outstanding principal after each payment. The reducing balance method is cheaper — a flat rate of 10% is roughly equivalent to a reducing balance rate of 18-19%.

Can I change my EMI amount after taking a loan?

You can't directly change the contracted EMI, but you can effectively reduce your future EMIs by making prepayments toward the principal. After a substantial prepayment, you can request the lender to either reduce the EMI (keeping tenure constant) or reduce the tenure (keeping EMI constant). Reducing tenure saves more interest overall.

Is it better to pay a higher EMI or a longer tenure?

Higher EMI with shorter tenure is almost always better from a financial standpoint — you pay significantly less total interest. Choose a longer tenure only if the higher EMI would strain your monthly budget. Use the extra payment feature in this calculator to see exactly how much you save by paying extra each month.

What is a moratorium period?

A moratorium period (also called an EMI holiday) is a period at the start of a loan during which you don't pay EMIs. Common with education loans (you start paying after you get a job) and sometimes offered during financial hardship. During the moratorium, interest typically continues to accrue and is added to the principal — meaning you pay more overall.

How does prepayment affect my loan?

Any prepayment goes directly toward reducing the outstanding principal. This reduces the base on which future interest is calculated — so the interest saved is compounding. Even a single annual lump sum prepayment equal to one EMI can reduce a 20-year home loan by 2-3 years. RBI guidelines prohibit prepayment penalties on floating-rate home loans.