How Loan EMI Is Calculated: Monthly Payment, Interest and Total Cost

Before you borrow, the most useful number is not the loan amount but the monthly payment and the total you will pay back. A loan that looks affordable per month can cost far more than you expect once the interest of many years is added. Working it out takes seconds with the free Loan and EMI Calculator.

Quick answer

Enter the loan amount, the yearly interest rate and the number of years. The calculator shows the monthly payment (EMI), the total interest and the total you will pay back. It works in pounds, dollars or taka.

What is an EMI?

EMI stands for equated monthly instalment: a fixed amount paid every month that covers both the interest and a part of the borrowed amount. In the early months most of each payment is interest; later, more of it repays the loan itself. The amount you pay each month stays the same, which makes budgeting easy.

The three things that decide the payment

1. The loan amount. More borrowed means a larger payment, in direct proportion.
2. The interest rate. A higher yearly rate raises both the monthly payment and the total interest.
3. The term. A longer term lowers the monthly payment but increases the total interest, sometimes dramatically.

A worked example

Take a loan of 200,000 at 5.5 percent yearly interest over 25 years, the example shown in the calculator above. The monthly payment is about 1,228, the total interest about 168,000 and the total repaid about 368,000. In other words you repay almost double the amount you borrowed, simply because of the long term.

Now shorten the term to 15 years. The monthly payment rises, but the total interest falls by a large amount. The only way to see this clearly is to try different terms, which is exactly what the calculator is for.

How to use the calculator, step by step

1. Open the Loan and EMI Calculator.
2. Enter the loan amount.
3. Enter the yearly interest rate as a percentage.
4. Enter the number of years.
5. Choose your currency.
6. Read the monthly payment, total interest, total to pay back and number of payments.

Practical tips before you borrow

• Compare total cost, not only the monthly payment. Two loans with the same payment can have very different total interest.
• Try a shorter term if you can afford the higher payment. The saving in interest is often large.
• Ask about fees. The calculator estimates a fixed-rate repayment loan. Arrangement fees, insurance and rate changes are not included.
• Check whether the rate is fixed or variable. A variable rate can change your payment later.
• Keep a buffer. Your payments should fit comfortably within your budget even if something unexpected happens.

Loans, mortgages and car finance

The same maths applies to personal loans, car finance and mortgages. For a home loan with a deposit, the Mortgage Calculator takes the property price and deposit into account. To see how savings grow instead of how debt costs, read about compound interest.

EMI, reducing balance and flat rate

Be careful with how a lender quotes its rate:

• Reducing balance rate: interest is charged on the outstanding balance, which falls over time. The EMI formula in the calculator assumes this.
• Flat rate: interest is charged on the original amount for the whole term, even as you repay. A flat rate of 8 percent costs much more than a reducing-balance rate of 8 percent.

When comparing offers, ask for the annual percentage rate (APR) or the total repayment, so the numbers are comparable.

How early repayment changes the cost

Because interest is charged on the outstanding balance, paying extra early cuts the interest that follows. Examples of strategies:

• Make a lump-sum payment from a bonus or savings.
• Increase the monthly payment a little, even by 5 to 10 percent.
• Pay bi-weekly instead of monthly if your lender allows it.

Check whether your lender charges a prepayment penalty, and whether the extra goes to the principal.

Questions to answer before borrowing

1. Do I need this loan, or can I save for it?
2. Can I afford the EMI if my income drops for a few months?
3. What is the total cost compared with the price of the item?
4. Are there processing fees, insurance or penalties?
5. Is the rate fixed or variable?
6. What happens if I miss a payment?

A common guideline is to keep total monthly debt payments below about a third of your income.

Different loans, same maths

• Home loan: long terms, lower rates, large amounts.
• Car loan: medium terms, secured by the vehicle.
• Personal loan: short terms, higher rates, unsecured.
• Education loan: sometimes with a grace period before payments begin.
• Credit cards: very high rates; pay in full each month when possible. See the Credit Card Payoff Calculator.

Quick checklist

1. Write down the amount, rate and term.
2. Calculate the EMI and total cost.
3. Try a shorter term and compare.
4. Add fees to the cost.
5. Check that the EMI fits comfortably in your monthly budget.

Frequently asked questions

Is the result exact? It is an estimate for a fixed-rate repayment loan. Your lender's figures may differ because of fees and rounding.

Why is the total so much higher than the amount I borrow? Because interest is charged on the outstanding balance every month for the whole term.

Does a longer term save money? It lowers the monthly payment but increases the total interest paid.

Can I use it for taka? Yes. Choose the currency you need.

Is it free? Yes. It runs in your browser and nothing is sent anywhere.

What is the difference between flat and reducing rates? A flat rate charges interest on the original amount throughout; a reducing rate charges on the remaining balance.

Does paying extra reduce the EMI or the term? It depends on the lender. Ask whether the extra shortens the term or the payment.

What is a good EMI share of income? Many advisers suggest keeping all EMIs below about one third of your income.

What is a good loan term? The shortest term you can comfortably afford usually costs the least in interest.

Can the EMI change during the loan? With a variable rate, yes. Ask the lender.

Next step

Open the Loan and EMI Calculator below and try three different terms for your loan. The comparison takes a minute and can save a lot of money.