Loan Calculator

What is a loan calculator?

A loan calculator shows what a loan will really cost. Enter the amount you want to borrow, the yearly interest rate and the length of the loan, and it gives you the monthly payment, the total interest and the total amount you will repay. Many countries call the monthly payment an EMI, short for equated monthly installment.

Use it before you apply for a loan. It helps you compare offers, check whether a payment fits your monthly budget and see how much of your money goes to interest instead of the amount you borrowed.

How is the monthly payment (EMI) calculated?

For a normal loan with a fixed rate and equal payments, the monthly payment follows this formula: EMI = P x r x (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 payments.

Take a loan of 10,000 at 12 percent a year for one year. The monthly rate is 0.01 and there are 12 payments, so the EMI is 888.49. Over the year you repay 10,661.85, which means the interest is 661.85. If the interest rate is zero, the payment is simply the loan amount divided by the number of months.

How the loan term and the interest rate change the cost

A longer loan gives a smaller monthly payment, but you pay much more interest. Borrow 200,000 at 6 percent for 20 years and the payment is about 1,432.86 a month, with about 143,900 in total interest. Borrow the same amount over 30 years and the payment falls to about 1,199.10, but the interest grows to about 231,700.

The interest rate matters just as much. A difference of one or two percentage points can add or save thousands over the life of a loan, so a small rate difference between two lenders is worth checking. Change the numbers in the calculator to see the effect immediately.

Understanding the repayment schedule

Each payment has two parts: interest on the balance you still owe, and a repayment of the principal. In the early years the balance is large, so most of the payment is interest. As the balance shrinks, the interest part falls and more of every payment reduces the principal.

The yearly schedule under the calculator shows how much principal and interest you pay each year and what balance remains. It also shows why paying off a loan early, or making extra payments in the first years, saves so much interest.

Ways to pay less interest

• Choose a shorter term: A shorter loan means higher payments but far less total interest.
• Make a bigger down payment: Borrowing less reduces both the payment and the interest.
• Compare lenders: Check the interest rate and the total cost, not only the monthly payment.
• Pay extra when you can: Extra money towards the principal shortens the loan and cuts interest, if your lender allows it without a penalty.
• Improve your credit profile first: A stronger credit history often leads to a lower rate.
• Refinance when rates fall: Moving to a cheaper loan can lower your payments, after you count any fees.

Which loans can you check?

The calculator works for any loan that has a fixed rate and equal monthly payments:

• Car loans: Check the payment for a new or used vehicle before you visit a dealer.
• Home loans and mortgages: Estimate the principal and interest part of your payment. Property tax and insurance are not included.
• Personal loans: Compare offers for weddings, travel, repairs or debt consolidation.
• Student loans: See what repayment will look like after you finish studying.
• Business loans: Estimate the monthly cost of equipment or working capital.

What a loan calculator cannot show

The result is an estimate. Lenders may add processing fees, insurance or taxes, and some use different methods, such as a flat rate on the original amount, a variable rate that changes over time, or an interest-only period. Islamic financing uses a profit rate instead of interest, and the payments can be set up differently.

Use the calculator to compare options and plan your budget, and confirm the final figures with your lender. This tool gives general information and is not financial advice.

Common loan mistakes to avoid

• Looking only at the monthly payment: A low payment on a very long loan can cost far more in total.
• Ignoring fees: Application, processing and early repayment fees add to the real cost.
• Mixing flat and reducing rates: A flat rate is calculated on the full amount for the whole term, so it costs more than the same number as a reducing balance rate.
• Mixing up years and months: Check the unit of the loan term before you read the result.
• Borrowing the maximum: Leave room in your budget for other expenses and for surprises.

Why use our free loan calculator?

• Clear results: Monthly payment, total interest and total cost in one view.
• Full schedule: A yearly table shows how the balance falls.
• Any currency: Pick a symbol or use none. The maths is the same everywhere.
• Private: Your numbers stay in your browser and are never uploaded.
• Free: No signup, no limits and nothing to install.