EMI means Equated Monthly Instalment. It is the same payment every month until the loan is repaid. The calculator has three values. Each one has a slider and a box where you can type the exact number. Move a slider or type in a box, and the results change at once. Moving a slider updates its box, and typing in a box moves its slider.
You get three results, each rounded to a whole dollar: Monthly EMI, Total Interest and Total Payment (loan amount + total interest). The dollar sign is only a label. The math works the same for rupees or any other currency.
Typing is easier than dragging on a phone, and it gives exact values. If a typed value is outside the range, or the term is not a whole number, a short note appears and the results show a dash until you fix it. When you leave the box, a number out of range moves to the nearest allowed value, and an empty box goes back to the last good value. When you type a value between two slider steps, such as 123456, the slider moves to the nearest step, but the maths uses the exact number you typed.
The tool uses the standard reducing-balance formula. Interest is charged each month only on the amount you still owe.
These are the values the calculator starts with: $100,000 at 8% a year for 20 years.
Total Payment uses the exact EMI, not the rounded one. If you multiply the rounded $836 by 240, you get $200,640, which is $106 less.
Every EMI is the same, but what it pays for changes. In month 1 you owe the full $100,000, so the interest is 100,000 × 0.0066667 = $666.67. Only $169.77 of the $836.44 goes to reduce the loan. As the balance goes down, the interest part shrinks and the principal part grows. The table uses the same loan.
| Year | Interest paid that year | Principal paid that year | Interest share |
|---|---|---|---|
| 1 | $7,924 | $2,114 | 78.9% |
| 5 | $7,130 | $2,908 | 71.0% |
| 10 | $5,705 | $4,332 | 56.8% |
| 15 | $3,583 | $6,454 | 35.7% |
| 20 | $422 | $9,616 | 4.2% |
After 10 years, half the payments are made, but you still owe $68,941. The balance falls below half the loan only after month 164, about 13 years and 8 months in. The calculator does not show this month-by-month split. The table was worked out with the same formula and rate.
A longer term lowers the EMI, but you pay interest for more months. Here is $100,000 at 8% with different terms, as the calculator shows them:
| Loan Term | Monthly EMI | Total Interest | Total Payment |
|---|---|---|---|
| 5 years | $2,028 | $21,658 | $121,658 |
| 10 years | $1,213 | $45,593 | $145,593 |
| 15 years | $956 | $72,017 | $172,017 |
| 20 years | $836 | $100,746 | $200,746 |
| 25 years | $772 | $131,545 | $231,545 |
| 30 years | $734 | $164,155 | $264,155 |
Going from 20 to 30 years saves only $102 a month, but it adds $63,409 of interest. The rate matters a lot too. At 20 years, the same loan costs $716 a month at 6% and $1,101 a month at 12%.
Some car loans, personal loans and small lenders quote a flat rate. With a flat rate, interest is charged on the full loan amount for the whole term, even after you have repaid part of it. $100,000 at 8% flat for 5 years means 100,000 × 8% × 5 = $40,000 of interest, and an EMI of $140,000 ÷ 60 = $2,333.33. The same 8% in this calculator gives $2,028 and $21,658 of interest. The flat 8% loan costs about the same as a 14.1% reducing-balance loan. If a lender quotes a flat rate, compare the EMI, not the rate.
This is an estimate to help you compare loans. It is not financial advice. Your lender's schedule is the one that counts. Real payments can differ because of:
It uses the reducing-balance formula: EMI = P × r × (1 + r)^n ÷ ((1 + r)^n − 1). P is the loan amount, r is the yearly rate divided by 12 and by 100, and n is the number of months. For $100,000 at 8% for 20 years, the EMI is $836.44, shown as $836.
Interest is charged on the amount you still owe, and at the start you owe the most. On $100,000 at 8% for 20 years, the first EMI of $836.44 has $666.67 of interest and only $169.77 of principal. In the first year, about 79% of what you pay is interest. In the last year it is about 4%.
A longer term lowers the EMI but raises the total interest. For $100,000 at 8%, 20 years costs $836 a month and $100,746 in interest. 30 years costs $734 a month but $164,155 in interest. Choose the shortest term whose EMI you can pay comfortably.
No. A flat rate charges interest on the full loan for the whole term. $100,000 at 8% flat for 5 years costs $40,000 in interest, with an EMI of $2,333.33. This calculator uses a reducing balance, where 8% for 5 years costs $21,658. The flat 8% loan is about the same as 14.1% on a reducing balance.
No. The calculator only uses the loan amount, one fixed yearly rate and the term. Fees, insurance, taxes, rate changes and extra payments are not included. Treat the result as an estimate and ask your lender for the full repayment schedule.
Banks can count interest by the day, round the EMI up to the next whole unit, charge interest for the days before your first EMI, or adjust the last payment. These small differences are normal. This calculator uses the standard monthly formula and rounds results to whole dollars.