Loan Calculator

 How does a loan calculator work?

For example, suppose you take out a car loan of $25,000 for 5 years at an annual interest rate of 9%. Enter these figures into the box above, and you will instantly see your monthly payment—no sign-up or email required. It works the same way for personal loans, student loans, or business loans, as they all rely on the same fixed-rate calculation method.

The formula behind it

M = P × [r(1+r)^n] / [(1+r)^n − 1]

M is your monthly payment, P is the amount you borrowed, r is your monthly interest rate (annual rate ÷ 12), and n is the total number of payments. You don't need to do this manually—that’s the whole point of the calculator—but understanding what actually happens when you move the slider is helpful.

Why your payment changes when the numbers change

Borrowing more increases the payment—that’s obvious. However, the interest rate is how lenders actually make money, and it depends largely on your credit score. A borrower with a score of 750+ might get a rate of 8%, whereas someone with a score of 620 could be quoted 14% or higher for the same loan. This difference alone can result in a variation of over ₹50,000 in the total interest paid on a ₹5 lakh loan.

Extending the loan tenure might seem helpful because it lowers the monthly payment. While that is true, you pay a price for that relief. Compared to a 3-year loan, taking the same amount over 5 years could result in paying up to double the total interest. What actually lowers your payment?

Two things have the biggest impact: making small extra payments toward the principal each month (even paying an extra ₹2,000–3,000 significantly accelerates interest reduction), and checking your credit report *before* applying for the loan, not after. Many people simply accept the quoted rate, only to realize later that their credit score qualified them for a better one.

Commonly asked questions

Should I pay off my loan early if I can? 

If there is no prepayment penalty (check your loan agreement—this is usually stated in the fine print), then yes—almost always. Paying early yields the greatest savings because that is when the balance is accruing the most interest.

With a fixed rate, the interest rate is locked in for the entire loan term, so your payment never changes. A variable rate might start lower but fluctuates based on market conditions; this is fine if you plan to pay off the loan quickly, but it carries more risk if you intend to carry the loan over several years.

Yes—this strategy works as long as it is a standard fixed-rate, amortized loan (which includes most personal, auto, student, and business loans).