Interest Calculator

Calculate the monthly interest payable and plan your loan repayment with ease

What is an interest rate calculator?

An interest rate calculator is a tool used to determine the amount of interest earned or paid on a financial transaction. It allows users to input variables such as principal amount, interest rate, time, and compounding frequency to calculate the accrued interest accurately. With the help of our loan interest calculator, your monthly interest calculation can be done effortlessly. You get to know exactly how much you are liable to pay as interest throughout the personal loan tenure. Enter a few relevant details about the credit you need and acquire in-depth information regarding EMI, total interest payable and more.

How to calculate interest on loan using Bajaj Finserv interest calculator?

The online monthly interest calculator ensures quick computation on how to calculate interest and EMIs from the comfort of your home, without needing to manually input the interest calculator formula. Using a Bajaj Finance loan interest rate calculator is simple, with the interface being user-friendly. Here is how to use an interest rate calculator in three simple steps:

Step 1: Enter the loan amount you want to avail.
Step 2: Next, enter the rate of interest on your loan.
Step 3: Select the repayment period you wish to opt for and get accurate results instantly.

Using the manual formula reverse calculation is also possible, i.e., you can calculate rate of interest from EMI amount, tenure, and total amount.

Methods of calculating interest

The two primary methods of calculating the interest are simple interest rates and compound interest rates.

1. Simple interest

Simple interest is a straightforward method of calculating interest earned or paid on a principal amount. It remains constant throughout the period and is calculated solely on the initial principal. A higher simple interest rate on the principal amount can provide better returns on investments and vice versa. Unlike compound interest, there's no consideration of interest earned or paid in previous periods. It's commonly used for short-term loans or investments where interest doesn't compound over time.

Simple interest formula

Here is the mathematical formula, on which a simple interest calculator works to compute the loan amount:

A = P (1+RT)

To calculate Interest Paid on a loan, the formula is

Interest = A – P.

Where,

  • A = Total Amount Paid
  • P = Principal Amount
  • R = Rate of Interest
  • T = Number of years

Simple interest example

Suppose you borrow Rs. 100,000 at a simple interest rate of 10% per annum for five years. The simple interest calculation yields Rs. 50,000 in interest, resulting in a total repayment of Rs. 150,000. Unlike compound interest, simple interest remains constant throughout the loan term, resulting in a straightforward repayment structure. This example illustrates the simplicity of calculating and understanding simple interest on loans in India, making it easier for borrowers to plan their repayments accurately without the complexities of compounding.

2. Compound interest

Compound interest is a method of calculating interest on an initial principal amount, including interest accumulated from previous periods. As time progresses, the interest is added to the principal, leading to exponential growth. Compound interest is commonly used in long-term investments, savings accounts, and loans, maximising returns over time.

Compound interest formula

Here is the mathematical formula, on which a compound interest calculator works to compute loan amount:

A = P (1 + r/n) ^ nt

To calculate Interest Paid on a loan, the formula is

Interest = A – P.

  • A = Total Amount Paid
  • P = Principal Amount
  • R = Rate of Interest
  • N = number of times interest is compounded per year
  • T = Number of years

Compound interest example

Let's say you borrow Rs. 100,000 at an annual interest rate of 10% with quarterly compounding. Over five years, the compound interest formula yields Rs. 61,051.02 in interest, resulting in a total repayment of Rs. 161,051.02. Compound interest in India, as elsewhere, amplifies the total repayment due to the effect of interest compounding periodically, demonstrating the significance of understanding compound interest in financial planning.

Difference between simple interest and compound interest

Aspect

Simple interest

Compound interest

Calculation method

Calculated solely on the principal amount invested or borrowed.

Calculated on both the principal amount and the accumulated interest over time, resulting in interest on interest.

Formula

Simple Interest = Principal × Rate × Time

Compound Interest = Principal × (1 + Rate)^Time - Principal

Growth pattern

Linear growth pattern; interest remains constant throughout the investment or loan period.

Exponential growth pattern; interest accumulates over time, leading to a larger amount than simple interest for the same principal.

Impact on returns

Generally results in lower returns compared to compound interest, especially over longer periods.

Typically leads to higher returns compared to simple interest, particularly over extended durations, due to compounding effects.

Frequency of interest

Interest is calculated only once at the end of the investment or loan period.

Interest is calculated periodically, such as annually, semi-annually, quarterly, or monthly, and added to the principal for future calculations.


Read more: Difference between simple interest and compound interest

Advantages of using a loan interest rate calculator

Using an interest calculator to compute EMIs offers quick, accurate results, helping you plan your finances better before you apply for personal loan. It allows you to compare loan options and choose the most affordable one. Interest calculator for loan is a helpful tool to understand the total cost of borrowing. Here are some benefits of utilising our interest calculator:

  • Accuracy: Our interest calculator ensures precise calculations, offering accurate figures for interest and repayments, eliminating errors and providing reliable financial insights.
  • Time efficiency: With swift result generation, borrowers save time, enabling them to make informed decisions promptly without delays in their financial planning or loan application processes.
  • Financial planning: By providing accurate repayment estimates, our calculator assists borrowers in planning budgets effectively, ensuring they can manage their finances efficiently and meet their repayment obligations.
  • Comparison tool: Borrowers can easily compare loan offers from different lenders using our calculator, facilitating informed decisions based on interest rates, repayment terms, and overall borrowing costs, optimizing their loan selection process.
  • Cost-effectiveness: Our interest calculator and personal loan calculator helps borrowers minimise overall borrowing costs by allowing them to evaluate various loan options and choose the most cost-effective solution tailored to their financial needs and capabilities.
  • Informed decisions: Empowering borrowers with comprehensive information, our calculator equips them to make informed decisions regarding loans, enabling them to choose the most suitable options aligned with their financial goals and circumstance. Interest amount calculators help in understanding the total cost of borrowing and enables in better decision-making.

Uncontrollable economic factors that affect interest rate

Several uncontrollable economic factors influence interest rates, impacting both borrowers and lenders:

  • Inflation: Higher inflation rates often lead to higher interest rates as lenders need to compensate for the decreased purchasing power of money over time.
  • Economic growth: Strong economic growth increases the demand for credit, leading to higher interest rates as borrowers compete for available funds.
  • Central Bank policies: Central banks, like the Reserve Bank of India, set benchmark interest rates based on economic conditions. Changes in these rates directly impact lending rates across the economy.
  • Global economic conditions: International economic stability and trends can affect domestic interest rates. For instance, economic turmoil in major economies can lead to increased interest rates due to higher perceived risks.
  • Government borrowing: High levels of government borrowing can drive up interest rates as the government competes with the private sector for available funds, reducing the supply of credit for other borrowers.
  • Exchange rates: Fluctuations in currency exchange rates can affect interest rates, especially in economies with significant foreign investment. A weaker currency might lead to higher interest rates to attract foreign capital.

These factors are beyond the control of individual borrowers but significantly influence the cost of borrowing.Ensure you use a basic interest calculator to understand the total cost of borrowing when you consider any type of loan.

Controllable factors that determine interest rate

Several controllable factors can influence the interest rate on loans, allowing borrowers to potentially secure better rates:

  • Credit Score: A higher credit score indicates a borrower’s reliability, often leading to lower interest rates as lenders perceive less risk.
  • Income Level: Steady and higher income levels can lead to more favorable interest rates since they demonstrate the borrower’s ability to repay the loan.
  • Debt-to-Income Ratio: A lower debt-to-income ratio suggests better financial health, making lenders more likely to offer lower interest rates due to reduced risk when they lend money to borrowers.
  • Loan Amount: The size of the loan can affect the interest rate. Larger loans might attract lower rates if they are perceived as less risky by the lender.
  • Loan Tenure: Shorter loan tenures often come with lower interest rates since the risk of default decreases over a shorter repayment period.
  • Collateral: Secured loans backed by collateral generally have lower interest rates because the lender has an asset to claim in case of default. Using a collateral for borrowed money can get better terms, however the process may take some time.
  • Relationship with the Lender: Existing relationships with financial institutions, such as previous loans or accounts, can lead to better interest rate offers due to established trust and history.

By managing these factors, borrowers can improve their chances of obtaining more favourable interest rates.

How to receive better interest rates

To secure better interest rates on loans, consider the following strategies:

  • Improve credit score: Maintain a high credit score by paying bills on time, reducing outstanding debt, and correcting any errors on your credit report.
  • Increase income: Higher and stable income levels can make you a more attractive borrower, potentially leading to lower interest rates.
  • Reduce debt-to-income ratio: Lower your debt relative to your income to improve your financial profile and qualify for better rates.
  • Shorten loan tenure: Opt for shorter loan tenures to decrease the lender’s risk and secure lower interest rates.
  • Build a relationship with lenders: Establishing a strong relationship with financial institutions through previous accounts or loans can lead to more favourable interest rate offers.

Disclaimer

Results generated by the calculator(s) are indicative in nature. The interest rate applied on the loan will depend on the prevailing rates at the time of loan booking.

The calculator(s) are not intended to provide its users/ customers with results that are either certified by Bajaj Finance Limited (“BFL”) or are an obligation, assurance, warranty, undertaking or commitment, financial and professional advice by BFL, under any circumstances. The calculator(s) is only a tool that assists the users/ customers arrive at results of various illustrative scenarios generated from data input by the user/ customer. The use of the calculator is entirely at the risk of the user/ customer, BFL is not responsible for any reason, for any errors in any outcome resulting from the use of the calculator.

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Frequently asked questions

How to use an interest calculator?

Using the Bajaj Finserv Interest Calculator is easy. To use an interest calculator, enter the loan amount you want to avail. Next, enter the rate of interest on your loan charged by the lender followed by the repayment period you wish to opt for and get accurate results instantly.

How do you calculate simple interest on 11% interest rate?

To calculate simple interest at an 11% rate, multiply the principal amount by the interest rate and the time period (in years). The formula is: Simple Interest = Principal × Rate × Time.

What are the factors that affect personal loan interest rates?

There are several factors that influence the personal loan interest rate that an individual gets. These include the borrowers' monthly income, credit score, repayment history, debt-to-income ratio, and lender-borrower relationship. In order to gain a good interest rate on your personal loan, and thereby reduce the cost of borrowing, it is advisable to ensure that all of these parameters are healthy.

How can an interest calculator help you?

An interest calculator is an online tool that makes your interest calculations easy. Manually calculating interest based on the interest rate on a loan of different amounts can be a tedious task. Moreover, the chances of errors while making these calculations manually are higher as well. With an interest calculator, you can check the interest payable for different loans amount within just a few seconds. The output from the interest calculator, helps you to decide the loan terms with ease.

How can I calculate interest rates?

To calculate interest rates, use the formula: Interest = Principal × Rate × Tenure. This equation helps determine the interest rate on investments or loans.

What is the meaning of real interest rate?

The real interest rate is the nominal interest rate adjusted for inflation, reflecting the true cost of borrowing.

How to calculate interest amount per month?

Divide the annual interest rate by 12 and multiply by the loan principal: Monthly Interest = (Annual Rate / 12) * Principal.

How to calculate fixed interest rate?

Use the agreed-upon rate from the loan agreement, applying it consistently to the principal over the loan term.

What is difference between fixed vs. floating interest rate?

A fixed interest rate remains constant throughout the loan tenure, providing stability, while a floating rate varies based on market conditions. Use an interest calculator to compare and choose the best option for your needs.

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