Simple Interest Calculator: Formula, Daily, Monthly & Yearly Calculation Online
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Simple Interest Rate Calculator

Total Amount gained:


at 8% interest rate for 14 years



Interest gained:


What is Simple Interest, A = P (1+rt)?

A simple Interest rate is a rate at which you lend or borrow funds. It calculates the interest earned or paid on a principal amount over a specific period. Whenever someone borrows money (called the principal amount) from the bank, they pay back the amount at a predefined tenure along with an extra amount of money called interest.

The simple interest formula is A = P(1 + rt)

A represents the total amount 
P is the principal amount 
r denotes the simple interest rate 
t stands for the time in years.

If you want to simplify the process, use a simple interest calculator. It is also commonly known as the interest rate calculator.

What Is A Simple Interest Calculator?

A simple interest calculator is an online tool designed to calculate simple interest. It is also referred to as an interest calculator or interest rate calculator. Kotak Mahindra Bank offers a user-friendly online simple interest calculator that can help you in your financial planning. With us, calculating simple interest is made easy with just a few clicks.

All you need to do is input data into the fields provided, and the tool will apply the simple interest formula: A = P(1 + rt). Our interface allows you to instantly find out simple interest on the principal amount on a daily, monthly, or yearly basis. This tool is incredibly easy to use. It helps determine how your money can grow or how much interest you may owe to the bank.

How Does a Simple Interest Calculator Work?

Using a simple interest calculator is easy with Kotak Mahindra Bank. This useful online tool applies a simple interest formula when you input three key details:

  • Principal Amount (P): The principal amount is the initial sum invested, borrowed, or saved. It is the key element on which the interest will be calculated.
  • Rate of Interest (r): The annual interest rate that will be applied to the principal amount.
  • Period of Investment (t): The duration specified in days, months, or years for your investment.

Once you've entered these adetails, the interest rate calculator applies the simple interest formula: A = P(1 + rt) to provide you with the following insights:

  • Total Interest Earned: This figure represents the total interest accumulated during the specified tenure.
  • Total Amount: The final value, including both the principal amount and the accrued interest.

What is Simple Interest Formula And Calculations?

You can calculate simple interest with the formula SI = (P x R x T) / 100, where:

  • SI stands for Simple Interest
  • P represents the Principal amount
  • R is the Rate of Interest
  • T signifies the Tenure

Once you've determined the Simple Interest (SI), you can easily find the Total Amount (A) by adding it to the Principal:

A = P + SI


Additionally, a simple interest formula calculator can also use an easier method to directly determine the total amount. The simple interest formula is A = P(1 + rt), where:

  • A represents the total amount, including both Principal and Interest
  • P denotes the Principal amount
  • r represents the annual interest rate in decimal form (r = R/100)
  • t indicates the period, in either months or years

This second formula allows for a direct calculation of the total amount.

To show you the application of this formula, consider an example:

You have a Principal amount of Rs 10,000 and an interest rate of 10% with a tenure of 6 years. You can calculate the Total Amount as follows:

A = 10,000 x (1 + 0.1 x 6) = Rs 16,000.

The interest is Rs 6,000 (A - P), providing a clear understanding of the simple interest calculation process.

Benefits of a Simple Interest Calculator

A simple interest calculator is a useful tool for managing your finances. It is a beneficial tool with several benefits:
  • Convenience: Kotak Mahindra's simple interest calculator is designed to be user-friendly. We ensure that even individuals with minimal financial knowledge can use them effectively.
  • Quick and easy: With a simple interest calculator, you can quickly calculate the interest and the total amount. It provides you with instant insights into your financial transactions.
  • Accurate: Since our calculators are automated, you can completely rely on their accuracy.
  • Easy to Compare Schemes: The calculator allows you to make side-by-side comparisons. This will help you choose the most suitable option for your financial goals.
  • Assists in Financial Planning: it helps determine the total amount in advance. This will enable you to decide wisely about your investments, savings, or loans.

Including a simple interest calculator in your financial routine is a smart choice.