What is Compound Interest and How is it Calculated?

Housing Finance

When interest on an investment or savings account balance is reinvested, the compound rate accumulates, resulting in bigger rate payments. A wise person once said that in compound interest (CI), “money produces money.” Use CI in your favor if you want to increase your savings.

Understanding compound interest may help you avoid costly errors and get the most out of your money. So let’s learn more about this and how CI is calculated with an interest calculator in India.

What is Compound Interest?

Compound interest (CI) is money earned on a deposit computed using both the original principle and the previously earned rate. In other words, CI is the return earned on interest. 

Using a compound interest calculator, you can find your interest for any period, whether it be your daily, monthly, or yearly rate.

The longer the amount stays invested, the bigger the compounded returns. Take it as a snowball. The earlier you begin to save and the more money you put into your snowball, the greater it will grow.

Think about what would happen if you threw the snowball down a snow-covered slope. The snow you’ve packed will remain, and you’ll collect much more. When the snowball reaches the bottom of the hill, it will have the snow you began with, the snow it collected along the way, and yet more snow on top of that.

In another sense, the return on-return effect may increase your deposit returns. As a result, the higher the rate, the more frequently you save and the greater your amount. This is also known as “the compounding miracle.”

Compound Interest Types

CI can be calculated using the interest calculator in India. It comes in two forms.

  1. Periodic

This method periodically generates and applies the rate. The rate increases the main sum. Periods in this context refer to yearly, monthly, or weekly.

  1. Continuous

Using a natural log-based formula, this method takes into account the fewest possible intervals. This return increases the principal. This is comparable to all-natural growth’s constant rate of expansion.

Compound Interest Calculator in India

A compound interest calculator in India is a version that depicts the growth of assets over time. To calculate CI through a compound interest calculator in India, you need three parts: the principal amount, the rate, and the time period the investment takes place.

The compound interest calculator in India has a formula box where you can enter the compounding rate, principal amount, rate, and period. Interest calculators in India will calculate the future worth of your investments.

Perks of Compound Interest

When making deposits and buying assets, the interest calculator in India is your best friend. You could earn more from the rate payable if you invest in them. The following are the benefits of compound interest: 

  • Reinvestment

The rate will be added back to the original deposit.

  • More Expensive Deposit 

The deposit’s value increases due to CI. Thus, your payment will be more than just a simple interest deposit when it matures.

  • Savings for the Future 

CI deposits support long-term savings because the rate of return is much higher after ten years or more.

  • Greater Profits 

The return earned significantly increases by increasing monthly, quarterly, and half-yearly installments.

Formula To Find Compound Interest 

There are many ways to learn CI. The simplest method is to use an interest calculator in India to do the math for you.

The formula is:

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

  • A = the total amount of money collected after n years, with the return.
  • P = the principal value (the initial deposit).
  • r = the yearly rate.
  • n =the number of times interest is compounded each year.
  • t = is the duration (number of years) for which you make the deposit.

You can also calculate the yearly rate using an interest calculator in India. You can calculate it by dividing the number of times it’s compounded every year by 12. Based on the rising frequency, this offers you the daily, monthly, or yearly average return rate.

The Workings of Compound Interest

Compound interest could help you accumulate wealth over time if you make wise deposits and use a good interest calculator in India when planning the amount of investment to be made. But if you don’t plan ahead, especially with your debt, it can strain your finances.

Let’s break down how to compound your deposits more effectively so you can understand how CI works.

Once your sum earns a return, the CI begins to accrue. The return now increases the initial capital amount. When it earns a return again, it will figure out the new rate by adding the capital and the return already received. The return will be added to the total amount invested as the deposit grows in size. The sum will grow without any extra capital as long as this loop continues. 

The two elements affecting your rising returns are:

  • Time: It’s essential to give your investments time to grow. The more time you give them, the more growth you’ll see.
  • Return Rate: A higher rate will result in a higher balance when raising the sum. 


Based on whether you borrow or save money, CI might work in your favor or against you. For example, the lowest interest rate, compounded as rarely as possible, is what you want if you’re borrowing money. In contrast, when investing money, you want a rate that compounds often and early, in addition to a decent return rate.

For more information on interest calculators in India, visit Piramal Finance and explore the products and services.