How does compounding work?
It is an act of earning interest over interest, i.e., you earn interest on the amount and the interest accrued on it in the previous period.
Compound interest differs from simple interest in which one earns interest on the original investment.
Let’s understand this with an example.
You decide to invest Rs 1,00,000 for five years at an interest rate of 10%. The table below illustrates how the simple interest would work.
Year
|
Amount at the beginning of the year
|
Simple Interest Earned
|
Amount at the end of the period
|
|
|
|
|
1 |
1,00,000 |
10,000 |
1,10,000 |
2 |
1,10,000 |
10,000 |
1,20,000 |
3 |
1,20,000 |
10,000 |
1,30,000 |
4 |
1,30,000 |
10,000 |
1,40,000 |
5 |
1,40,000 |
10,000 |
1,50,000 |
Formula for Compound Interest
You can also see how much you will accumulate at the end of the investment period with the help of a compound interest formula.
A= P (1+ r/n) ^(nt)
where A= Amount at the end of the period
P= Principal
R= Rate of interest
N= Number of times interest is compounded every year
T= Number of years for which the money is invested
You can also use a compound interest calculator to calculate how much wealth you will accumulate over the years.
Harnessing the Power of Compounding
It’s wise to start early and stay invested for a long time to make the best out of the principle of compounding. It’s also prudent to step up your investments periodically to make the base larger, enabling greater benefits of compounding. Reinvestment of interest or dividends further augments the investment corpus, setting the stage for substantial gains in the future.
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