The Magic of Compound Interest Explained
Albert Einstein reportedly called compound interest the "eighth wonder of the world." But what exactly does that mean? In simple terms, compound interest is the process of earning interest on your original investment (the principal) and on the interest that has already been added to your account over time.
Simple Interest vs. Compound Interest
If you invest ₹1,00,000 at a 10% Simple Interest rate for 10 years, you earn exactly ₹10,000 every year. At the end of 10 years, your total interest is ₹1,00,000.
However, if you invest that same amount at a 10% Compound Interest rate (compounded annually), you earn ₹10,000 in the first year. But in the second year, you earn 10% on ₹1,10,000 (which is ₹11,000). By the tenth year, this snowball effect results in a total interest of ₹1,59,374. That is almost ₹60,000 more just because your interest was put back to work!
Why Compounding Frequency Matters
When you use our calculator, you will notice a dropdown for "Compounding Frequency." This determines how often the interest is calculated and added to your balance.
- Annually: Interest is calculated once at the end of the year.
- Quarterly: Interest is calculated every 3 months (common in Bank FDs).
- Monthly: Interest is calculated every single month, resulting in the highest overall yield.
The more frequently your money compounds, the faster it grows. Changing the setting from Annually to Monthly in our calculator will instantly show you the boost in your final maturity value.