Calculate the future value of your investments with compound interest. See how your money grows over time with different compounding frequencies, additional contributions, and varying interest rates.
| Year | Opening Balance | Interest Earned | Closing Balance |
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Compound interest is calculated using the following formula:
If you invest ₹1,00,000 at 8% annual interest compounded quarterly for 10 years:
A = 1,00,000 (1 + 0.08/4)^(4×10) = ₹2,21,964
Interest is calculated and added to principal every day (365 times per year). Gives the highest returns.
Interest compounds 12 times per year. Common in fixed deposits and recurring deposits.
Interest compounds 4 times per year. Standard for many investment products.
Interest compounds once per year. Simplest form but gives lowest returns.
Albert Einstein called compound interest "the eighth wonder of the world" and "the most powerful force in the universe." Here's why:
Unlike simple interest which grows linearly, compound interest grows exponentially. Your money doesn't just earn interest, but your interest earns interest!
The longer you invest, the more powerful compounding becomes. Starting early, even with smaller amounts, beats starting late with larger amounts.
Divide 72 by your interest rate to find how many years it takes to double your money. At 8%, your money doubles in 9 years (72/8).
Regular contributions combined with compound interest can create significant wealth over time. Even small monthly investments add up substantially.
The earlier you start investing, the more time compound interest has to work its magic. Even small amounts grow significantly over decades.
Always reinvest your interest earnings instead of withdrawing them. This allows you to earn interest on interest.
Even a 1-2% higher interest rate can make a massive difference over long periods due to the exponential nature of compounding.
Make regular contributions to your investment. This combines the power of compounding with dollar-cost averaging.
Compound interest works best over long time periods. Resist the urge to withdraw early and let time work for you.
Higher compounding frequency (daily/monthly) gives better returns than annual compounding for the same interest rate.
Simple interest is calculated only on the principal amount. Compound interest is calculated on the principal plus accumulated interest. Compound interest grows much faster over time.
More frequent compounding (daily vs annually) results in higher returns because interest is calculated and added to principal more often. Daily compounding gives the highest returns for the same interest rate.
The Rule of 72 is a quick way to estimate how long it takes to double your money. Divide 72 by your annual interest rate. For example, at 9% interest, your money doubles in approximately 8 years (72/9 = 8).
Yes, when you have debt like credit cards or loans. The same power that grows your investments also grows your debt. That's why high-interest debt should be paid off quickly.
It depends on the investment type. Savings accounts: 3-7%, Fixed Deposits: 6-8%, Mutual Funds (long-term): 10-15%, Stock Market (long-term average): 12-15%. Higher returns usually come with higher risk.