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โ Frequently Asked Questions
What is compound interest?
Compound interest is interest calculated on both the initial principal and the accumulated interest from previous periods. It's often called "interest on interest" and causes wealth to grow exponentially over time.
How does compounding frequency affect returns?
The more frequently interest compounds, the higher your returns. Daily compounding yields slightly more than monthly, which yields more than annual compounding, due to interest being calculated and added more often.
What's the Rule of 72?
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 8% interest, your money doubles in approximately 9 years (72รท8=9).
How do regular deposits impact growth?
Regular deposits significantly boost compound growth by continuously adding to your principal. This strategy, called dollar-cost averaging, can dramatically increase your final balance over time.
What's the difference between nominal and effective interest rates?
The nominal rate is the stated annual rate, while the effective rate accounts for compounding frequency. For example, 6% compounded monthly has an effective rate of 6.17% annually.
How does inflation affect compound interest?
Inflation reduces the purchasing power of your returns. To calculate real returns, subtract the inflation rate from your nominal return rate. Always consider inflation when planning long-term investments.
What's the best compounding frequency?
Generally, more frequent compounding is better for the investor. However, the difference between daily and monthly compounding is often minimal. Focus more on the interest rate and time horizon.
How can I maximize compound interest benefits?
Start early, invest regularly, reinvest all earnings, choose investments with favorable compounding terms, and be patient. Time is your greatest ally with compound interest.