Compounding stands as one of the most powerful forces in investing. It has been described by many financial experts as the "eighth wonder of the world." It grows your money fast because you earn returns not only on your investment but also on the accrued returns. The sooner you start investing, the greater the effect of compounding will be on your wealth.
What Is Compounding?
At its core, compounding is the process of earning returns on both your original investment and the reinvested returns from previous periods. This cycle of earning returns on returns creates a snowball effect, where your money grows faster over time.
Formula for Compound Interest:
Where:
- = Final amount
- = Principal investment
- = Annual rate of return
- = Time in years
- Investor A (Age 25): Invests $5,000 per year for 10 years (total investment = $50,000) and stops contributing but lets the investment grow at 8% annually until age 65.
- Investor B (Age 35): Invests $5,000 per year for 30 years (total investment = $150,000) at the same 8% annual return.
- Investor A's Balance: ~$678,000
- Investor B's Balance: ~$612,000
- Reinvested Returns: Your earnings earn more earnings.
- Exponential Growth: This growth snowballs with time, eventually resulting in exponential wealth.
- Time Multiplier: Greater the time of your investment period, larger would be the role of compounding.
- Starting Too Late: Even a few years of waiting can drastically dent your probable returns.
- Interrupting Compounding: Withdrawing earnings disrupts the compounding cycle.
- Quick Profits: Choose long-term steady growth over speculative investment.
- Ignoring Inflation: Choose investments that outpace inflation so that your purchasing power is preserved.
The Rule of 72
The Rule of 72 is a simple way to estimate how long it will take for your money to double at a given annual return rate.
- Divide 72 by your annual return rate.
- For example, at an 8% return rate: . Your money will double in approximately 9 years.
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