What Is Compound Interest? How Your Money Can Grow Over Time

Examples:

At 8% annual return:

72 ÷ 8 = 9 years

Your money could approximately double every 9 years.

At 6% annual return:

72 ÷ 6 = 12 years

Your money could double approximately every 12 years.

Although it is only an estimate, the Rule of 72 helps investors understand the power of time.

How to Take Advantage of Compound Interest

Start Investing Early

The earlier you start, the more time your money has to grow.

Even small investments can become meaningful over several decades.

Invest Consistently

Regular contributions can accelerate compound growth.

For example:

Investing $100 every month for decades may create significant wealth because each contribution gets more time to grow.

Reinvest Your Returns

Instead of taking profits immediately, reinvest them to allow your investment base to grow.

This creates the cycle:

Investment → Returns → Reinvestment → Bigger Returns

Avoid Interrupting Growth

Frequent withdrawals can reduce the power of compounding.

Long-term investors often benefit from allowing investments to continue growing without unnecessary interruptions.

Common Mistakes That Reduce Compound Growth