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"Compound interest is the eight wonder of the world." - Albert Einstein

The above quote leads off chapter two of Michael Moe's book, "Finding the Next Starbucks: How to Identify and Invest in the Hot Stocks of Tomorrow." Although we learn about compound interest and the Rule of 72 in our high school math class, sometimes it takes some financial related calculations later in life to really drive the point home, enough so that it will have an effect on our saving and investment habits during adulthood.

Moe uses two compound interest examples that are worth repeating here. Although both cases are impossible to be recreated in the real world today, the dramatic numbers should at least intrigue people enough to run the numbers on their own individual financial plans. The results will still most likely be surprising for many of you.

Example 1

Purchase price for Manhattan Island in 1626 by Dutchman Peter Minuit: $24

Value today if invested at 5.0% annual rate of return: $2.7 billion

Value today if invested at 7.5% annual rate of return: $20.7 trillion

Value today if invested at 10.0% annual rate of return: $128.7 quadrillion

Example 2

You have landed a consulting job for the month of January. Your temporary employer has given you the option of earning $10,000 per week or earning $0.01 on the first day and having your daily pay double each day thereafter for the remainder of the month. Which payment plan should you choose?

Earn $10,000 per week for the month = $40,000

Earn $0.01 on first day, double every day = $21.5 million


While these examples are meant to be fantasy, not reality, compound interest is still a very important concept to consider when you are contemplating your saving and investing plans.

This post is the third in a multi-part series discussing the book Finding the Next Starbucks . You may read Parts 1 and 2 in the series below. Go ahead and subscribe to this blog if you want to be notified via email or rss feed when new posts are published.

Finding the Next Starbucks - Part 1

Finding the Next Starbucks - Part 2

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