The table below shows you how a single investment of $100 will grow at various rates of return. Five percent is what you might get from a certificate of deposit (CD) or with a government bond, 10% is a little less than the historical average stock market return, and 15% is what you might get if you decide to learn how to pick your own stocks and take advantage of some of our lessons in advanced investing techniques.

Growing At

Why is the difference between a few percentage points of return so massive after long periods of time? You are witnessing the miracle of compounding. When your investment gains (returns) begin to earn money, too, and those returns start to earn... small amounts of money can mushroom very quickly. Extend the time period or raise the rate of return, and your results increase exponentially. For instance, if you start young, say at 15 years of age, note how quickly a single $100 investment grows, especially in the later years.

Growing At

Looking at it another way, let's compare two teenagers and their lifetime savings habits. Bianca baby-sits a lot and spends most of her spare time reading. She saves $1000 a year starting when she's 15 and invests it in the stock market for 10 years earning 12% per year on average. After 10 years, she comes out of her shell, stops adding money to her nest egg, and spends every penny she earns club hopping and on trips to Cancun. But she keeps her nest egg in the market.

Compare her account to that of her friend Patrice, who squandered her early paychecks on youthful indiscretions. At age 40 Patrice gets a wake-up call when her parents retire on nothing but Social Security. She starts vigorously socking away $10,000 every year for the next 25 years. Guess who has more at age 65? That's right, Bianca. (You figured it was a setup, didn't you?) Her 10 years of saving $1000 per year (just $10,000 total -- the same amount Patrice put away in just one year) netted her $1.6 million by age 65. Patrice, on the other hand, scrimped for 25 years to invest a quarter million dollars out of her own pocket and ended up with just under a million. Neither will be going to the poorhouse, but you see our point: Bianca's baby-sitting money grew for 50 years, twice as long as Patrice's, and Bianca barely missed it.

(It's almost not fair to mention this, but Bianca's money was in a Roth IRA. Patrice could only put 20% of her money in the Roth ($2000 per year). So Bianca's $1.6 million is tax-free, but Patrice will be paying capital gains taxes on most of her money.)

We will revisit the subject of compounding in Step 2, but for now suffice it to say that the power of compounding is the single most important reason for you to start investing right now. Every day you are invested is a day that your money is working for you, helping to ensure a financially secure and stable future.