Monthly Archives: April 2017

The Power of Compounding

power of compoundingOne of the most valuable financial concepts…lessons parents can teach their children is the power of compounding.

Albert Einstein is quoted as saying, “The most powerful force in the universe is compound interest.”

So, what exactly is the power of compounding? The power of compounding refers to the fact that money that stays invested grows exponentially over time, as the returns on that money stay invested. Put simply, through the power of compounding, a small amount of money over time can grow into a substantial sum. But, it requires two things: the continual reinvestment of earnings and time.

The power of compounding is truly an investor’s best friend. Over time, as you reinvest your returns, you are continually earning a return on your return – and the longer the time frame, the greater the value. This is why it’s so important to start saving early. The earlier you start saving for retirement, the longer you have the power of compounding working for you.

To demonstrate this, let’s look at an example:

Consider two investors, Sally and Sue, who are the same age. Sally was 25 when she invested $15,000 at an interest rate of 5.5%. For simplification, let’s assume that the interest rate was compounded annually. At 50 years old, Sally will have $57,200.89 saved.

Now, let’s say that Sue invested the same amount of money at the same annually compounded interest rate. However, Sue was 35 years old when she started investing. At 50 years old, Sue will have $33,487.15 saved.

What happened? The power of compounding! By allowing Sally’s investment 10 more years to grow, she earned $23,713.74 more on her money than Sue.

Both investments start to grow slowly and then accelerate over time. However, Sally’s acceleration begins to quickly outpace Sue’s as she nears 50. Sally’s greater acceleration is not just due to the fact that she’s accumulated more interest but also because her accumulated interest is itself accruing more interest.

This amplification increases with time. In 10 more years, Sally will have nearly $100,000 saved, while Sue will only have around $60,000.

One other important fact to know about the power of compounding is that a small increase in the rate of return can produce a huge impact over time.

Example: Let’s say that Sally’s grandparents gave her a gift of $10,000 when she was born and her parents invested it in an account that returned 10% annually. By the time Sally reaches 65 years old, she would have $4.5 million. Now let’s say that the same gift/investment only returned 8% annually. Sally’s portfolio would then only grow to $1.4 million. What if the investment only returned 5%? Sally would only have a mere $227,000 at age 65.  In a nutshell, half the rate of return produces an account that’s less than one-twentieth the size.

At the end of the day…this lesson in numbers, all you need to know is that you must start early. However, if you’ve lost a lot of investing time because you’ve procrastinated, didn’t have the willpower to save, weren’t able to save or just didn’t know what you didn’t know, stop fretting and start saving today. With this said, keep one of my favorite quotes about taking action in mind: The best time to plant a tree is twenty years ago. The second best time is now.