The Boring Part of Finance That Will Build Your Wealth
Benjamin Franklin once said, “Money makes money. And the money that money makes, makes money.” That’s compound interest in a nutshell.
Now, before your eyes glaze over, hear me out. This is one financial concept you don’t want to ignore. Understanding compound interest can help you create true wealth, no matter who you are and how much money you earn now. It allows you to take a small investment, and over the years, turn it into millions. On the other hand, if you’re in debt, compound interest can make it harder to pay off your balance and find financial freedom.
It’s a fact: Compound interest is incredibly powerful. It’s interest that is calculated based on the principal (the original amount of the investment or loan) and the interest accrued during the previous periods. In other words, compound interest is “interest on interest.” This is in stark contrast to simple interest, which is calculated based on the original investment or loan amount.
An example: simple interest versus compound interest
Simple interest:
Let’s say you invest $5,000 at 5% interest for 5 years. You can multiply the investment amount by the rate and time to get $250 in earned interest.
$1,000 x 0.05 x 5 = $1,250 in accrued interest
This means your investment will be $6,250 ($5,000 + $1,250) after 5 years.
Compound interest:
If you invest that same amount ($5,000) but use quarterly compounding interest, you’ll earn even more. Using an online compound interest calculator, you can see that your $5,000 will turn into 6,410.19 after 5 years of a 5% interest rate. That’s $160.19 more—just by using a compound interest rate instead of a simple interest rate.
Earning money over time is enough to get anyone excited, but there’s a lot more about compound interest that should perk your interest too. Here are 5 reasons we get enthused about compound interest and how it can impact your finances.
Reason #1: Anyone can benefit from it
It doesn’t matter who you are, where you’re from, how old you are, or even how much you’ve saved. Compound interest can work for anyone. Even if you start small, over time your savings will grow.
Reason#2: Compound interest can add up
It often surprises our clients how compound interest accumulates in big ways. To explain, let’s look at an example.
Let’s say a 25-year-old person invests $10,000 in the stock market and earns an annual compound interest rate of 5%. According to the online compound interest calculator, the total value of this investment after 40 years is $73,584. More specifically, here are the earnings over time:
- 20-years – $27,126
- 25-years – $34,812
- 30-years – $44.677
- 35-years – $57,337
- 40-years – $73,584
This data speaks for itself. The total value more than doubles over the last fifteen years, and almost triples over the second 20 years.
The best example of compound interest at work is Warren Buffet, who currently has a net worth of $81 billion. He credits his wealth to the power of compound interest. Most of his fortune was acquired after he turned 50, and he hit $70 billion in his mid-60s. Incredible, huh?
Reason #3: It isn’t about earning the highest returns
With compound interest, you don’t always have to hit a home run with all of your investments. According to Morgan Housel, partner at The Collaborative Fund, behavioral finance expert, and former columnist at The Wall Street Journal, “good investing isn’t necessarily about earning the highest returns, because the highest returns tend to be one-off hits that can’t be repeated. It’s about earning pretty good returns that you can stick with and which can be repeated for the longest period of time. That’s when compounding runs wild.”
Reason #4: It can teach patience
It can take a long time for compound interest to pay off—many years actually. If you’re a person seeking fast cash, compound interest investing isn’t for you. It’s more of a slow and steady approach with the power to pay off big in the long haul.
Reason #5: It’s easy to understand and use
As I said, you don’t need an MBA or a finance degree to understand compound interest. It’s a relatively simple concept that anyone can use. That’s probably why credit card companies and lenders also rely on compound interest when using their funds.
This is the main downside to compound interest involves accruing debt that you owe. If you owe on your credit card and pay off the monthly minimum, your accumulated debt and a high interest rate can add up quickly over time. Compound interest and rates as high as 20% can really destroy your chances of building wealth.
Here’s the moral of the story: Start saving early to maximize the results of compound investing. Be patient because the big gains come later on. Just remember Warren Buffet, for example. He’s arguably the best example of how the power of compound interest can work in wealth.
If you’d like tips or need help creating an investment plan, talk to a member of our team today. We’re here to help you increase your wealth and can answer your questions about compound investing.
Lake Road Advisors, a Fee-Only, independent financial planning firm with offices in Corning, NY, Ithaca, NY and Portland, OR works with clients virtually all across the country. Paul Sydlansky, the founder of Lake Road Advisors LLC, has worked in the financial services industry for 20+ years. Prior to founding Lake Road Advisors, Paul worked at Morgan Stanley in Manhattan for 13 years. While at Morgan Stanley, Paul was a senior-level manager within the Institutional Equities Department. In 2018 he was named to Investopedia’s Top 100 Financial Advisors list. Paul received a Bachelor’s degree in Economics from Marist College and holds an MBA from New York University Leonard N. Stern School of Business. Paul is a CERTIFIED FINANCIAL PLANNER™ and a member of the National Association of Personal Financial Advisors (NAPFA) and the XY Planning Network (XYPN).

