*Workout Topic: Compound Interest. What is it? How does it work?

FPG takes you on the journey of compound interest and educates you on the basic concept of how it works with a few examples. Not advice. Just FREE GAME.

How is compound interest calculated?

A = P (1 + [r / n])nt

• A = the amount of money accumulated after n years, including interest

• P = the principal amount (your initial deposit)

• r = the annual interest rate (as a decimal)

• n = the compounding frequency (daily, monthly or annually)

• t = the number of years (time) the amount is deposited for

Broooooooooo!!! Just use the calculator LOL, the formula above is for all my undercover nerds who want to pencil this out. This is the formula and how it’s drawn up.

What are the benefits of compound interest?
With compound interest, your money works harder for you by earning returns not just on the initial amount, but also on the interest you've already earned. Over time, this cumulative effect can lead to significant growth, especially compared to simple interest.

Let’s walk through an example: Suppose you invest $24,500 (2026 - Maximum Personal Contribution) into your business retirement 401(k) account with an average 8% interest, compounding monthly for 15 years. In this example, P = ($10,000), r = (.08), n = (12) and t = (15). Now, plug those numbers into the compound interest formula.

How can investors best take advantage of compound interest?

While stocks don’t offer compound interest per the official definition, they do provide the power of compounding. The compounding effect in stocks can occur when you reinvest dividends to buy more shares of a stock, which can earn you additional dividends. It also can occur when your investment grows through price appreciation over time, providing a larger base for future percentage gains.Compound interest works best when it has the time to compound. As seen in the examples above, when you leave your money in a compound interest account for decades, it grows exponentially larger than if you were to leave it for just a few years. As such, investors working with compound interest should have a long-term mindset.

Compound interest works best when it has the time to compound. When you leave your money in a compound interest account for decades, it grows exponentially larger than if you were to leave it for just a few years. As such, investors working with compound interest should have a long-term mindset.