Teach me how compound interest works

Compound Interest Explained

💼Business

Featured Chapters

What is Compound Interest?

00:00:05 - 00:00:08

How Compound Interest Works

00:00:28 - 00:00:32

Key Factors Affecting Compound Interest

00:01:08 - 00:01:12

The Rule of 72

00:01:30 - 00:01:34

Compound Interest vs Simple Interest

00:01:46 - 00:01:50

Real-World Implications

00:02:00 - 00:02:03

Summary

00:02:18 - 00:02:22

Sources

Transcript

Welcome to this video on compound interest! In this video, we'll explore the concept of compound interest, how it works, and its real-world implications.

Compound interest is like a snowball rolling down a hill. It starts small, but as it gathers more snow, it grows bigger and bigger.

Compound interest is a financial concept where the interest earned on an initial principal amount also earns interest over time.

This process creates a snowball effect, where the total amount grows exponentially.

Let's dive into how compound interest works with a simple example.

Imagine you deposit $1,000 into a savings account with an annual interest rate of 8%.

At the end of the first year, you'll earn $80 in interest, bringing your total balance to $1,080.

In the second year, the interest is calculated on the new balance of $1,080, not just the original $1,000.

This means you'll earn $86.40 in interest, bringing your total balance to $1,166.40.

This process continues each year, with the interest being calculated on the new balance, including both the principal and the accumulated interest.

Now, let's explore the key factors that influence the power of compound interest.

The higher the interest rate, the faster your money will grow.

The more frequently interest is compounded, the faster your money will grow.

The longer the period over which interest is compounded, the more significant the effect.

Regular contributions to your principal can significantly amplify the effect of compound interest.

A handy rule of thumb for estimating how long it takes for your money to double is the Rule of 72.

Divide 72 by the annual interest rate to find the number of years it takes to double your money.

For example, at an 8% interest rate, it would take approximately 9 years for your money to double.

Let's compare compound interest to simple interest.

Simple interest is calculated only on the original principal amount.

Compound interest, on the other hand, is calculated on both the principal and the accumulated interest.

Compound interest has significant real-world implications.

For savings, compound interest can help your money grow significantly over time, making it a powerful tool for long-term financial planning.

For borrowers, compound interest can increase the amount owed on loans or credit cards if not managed properly.

In conclusion, compound interest is a powerful financial concept that allows your savings or investments to grow exponentially over time.

Understanding the factors that influence compound interest, such as the interest rate, compounding frequency, and time, can help you make informed financial decisions.