Finance

How compound interest works

Welcome to this module about How compound interest works.

Learning Objective

By the end of this module, learners will be able to explain the mechanics of compound interest, calculate its growth over time, and apply the concept to real-world financial scenarios.

5‑8

Minutes

5

Key Concepts

3

Quiz Questions

Unlock the Power of Compound Interest

Compound interest is the process where interest is earned not only on the original amount of money (the principal) but also on any previously accumulated interest. Unlike simple interest, which calculates earnings only on the principal, compound interest allows your money to grow faster over time because each interest payment is added to the balance, and future interest is calculated on this larger amount. For example, if you invest $1,000 at a 5% annual compound interest rate, you’ll earn $50 in the first year. In the second year, interest is calculated on $1,050, resulting in $52.50, and so on. This snowball effect makes compound interest a powerful tool for long-term savings and investments.

Simple vs. Compound Interest

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The Compound Interest Formula

Key Variables in Compound Interest

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The Power of Time and Frequency

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Module Complete

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Revisit this material in 2‑3 days for optimal retention (spacing effect).