Financial education
Compound Interest Guides
Practical examples that show how time, monthly deposits, returns, and inflation affect long-term growth. Each guide includes a preloaded calculator scenario so you can adjust the numbers yourself.
Compound Interest With Monthly Contributions
Learn how monthly deposits change compound growth, why contribution timing matters, and how to model recurring investing with realistic assumptions.
How Much Should You Invest Monthly to Reach $100,000?
Use time, starting balance, and expected return to estimate the monthly investment needed to reach a $100,000 milestone.
Simple Interest vs Compound Interest: Clear Examples
Compare simple and compound interest side by side with realistic numbers so you can see when the difference becomes meaningful.
Rule of 72 Examples for Fast Investment Estimates
Use the Rule of 72 to estimate doubling time, compare returns, and understand how fees slow long-term wealth growth.
Compound Interest vs Inflation: Nominal and Real Growth
Understand why a growing account balance can still lose purchasing power, and how to think about real returns.
Savings Account vs Investment Growth Over Time
Compare lower-risk savings yields with higher-volatility investment returns and see how the difference compounds over long horizons.
Retirement Compound Interest Examples by Starting Age
See how starting age affects retirement outcomes and why early contributions can be more powerful than larger late contributions.
How to Use This Compound Interest Calculator
A step-by-step guide to each input, the chart, the annual table, sharing URLs, and common mistakes to avoid.