Course glossary

The concepts, in context.

Cash flow: timing matters
A positive monthly budget can still contain a week when cash runs short.
Emergency reserves and liquidity
A reserve is money set aside for an unexpected expense; access is part of its purpose.
Goals and time horizon
A goal needs an amount, a date, and a way to handle uncertainty.
Simple interest
Simple interest applies the rate to the original principal, without interest on prior interest.
Compound interest
Compound interest adds earlier interest to the base that earns the next period’s interest.
Inflation and purchasing power
A larger number of dollars does not always buy more goods and services.
Diversification and concentration
Different labels do not necessarily mean different underlying risks.
Fees and long-term growth
A recurring fee reduces both today’s balance and the amount left to grow.
Account security and monitoring
Prevention and prompt detection work together.
Phishing and impersonation
Verify the sender through a channel you already trust.