When is simple interest used instead of compound interest?

Simple interest is commonly used for short-term loans, auto loans, and certain personal loans. It's calculated only on the principal amount, making it easier to understand. Most savings accounts and long-term investments use compound interest instead.

How much less do I earn with simple interest versus compound interest?

The difference grows over time. For short periods (under a year), the difference is minimal. Over decades, compound interest can yield several times more than simple interest. For a $10,000 investment at 5% over 20 years: simple interest earns $10,000, compound interest earns approximately $16,533.

Is simple interest better for borrowers?

Yes, borrowers prefer simple interest because you pay less total interest than with compound interest. With simple interest, you only pay interest on the original principal, not on accumulated interest. This makes loans more affordable.

How do I calculate simple interest manually?

The formula is: Interest = Principal × Rate × Time. For example, $1,000 at 5% annual interest for 3 years equals $1,000 × 0.05 × 3 = $150 in interest. Your final amount would be $1,150.