Which concept describes money that can grow due to compounding interest over time?

• A. Time Value of Money
• B. Compound Interest
• C. Simple Interest
• D. Interest

Answer: (B)

Compound interest is the mechanism by which money grows when the interest earned is added to the principal, so each new period earns interest on both the original amount and the accumulated interest. This creates growth that accelerates over time. For example, $1,000 at 5% compounded yearly becomes $1,050 after one year and $1,102.50 after two years, with the growth continuing as more interest is earned on the increased balance. More frequent compounding (quarterly, monthly) leads to even more growth because more interest is added and then itself earns interest.

This differs from simple interest, where interest is paid only on the original principal and does not compound. The time value of money explains why money available now is worth more than the same amount later due to potential earning power, but the explicit mechanism that causes growth over time in an account is compound interest.