Final answer:
Compound interest is an interest rate calculation on the principal plus the accumulated interest. It is calculated using the formula: Compound interest = Future Value - Present Value.
Step-by-step explanation:
Compound interest is an interest rate calculation on the principal plus the accumulated interest.
To find the compound interest, we determine the difference between the future value and the present value of the principal. This is accomplished as follows:
Future Value = Principal x (1 + interest rate)time
Compound interest = Future Value - Present Value
Compound interest can make a huge difference with larger sums of money and over longer periods of time.