Formula for compound interest

The formula for compound interest is:

$$A = P\left(1 + \frac{r}{n}\right)^{nt}$$

Where:

• $A$ is the future value of the investment/loan, including interest.
• $P$ is the principal investment amount (the initial deposit or loan amount).
• $r$ is the annual interest rate (as a decimal).
• $n$ is the number of times that interest is compounded per year.
• $t$ is the number of years the money is invested or borrowed for.