Final answer:
The effective annual rate (EAR) of 18.99 percent compounded daily is approximately 20.73%, calculated using the formula (1 + (nominal rate / number of compounding periods))^number of compounding periods - 1.
Step-by-step explanation:
To calculate the effective annual rate (EAR) of 18.99 percent compounded daily, use the formula for EAR considering daily compounding. The general formula for EAR is (1 + (nominal rate / number of compounding periods))^number of compounding periods - 1. In this case, the nominal rate is 18.99% or 0.1899, and the number of compounding periods is 365, as there are 365 days in a year.
Using the formula, the EAR is calculated as:
EAR = (1 + (0.1899 / 365))365 - 1
EAR = (1 + 0.00052)365 - 1
EAR ≈ 1.2073 - 1
EAR ≈ 0.2073 or 20.73%
So, the effective annual rate for 18.99 percent interest compounded daily is approximately 20.73 percent.