Final answer:
a) The amount needed when you retire is $7,475,154.47. b) To achieve this retirement goal, you need to deposit $1,767.10 each month until retirement. c) You will need to deposit a total of $424,104 into your retirement account.
Step-by-step explanation:
To determine how much you will need for retirement, we can use the concept of future value of an annuity. In this case, the annuity is the annual withdrawal of $540,000 for 30 years. With an expected interest rate of 5.5% during retirement, we can calculate the amount needed:
a) The future value of the annuity is $540,000 * [(1+0.055)^30 - 1] / 0.055 = $7,475,154.47 rounded to the nearest cent.
b) To deposit a monthly amount to reach this goal, we can use the formula for the present value of an annuity: $7,475,154.47 = X * [1 - (1+0.07/12)^(-240)] / (0.07/12), where X is the monthly deposit. Solving for X gives us a deposit amount of $7,475,154.47 * (0.07/12) / [(1+0.07/12)^240 - 1] = $1,767.10 rounded to the nearest cent.
c) To find the total amount deposited into the retirement account, we can multiply the monthly deposit by the number of months until retirement: $1,767.10 * 12 * 20 = $424,104 rounded to the nearest cent.
d) The total payments received during retirement can be calculated by multiplying the annual withdrawal by the number of years: $540,000 * 30 = $16,200,000 rounded to the nearest cent.
e) To determine the amount of the money received that was interest, we subtract the total amount deposited from the total payments received: $16,200,000 - $424,104 = $15,775,896 rounded to the nearest cent.