In: Finance
You want to be able to withdraw $35,000 from your account each year for 15 years after you retire. If you expect to retire in 30 years and your account earns 7.8% interest while saving for retirement and 6% interest while retired: Round your answers to the nearest cent as needed. a) How much will you need to have when you retire? $ b) How much will you need to deposit each month until retirement to achieve your retirement goals? $ c) How much did you deposit into you retirement account? $ d) How much did you receive in payments during retirement? $ e) How much of the money you received was interest? $
a]
PV of annuity = P * [1 - (1 + r)-n] / r,
where P = periodic payment. This is $35,000
r = interest rate per period. This is 6%
n = number of periods. This is 15.
PV of annuity = $35,000 * [1 - (1 + 6%)-15] / 6%
PV of annuity = $339,928.71
b]
Future value of annuity = P * [(1 + r)n - 1] / r,
where P = periodic payment. We need to calculate this.
r = periodic rate of interest. This is 7.8%
n = number of periods. This is 30
$339,928.71 = P * [(1 + 7.8%)30 - 1] / 7.8%
P = $339,928.71 * 7.8% / [(1 + 7.8%)30 - 1]
P = $3,112.62
c]
Amount deposited into retirement account = monthly deposit * total number of deposits
Amount deposited into retirement account = $3,112.62 * 30
Amount deposited into retirement account = $93,378.51
d]
Amount received in payments = monthly payment * total number of payments
Amount received in payments = $35,000 * 15 = $525,000
e]
Interest = Amount received in payments - Amount deposited into retirement account
Interest = $525,000 - $93,378.51
Interest = $431,621.49