You want to have $2 million in real dollars in an account when you retire in 30 years. The nominal return on your investment is 12 percent and the inflation rate is 3.6 percent. |
What real amount must you deposit each year to achieve your goal? (Do not round intermediate calculations and round your answer to 2 decimal places, e.g., 32.16.) |
Assume that the r is real rate of interest
Nominal rate = Real rate * Inflation rate
(1+ 12%) = (1 + r) * (1+ 3.6%)
Or 1.12/ 1.036 = (1 + r)
Or r = 1.08108 -1 = 0.08108 or 8.108%
Now we can use FV of an Annuity formula to calculate the annual deposits by you
FV = PMT *{(1+r) ^n−1} / r
Where,
Future value of annual deposits FV = $2,000,000
PMT = Annual deposits =?
n = N = number of payments = 30 years
r = I/Y = real interest rate per year = 8.108%
Therefore,
$2,000,000 = Annual deposit *{(1+ 8.108%) ^30−1} /8.108%
Annual deposits = $17,307.88
Therefore you have to deposit $17,307.88 per year to achieve your goal.
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