Suppose you have $800,000 in your savings account when you retire. Your plan is to withdraw $6,000 a month as retirement income from this account. You expect to earn annual interest of 6 percent, compounded monthly, on your money during your retirement. How many months can you be retired until you run out of money?
Current Value of savings(Present Value) = $800,000
Monthly withdrawal from account = $6000
Calculating the No of months you can withdraw from saving account using Present value of oridinary annuity formula:-
Where, C= Periodic Payments = $6000
r = Periodic Interest rate = 6%/12 = 0.5%
n= no of periods
taking Log on log sides,
-0.47712125 = -n*0.00216606
n = 220.27
So, you can retire till 220 months(rounded to whole number)
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