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Required return calculation question
Hi Guys, I had two questions below on how to correctly calculate required return - I’ve made up the below examples to illustrate my questions:
1. Assume the case below:
- John Smith
- Recently Retired
- Has a portfolio of $5,000,000
- Smith estimates she will need $50,000 the first year of retirement, and likes to keep 6 months of living expenses on hand.
- He also will support his son by providing him with $20,000 next year.
- Both figures are expected to increase each year at the inflation rate, which is 2%
What is Smith’s required return over the coming year?
The way I would solve it:
($50,000 + $25,000 + $20,000)/$5,000,000 = 1.9%
1.9% + 2% inflation = 3.9%
The way it should be solved based on the text:
($50,000 + $20,000)/$5,000,000 = 1.4%
1.4% + 2% inflation = 3.4%
So basically, the difference is that the emergency fund, which would be ($50,000/2) since he keeps six-months on hand, is omitted in the second one. Shouldn’t this be part of the return calculation? Or, alternatively, shouldn’t it be subtracted from the $5,000,000 before any calculations are done as it is not an investable amount?
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2. Assuming the below case:
- Jerry Jones
- Retired, time horizon of 25 years.
- Portfolio of $3,000,000
- Will need to take out $70,000 each year for the rest of his life, indexed to inflation, starting next year.
- Plans to leave a bequest of $3,500,000 (in today’s dollars) at death to charity.
- 2% inflation
What is Jerry’s return objective?
The way it would be solved based on the text:
N = 25; PMT = 70,000; FV = 3,500,000; PV = –3,000,000; IRR = 2.80%
2.80% + 2% inflation = 4.80%
My problem with this is:
a) It doesn’t seem right to me to add 2% inflation in to the required return at the end, given how each withdrawal of $70k is being increased by the inflation amount each year - so the second year withdrawal would be ($70,000 x 1.02 = $71,400), and so on. How can the above be right seeing how it does not take this gradual increase in withdrawal into account?
b) The first $70,000 withdrawal isn’t happening until one year from now - doesn’t the calculation above ignore this fact - in other words, would this calculation be different if the first $70k was coming out next week, as opposed to next year? I have some doubts about whether this answer is right, but if it’s wrong I’m not quite sure how to solve it correctly!
If anyone can shed some light on these two, I’d really appreciate it - thank you!! |
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