Question

In: Accounting

In trying to apply my knowledge in the real world, I am trying to create a...

In trying to apply my knowledge in the real world, I am trying to create a realistic retirement schedule. However, I am running into difficulties using both a financial calculator as well as our equations from class in doing this.

I am trying to do the following: plan a retirement schedule between the ages of 25 and 70, in which I would deposit 20% of my income each year. The income starts at 80,000 with an annual growth rate of 4% and, to be realistic, assuming an interest rate of 2.5%. I will assume for simplicity that I receive my first salary ($80,000) when I turn 25, and my last salary when I turn 70. As soon as I receive a salary, I will save 20% of it.

I would like to know (1) how much I will have in my retirement account when I turn 70, immediately after the last deposit, and (2) what single deposit made on my 25th birthday would give the same account balance when I turn 70.

However, this raises issues, as if I try to use the equation for the present value of a growing annuity with a 4% growth rate and 2.5% discount rate, r-g will yield a negative number. Also, I could not find online how to do this on my HP 10bII+ financial calculator and I don't want to manually enter 46 payments.

Do you know how I could overcome this obstacle?

All the best,

Jimmy

Unfortunately, I forgot to reply Jimmy’s email and I would like to get back to him as soon as possible. I want to answer Jimmy’s questions using the formulas we learned in class (not the calculator or Excel). You may use the calculator or Excel for calculations, but I want to send Jimmy the formula solution. Can you help me draft a response?

  1. (3 points) Start by drawing the timeline, showing the first three and the last two deposits, ie the deposits at t = 25, 26, 27, 69 and 70 (the amount of each deposit and how you calculated it).
  2. (3 points) Briefly comment on Jimmy’s concern that “if I try to use the equation for the present value of a growing annuity with a 4% growth rate and 2.5% discount rate, r-g will yield a negative number”. (3 sentences at most)
  3. (5 points) How much will Jimmy have in his retirement account when he turns 70, immediately after the last deposit?
  4. (5 points) What single deposit made on Jimmy’s 25th birthday would give the same account balance when he turns 70?

Solutions

Expert Solution

Year of Deposit Annual Salary Deposit (20%) (1+r) Period (n) (1+r)^n Value of each deposit At 70 =Deposit * (1+r)^n
25            80,000           16,000 1.025 45 3.0379                      48,606
26            83,200           16,640 1.025 44 2.9638                      49,318
27            86,528           17,306 1.025 43 2.8915                      50,039
28            89,989           17,998 1.025 42 2.8210                      50,772
29            93,589           18,718 1.025 41 2.7522                      51,515
30            97,332           19,466 1.025 40 2.6851                      52,269
31         1,01,226           20,245 1.025 39 2.6196                      53,034
32         1,05,275           21,055 1.025 38 2.5557                      53,810
33         1,09,486           21,897 1.025 37 2.4933                      54,597
34         1,13,865           22,773 1.025 36 2.4325                      55,396
35         1,18,420           23,684 1.025 35 2.3732                      56,207
36         1,23,156           24,631 1.025 34 2.3153                      57,029
37         1,28,083           25,617 1.025 33 2.2589                      57,864
38         1,33,206           26,641 1.025 32 2.2038                      58,711
39         1,38,534           27,707 1.025 31 2.1500                      59,570
40         1,44,075           28,815 1.025 30 2.0976                      60,442
41         1,49,838           29,968 1.025 29 2.0464                      61,326
42         1,55,832           31,166 1.025 28 1.9965                      62,224
43         1,62,065           32,413 1.025 27 1.9478                      63,134
44         1,68,548           33,710 1.025 26 1.9003                      64,058
45         1,75,290           35,058 1.025 25 1.8539                      64,996
46         1,82,301           36,460 1.025 24 1.8087                      65,947
47         1,89,594           37,919 1.025 23 1.7646                      66,912
48         1,97,177           39,435 1.025 22 1.7216                      67,891
49         2,05,064           41,013 1.025 21 1.6796                      68,884
50         2,13,267           42,653 1.025 20 1.6386                      69,893
51         2,21,798           44,360 1.025 19 1.5987                      70,915
52         2,30,669           46,134 1.025 18 1.5597                      71,953
53         2,39,896           47,979 1.025 17 1.5216                      73,006
54         2,49,492           49,898 1.025 16 1.4845                      74,074
55         2,59,472           51,894 1.025 15 1.4483                      75,159
56         2,69,851           53,970 1.025 14 1.4130                      76,258
57         2,80,645           56,129 1.025 13 1.3785                      77,374
58         2,91,870           58,374 1.025 12 1.3449                      78,507

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