I've assumed for both illustrations a required income of £1000pa and a naive average RPI increase of 3% pa.
First up TJH's income experience from the year 2009 onwards when the worst of the fall happened. The first column is TJH income per unit used for each year.
Code: Select all
income needed inc received deficit
22.16 1000 1000
11.59 1030 523.0144 506.9856
16.71 1060.9 754.0614 306.8386
18.32 1092.727 826.7148 266.0122
20.89 1125.50881 942.6895 182.8193
21.48 1159.27407 969.3141 189.96
22.4 1194.0523 1010.83 183.222
22.77 1229.87387 1027.527 202.3468
1838.184 IR required
This suggests that an IR of 1.8x a year's income should be held in cash, or near cash.
Second example, from the experience of HYP1, starting from the year 2008, and the first column gives the income produced by HYP1.
Code: Select all
income needed inc received deficit
5040 1000 1000
3187 1030 632.3413 397.6587
3297 1060.9 654.1667 406.7333
3843 1092.727 762.5 330.227
4289 1125.509 850.9921 274.5167
5828 1159.274 1156.349 2.924868
5601 1194.052 1111.31 82.74277
6093 1229.874 1208.929 20.94529
6124 1266.77 1215.079 51.69072
1567.439 IR required
This suggests an IR of 1.5x a year's income should be held..
What is interesting - nay depressing - about both sets is how slowly the income builds after the cash. I'm also painfully aware of the difficult of applying these sets to any new scenario which may unfold in the future, but the result seems in line with what people have written previously. This might only be because previous writers have used the same HYPs, however! What does seem true, is that I will continue to be frustrated by holding quite large amounts of cash earning next to nothing as a lifeboat, and that I cannot reduce that amount without extra risk.
Arb.