A Sensitivity Analysis
In my endless quest to determine where I'm "at" I've taken to attempting to manipulate some quantitative data in order to come up with qualitative assessments. It's common to talk about NxE where E is anticipated annual expenses extracted from a stash and Nx is some multiple with 25x for example corresponding to the well-known "Four Percent Rule".
My situation does not neatly fit into that technique because my level of reliance on the old nest egg varies over time in response to varying levels in "outside" income I anticipate. To reflect that I decided to look over two time spans: from retirement to age 70, and from retirement to age 80, and see what Nx looked like under some different conditions.To do that I used my best guess at my initial pool of invested assets after adding what I expect to net after downsizing from my home in the Southeast to a small winter home in Illinois. I also took an average of anticipated withdrawals over the time periods in question. The general trend is that my withdrawals are heavier earlier and fall off to essentially nil after age 70. So if I were to compute multiples out past 80 they would only get larger.
What I call my baseling is a set of fairly conservative assumptions: 3.5% real investment return, 3% inflation, a spending level that's ~$1000/mo above my recent actuals, and some conservative assumptions about a non-cola SPIA I'll start at 55. The results were:
Edit: Sorry it's hard to read: couldn't get the format to work out like I wanted
Scen/ when_ret /Nx_to_70 /Nx_to_80
baseline/ ret_now/ 28.7x/ 43.9x
baseline/ ret_55/ 61.2x/ 99.4x
When I change the spending assumption to match current spending
cur_spnd/ ret_now/ 32.1x /49.0x
cur_spnd /ret_55/ 75.9x/ 123.3x
When I do a middle-of-the-road assumption (2% inflation, spending level between current actuals and baseling assumption, and less conservative SPIA assumptions)
mid_road/ ret_now/ 38.9x/ 59.4x
mid_road/ ret_55/ 131.9x/ 214.3x
Then if I dial down spending to what I estimate the threshold between austere and painful to be while resetting everything else back to the baseline
austere/ ret_now/ 70.7x/ 107.8x
austere/ ret_55/ 865.7x/ 1,406.7x
Some of those numbers get pretty gaudy. From one perspective I'm arguably wasting the next 33 months sticking around for the golden carrot my employer holds out. From another, the difference in my estimated terminal wealth is, to someone of my roots/upbringing, almost staggering if I stick it out until 55 and keep a lid on my spending afterwards. In my head I turn that around and say, "If I go now, it's going to cost my kids and grandkids a ton of money." And I feel guilty about that. Cross-generational wealth is easy to see as a demon when you don't receive any, but it is wonderful to contemplate initiating.
A new viewpoint from which to contemplate things, and I'm really no closer to having answers.