There is one thing I have not seen in all these comments and that is the effect of inflation. That can eat you alive. <snip>
Absolutely, inflation is a factor that everyone has to consider in their retirement planning.
A few of the people on this thread have written about planning their retirement spending to only use the return on their investments, leaving the principal intact. I was curious was impact that would have for me, since I plan to use everything up (with a cushion).
I may be misinterpreting "not touching the capital" though. Are those guys considering inflation, or not? As an example, let's say inflation will average 2% over the course of an optimistic 35 year retirement plan and theyr'e starting with, say $500K in assets. Are they saying that at the end they want to still have $500K, or that amount inflated at 2% per year, which would be $1MM? If the answer is $500K, then they're actually spending half of their principal.
The planning software that I use calculates a sustainable yearly after-tax spending amount. I was a bit surprised by how much the rate of return on investments impacts the ability to "not spend the principal". If I put in a unrealistically optimistic 10% as the return on investments above inflation I'd have to cut back my yearly spending by less than 1% to have the same inflation adjusted amount available at the end as at the beginning.
I wonder what rate of return on investments people on this thread are using in their planning, or if they are even consciously thinking about that. I use 5% because the inflation adjusted return on the S&P 500 is about 7%, both historically and throughout my working/investing time. I have money sitting in essentially cash that I can spend when (not if) the next market crash happens. The mix of stocks at 7% and liquid investments getting negative 1-2% (after inflation) gives me about 5% for an average inflation adjusted number. If you're using anything above 7%, well....
Chris