rodmail, I have tried to describe this several times, but maybe I need to give a more explicit example.
Planning using a feasibility tool in 2006 does not dictate your spending for the next 30 years. If things go well, you adjust. If things go bad, you don't
have to adjust if you don't want to.
From a different thread:
We usually talk about this in the situation when the portfolio goes way down -- and the whole purpose of the safe rate discussions is to give us some comfort that if we stop our paychecks early, we can reasonably count on at least 4% of the balance at that point for the next ~30 years.
But look at the positive side. Let's say that in 5 years, the portfolio is at 1.2 million, after starting at 1 million.
What has happened?
One thing that has happened is that we have "lucked out", as the scenario that is worst for the survival of a portfolio is a large and lengthy market decline starting immediately after we decide to begin the withdrawals. Except for that scenario, the rate would be a good bit higher.
Another thing that has happened is passage of time. So now, instead of needing a $1 million portfolio to last for 30 years, we need it to last for only 25 years.
We can take advantage of our good fortune (timing retirement when we don't have an immediate bear market afterwards) and our new circumstances (more money and a shorter time to spend it) in a couple of different ways.
One -- we can start over. Just designate this new moment as the start of the withdrawal program, and take 4% of 1.2 million, or $48,000 instead of $40,000, for the next 30 years (or you could take ~4.2%, since you are now looking at 25 years instead of 30...), or,
Two -- we can take a $200,000 "bonus" to get the portfolio back down to $1 million, and continue drawing 40,000 for 30 years (or 42,000 for 25 years).
(This seems counterintuitive, but all that is happening is that we are reducing the amount that would have been left over at the end of the 30 year period, since we didn't get the bear market in the first 5 years.)
So... 4% sets your minimum withdrawal even in bad times, but you can adjust upwards following good years.
I'm not sure why you feel we should be talking 4.65, to include Social Security, rather than 4%, the nominal SWR for a portfolio without outside cash infusions. While everyone agrees that the individual differences in our situations are important, it doesn't follow that those outside cash infusions should be averaged in when we are talking about the SWR of a portfolio in its withdrawal phase. We don't insist that everyone plan for a lifespan of the national average, why treat SS any differently? As far as I am aware, none of the dozens of SWR research papers or tools impute outside cash in their results - most don't even allow for it.
The issue of Social Security itself is not by any means universally accepted. The year I retired, Congress decided that full SS payments would not go to people at 65, but not until 67, by the time I reach that age. To Congress, it was a "safe" decision as it would not affect anyone they considered currently retired (i.e., over 65), and they built in a 10 year "safety zone" for people 55 and older.
Unfortunately for many who retired early, money they had perhaps counted on was just snatched away.
Congress could as easily decide this year that it will be 70, so my outside income will be at least 2 and could be 5 years later than I planned. With decades for political winds to change how SS works for many ERs before we can collect, most of us build our go/no-go plans based on what we think we can control, not on proceeds in 2020 of today's government programs, especially when those programs are in financial trouble and have had rule changes in the past few years. (I say "
think we can control" because there is no telling when the political winds might shift enough to start taxing portfolio assets as well as income.)
In any event, not everyone
gets Social Security. Many state and local governments opted out on behalf of their employees. Any person who spent their career working overseas (except federal employees). The Amish (although I doubt they are big FIRECalc users anyway -- you kinda need electricity). Or the roughly 15% of FIRECalc users who are non-US residents.