dunkelblau
Recycles dryer sheets
only 110%.... that's just "FIRE" (re: the above lettuce comment)
The I.R.P. define it as, at least 2 1/2 X of income with all needs and most all "wants" True FatFIRE participants can, for example, walk right into dealership and pay cash for whatever vehicle they want....
IIRC there's a book many on this board swear by that defined thresholds on a related parameter at half the average and twice the average. Not quite the same, though, because that was (appropriately IMO) normalized by age and income, which I imagine greatly reduces the spread.
This brings up another distinction -- between fastfire and slowfire. Many here chose to exit fast and lean instead of occupying their desks for another decade to go out slow and fat. So perhaps a better comparison metric could be annual spending capacity multiplied by expected duration?