I did a Lean FIRE so my spending was much lower. Mr. Markets been nice so I've bumped up my spending but Covid dropped it back again. Im happier spending less and being unemployable than working and spending more.I'm a fan of RPM. Easy to use and forced me to break expenses out in categories.
As others said, it's pessimistic as Monte Carlo methods don't factor in normal behavior. However the tools worse case matched my simple spreadsheet worse case of two double digit down years followed by 5 side ways years.
Some small gotchas:
It may say the plan fails. If it has a 30% chance of failing at a point when I have a less than 10% chance of being alive I'm counting it as a 3% chance of failure. I think I can change my behavior to account for that.
Essential expenses can be partly discretionary expenses. That car can last longer than expected. My every 5 year car is on year 8.
I never think to input residual values. I'm looking at an RV and a high end one caused a problem, But if I add 30% of the price back in 8 years from now the plan works.
Does the Fidelity Retirement Analysis tool treat expenses tagged as essential difference than those tagged as discretionary? I just have the mortgage and healthcare as essential expenses and everything else in a custom expense bucket called "discretionary" and it is tagged as discretionary expense.
Just want to make sure I'm inputting the data correctly in the tool.
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