Isn't the problem with homegrown charts the sequence of returns thing? That is, if you have a couple of really bad years particularly early on it may deplete the portfolio enough that you can't recover even if you have good returns after that and your "average" return is good. That is why Firecalc is helpful.
You might also try the Fidelity Retirement Income Planner which is pretty detailed.
Originally Posted by Z3Dreamer
Not my post, but what are people comfortable with on a Firecalc %? Is 90% good or do you continue OMY until 95%? Lets say a 35 year retirement with 60/40 AA.
As mentioned, lots of people vary on this. In our case, I'm about a 95-98% person providing I can actual see ways that are not to painful to adjust spending if we fall in the 2% or 5%. DH, on the other hand, is fine with about an 80% success rate. He thinks that it is hard to ever get more precise than that and he figures he can adjust and make anything work if he had to. As it turns, out we actually currently get 100% from Firecalc so it is sort of a moot point for us whether to do it my way or his way.