40K sounded low to me for two of you, so I'm not at all surprised you are seeing 44k to 45k when tracking actual expenditures. In fact, even 45k sounds low to me. I tracked expenses for several years prior to ER and it was about 55k to 60k for just myself, pets, charities.
Wow, that sounds like a lot for one person. I've been spending about $15,000/yr in recent years for a single person, no pets, but I budget about $16,000/yr to cover long term home maintenance. When I FIRE, that will increase to $21,600/yr budgeted "required" living expenses due to higher health care costs, adding a car sinking fund, and edging up the home maintenance budget, which will leave about $26,400/mo for discretionary spending using a 3.4% WR before SS kicks in, and about 2.1% WR after SS kicks in.
Yeah, I've been spending less than $1000/yr on discretionary spending and am budgeting for $26,400/yr on discretionary spending when I FIRE. I'm not sure how I'll actually spend that much on discretionary without giving and throwing money away, but that's what the math tells me I can spend with a conservative 3.4% WR (and 2.1% WR with SS). If I was to use a full 4% WR, my discretionary budget would be about $33,000/yr, which is just getting more ridiculous. If I don't spend the discretionary funds, my WR will effectively be somewhere south of 3.4%. I'm sure I could cut through some serious discretionary funds by doing a lot of travel, but that's something I was never very interested in, so I'm not likely to sink a whole lot into that, and I generally don't like wasting money, while maintaining a savings rate of 70% to 80% in recent years.
Note: The above expenses do not include income taxes as expenses, although taxes are accounted for in coming to the above numbers.
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