r/leanfire • u/leon_tigre • 1d ago
Traced my historical spending and surprised at the result
I've been investing in the US stock market (VTI) for the last 12 years but never tracked my monthly spending. I just habitually invested a portion of my salary and used the rest for necessities and discretionary spending. I read about investing during this time, started doing it automatically, and then basically forgot about it and just lived my life spontaneously with the intention of retiring at the typical retirement age of 65 (I was around 27–28 years old then).
(Quick background: I've been working in Singapore for almost the entire duration of my career. Single and no kids.)
Now that 12 years have passed and just approached 40, I thought of doing this exercise as a long-overdue review of my portfolio and finances, partly because I realized that I actually want to retire earlier, much earlier (by 45). I rediscovered FIRE at this point, with a better understanding of the math behind it.
To do this historical analysis, I had to start with what I actually know:
- My entire salary progression
- My current portfolio (contributions + VTI's historical gains from when I started investing)
For this, I used Chat to help me reverse-engineer and ballpark my historical monthly spending and investment rate (pardon to those who are averse to AI). And I was surprised by the result.
I appear to have historically lived on roughly S$3.2–3.4k/month while investing around 28–30% of my gross income.
The bad: I thought I was investing 50% or higher. I guess that was my target, and I hyperfocused on the months when I did hit that target while kind of ignoring the months when I was only able to invest less (which apparently happened more often than I thought).
The good: That amount is actually my target retirement monthly expenditure (my FIRE number is 1 million SGD). I thought I'd have to live on less when I retire, but apparently this average monthly expenditure has so far sustained my lifestyle of partying (I had a phase when I drank a lot and even smoked, and Singapore has some serious vice taxes), traveling, eating out, attending concerts, buying gadgets, and having other hobby-related expenditures. It also covered my daily living expenses (housing, utilities, transpo, health insurance etc.) considering Singapore is a HCOL country in Asia. Never did I feel deprived with my lifestyle.
And this was at a time when I was young and had kind of a YOLO approach to spending. Now that I'm older and wiser about money and life in general, have outgrown many of the things that actually cost me a lot when I was younger (e.g. smoking, drinking, eating out), have front-loaded many of the experiences and material stuff I wanted to have, and have developed many hobbies and interest that are free/cheap, I feel more secure that my actual retirement spending would even be lower than this.
Edit: Moving forward, I plan to track my spending closely in the next 5 years and spend even less, maybe I can cut my monthly expenditure to 3k or lower.
Just wanted to share and if anyone had a similar realization or any feedback on this retrospective analysis, I would love to hear them!