In our last article, we explored the main flavours of FIRE, Lean, Fat, Barista, Coast, and a few others. Today, we’re going to take a deeper dive into Lean FIRE and why, for many people, it might not be the most practical path. But don’t worry, there’s a smarter way to achieve financial independence faster, without living like a monk.

Lean FIRE is the ultimate minimalist approach: live frugally, cut every unnecessary expense, save aggressively, and retire as early as possible.

For the purposes of this article, let's assume that the average single person in Singapore spends around $1,628 monthly, or about $19,526 annually. 

Using the 25x rule (the common FIRE guideline) and a 4% annual withdrawl rate, you would need roughly $500,000 to retire. On paper, it looks achievable — save around $50,000 per year or about $4,205 per month, and in about ten years, you could hit that number.

But here’s the catch: Lean FIRE assumes extreme discipline and sacrifice. No car, living with parents or roommates, minimal entertainment, zero luxuries. For some, that’s just not sustainable — or enjoyable.

Let’s run a simple scenario:

• Annual income: $70,000
• Annual expenses (Lean FIRE budget): $19,536
• Annual savings: $70,000 - $19,536 ≈ $50,000
  

If you invest this in a low-risk account earning 2% per year, in 10 years, your savings would grow to roughly $608,000. Not bad, right? Enough to retire early, at least by Lean FIRE standards.

But 2% isn’t exciting because your money is barely keeping pace with inflation.

Now let’s consider someone who applies smart investing:

• Same annual savings: $50,000
• Invested in a diversified stock market index or quality businesses, targeting 10% average annual return

After 10 years, this portfolio could grow to $926,000.

Take it one step further: with 15% average annual returns (like disciplined value investing strategies taught in our Value Investing Programme), your 10-year portfolio could reach $1.2 million.

• 4% annual withdrawal = $48,000/year (~$4,000/month)
• That’s enough to cover expenses, and your remaining capital continues growing.

1. Lean FIRE is possible, but restrictive. Extreme frugality is tough to maintain.
2. Smart investing accelerates freedom. With higher returns, you can reach financial independence faster and live more comfortably.
3. The FIRE goal is choice, not austerity. True financial independence is the ability to work because you want to, not because you have to.
4. Start early if you can. Compounding is your most powerful tool. But even if you’re starting later — in your 30s or 40s — disciplined investing can still get you closer to early retirement than you think.

If you want to retire early, live comfortably, and avoid the extreme sacrifices of Lean FIRE, the solution is learning how to invest properly.

The Value Investing MasterClass teaches you how to:

• Identify real, undervalued companies
• Make disciplined investment decisions
• Build a portfolio that grows safely and consistently
• Achieve returns that far exceed basic saving accounts