28/07/2026
The 4% rule is one of the most famous concepts in the world of financial independence.
It is simple: build a portfolio worth 25 times your annual expenses, withdraw 4% per year, and you should be able to retire without running out of money.
But the problem is that the 4% rule could make you retire too early… or too late.
Too early, because you might underestimate the risks and misunderstand the assumptions behind the rule and believe you are financially independent when you’re not.
For example I’ve seen people say: well the 4% rule works because on average the stock market returns 7 to 9% per year. So taking 4% is safe. This is, of course, completely wrong.
But also too late, because you might be saving and investing for years longer than necessary because you are using a rule that does not fully match your situation as an investor living in Belgium.
In this episode, I am joined once again by Toon Cuypers. We are going to break down the research behind the 4% rule and show you how to adapt it to your own situation.
You can find it here: https://www.youtube.com/watch?v=9ouGmF5A5-Y
Here is what you'll learn:
- how much money you really need to achieve financial freedom,
- why the 4% rule is only a starting point and not a complete retirement plan,
- the hidden assumptions that can change your answer by hundreds of thousands of euros,
- how Belgian investors should think about their portfolio, pension, and withdrawal strategy,
- and how to build a simple, evidence-based plan that gives you confidence about your financial future.
By the end of this episode, you will have a much clearer framework to calculate your own freedom number and build a realistic investment plan based on evidence — not just a simple rule of thumb.
By the way, if you’re new to index investing and you would like to get my blueprint on how to build wealth on autopilot, using evidence-based investing optimized for Belgian taxes, make sure to watch the free workshop on the FIRE Belgium website. It’s the best way to start and it’s my gift to you.
🎓 Free Interactive Workshop: https://firebelgium.com/investingworkshop
Also, towards the end of the episode, we use the Financial Independence Calculator, to help you estimate your time to FI, including Belgian taxes, such as the new tax on capital gains. You can find it here:
📊 FI Calculator (free): https://firebelgium.com/ficalculator
Other important links:
📖 Beginner's Guide: https://bit.ly/FIREBGuide
🌐 FIRE Belgium: https://firebelgium.com
👥 Community: https://www.facebook.com/groups/FIREBelgium
🎧 Spotify: https://open.spotify.com/show/0Pn2Gu1kSM5xtOgH3osjU7
🎧 Apple Podcasts: https://podcasts.apple.com/us/podcast/the-fire-belgium-show/id1632972120
🎓 Free Interactive Workshop: https://firebelgium.com/investingworks...