The Major Money Milestones as you Build Wealth

Building wealth can often feel like an arbitrary process – something you do throughout life because you know you should. Eventually – someday in the far future – you’ll be able to retire. Before then, you must keep working your ass off and advance in your career.

It doesn’t have to be like this – far from it, in fact. Building long-term wealth is not a black and white process where one minute you can suddenly drop everything and retire. You reach a spectrum of major money milestones along the way. These milestones mark key stages on the path to financial independence – and each one changes your life in ways you might not expect.

The key money milestones on the path to financial independence are:

1. Becoming debt free
2. Building an emergency fund
3. Having FU money
4. Reaching the crossover point
5. HalfFI
6. LeanFI
7. Financial independence (FI)
8. FatFI

Let’s break down each of these money milestones and explore what they mean in practice.

Money Milestone 1: Becoming debt free

This is the very first milestone that everyone must reach in order to build wealth. You’re going to find it very difficult to build wealth if you’re constantly paying interest to someone else. Make sure you pay off all high-interest debt (anything over 5%) before you start your wealth building journey.

Mortgages and student loans are more discretionary (at least in the UK, where student loan repayments are capped relative to income). Sit down and do some mental and literal maths to work out whether you’d be psychologically and mathematically better off paying off these debts quickly, versus building up your investment portfolio earlier.

Money Milestone 2: Fully-funded Emergency Fund

This means an Emergency Fund with 3-6 months’ worth of expenses, in a high-interest, easy-access savings account. Once you’ve done this, you suddenly relieve yourself of unexpected financial burdens, like not being able to pay for a sudden expense with your car or house. With this milestone, you have the power to keep yourself out of further debt more easily.

Money Milestone 3: Having FU Money

This is a rather nebulous concept, but is probably the coolest milestone. FU money gives you the power to stop worrying about money, allowing you to do things like giving the finger to your employer if they do something you don’t like, being able to move out of a toxic relationship or pay for your new phone outright rather than taking out finance.

For example, if your employer tries to downscale your team and pay, you could just say “no thanks, I’m out”, and look for employment elsewhere. Or if they ask you to work extra hours on the weekend, you can just say “no thank you”. It’s great. It gives you more power over your employer – not the ultimate power of being able to quit forever, but enough to, say, take an 18-month sabbatical and explore the world.

Exactly when you reach this is highly subjective. Everyone will have a different interpretation of how much their FU money stash should be. For me, it’s about 4 years’ worth of living expenses. For others, it may be 1 year or less. There’s no set financial goal here – you’ll know when you’ve reached it as you’ll discover a profound sense of financial security and confidence over your employer.

Money Milestone 4: The Crossover Point

This is a rather difficult milestone to have a date for, as it strongly depends on market conditions. The Crossover Point is the first month in your FI journey where market gains exceed the amount of money you earn. This depends on the market conditions and how much you earn. If you have a high income, the Crossover Point will come later on. Either way, it’s still a profound achievement – for the first time, the market has made more money for you than your job! Now that’s worth celebrating.

Money Milestone 5: Half FI

This is when you’ve accumulated half of your total financial independence (FI) goal in your stash. This is a more important milestone than you may think. Due to the effect of compounding, your investments should be growing at ~9% per year in the global stock market (plus any additional contributions you make). This means that you’ve already done most of the leg work by reaching Half FI. In terms of the time taken, you’re about 70% of the way there, as compounding takes off more and more.

This gives you more options. You could consider working part-time – in the knowledge that while you’ll still reach FI, it will take a few years longer. This would open up a world of opportunities for you to spend your time intentionally, allowing you to become a better version of yourself while continuing to work towards full FI.

Money Milestone 6: Having the ability to make a FFLC

FFLC – Fully Funded Lifestyle Change. This is a term that was originally coined by Slowly Sipping Coffee. FFLC doesn’t mean “retiring” in the traditional sense – rather, it means having enough money to make a major lifestyle change. That could be relocating to somewhere with a lower cost of living, starting a business or going part-time so you can spend more time with your family.

Most people who follow the FIRE movement (Financial Independence, Retire Early) end up making a FFLC when they reach FI. It’s easy to think you’ll want to stop working forever and have a life of luxurious recreation, but we’re all made to do some form of work and contribute to society. The difference is that you may not be working for money – rather for joy and personal satisfaction.

Money Milestone 7: LeanFI

This is the point when your investment returns can cover your basic living expenses (food, housing, bills) for the rest of your life. It’s like a lifetime Emergency Fund. These assumptions are based on the Trinity Study, a famous study conducted in 1998 at Trinity University in the US. The researchers attempted to define what the “safe withdrawal rate” would be on an investment pot, based on historical market conditions. In other words, how much money can you take every year, as a proportion of the total amount invested, (75% in the global stock market, 25% in bonds), and have enough to fund your retirement?

Well, the answer they came to was 4% (which is where the 4% rule comes from). That’s because, over the long-term (from 1925-1995 – the time period assessed in the study), the stock market average return was 7% per year. (I like to be more optimistic than this, and typically go for 9%, which is closer to historical returns since 1995.)

Historically, inflation eats 3% of this each year, so you have 4% which you can safely withdraw in the knowledge that, on average, your portfolio will continue to go up in value and cover the rising cost of expenses due to inflation (i.e. increasing by 3% per year, on average). The Trinity Study is now almost 30 years old, and is rather antiquated for today’s investing world. Even so, the founding principles remain unchanged.

So… back to LeanFI. At this point, 4% of your portfolio value is enough to cover these basic living expenses. This means, that no matter what happens, you have enough to live off, forever. Of course, this means no discretionary spending so it wouldn’t be a very fun existence. But it does mean that you could work a few hours per week to cover the extra spending and you’d be set for life.

Money Milestone 8: FI

Congratulations! You’ve reached your Financial Independence number. Now you can retire! Or not. You can do whatever you want – your investment pot is large enough to cover your lifestyle for the rest of eternity. Sounds good, doesn’t it? At this point, work becomes entirely optional and you choose how to spend your own time.

Money Milestone 9: FatFI

This is a variation on FI where your investment pot is large enough to cover your current lifestyle – and then some. It’s typically counted at 30x annual expenses, and it’s as sure a thing as a certainty that your money will last forever. It gives you the opportunity to live a more lavish retirement if you want. Or to be outrageously generous with your money.

This stage is not necessary to achieve complete financial freedom, although many people who achieve FI do continue to work for several more years in order to accumulate enough money “just in case”. Personally, I don’t think FatFI is strictly necessary, as you’re trading your time for money at this point. Once you’ve reached a safe withdrawal rate of 4%, the statistics suggest there’s no necessity to keep on growing the investment pot. The maths works for you. It’s more a psychological game now.

Conclusion

Building wealth isn’t a single event — it’s a journey made up of distinct, meaningful stages. Each of these money milestones represents more than just a number in your bank account. They reflect growing freedom, confidence, and control over your life.

From becoming debt-free to reaching financial independence, every step changes your relationship with money. You move from stress and obligation to flexibility and choice. And perhaps most importantly, you begin to realise that wealth is not just about retiring one day – it’s about improving your life along the way.

The real goal isn’t simply to reach FI as quickly as possible. It’s to use each milestone to design a better, more intentional life – one where your time, energy, and attention are spent on things that truly matter. So, pay attention to the journey. Each milestone gives you more power; to live a little more freely, a little more confidently, and a little more intentionally.

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I hope you enjoyed this post! It was a blast to write. 🙂 Here are some other posts you may enjoy:

The shocking truth of the UK’s investing landscape

Why you need to keep your investing fees low

How to build wealth in the UK

How to get ahead with money

A day in my life of intentional living

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