Financial Independence

FIRE Guide: How to Achieve Financial Independence

In a nutshell

▸FIRE = having invested assets ≥ 25× your annual expenses (4% rule)
▸With €30,000/year in expenses you need approximately €750,000 invested
▸Main types: Lean FIRE, Fat FIRE, Barista FIRE, Coast FIRE
▸Your country's tax regime and social security affect the calculation
▸Track your progress with DonkyCapital to know when you're FIRE

FIRE (Financial Independence, Retire Early) is a movement that has transformed how millions of people think about money, work and freedom. The goal is not necessarily to stop working at 35, but to build a portfolio that generates enough passive income to cover living expenses without depending on a salary.

The FIRE path has some important specificities depending on your country: capital gains taxation, social security rules, regional cost of living differences and a slowly maturing financial culture. This guide helps you understand the concrete numbers and how to build your plan.

The 4 Types of FIRE: Which One Is Yours?

Lean FIRE

~€500,000

Minimalist lifestyle, low expenses (under €25,000/year). Total freedom but few luxuries.

Fat FIRE

€1,250,000+

Comfortable life without compromises, high expenses (€50,000+/year). Requires a significant portfolio.

Barista FIRE

Variable

Partial portfolio + part-time or occasional work to cover the gap. Less stress, more flexibility.

Coast FIRE

Depends on age

You've invested enough: compound returns will reach your goal on their own. No need to save more, just don't erode the capital.

What Is the 4% Rule and How Does It Work?

The 4% rule comes from the Trinity Study (1998) which analysed decades of historical US market data. The conclusion: a portfolio invested in stocks and bonds survives annual withdrawals of 4% for at least 30 years in 95% of historical scenarios. In practice, if you spend €30,000 per year, you need €750,000 invested (30,000 ÷ 0.04). It is important to note that 4% is a gross withdrawal rate: if your investments generate returns subject to capital gains tax, the effective net withdrawal rate is lower. Many European experts recommend using 3.5% as a more conservative threshold, especially for those planning a 40+ year early retirement.

What Is Your FIRE Number? How to Calculate It Accurately

Your FIRE number is simply: Annual expenses × 25 (4% rule) or Annual expenses × 28.5 (3.5% rule). The hardest step is not the calculation, but the honest estimate of your expenses. Include rent or mortgage, food, transport, healthcare, holidays, subscriptions and a buffer for unexpected costs. A common mistake is forgetting irregular large expenses: replacing a car every 10 years, renovations, medical expenses. A good practice is to add a 15-20% buffer to estimated expenses.

How Does Taxation Affect Your FIRE Journey?

Capital gains from investments (stocks, ETFs, funds) are taxed differently across countries. In most European countries the rate ranges from 19% to 30%. Accumulating ETFs defer tax until the sale, making them preferable for the accumulation phase. In the drawdown phase, each sale generates a taxable gain: on a gross withdrawal of €30,000, if €10,000 is a capital gain taxed at 26%, you pay €2,600 in taxes, so the net withdrawal is €27,400. This means your FIRE number must be calculated on gross expenses including estimated taxes, not net. Tools like DonkyCapital help you track accumulated capital gains and plan withdrawals optimally.

How Many Years Does It Take to Reach FIRE?

The most important variable is not how much you earn, but your savings rate: the percentage of net income you invest each month. With a 50% savings rate, regardless of income, you reach FIRE in about 17 years (assuming a 5% real annual return). With 70% it takes 8-9 years. With 20% it takes over 40 years. Your cost of living determines your FIRE number, and geoarbitrage — accumulating in a high-income area then retiring somewhere with lower costs — is a powerful accelerator used by many FIRE practitioners.

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The FIRE Plan in 5 Steps

Calculate your real expenses

Track every outflow for 3 months. Include everything: subscriptions, medical expenses, social spending. Add 20% for unexpected costs.

Calculate your FIRE number

Multiply annual expenses by 25 (4% rule) or 28.5 (3.5% rule). Consider taxes on withdrawals.

Maximise your savings rate

Increase monthly contributions, reduce discretionary spending, consider additional income streams. Every extra % of savings accelerates the journey.

Invest efficiently

Low-cost accumulating ETFs (TER < 0.25%), globally diversified. Avoid high-cost products that erode returns.

Monitor and rebalance

Check the portfolio quarterly, rebalance if necessary. Use DonkyCapital to always have the full picture.

5 Things to Know About Your FIRE Journey

✓Capital gains tax: calculate your FIRE number on gross expenses (taxes included)
✓Accumulating ETFs preferred in accumulation phase: no annual taxation on reinvested dividends
✓Consider voluntary social security contributions to maintain healthcare and pension rights
✓Part-time income during Barista FIRE: check your country's self-employment tax rates
✓Geoarbitrage: lower cost-of-living regions or countries can cut your FIRE number by 30-50%

How to Track FIRE Progress with DonkyCapital

Knowing where you stand on your FIRE journey requires three updated data points: total invested net worth, your monthly savings rate and a growth projection. DonkyCapital automatically aggregates all your brokers (Scalable Capital, DEGIRO, Trade Republic, Moneyfarm and others) into a single dashboard, calculates the true TWR and net-of-fees return. You can set your FIRE number as a goal and see the completion percentage in real time. The FIRE widget shows the estimated years remaining based on your current savings rate and historical portfolio return, turning an abstract goal into concrete progress.

Frequently asked questions about FIRE

How much money do I need for FIRE?

It depends on your lifestyle. The basic formula is: annual expenses × 25. With €25,000/year in expenses you need €625,000. With €40,000/year you need €1,000,000. Add a buffer for taxes on withdrawals.

Does the 4% rule work in Europe?

The 4% rule is based on US historical data. For a European investor with global ETFs it is generally valid, but many experts recommend 3.5% for a 40+ year early retirement. Also account for capital gains taxes on withdrawals in your specific country.

What ETFs should I use for the FIRE journey?

For the accumulation phase: globally diversified accumulating ETFs like VWCE (FTSE All-World) or IWDA (MSCI World) + EIMI (Emerging Markets). Low TER (< 0.25%). For the drawdown phase, many add a bond component to reduce volatility and sequence-of-returns risk.

What is sequence-of-returns risk and how to manage it?

Sequence-of-returns risk is the danger of hitting a bear market in the early years of retirement, when withdrawals erode the portfolio before recovery. Mitigation strategies: keep 1-2 years of expenses in cash, maintain a bond allocation, adopt flexible withdrawals (reduce by 10-20% in negative years).

Can I achieve FIRE on an average salary?

Yes, but it requires discipline and a high savings rate. A net income of €2,500/month with expenses of €1,200 allows saving €1,300/month (52%). At this rate, with a 7% return, FIRE is reached in about 16 years. The key is minimising fixed expenses and maximising the savings rate.

What if the market crashes after I reach FIRE?

Have a contingency plan: cash reserve for 1-2 years of expenses, ability to temporarily reduce withdrawals, potential for part-time work short-term. The 4% rule has historically held even through the worst crises (2008, dot-com) for 30-year periods, but longer periods require more conservatism.

What is Coast FIRE?

Coast FIRE means you've already invested enough that compound growth alone will reach your FIRE number by a target retirement age — without any additional contributions. You can "coast" by just covering your living expenses, without needing to save aggressively. It's a powerful intermediate milestone on the FIRE journey.

Track Your FIRE Journey with DonkyCapital

Import your brokers, set your FIRE goal and monitor progress in real time. Calculate true TWR and estimated years remaining based on your actual data.

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