Before You Start
- Basic understanding of your current and expected future annual expenses in EUR
- Access to a spreadsheet (Excel, Google Sheets, or Numbers) or a calculator
- Knowledge of your country’s tax regime on investment withdrawals (or willingness to look it up)
- Awareness that lifestyle, location, and inflation rates will affect your FIRE number
Time needed: 30-60 minutes
What you'll need: Spreadsheet software, internet access, access to your annual expense records, and (optionally) a calculator
Calculating your FIRE (Financial Independence, Retire Early) number in EUR is the foundation of any serious plan to gain financial freedom in Europe. Your FIRE number is the amount of invested wealth you’ll need to live comfortably off your investments—without working—while accounting for inflation, taxes, and your specific European country’s cost of living.
This guide will walk you through the exact steps, with tested formulas, real-life EUR examples for singles, couples, and families, and essential tax and inflation adjustments for EU residents. We’ll also show how to adapt for your location and lifestyle, so you can confidently plan your path to FIRE.
Step 1: Calculate Your Annual Living Expenses in EUR
What to do: Tally up all your expected annual living expenses for retirement, in today’s euros. Include housing, food, transportation, healthcare, travel, hobbies, and a buffer for emergencies. This is your target “retirement spending.”
- Open a spreadsheet and list all expense categories.
- Enter the monthly cost for each, then multiply by 12 for annual totals.
- Sum all categories for your total annual spending in EUR.
Why it matters: Your FIRE number is directly based on your anticipated spending. Underestimating expenses is the most common cause of FIRE plans failing.
What can go wrong: Forgetting irregular or annual expenses (insurance, travel, gifts), or underestimating future healthcare costs—especially if you plan to retire outside your home country.
Example (Single in Portugal):
- Rent: €800/month = €9,600/year
- Food: €300/month = €3,600/year
- Utilities & Internet: €100/month = €1,200/year
- Health insurance: €90/month = €1,080/year
- Transport: €60/month = €720/year
- Leisure & travel: €150/month = €1,800/year
- Miscellaneous: €100/month = €1,200/year
- Total: €19,200/year
Pro Tip
Review your last 12 months of bank statements to avoid missing any expense category. If you plan to move countries, research local cost-of-living data using platforms like Numbeo.
Step 2: Adjust for Inflation
What to do: Decide when you want to reach FIRE, and adjust your annual spending for future inflation. Use a conservative average annual inflation rate (e.g., 2% for the eurozone, 3% for Central/Eastern Europe).
- Use the formula: Future Annual Spending = Current Spending × (1 + inflation rate)years until FIRE
Why it matters: Inflation erodes your purchasing power. If you ignore it, you’ll fall short of covering your real expenses in the future. This is especially critical in Europe, where inflation rates vary by country and can spike unexpectedly.
What can go wrong: Using too low an inflation rate, or forgetting to adjust if your target FIRE date is more than 5 years away.
Example (Family in Germany, €40,000/year, 10 years to FIRE, 2.5% inflation):
- Future Annual Spending = €40,000 × (1.025)10 ≈ €40,000 × 1.28 ≈ €51,200/year
Pro Tip
Use free online compound interest calculators (see this detailed guide) to quickly run these projections for any inflation or time period.
Step 3: Factor In Taxes on Investment Withdrawals
What to do: Research how investment withdrawals are taxed in your intended country of residence during retirement. Common taxes include capital gains tax, dividend tax, and wealth tax. Adjust your annual spending target upward to cover these taxes.
- Check your country’s official tax authority website (e.g., France, Austria).
- Calculate your effective tax rate on investment withdrawals (typically 15-30% in the EU, but varies).
- Adjust your future annual spending: After-Tax Spending = Pre-Tax Spending ÷ (1 - tax rate)
Why it matters: Taxes can significantly reduce your safe withdrawal amount. If you plan to withdraw €40,000 net per year, but face a 25% tax, you’ll need to withdraw €53,333 gross to net your target.
What can go wrong: Assuming all withdrawals are tax-free, or ignoring special rules for pensions, ISAs (UK), or life insurance wrappers (France, Belgium, etc.).
Example (Couple in the Netherlands, €30,000/year, 20% effective tax):
- After-Tax Spending = €30,000 ÷ (1 - 0.20) = €30,000 ÷ 0.8 = €37,500/year (gross)
Pro Tip
Many European investors use accumulating (capitalising) ETFs to defer taxes until withdrawal. Check your broker’s documentation (e.g., Trade Republic Help) for specific tax reporting guidance.
Step 4: Choose Your Safe Withdrawal Rate
What to do: Select a safe withdrawal rate (SWR)—the percentage of your portfolio you’ll withdraw each year. The classic “4% rule” is based on US data. For European investors, a SWR of 3.5–4% is considered prudent, especially given lower expected bond returns and higher taxes in Europe.
- For a more conservative estimate, use 3.5%.
- Formula: FIRE Number = (After-Tax, Inflation-Adjusted Annual Spending) ÷ SWR
Why it matters: A higher withdrawal rate risks running out of money—especially in countries with higher taxes or less robust social safety nets.
What can go wrong: Using a withdrawal rate that’s too high for your country’s market returns or tax regime. Not adjusting for longer retirements (e.g., if you retire in your 40s).
Example (Single, after-tax/inflation spending €25,000, SWR 3.5%):
- FIRE Number = €25,000 ÷ 0.035 = €714,285
Step 5: Adjust for Location and Lifestyle Factors
What to do: Consider how your chosen country and lifestyle will affect your FIRE number. High-cost cities (e.g., Paris, Zurich, Oslo) require a higher FIRE number. Moving to a lower-cost EU country (e.g., Portugal, Greece, rural Spain) can reduce your target significantly.
- Research cost-of-living multipliers using tools like Numbeo or Expatistan.
- Adjust your annual spending and recalculate your FIRE number as in Steps 1-4.
- Factor in dual citizenship or residency options, which may affect taxes and healthcare costs.
Why it matters: Location is the single biggest lever you can pull on your FIRE journey. Many Europeans lower their FIRE number by geo-arbitrage—living in a cheaper country while earning or investing in a higher-earning country.
What can go wrong: Overlooking visa, tax, or healthcare requirements for expats. Assuming you’ll be happy with a lower lifestyle than you truly want.
Example Scenarios:
- Family in Paris: Annual after-tax/inflation spending €60,000, SWR 3.5% → FIRE Number = €1,714,285
- Single in rural Spain: Annual after-tax/inflation spending €18,000, SWR 3.5% → FIRE Number = €514,285
- Couple in Berlin: Annual after-tax/inflation spending €40,000, SWR 3.5% → FIRE Number = €1,142,857
Pro Tip
Use your broker’s investment calculator to run “what-if” scenarios. On Trade Republic, go to Portfolio → Savings Plan → Adjust Amount and Duration to model different FIRE numbers.
Step 6: Run Sensitivity Analysis for Different Scenarios
What to do: Test your FIRE number against various scenarios: higher inflation, lower returns, unexpected expenses, or changes in tax laws.
- Change one variable at a time in your spreadsheet (e.g., SWR drops to 3%, inflation rises to 4%).
- Recalculate your FIRE number for each scenario.
Why it matters: This stress-tests your plan. Real life rarely follows a straight line. The more prepared you are for uncertainty, the more robust your FIRE plan will be.
What can go wrong: Building your plan around a single optimistic scenario. Not planning for black swan events (e.g., sudden medical expenses, a family member needing care, or a eurozone inflation spike).
For more on adapting your plan, see Is a FIRE Lifestyle Realistic for European Families in High-Cost Cities in 2026?.
Common Mistakes When You Calculate Your FIRE Number in EUR
- Ignoring taxes: Many calculators use gross numbers—always adjust for your country’s withdrawal taxes.
- Underestimating inflation: Use realistic, country-specific inflation rates, not wishful thinking.
- Overlooking healthcare: Especially if moving countries, budget for private health insurance.
- Not updating your plan: Recalculate your FIRE number annually as expenses, tax laws, or lifestyle change.
- Assuming the “4% rule” always applies: In some European countries, a 3–3.5% SWR may be safer due to higher taxes and lower expected returns.
Next Steps
- Open a tax-efficient EUR investment account (see this step-by-step guide for European residents).
- Automate your investments using a broker like Trade Republic or DEGIRO.
- Review real EUR-based case studies in Living Off Dividends: Real-Life EUR Case Studies From European FIRE Achievers.
- If you want to boost your savings rate, consider launching a side hustle—see 10 Side Hustle Ideas for European FIRE Seekers.
- Stay informed about how inflation can impact your plan with The Real Cost of Not Investing.
Disclaimer: This article is for educational purposes only and does not constitute financial advice. Always do your own research and consider consulting a qualified financial advisor before making investment decisions.