How to Set Your First FIRE Number as a European: The 2026 Calculators and Assumptions

Setting your FIRE number is the cornerstone of planning for financial independence and early retirement (FIRE) in Europe. While the concept is simple—figure out how much you need invested to live off your portfolio—the European context adds unique twists: taxes, withdrawal rates, and cost of living vary widely. This tutorial will walk you through every step, with actionable examples for Germany, France, and Spain.

For a broader overview of the FIRE movement in Europe, see The 2026 Guide to FIRE in Europe: How to Reach Financial Independence Faster. Here, we’ll focus on the nuts and bolts of calculating your own FIRE number for 2026 and beyond.

Step 1: Understand What a FIRE Number Is (and Why It Matters)

Your FIRE number is the amount of invested net worth you need to safely withdraw enough each year to cover your living expenses—potentially forever. It’s the target that tells you, “Once I reach €X, I can retire (or work by choice).”

• Why it matters: Without a target, your savings and investment plan lack direction.
• What can go wrong: If you underestimate taxes, inflation, or expenses, you risk running out of money.

In Europe, you must also account for:

• Country-specific taxation on investment withdrawals
• Local cost of living differences
• Currency stability (if using EUR vs. other currencies)

Step 2: Calculate Your Annual Spending Needs (in EUR)

This figure is the foundation of your FIRE number. It’s not “how much you make,” but “how much you’ll spend annually in retirement.”

1. Gather 12 months of actual expenses (bank statements, budgeting app, or spreadsheet).
2. Remove any work-related costs (commuting, work clothes, lunches).
3. Add new costs you expect in retirement (e.g., more travel, hobbies).
4. Adjust for inflation if your target retirement is years away (see Step 5).

Example: You live in Berlin, Germany. Your current annual expenses: €28,000. You estimate you’ll need €30,000/year in today’s money for comfort in retirement.

• Why it matters: Underestimating expenses is the #1 reason FIRE plans fail.
• What can go wrong: Forgetting irregular costs (insurance, home repairs) or healthcare.

Step 3: Decide Your Withdrawal Rate (The ‘Safe’ Percentage)

The withdrawal rate is the percentage of your portfolio you expect to withdraw each year, adjusted for inflation. In the US, the “4% rule” is common, but European investors face different economic realities.

For a deep dive, see How Does the 4% Rule Work in Europe (2026 Update)?

• Typical range in Europe (2026): 3.0%–3.5% (conservative), up to 4% (aggressive, may require flexibility)
• Why it matters: Too high, you risk running out of money; too low, you may save more than needed.
• What can go wrong: Using a US-centric rate without accounting for higher taxes or lower market returns.

Example: Let’s take a 3.5% withdrawal rate for Germany, France, and Spain—reflecting moderate European market expectations and safety margins.

Step 4: Adjust for Taxes (Don’t Skip This!)

European investors must account for taxes on investment gains and withdrawals. These vary by country and investment type (e.g., ETFs, stocks, real estate).

1. Research your country’s tax treatment of capital gains and dividends (see official tax authority websites).
2. Estimate your effective tax rate on withdrawals—often 15–30% for capital gains/dividends in Western Europe.
3. Gross up your annual spending need:
   Required before-tax withdrawal = Annual spending / (1 - tax rate)

Example: You need €30,000/year after tax in Berlin. Assume 25% effective tax rate on withdrawals:
Required before-tax withdrawal = €30,000 / (1 - 0.25) = €40,000.

• Why it matters: Taxes are often the biggest “hidden” cost in FIRE calculations.
• What can go wrong: Ignoring taxes can lead to a FIRE number that’s 20–30% too low.

Step 5: Account for Inflation (and Future-Proof Your Number)

Inflation erodes purchasing power over time. Your FIRE number must grow if you’re planning to retire years from now.

1. Find the average inflation rate for your country (Eurostat or national statistics office; recent EU average: 2–3%).
2. Adjust your spending target using the formula:
   Future amount = Current amount × (1 + inflation rate)^(years until retirement)

Example: You’re 10 years from FIRE, with €30,000/year target and 2.5% inflation:
Future spending need = €30,000 × (1.025^10) ≈ €38,400/year (rounded).

• Why it matters: Underestimating inflation means your “safe” withdrawal may not cover future costs.
• What can go wrong: Using today’s expenses for a retirement decades away.

Step 6: Use a 2026 FIRE Calculator (Europe-Focused Tools)

Manual calculations are useful, but modern calculators save time and highlight mistakes. In 2026, top Europe-accessible FIRE calculators include:

• FIRECalc Europe (firecalceurope.com): Customizable for European taxes, currencies, and inflation rates.
• Networthify (EU mode) (networthify.com): Simple, works in EUR, supports variable withdrawal rates.
• Mad Fientist’s FI Laboratory (lab.madfientist.com): Global support, but double-check tax assumptions for Europe.

How to use (example: FIRECalc Europe):

1. Go to firecalceurope.com and choose EUR as currency.
2. Enter your expected annual spending (after-tax), years to retirement, current portfolio, and annual savings.
3. Set your withdrawal rate (e.g., 3.5%).
4. Input your country’s expected investment return, inflation, and tax rate.
5. Click “Calculate” to see your required FIRE number, success probability, and breakdown.

Expected outcome: You’ll see your required net worth for FIRE, with a breakdown by year and probability of not running out of money.

For more on choosing and using calculators, see The Must-Have FIRE Calculators for European Financial Independence Seekers in 2026.

Step 7: See Worked FIRE Number Examples (Germany, France, Spain)

Let’s bring it all together with three country-specific examples. All use the same methodology, but adjust for local taxes and inflation.

Germany (Berlin)

• Annual spending target (today): €30,000
• Years to FIRE: 10
• Inflation: 2.5%
• Withdrawal rate: 3.5%
• Tax on withdrawals: 25% (Abgeltungsteuer + Soli)

Step 1: Future spending need = €30,000 × (1.025^10) ≈ €38,400
Step 2: Gross up for taxes: €38,400 / (1 - 0.25) = €51,200
Step 3: FIRE number = €51,200 / 0.035 = €1,462,857

France (Lyon)

• Annual spending target (today): €28,000
• Years to FIRE: 8
• Inflation: 2.2%
• Withdrawal rate: 3.5%
• Tax on withdrawals: 30% (Prélèvement Forfaitaire Unique)

Step 1: Future spending need = €28,000 × (1.022^8) ≈ €33,200
Step 2: Gross up for taxes: €33,200 / (1 - 0.3) = €47,429
Step 3: FIRE number = €47,429 / 0.035 = €1,355,114

Spain (Madrid)

• Annual spending target (today): €25,000
• Years to FIRE: 12
• Inflation: 2.7%
• Withdrawal rate: 3.5%
• Tax on withdrawals: 21% (general investment income)

Step 1: Future spending need = €25,000 × (1.027^12) ≈ €33,900
Step 2: Gross up for taxes: €33,900 / (1 - 0.21) = €42,911
Step 3: FIRE number = €42,911 / 0.035 = €1,226,029

You should now have a country-specific, inflation- and tax-adjusted FIRE number in EUR, ready for tracking!

Common Mistakes When Setting Your FIRE Number

• Ignoring taxes: Always calculate your number based on after-tax spending needs and gross up for taxes.
• Not adjusting for inflation: If you plan to retire in the future, today’s expenses will not be enough.
• Using a US-centric withdrawal rate: European returns and taxes differ—use 3–3.5% as a starting point, not 4% blindly.
• Forgetting irregular or one-off expenses: Budget for healthcare, home repairs, and travel.
• Not updating your FIRE number annually: Expenses, taxes, and inflation change—so should your target.

Next Steps: Move From Calculation to Action

• Open a European brokerage account (e.g., Trade Republic, Scalable Capital, DEGIRO).
• Set up an automated monthly investment plan (e.g., in Trade Republic: Portfolio → Savings Plan → Select ETF).
• Track your progress annually and update your FIRE number as your situation changes.
• For deeper dives on specific scenarios, see articles like FIRE with a Family: How Couples and Parents Can Achieve Financial Independence in Europe or FIRE for Singles: Achieving Financial Independence as a Solo Earner in Europe.
• Read the parent pillar guide for broader context and advanced strategies.

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.