Calculate your path to financial independence as an internationally mobile professional. Factor in multi-country income, cross-border savings, and geographic arbitrage into your FIRE number.
FIRE Number
€1.4M
Years to FIRE
14 yr
Savings Rate
44%
The FIRE (Financial Independence, Retire Early) movement assumes a predictable cost of living in one location. International professionals can do better — or worse. On the positive side, geographic arbitrage lets you earn in high-income countries and eventually live in lower-cost ones, dramatically reducing your FIRE number. On the negative side, scattered finances, multiple tax obligations, and currency risk add complexity. The key is turning your international lifestyle from a FIRE obstacle into a FIRE accelerator.
Your FIRE number is typically 25× your annual expenses (the 4% rule). But for international professionals, 'annual expenses' is harder to pin down. Will you retire where you live now, or somewhere cheaper? Will healthcare costs change? Will currency shifts affect your spending power? Calculate two FIRE numbers: one for your current location and one for your planned retirement location. The gap between them is your geographic arbitrage advantage.
International professionals often have opportunities to optimise their savings rate through tax-efficient structures: contributing to pension schemes in countries with generous tax relief, using tax-advantaged investment accounts, and timing relocations to minimise tax drag. A savings rate above 50% is achievable for high-income professionals in tax-efficient jurisdictions — and it's the single biggest lever for reaching FIRE faster.
FIRE Number = (Monthly Expenses × 12) ÷ Safe Withdrawal Rate
This calculator computes your FIRE number based on your monthly expenses and a 4% safe withdrawal rate. It then projects your current portfolio forward using your monthly savings and expected investment returns to find when your portfolio crosses the FIRE number. The chart shows your portfolio growth with a reference line at your FIRE target.
With $3,000/month expenses, your FIRE number is $900,000. If you have $50,000 saved and invest $3,000/month at 7% return, you'd reach $900,000 in approximately 14 years. Reducing expenses by $500/month has a double effect: your FIRE number drops to $750,000 AND you save an extra $500/month, cutting the timeline to roughly 10 years.
Experiment with reducing your monthly expenses — every $100/month reduction lowers your FIRE number by $30,000 AND frees up $100/month in savings.
Try different return rates to stress-test your plan. If your timeline still works at 5% returns, it's robust against poor market conditions.
Your savings rate matters more than your income. A household earning $80,000 with a 60% savings rate reaches FIRE faster than one earning $200,000 with a 20% savings rate.
Consider Coast FIRE as a midpoint goal. Once your portfolio can grow to your FIRE number on its own (without further contributions), you only need to cover current expenses.