FIRE Calculator
Financial Independence Retire Early Planning
Calculate funds needed for FIRE (Financial Independence, Retire Early). Based on the 4% rule, simulate the amount needed for financial freedom and time to reach it.
🔥 What is FIRE?
FIRE (Financial Independence, Retire Early) is a lifestyle aiming for financial independence and early retirement. The core is the "4% Rule" - save 25x your annual expenses and you can withdraw 4% annually indefinitely. Example: $3K/month expenses → $900K needed.
💼 Severance Pay Calculator
About Severance Pay
- • Paid to employees who worked 1+ years.
- • Must be paid within 14 days of resignation.
- • Retirement income tax applies separately.
- • Actual amount may vary by company policy.
📐 FIRE Core Formulas
FIRE Target = Annual Expenses × 25 (4% withdrawal rate)
Lean FIRE = Essential Expenses × 25 (frugal)
Fat FIRE = Comfortable Expenses × 25 (luxurious)
Time to FIRE = ln(Target/Assets × (r/Savings Rate) + 1) / ln(1+r)
📝 How to Use FIRE Calculator
- Enter monthly or annual living expenses
- Enter current savings/investments
- Enter monthly savings amount
- Enter expected investment return (usually 6-8%)
- View FIRE target amount and time to reach it
📊 FIRE Targets by Monthly Expenses
| Monthly | Lean FIRE | Standard | Fat FIRE | Annual Need |
|---|---|---|---|---|
| $1,500 | $450K | $450K | - | $18K |
| $2,000 | $600K | $600K | - | $24K |
| $2,500 | - | $750K | $750K | $30K |
| $3,000 | - | $900K | $900K | $36K |
| $4,000 | - | - | $1.2M | $48K |
| $5,000 | - | - | $1.5M | $60K |
🎯 FIRE Achievement Strategies
- Maintain 50%+ savings rate (key factor)
- Lean FIRE: Frugal living for faster achievement
- Fat FIRE: Maintain comfortable lifestyle
- Barista FIRE: Part-time income for early FIRE
- Coast FIRE: Build principal, let compound growth work
- Dividend stocks/ETFs for stable cash flow
📚 国別の計算ガイド
計算ロジック
金融・ローン・比率・単位変換の公開標準を使用します。
参照範囲
公開された基準と各国で一般的な運用慣行を参照します。
前提条件
税率・手数料・上限は地域や金融機関で異なります。
結果の読み方
結果は基準シナリオとして活用してください。最終判断前に金融機関見積と税務条件を比較してください。
ロケール既定値
通貨: JPY
単位: metric
税計算モデル: US payroll estimate
法規上の注意
本ツールは国別プリセットによる概算です。実際の契約条件や法的上限は金融機関・地域法令により異なる場合があります。
推奨アクション
- 申込前に最低2〜3社の条件を比較してください。
- 手数料・税務・繰上返済条項を書面で再確認してください。
- 金利+1〜2%と収入減少のストレスケースも確認してください。
実際の契約前に、必ず現地機関の最新条件を確認してください。