Lean FIRE
$1,050,000
Essential spending only at a 4% withdrawal rate.
Estimate your retirement number, the gap against your current trajectory, and the monthly contribution needed to close it.
Create a free account to save your results, track progress over time, and unlock guide-connected features.
Lean FIRE
$1,050,000
Essential spending only at a 4% withdrawal rate.
Base FIRE
$1,500,000
Current desired income at the classic 4% rule.
Buffered FIRE
$1,971,429
15% spending buffer and 3.5% withdrawal rate.
Inflation-adjusted conservative trajectory misses the base FIRE number.
Withdrawal rate is above your selected safe-withdrawal assumption.
| Savings rate | Years to FIRE | Retirement age |
|---|---|---|
| 10% | 36.1 | 71.1 |
| 15% | 32.6 | 67.6 |
| 20% | 29.9 | 64.9 |
| 25% | 27.7 | 62.7 |
| 30% | 25.8 | 60.8 |
| 35% | 24.3 | 59.3 |
| 40% | 22.8 | 57.8 |
| 45% | 21.7 | 56.7 |
| 50% | 20.6 | 55.6 |
Enter your age, target retirement age, desired annual income, current savings, and expected return. The calculator estimates a FIRE-style retirement number using a 4% withdrawal assumption and compares it with your projected savings trajectory.
The monthly contribution estimate is a pure maths output. It does not reference any country-specific accounts, public pension systems, tax rules, or benefits. That keeps the tool useful across the US, EU, and other markets.