- FIRE number
- $1,000,000
- Years to FIRE
- 34.8 yrs
- Balance at FIRE
- $1,002,852
Year-by-year breakdown
| Year | Balance | Contributed |
|---|---|---|
| 1 | $16,919 | $16,000 |
| 2 | $24,339 | $22,000 |
| 3 | $32,294 | $28,000 |
| 4 | $40,825 | $34,000 |
| 5 | $49,973 | $40,000 |
| 6 | $59,782 | $46,000 |
| 7 | $70,299 | $52,000 |
| 8 | $81,578 | $58,000 |
| 9 | $93,671 | $64,000 |
| 10 | $106,639 | $70,000 |
| 11 | $120,544 | $76,000 |
| 12 | $135,455 | $82,000 |
| 13 | $151,443 | $88,000 |
| 14 | $168,587 | $94,000 |
| 15 | $186,971 | $100,000 |
| 16 | $206,683 | $106,000 |
| 17 | $227,820 | $112,000 |
| 18 | $250,486 | $118,000 |
| 19 | $274,790 | $124,000 |
| 20 | $300,851 | $130,000 |
| 21 | $328,796 | $136,000 |
| 22 | $358,760 | $142,000 |
| 23 | $390,892 | $148,000 |
| 24 | $425,345 | $154,000 |
| 25 | $462,290 | $160,000 |
| 26 | $501,905 | $166,000 |
| 27 | $544,384 | $172,000 |
| 28 | $589,934 | $178,000 |
| 29 | $638,777 | $184,000 |
| 30 | $691,150 | $190,000 |
| 31 | $747,310 | $196,000 |
| 32 | $807,529 | $202,000 |
| 33 | $872,102 | $208,000 |
| 34 | $941,343 | $214,000 |
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How this is calculated
The FIRE number is annual_spending / (withdrawal_rate / 100). Starting from your current savings, the calculator simulates monthly compounding growth (same model as the compound interest calculator) plus your monthly contribution, month by month, until the balance reaches the FIRE number, then reports the elapsed time. In advanced mode, annual contribution growth increases your monthly contribution by that percentage every 12 months (e.g. raises), and the inflation adjustment shows the final balance in today's purchasing power.
FAQ
What is a "FIRE number"?
Your FIRE number is the portfolio size that could theoretically sustain your annual spending indefinitely, based on a safe withdrawal rate. It's calculated here as annual spending divided by the withdrawal rate (e.g. $40,000 spending at a 4% withdrawal rate = a $1,000,000 target).
What is a safe withdrawal rate, and why does this default to 4%?
A safe withdrawal rate is the percentage of your portfolio you could withdraw each year with a low historical risk of running out of money over a long retirement. 4% is a commonly cited starting point from historical U.S. market research, not a guarantee. Some people use a more conservative 3-3.5% for longer retirements.
How is this different from the compound interest calculator?
The compound interest calculator projects a balance forward from fixed inputs. This tool works backward from a spending target to answer "how many years until my portfolio can support that spending," using the same monthly-compounding growth model.
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Informational tool only. Not financial advice. See our disclaimer.