FIRE (Financial Independence, Retire Early) Calculator
Determine your exact FIRE number, projected retirement age, and multi-decade wealth trajectory. Explore Lean FIRE, Regular FIRE, Fat FIRE, and Coast FIRE scenarios with inflation-adjusted compounding.
Exact FIRE Target Calculation
Calculates exact portfolio needed based on your annual spending and safe withdrawal rate.
Real Inflation Trajectory
Multi-decade year-by-year modeling adjusted for inflation with downloadable CSV reports.
Lean, Fat & Coast Tiers
Side-by-side comparison across minimal, standard, luxury, and Coast FIRE targets.
FIRE Milestone & Early Retirement Modeling Engine
Empirical portfolio modeling based on the Trinity Study 4% Safe Withdrawal Rule & real inflation-adjusted compound returns.
Portfolio & Macro Parameters
Real Growth Rate: 5.37% / year
The Trinity Study demonstrates a 4% withdrawal rate sustains a portfolio for 30+ years with 95%+ historical probability.
Capital required to generate $48,000 annual passive income.
Achievable in 20 years (2046).
Investing larger portions directly reduces years to FIRE.
Inflation-protected withdrawal rate (4%) in retirement.
Current Journey to Financial Independence
$65,000 accumulated of $1,200,000 target.
FIRE Strategy Variations
Frugal, minimalist lifestyle covering essential necessities ($36,000/yr).
Maintains current lifestyle and spending ($48,000/yr) without compromise.
Abundant lifestyle with travel, luxury, and extra buffer ($64,800/yr).
Invested today, this grows to your FIRE number by age 65 without contributing another cent.
Compound Growth & Portfolio Trajectory
Year-by-year modeling of portfolio capital accumulation adjusted for inflation.
| Year (Age) | Starting Capital | Annual Contribution | Compound Returns | Ending Net Worth | % to FIRE |
|---|---|---|---|---|---|
| 2027 (Age 29) | $65,000 | $30,000 | +$4,293 | $99,293 | 8.3% |
| 2028 (Age 30) | $99,293 | $30,000 | +$6,133 | $135,425 | 11.3% |
| 2029 (Age 31) | $135,425 | $30,000 | +$8,072 | $173,497 | 14.5% |
| 2030 (Age 32) | $173,497 | $30,000 | +$10,114 | $213,612 | 17.8% |
| 2031 (Age 33) | $213,612 | $30,000 | +$12,267 | $255,879 | 21.3% |
| 2032 (Age 34) | $255,879 | $30,000 | +$14,535 | $300,413 | 25.0% |
| 2033 (Age 35) | $300,413 | $30,000 | +$16,925 | $347,338 | 28.9% |
| 2034 (Age 36) | $347,338 | $30,000 | +$19,443 | $396,781 | 33.1% |
| 2035 (Age 37) | $396,781 | $30,000 | +$22,096 | $448,876 | 37.4% |
| 2036 (Age 38) | $448,876 | $30,000 | +$24,891 | $503,767 | 42.0% |
| 2037 (Age 39) | $503,767 | $30,000 | +$27,836 | $561,603 | 46.8% |
| 2038 (Age 40) | $561,603 | $30,000 | +$30,940 | $622,543 | 51.9% |
| 2039 (Age 41) | $622,543 | $30,000 | +$34,210 | $686,753 | 57.2% |
| 2040 (Age 42) | $686,753 | $30,000 | +$37,655 | $754,408 | 62.9% |
| 2041 (Age 43) | $754,408 | $30,000 | +$41,285 | $825,693 | 68.8% |
| 2042 (Age 44) | $825,693 | $30,000 | +$45,110 | $900,803 | 75.1% |
| 2043 (Age 45) | $900,803 | $30,000 | +$49,141 | $979,944 | 81.7% |
| 2044 (Age 46) | $979,944 | $30,000 | +$53,387 | $1,063,331 | 88.6% |
| 2045 (Age 47) | $1,063,331 | $30,000 | +$57,862 | $1,151,193 | 95.9% |
| 2046 (Age 48)FIRE Reached | $1,151,193 | $30,000 | +$62,576 | $1,243,769 | 100.0% |
| 2047 (Age 49)FIRE Reached | $1,243,769 | $30,000 | +$67,544 | $1,341,313 | 100.0% |
| 2048 (Age 50)FIRE Reached | $1,341,313 | $30,000 | +$72,778 | $1,444,091 | 100.0% |
| 2049 (Age 51)FIRE Reached | $1,444,091 | $30,000 | +$78,293 | $1,552,383 | 100.0% |
| 2050 (Age 52)FIRE Reached | $1,552,383 | $30,000 | +$84,103 | $1,666,487 | 100.0% |
| 2051 (Age 53)FIRE Reached | $1,666,487 | $30,000 | +$90,226 | $1,786,713 | 100.0% |
| 2052 (Age 54)FIRE Reached | $1,786,713 | $30,000 | +$96,677 | $1,913,390 | 100.0% |
| 2053 (Age 55)FIRE Reached | $1,913,390 | $30,000 | +$103,475 | $2,046,865 | 100.0% |
| 2054 (Age 56)FIRE Reached | $2,046,865 | $30,000 | +$110,637 | $2,187,501 | 100.0% |
| 2055 (Age 57)FIRE Reached | $2,187,501 | $30,000 | +$118,183 | $2,335,684 | 100.0% |
| 2056 (Age 58)FIRE Reached | $2,335,684 | $30,000 | +$126,134 | $2,491,819 | 100.0% |
| 2057 (Age 59)FIRE Reached | $2,491,819 | $30,000 | +$134,512 | $2,656,331 | 100.0% |
| 2058 (Age 60)FIRE Reached | $2,656,331 | $30,000 | +$143,340 | $2,829,671 | 100.0% |
| 2059 (Age 61)FIRE Reached | $2,829,671 | $30,000 | +$152,641 | $3,012,311 | 100.0% |
| 2060 (Age 62)FIRE Reached | $3,012,311 | $30,000 | +$162,441 | $3,204,753 | 100.0% |
| 2061 (Age 63)FIRE Reached | $3,204,753 | $30,000 | +$172,767 | $3,407,520 | 100.0% |
| 2062 (Age 64)FIRE Reached | $3,407,520 | $30,000 | +$183,647 | $3,621,167 | 100.0% |
| 2063 (Age 65)FIRE Reached | $3,621,167 | $30,000 | +$195,111 | $3,846,279 | 100.0% |
| 2064 (Age 66)FIRE Reached | $3,846,279 | $30,000 | +$207,191 | $4,083,469 | 100.0% |
| 2065 (Age 67)FIRE Reached | $4,083,469 | $30,000 | +$219,918 | $4,333,387 | 100.0% |
| 2066 (Age 68)FIRE Reached | $4,333,387 | $30,000 | +$233,328 | $4,596,715 | 100.0% |
| 2067 (Age 69)FIRE Reached | $4,596,715 | $30,000 | +$247,458 | $4,874,173 | 100.0% |
| 2068 (Age 70)FIRE Reached | $4,874,173 | $30,000 | +$262,346 | $5,166,519 | 100.0% |
| 2069 (Age 71)FIRE Reached | $5,166,519 | $30,000 | +$278,033 | $5,474,552 | 100.0% |
| 2070 (Age 72)FIRE Reached | $5,474,552 | $30,000 | +$294,561 | $5,799,113 | 100.0% |
| 2071 (Age 73)FIRE Reached | $5,799,113 | $30,000 | +$311,977 | $6,141,090 | 100.0% |
| 2072 (Age 74)FIRE Reached | $6,141,090 | $30,000 | +$330,327 | $6,501,416 | 100.0% |
| 2073 (Age 75)FIRE Reached | $6,501,416 | $30,000 | +$349,661 | $6,881,078 | 100.0% |
| 2074 (Age 76)FIRE Reached | $6,881,078 | $30,000 | +$370,033 | $7,281,111 | 100.0% |
| 2075 (Age 77)FIRE Reached | $7,281,111 | $30,000 | +$391,499 | $7,702,610 | 100.0% |
| 2076 (Age 78)FIRE Reached | $7,702,610 | $30,000 | +$414,116 | $8,146,726 | 100.0% |
Understanding Financial Independence & the 4% Rule
The FIRE movement is built upon empirical portfolio research from the Trinity University study. By maximizing your savings rate and investing in diversified asset classes, you can achieve work optionality decades ahead of schedule.
1. What is the 4% Rule?
Originating from the 1998 Trinity Study, the 4% rule states that an investor with a 50/50 stock-to-bond portfolio can safely withdraw 4% of their initial portfolio value in year one (adjusted annually for inflation) for 30 years without running out of money.
2. Why Savings Rate Matters More Than Income
Your savings rate determines how many years of living expenses you accumulate per year of work. At a 10% savings rate, it takes 9 years to save 1 year of expenses. At a 50% savings rate, every single year of work buys you 1 year of financial freedom.
3. What is Sequence of Returns Risk?
If a market crash occurs in the first 3-5 years of early retirement, withdrawing fixed living expenses can permanently impair portfolio principal. Modern FIRE practitioners mitigate this using a 2-year cash buffer, bond tents, or flexible spending guardrails.
4. Coast FIRE vs. Barista FIRE
Coast FIRE means your existing portfolio is large enough to grow into a full retirement nest egg by traditional age without further contributions. Barista FIRE involves stepping down to a lower-stress or part-time job to cover baseline living expenses while letting investments compound untouched.