ganak.appFIRE Calculator
Calculate your FIRE number for financial independence. See Lean, Fat, Coast & Barista FIRE targets, year-by-year projections, savings rate analysis, and milestone timeline. Works with any global currency.
FIRE Summary
Savings rate, passive income, and progress toward financial independence
20 years to FIRE (Age 50)
FIRE Types Comparison
All five FIRE variants based on your inputs
FI Milestones
Key checkpoints on your path to financial independence
Year-by-Year Projection
Detailed breakdown of portfolio growth each year
| Year | Age | Income | Savings | Portfolio | FI % |
|---|---|---|---|---|---|
| 0 | 30 | $60,000 | $20,000 | $50,000 | 5% |
| 1 | 31 | $60,000 | $20,000 | $73,500 | 7% |
| 2 | 32 | $60,000 | $20,000 | $98,645 | 10% |
| 3 | 33 | $60,000 | $20,000 | $125,550 | 13% |
| 4 | 34 | $60,000 | $20,000 | $154,339 | 15% |
| 5 | 35 | $60,000 | $20,000 | $185,142 | 19% |
| 6 | 36 | $60,000 | $20,000 | $218,102 | 22% |
| 7 | 37 | $60,000 | $20,000 | $253,369 | 25% |
| 8 | 38 | $60,000 | $20,000 | $291,105 | 29% |
| 9 | 39 | $60,000 | $20,000 | $331,483 | 33% |
| 10 | 40 | $60,000 | $20,000 | $374,687 | 37% |
| 11 | 41 | $60,000 | $20,000 | $420,915 | 42% |
| 12 | 42 | $60,000 | $20,000 | $470,379 | 47% |
| 13 | 43 | $60,000 | $20,000 | $523,305 | 52% |
| 14 | 44 | $60,000 | $20,000 | $579,936 | 58% |
| 15 | 45 | $60,000 | $20,000 | $640,532 | 64% |
| 16 | 46 | $60,000 | $20,000 | $705,369 | 71% |
| 17 | 47 | $60,000 | $20,000 | $774,745 | 77% |
| 18 | 48 | $60,000 | $20,000 | $848,977 | 85% |
| 19 | 49 | $60,000 | $20,000 | $928,406 | 93% |
| 20 | 50 | $60,000 | $20,000 | $1,013,394 | 100% |
| 21 | 51 | $60,000 | $20,000 | $1,104,332 | 100% |
| 22 | 52 | $60,000 | $20,000 | $1,201,635 | 100% |
| 23 | 53 | $60,000 | $20,000 | $1,305,749 | 100% |
| 24 | 54 | $60,000 | $20,000 | $1,417,152 | 100% |
| 25 | 55 | $60,000 | $20,000 | $1,536,352 | 100% |
What Is FIRE?
Financial Independence, Retire Early explained
FIRE stands for Financial Independence, Retire Early. It is a movement focused on aggressive saving and investing so that your investment portfolio can cover your living expenses indefinitely, giving you the freedom to stop working for money.
FIRE Number Formula
FIRE Number = Annual Expenses / Withdrawal Rate
At a 4% withdrawal rate, your FIRE number is 25 times your annual expenses. This is based on the Trinity Study which showed that a 4% initial withdrawal rate, adjusted for inflation, historically sustained a portfolio for 30+ years with high probability.
Types of FIRE
Five variants for different lifestyles and risk tolerances
Lean FIRE
Retiring on a minimal budget, typically 60% of current expenses. Suits those comfortable with frugal living. FIRE Number = (Expenses x 0.6) / SWR.
Regular FIRE
Maintaining current lifestyle in retirement. The standard FIRE target using the full 4% rule. FIRE Number = Expenses / SWR.
Fat FIRE
Retiring with a comfortable or luxury lifestyle, typically 150% of current expenses. Provides extra cushion for travel, hobbies, or healthcare. FIRE Number = (Expenses x 1.5) / SWR.
Coast FIRE
Having enough saved that compound growth alone will reach your full FIRE number by traditional retirement age, even with zero additional contributions. Coast FIRE Number = FIRE Number / (1 + real return)^years to retirement.
Barista FIRE
Semi-retiring with a part-time job that covers daily expenses while your investments grow. Reduces the FIRE number because part-time income offsets living costs. FIRE Number = (Expenses - Part-Time Income) / SWR.
The 4% Rule
How much can you safely withdraw each year?
The 4% rule comes from the 1998 Trinity Study. It found that withdrawing 4% of your portfolio in the first year of retirement, then adjusting for inflation each subsequent year, had a high probability of lasting 30 years across historical market conditions.
Safe Withdrawal Formula
Annual Withdrawal = Portfolio Value x Withdrawal Rate
A lower withdrawal rate (3-3.5%) provides more safety for longer retirements. A higher rate (4.5-5%) works for shorter retirements or when supplemented by other income. This calculator lets you adjust the rate to match your risk tolerance.
How This Calculator Works
Inputs, methodology, and assumptions
Enter your after-tax income, annual expenses, and current savings.
The calculator computes your savings rate and FIRE number using the withdrawal rate.
It projects portfolio growth year-by-year using real returns (adjusted for inflation).
All five FIRE variants are computed simultaneously from the same inputs.
Milestones mark key progress points: 25% FI, 50% FI, Coast FIRE, 75% FI, and 100% FI.
Advanced options let you model income growth, inflation, and part-time Barista FIRE income.
Real-World Example
Worked example: $60K income, $40K expenses, $50K saved, 7% return, 4% SWR
A 30-year-old earning $60,000 after tax and spending $40,000 per year has a 33% savings rate and saves $20,000 annually. With $50,000 already invested and 7% nominal returns minus 3% inflation (approximately 3.9% real return), the numbers work out as follows:
Inputs
- After-tax income: $60,000/yr
- Expenses: $40,000/yr
- Current savings: $50,000
- Expected return: 7%
- Inflation: 3%
- Withdrawal rate: 4%
Outputs
- FIRE Number: $1,000,000
- Lean FIRE: $600,000
- Fat FIRE: $1,500,000
- Savings rate: 33.3%
- Years to FIRE: ~26 years
- FIRE Age: ~56
Common FIRE Planning Mistakes
Pitfalls that can derail your financial independence plan
Ignoring inflation when projecting future expenses. Your $40K lifestyle today costs more in 20 years.
Using nominal returns instead of real returns. A 10% return with 3% inflation is only 7% real growth.
Not accounting for healthcare costs, especially before government healthcare eligibility age.
Assuming constant expenses in retirement. Spending often increases in early retirement years.
Focusing only on the FIRE number without building an emergency fund or managing sequence-of-returns risk.
Frequently Asked Questions
Common questions about FIRE, the 4% rule, and financial independence