Fat FIRE Calculator
Retire early and live luxuriously. Fat FIRE is financial independence with a generous, unconstrained lifestyle — typically £80,000+ per year.
Your Details
Fat FIRE Number
£2,857,143
At 3.5% withdrawal
Years to FIRE
41 yrs
FIRE age: 71
Coast FIRE Number
£267,608
Invested today to coast
Annual Contribution
£10,000
Needed to hit target
Portfolio Projection
Assumes 7% nominal annual return. Not inflation-adjusted.
What is Fat FIRE?
Fat FIRE is financial independence at a high standard of living — business class flights, premium healthcare, private schools, regular holidays, and no financial constraints. It typically requires an annual budget of £80,000 to £200,000 or more, meaning a portfolio of £2m–£5m+.
Fat FIRE practitioners often use a lower withdrawal rate (3–3.5%) for extra safety, because the stakes are higher — both in terms of portfolio size and lifestyle expectations. A market crash in early retirement is much more damaging when you're withdrawing £120,000/year than £20,000.
Fat FIRE vs other FIRE variants
| Variant | Annual Income | Portfolio Needed | Lifestyle |
|---|---|---|---|
| Lean FIRE | £15k–£25k | £375k–£625k | Frugal |
| FIRE | £25k–£50k | £625k–£1.25m | Comfortable |
| Fat FIRE | £80k–£200k+ | £2m–£5m+ | Luxurious |
| Barista FIRE | Any | Reduced by PT income | Semi-retired |