Guide · Retire early
What is FIRE?
FIRE stands for Financial Independence, Retire Early. It's a simple idea with a big payoff: save and invest a large share of your income, and once you've built about 25 times your annual expenses, work becomes optional. You're financially independent, free to keep working, cut back, or stop entirely.
The core idea: 25 times your expenses
FIRE runs on the same math as any retirement: the 4% rule. Save about 25 times what you spend in a year, and withdrawing 4% a year should cover your costs indefinitely. Spend $40,000 a year and your FIRE number is about $1 million. The whole game is growing the gap between what you earn and what you spend, then investing it. For the full method, see how much you need to retire.
Why your savings rate is everything
The single biggest lever is the share of your income you save, and it matters more than your salary. A high savings rate does two things at once: it builds your nest egg faster and it shrinks the lifestyle you have to fund. That's why two people on the same salary can be decades apart on their timeline.
| Save this much of take-home pay | Working years to independence |
|---|---|
| 10% | ~51 years |
| 25% | ~32 years |
| 50% | ~17 years |
| 65% | ~10.5 years |
| 75% | ~7 years |
Rough estimates starting from zero, assuming about a 5% return after inflation. The exact years shift with your assumptions, but the shape holds: saving more is by far the fastest way to move the finish line closer.
The flavors of FIRE
FIRE isn't one-size-fits-all. The variants below mostly differ by how big a lifestyle you're funding, or the path you take to get there. Tap any one for the full breakdown and the numbers.
Frequently asked questions
What does FIRE stand for?
FIRE stands for Financial Independence, Retire Early. The goal is to save and invest enough that work becomes optional, usually defined as having about 25 times your annual expenses invested.
How much money do you need for FIRE?
The common target is 25 times your yearly spending, from the 4% rule. Spend $40,000 a year and that's about $1 million. Higher spenders aim for more (Fat FIRE), lower spenders for less (Lean FIRE).
What are the types of FIRE?
The main flavors are Lean FIRE (frugal, smaller number), regular FIRE (average lifestyle), Chubby FIRE (comfortable), and Fat FIRE (high spending). Coast FIRE and Barista FIRE describe paths there: coasting on early investments, or covering the gap with part-time work.
How fast can you reach FIRE?
It depends almost entirely on your savings rate. Roughly, saving 25% of take-home pay points to about 32 years, 50% to about 17 years, and 65% to around a decade, starting from zero.
Pick a target that fits the life you want, find your number, then let a high savings rate and time do the rest.
CalcWise is educational and not financial advice. FIRE figures rely on the 4% rule and long-run market assumptions that aren't guaranteed. Consider your own circumstances or a qualified advisor.