What Is FIRE? 6 Ways to Reach Financial Independence and How to Find Your Retirement Number
FIRE stands for Financial Independence, Retire Early, but it isn't one rigid plan. Learn the six versions of FIRE and how to calculate the retirement number that fits your life.
Meghan once managed a young guy who was all in on FIRE. His plan was to retire by 40, and he was so committed that lunch was ramen noodles almost every day. Meghan respected the clarity. She also knew immediately it wasn't her version, because what's the point of all that freedom if you can't enjoy a good meal along the way?
Here's the thing: most of us aren't trying to retire at 40 on ramen. But most of us also can't answer a much simpler question. Ask someone their retirement number and you'll usually get a blank stare. "Someday. Hopefully early. With a lot of money." That's a wish, not a plan.
What FIRE actually means
FIRE stands for Financial Independence, Retire Early. The idea is to save and invest enough that your investments can cover your living expenses, so working becomes a choice instead of a requirement.
Two rules of thumb power almost every version of FIRE:
The 25x rule: aim for a portfolio worth about 25 times your annual expenses.
The 4% rule: withdraw about 4% of that portfolio in your first year of retirement, then adjust for inflation.
One caveat worth knowing: the 4% rule was built around roughly 30-year retirements. If you retire much earlier, your money may need to last longer, so many early retirees plan with a more conservative withdrawal rate and a bigger target.
How to find your retirement number
The formula is simple: your annual retirement spending × 25.
Spend $40,000 a year? Your target is about $1 million.
Spend $60,000 a year? About $1.5 million.
Spend $100,000 a year? About $2.5 million.
The input most people skip is the first one. You can't estimate retirement spending if you don't know what you spend today, which is exactly what our Budget Blueprint helps you figure out.
The six versions of FIRE
FIRE isn't one finish line. Think of it as a menu, split into two questions: how much do you want to spend, and how much do you want to keep working?
How much do you want to spend?
Lean FIRE: Retire early on a lean budget. Very low spending, simple living, and freedom that comes from skipping what you don't value.
Original FIRE: Save aggressively, reach 25x your annual expenses, and live off the 4% rule. No part-time work, no side hustle. Meghan's advice if you go this route: build in volunteer work or something meaningful. Purpose doesn't retire when you do.
Fat FIRE: Retire rich, not just free. Typically $100,000+ a year in retirement spending, which means a portfolio of roughly $2.5 million or more.
How much do you want to keep working?
Coast FIRE: You've already done the heavy lifting. You've invested enough that compound growth can carry you to your goal by traditional retirement age, so your paycheck only has to cover today's life.
Barista FIRE (Semi-FIRE): You're kind of retired. Your investments cover most of your life, and a part-time or lower-stress job covers daily expenses and possibly health insurance. Our free Income Streams Tracker can help you see what that extra income adds up to.
FINE (Financial Independence, New Endeavor): You don't want to stop working. You want to switch to work that matters to you, and financial independence gives you room to take bigger risks to do it.
Why Coast FIRE might be closer than you think
Not everyone can save 50% of their income, and you don't have to. Coast FIRE is about front-loading your investing so compounding can take over.
For example, if you're 32 and want about $1.5 million by 65, having roughly $160,000 invested today could get you there with no additional contributions, assuming a 7% average annual return. (That's an illustration, not a guarantee, and inflation means future dollars buy less, so use an inflation-adjusted calculator for your own plan.)
That's the power of time in the market, not timing the market. If your money is still sitting in savings, our free Investing Made Simple Guide covers the five basic steps to start, and the Confident Investor Blueprint ($17) gets you invested in seven days.
What most FIRE content skips
Health insurance: If you retire before Medicare eligibility at 65, you'll need to cover your own health insurance. Build it into your number.
Accessing your money early: Most retirement accounts charge a 10% penalty on withdrawals before age 59½, with some exceptions, so early retirees usually plan a bridge using other accounts.
Your life right now: A plan that makes you miserable today is a plan you probably won't stick with for ten years.
Your move this week
Estimate your annual spending in retirement (start with what you spend today).
Multiply it by 25. That's your number.
Choose the version of FIRE that sounds most like the life you want.
