FIRE

Peter Adeney’s (Mr. Money Mustache) blog popularized FIRE with practical tips for extreme frugality, high savings rates (50-70%), and investment strategies.

In a nutshell he told everyone that if they stopped driving giant SUVs and started riding bikes and eating lentils, they could quit their soul-crushing cubicle jobs by age 30. It caught on and evolved; and now we have “flavors” of FIRE for every type of situation/personality.

Core Principles of FIRE

Intentional Living: Focusing spending on what brings true happiness, not excess. 

High Savings Rate: Saving 50-70% of income.

The 4% Rule: Withdrawing 4% of savings annually (adjusted for inflation) to make it last.

The Rule of 25: Saving 25 times your annual expenses to retire.

Flavors of FIRE

1. Fat FIRE (The “Baller” Route)

This is for people who want to retire early but still want to eat at restaurants that have cloth napkins. You’re looking at a budget of $100k+ a year.

• The Vibe: You worked like a dog, made the big bucks, and now you want to travel without staying in a hostel.
• The Catch: You have to save a massive “Nest Egg” (usually $3M+).

2. Barista FIRE (The “Semi-Retired” Route)

You’ve saved enough to cover your rent/mortgage, but you still work a low-stress, part-time job to cover the fun stuff (and often, the health insurance) until “retirement age” (eligible to collect social security and enroll in Medicare).

• The Vibe: You quit the corporate rat race to work at a bookstore or a coffee shop because you want to be there, not because you have to be.
• Why it’s Frugal: It gets you out of the office years earlier than the other methods.

3. Coast FIRE (The “Time is on My Side” Route)

You front-load your savings in your 20s or 30s until you hit a “critical mass.” Once that’s done, you stop saving for retirement entirely. You just work enough to pay your current bills while your investments “coast” to the finish line until “retirement age” (eligible to collect social security and enroll in Medicare).

• The Vibe: The ultimate frugal hack. You let compound interest do the heavy lifting while you live your life.

4. Lean FIRE (The “Minimalist” Route)

This is for the person who has mastered the art of “No.” You live on the bare essentials—think $30k–$40k a year.

• The Vibe: You’re retired, but you’re probably still cutting your own hair and camping for vacation.
• The Risk: One major dental emergency could send you back to a 9-to-5.

5. Poverty FIRE (The “Extreme” Route)

This is the absolute floor of the movement. While Lean FIRE might involve a $40k budget, Poverty FIRE is for the people who have figured out how to live a meaningful life on $20k a year or less.

• The Vibe: It’s not about being “poor”; it’s about radical efficiency. It usually involves “geo-arbitrage” (moving to a very low-cost area or even abroad), growing your own food, or living in a tiny home or van.
• The Frugal Truth: This is the fastest way to freedom, but it has the smallest margin for error. You have to be a master of the “Fix-It-Yourself” lifestyle because you won’t be hiring a plumber or a mechanic.
• The Risk: It’s highly susceptible to inflation. If the price of eggs doubles, you feel it immediately.

FIRE Types Summary

Strategy	Yearly Budget	Lifestyle Vibe	Frugal Skill Level
Fat FIRE	$100k+	The Baller. You want the corporate salary without the corporate job.	Low: You’d rather pay someone else to fix the sink.
Coast FIRE	Varies	The Auto-Pilot. You front-load your 401k/IRA early, then just “coast.” with a less stressful less stressful job.	Patient: You let the math do the hard work.
Barista FIRE	Varies	The Semi-Retired. You quit the 9-5 but work a fun job for perks/insurance.	Smart: You value your time more than a title.
Lean FIRE	$25k – $45k	The Minimalist. You own a modest home, cook at home, and camp for fun.	Professional: You never pay full price for anything.
Poverty FIRE	Under $25k	The Survivalist. Think tiny homes, gardening, and radical efficiency.	Grandmaster: You can fix anything with duct tape.