How much do I need to save for Lean FIRE?

Assuming a 4% withdrawal rate, you would need to save around $450,000 to generate $18,000 per year in income, which is a common target for Lean FIRE retirees.

What is the difference between Fat FIRE and Barista FIRE?

Fat FIRE typically requires a larger portfolio, around $1 million or more, to maintain a high standard of living in retirement, while Barista FIRE involves saving enough to cover most expenses and working part-time to supplement income, potentially requiring a smaller portfolio of $750,000 or less.

Can I achieve FIRE on an average salary?

Yes, it is possible to achieve FIRE on an average salary, but it will likely require aggressive saving, smart investing, and potentially exploring strategies like geoarbitrage or optimizing your investment portfolio, as discussed in our post on how to retire early on average salary .

What is the 25x rule and how does it apply to FIRE?

The 25x rule (save 25 times your annual expenses) provides a rough guideline for determining the required portfolio size for FIRE. For example, if your annual expenses are $30,000, you would need to save $750,000 (25 x $30,000) to achieve financial independence.

Lean FIRE vs Fat FIRE vs Barista FIRE: A Numbers-Driven Comparison

FIRE (Financial Independence, Retire Early) involves saving aggressively to retire decades early. Within the FIRE community, different flavors have emerged: Lean FIRE, Fat FIRE, and Barista FIRE. Each has its own principles and trade-offs.

Lean FIRE: Extreme Frugality

Lean FIRE proponents save 70% or more of their income, adopting an austere lifestyle. For a person earning $60,000 per year, this means living on $18,000 or less. To calculate the required portfolio size, we can use the 4% rule (withdraw 4% of your portfolio per year, indexed to inflation). If we assume a $18,000 annual income in retirement, the required portfolio size would be $18,000 / 0.04 = $450,000.

Fat FIRE: Luxury Retirement

Fat FIRE involves saving enough to maintain a high standard of living in retirement. For someone earning $150,000 per year, they might need a portfolio of $1,125,000 to generate $45,000 per year in income (using the 4% rule). Here's a breakdown of the calculation:

Desired annual income in retirement: $45,000
Required portfolio size: $45,000 / 0.04 = $1,125,000

Barista FIRE: Part-Time Work

Barista FIRE represents a middle ground, where individuals save enough to cover most expenses and work part-time to supplement their income. Using the Freedom Calculator, let's consider an example: a person saving $30,000 per year aims to retire in 20 years with a portfolio of $750,000 and plans to work part-time to earn an additional $10,000 per year. Here's a breakdown of the calculation:

Annual savings: $30,000
Years until retirement: 20
Projected portfolio size: $30,000 * 20 = $600,000 (assuming no investment returns)
Additional savings needed: $750,000 - $600,000 = $150,000
Part-time income: $10,000 per year

Comparing the Options

To compare the different FIRE flavors, let's consider the following scenarios:

Lean FIRE: $60,000 income, 70% savings rate, $450,000 portfolio size
Fat FIRE: $150,000 income, 50% savings rate, $1,125,000 portfolio size
Barista FIRE: $100,000 income, 30% savings rate, $750,000 portfolio size, $10,000 part-time income

As we can see, each option requires significant trade-offs. Lean FIRE demands extreme frugality, while Fat FIRE requires a high income and large portfolio. Barista FIRE offers a more balanced approach, but still requires careful planning and discipline. You may also want to explore other strategies, such as geoarbitrage for early retirement or optimizing your investment portfolio with tools like Empower vs Wealthfront.

For most people, Barista FIRE may be the most achievable option, as it allows for a more flexible approach to retirement planning. By saving aggressively and planning for part-time work, individuals can create a sustainable retirement income stream without requiring an extremely high portfolio size.

New to FIRE? See our primer at https://freedomcalc.app/what-is-fire.

Tools worth looking at

Affiliate links. We may earn a commission if you open an account, at no cost to you.

Empower — Free net worth tracking, portfolio analysis, and retirement planner. The dashboard serious FIRE chasers actually use.
Acorns — Round-ups that invest your spare change automatically. The lowest-friction way to start investing if you have been putting it off.
Wealthfront — Tax-loss harvesting, a 5% cash account, and direct indexing once you cross $100k. Solid robo for the set-and-forget crowd.