Retirement & Withdrawal5 分钟阅读

Coast & Barista FIRE — Variations on Early Retirement

Do you have to save yourself to death until you've amassed all your retirement funds? Have you heard of Coast FIRE—"once you've saved enough, you just have to earn living expenses"?

Coast FIRE — Plant a Seed and Entrust It to Compounding

Coast FIRE is a method where, if you plant a "sufficient seed" in your retirement account early, you then leave it to grow to your target retirement funds through compounding alone, without additional saving.

Once you reach this point, you no longer have to force yourself to save for retirement. You only need to earn your current living expenses. Changing jobs, doing work you love, or even reducing your income becomes easier on the mind. It's not a strategy to bring retirement itself forward but to be "freed first from the pressure to save."

Source: ChooseFI 'Am I Coast FIRE?', Financial Samurai 'What Is Coast FIRE'.

Coast FIRE Calculation Example

The skeleton of the calculation is this.

Coast FIRE amount = target retirement funds ÷ (1 + expected annual return)^(years remaining until retirement)

For example, assume you need about $740,000 at 65 and set the real expected return at 5% a year; a 30-year-old has 35 years until retirement. Calculating: $740,000 ÷ (1.05)^35 ≈ $740,000 ÷ 5.5 ≈ about $135,000.

In other words, if this assumption holds, a 30-year-old need only amass about $135,000 and leave it with no additional contributions to have about $740,000 at 65. Of course, this is a story of "when the expected return is realized as-is."

The example is an arithmetic calculation assuming a 5% real return. Actual returns and target amounts differ per person, and no specific amount is being recommended.

Barista FIRE — Half-Retire on Part-Time Work

Barista FIRE is, as the name suggests, a way to half-retire while working part-time, like a Starbucks barista (in the U.S., Starbucks—which gives health-insurance benefits even to part-timers—became the symbol).

Your investment assets cover "part" of living expenses, and light work fills the remaining shortfall. The calculation goes like this: required funds = (annual spending − part-time annual income) × 25.

For example, if annual spending is $37,000 and you earn $15,000 part-time, the gap your investment assets must fill is $22,000. Applying the 4% rule (×25), $22,000 × 25 = $555,000 becomes the target. That's much lower than the $925,000 ($37,000 × 25) needed for full retirement.

Where Coast FIRE relies on "the compound growth of existing investments," Barista FIRE relies on "continued part-time income"—that's the difference.

Source: Saxo 'Barista FIRE explained', Money Flamingo 'Barista FIRE'. The 25x multiple is the reciprocal of the 4% safe withdrawal rate.

The Trap of the Compounding Assumption — Doubting the Numbers

The appeal of these two methods lies in compounding—"a small seed becomes a big tree." But that calculation stands entirely on an assumption called the "expected return."

If the real return over the coming decades were 3% rather than 5%, the amount a 30-year-old must amass in the earlier example becomes much larger than $135,000. Conversely, if a large crash comes just before retirement (sequence risk), you could fall short of the target.

So Coast and Barista FIRE are not "calculate once and done" but plans you must review periodically along with market conditions. It's wise to directly check the maximum drawdown and loss duration while leaving a cushion for when the assumptions go awry.

常见问题

Q. Once I reach Coast FIRE, can I really stop saving?

"If the assumption holds," in theory, yes. But in reality the expected return can miss, so most people choose to reduce rather than completely stop saving, for a cushion. It's safer to understand Coast FIRE not as a "license to make saving zero" but as "psychological breathing room from the pressure."

Q. Does this calculation apply as-is in Korea?

The calculation principle is the same, but the 4% rule and the 25x rule are rules of thumb based on past U.S. data. Korea has different systems like the National Pension and health insurance, and a different market history. Rather than the numbers themselves, it's important to understand the skeleton of "savings rate, compounding, and required income" and adjust conservatively to your own situation.