TLDR
- Barista FIRE means your investments cover part of your spending and part-time work covers the rest, so you can leave full-time work before reaching your full FI number.
- Your barista number is the spending your part-time income doesn’t cover, divided by your withdrawal rate.
- Example: spending $4,000 a month, with $2,000 a month from part-time work, needs about $600,000 at a 4% withdrawal rate instead of $1.2 million.
- Saving $1,500 a month at 5% a year after inflation, that’s about 20 years instead of about 30.
- The plan depends on the part-time income lasting. Income from a skill you sell directly usually needs fewer hours and can grow; a low-wage job usually can’t.
Barista FIRE got its name from a picture: you leave the career, take a relaxed job at a coffee shop, and your investments quietly do the rest.
The maths behind it is sound. The picture is the weak part.
The barista number
Your full FI number is what you spend in a year, divided by your withdrawal rate. At 4%, that’s spending times 25.
Your barista number only has to cover the part your work doesn’t. Barista number = (yearly spending − yearly part-time income) ÷ withdrawal rate.
| Part-time income per month | Spending left to cover | Number at 4% | Years saving $1,500 a month |
|---|---|---|---|
| $0 (full FI) | $4,000 | $1.2 million | About 30 |
| $1,000 | $3,000 | $900,000 | About 25 |
| $2,000 | $2,000 | $600,000 | About 20 |
Assumptions: $4,000 a month spending, 5% a year return after inflation, starting from zero. Covering half your spending with part-time work takes about ten years off.
Where the plan is weakest
Everything in that table rests on one line: the part-time income. If it stops, you’re back to needing the full number, and you’ve stopped saving.
So the question that decides whether barista FIRE works isn’t the withdrawal rate. It’s how many hours the $2,000 costs you, and how secure those hours are.
| Way of earning $2,000 a month | Rate (example) | Hours a month |
|---|---|---|
| A part-time job | $15 an hour | About 133, roughly 31 a week |
| Selling a skill directly | $100 an hour | 20, roughly 5 a week |
Thirty-one hours a week isn’t semi-free. It’s most of a job, at a wage someone else sets, with no way to raise it except more hours.
Barista FIRE works best when the barista part isn’t a barista job.
Why a skill makes it stronger
A skill you already use at work, sold directly to clients, does three things a part-time job doesn’t. It needs fewer hours for the same money. You set the rate, so you can raise it. And it can grow past what you need, which means the gap can close from both ends.
My first salary was $1,700 a month. Selling the same skill directly, my first month freelance came to $4,800. The whole story is here. That’s the version of barista FIRE I’d build on: not a lower-paid job, but the same skill at a better rate, for fewer hours.
What it assumes
- The part-time income lasts as long as you need it. Plan for a year when it doesn’t.
- You replace anything your employer was paying for, such as insurance or a pension contribution. Add those costs to your spending before you work out the number.
- Your investments keep growing, or at least aren’t drawn down faster than the withdrawal rate.
Barista FIRE sits between two other milestones. Coast FIRE is when your investments will grow to the full number on their own. Full FI is when they already cover everything. If the dates for each look very different on different calculators, here’s why.
Run your own
Open the calculator and pick “I don’t have a business yet”. Set what you’d build to $1,000 a month, then $3,000, and compare the two dates. If you already sell a skill or run a practice, the six levels of a service business shows what each step does to your date.
Illustrative numbers, not advice. I’m not a licensed adviser; I show the maths and what I did, and you run yours.