Coast FI, Barista FIRE and Work Optional: what's the difference?

Three names for three different moments on the same curve. Coast FI is when you can stop saving. Barista FIRE is when part-time income covers what the portfolio doesn’t. Work Optional is when the job stops being load-bearing.

Maya is 42. She has $242,000 invested, puts in $3,600 a month, and spends $60,000 a year. At a 7% real return she needs $1,500,000 to be fully independent at a 4% withdrawal rate.

Nothing below changes those numbers. The only thing that changes is the question being asked of them, and each question has a different answer and a different date.

Coast FI asks one thing: if I never contribute another dollar, does what I already have grow into my number by the age I want it?

It says nothing about covering your living costs. You still need an income, and the whole income, because your portfolio is busy compounding rather than paying you. What it buys is the freedom to stop optimizing. Take the job with the lower salary. Stop maxing the 401(k). Spend the raise.

For Maya, the question is whether $242,000 compounds to $1,500,000 by 60. It does not. Left alone for 18 years it reaches about $818,000, and she would need roughly $444,000 invested today for growth alone to carry her there.

So she has not passed Coast FI for that age and that spending target, and the gap is large enough that she is not about to. Which is the ordinary case, and worth saying plainly: the milestone gets quoted as though most people have quietly passed it, and the arithmetic is less generous than the story.

Barista FIRE asks whether your portfolio covers enough of your spending that modest work covers the rest. The name comes from taking a job for the health insurance, which tells you how much of the American version of this is really about coverage.

The arithmetic is kinder than people expect. At a 4% withdrawal rate, every $500 a month you keep earning is about $150,000 you no longer need saved. Two days a week at a modest rate can move the date by years.

For Maya, earning $1,500 a month cuts the portfolio she needs from $1.5M to around $1.05M. Same spending, same returns, a target she reaches considerably sooner.

This is the one the app is built around, and it is deliberately not called retirement. Retirement describes stopping. Optional describes the point where the money side of your life no longer depends on the specific job you have now, whether or not you stop.

Plenty of people carry on working past it. The difference is that the work becomes a choice rather than a requirement, which changes how you treat a bad manager, a reorganisation, or a year you would rather spend somewhere else.

For Maya that is $1.5M, and the date the app projects for it is the headline on her dashboard.

Coast FI first, usually by years. Barista FIRE next. Full independence last. The gaps between them are where most of a career happens, and knowing which one you have passed changes what you are allowed to stop doing.

Someone past Coast FI but years from the others is in a specific and underrated position. Their number is already on its way. What they are still working for is the next twenty years of groceries, which is a far smaller problem than the one they think they have.

The dashboard works out the Coast FI answer without being asked. If growth alone reaches your number, the Coast Ready card names the date it happens, and that date is the one most people have never seen for themselves.

For the Barista FIRE version, the Work-for-fun lever in the Scenarios Lab takes an ongoing monthly income and shows what it does to the target and the date.

None of these are defined terms. There is no governing body, no standard formula, and no agreed age to measure Coast FI against. Two calculators can give different answers for the same portfolio and both be reasonable, because they have assumed different target ages or different returns.

So treat the labels as shorthand for questions rather than as thresholds to be certified against. The question is the useful part. Whether you call the answer Coast FI matters a good deal less than knowing you could stop contributing tomorrow.

Everything on this page uses the site’s own baseline: a 7% average real return and a 4% withdrawal rate, both set out in the methodology with what they assume and where they fail.

Can I be Coast FI and still feel broke?

Easily, and it is the normal experience. Coast FI says nothing about your monthly cash. It says your future is funded while your present still needs a salary.

Does Barista FIRE require a barista?

No. Any ongoing income counts: consulting, a part-time version of your current job, something seasonal. The name stuck because of US health coverage rather than because of coffee.

Which one should I be aiming at?

That depends on what you want to change, which is why the app reports a date rather than a label. If you want to stop optimizing, Coast FI is your question. If you want out of full-time work, Barista FIRE is. If you want the job to stop mattering, it is the third one.

Why doesn’t the app use the FIRE vocabulary?

Because the words carry a lot of assumptions about frugality and early exit that do not fit everyone who has the question. The math is the same math. The framing is narrower than the audience.