Coast FIRE number at 30
Coast FIRE means you've invested enough that, even if you never save another dollar, compound growth alone carries you to a full retirement. At age 30, roughly $227,000 invested today would grow to a $1,250,000 nest egg by 65 (assuming a 5% real return) — enough to fund a comfortable retirement. After that, your paycheck only has to cover today's expenses.
Your Coast FIRE number at 30, by return assumption
Coast FIRE is sensitive to the return you assume over the 35 years to 65 — a higher real return means a smaller amount needs to compound:
| Return | Coast number | Growth |
|---|---|---|
| 4% real | $317,000 | 3.9× |
| 5% real | $227,000 | 5.5× |
| 6% real | $163,000 | 7.7× |
What Coast FIRE does and doesn't mean
Hitting your Coast FIRE number is a genuine milestone: your retirement is essentially on autopilot, and you gain the freedom to take a lower-paying but more fulfilling job, go part-time, or stop retirement contributions and spend that money now. It does not mean you can stop working — you still need income to cover current living expenses until you actually retire.
The number rests on two assumptions worth pressure-testing: the return you earn over the years to 65 (markets are uncertain, and a weak stretch early does outsized damage), and the target nest egg itself, which depends on your future spending. Model your own inputs to see how sensitive your coast number is to both.
Where coasting and going barista blur together at 30
By 30, Coast FIRE and Barista FIRE often describe the same life from two angles. Coasting means your invested balance can reach the retirement target on its own, so new retirement savings become optional; the barista version spends that freed-up capacity on a lighter job that covers current costs — frequently for the health coverage or the change of pace.
Hitting the number at this age gives you a genuine fork: keep earning at full tilt and pull retirement earlier, or downshift now and let the portfolio ride. Either way, the dollars you were saving for retirement can be redirected toward life today.
Before leaning on it, stress-test the assumption that matters most. The coast number is highly sensitive to the assumed real return — the after-inflation growth rate you pencil in over thirty-plus years. Rerun it at a lower rate; if the figure holds up under a cautious return the plan is real, and if it only works at an optimistic one, you have not quite arrived.
Common questions
What is the Coast FIRE number at 30?
About $227,000 invested at age 30, assuming a 5% real return, would grow to a $1,250,000 retirement nest egg by 65 with no further contributions. At a 6% real return it's closer to $163,000; at 4%, about $317,000.
Does Coast FIRE mean I can stop working?
No — it means you can stop saving for retirement. You still need enough income to cover your current living expenses until you retire; your retirement savings just grow on their own from here.
What return should I assume for Coast FIRE?
A real (after-inflation) return of about 5% is a common, moderate assumption for a stock-heavy portfolio over a long horizon. Because markets are uncertain, it's wise to check your number against a lower rate too.