Coast FIRE Number at 30: How Much to Have Invested
At 30, an example saver needs about $181,290 invested to coast to retirement with no new contributions - and across real market history that plan held up about 82% of the time.
That's roughly what an example saver - $40,000/yr spending, a 5% real return, retiring by 65 - would need invested at 30 to stop contributing and still reach a $1,000,000 target through growth alone. These figures are computed at build time from Coastward's real-history engine, not hand-picked.
What coasting at 30 actually means
By 30 the math still leans heavily in your favour: roughly 35 years of growth does most of the lifting, so the coast number stays modest. Reaching it buys the freedom to change careers, drop to part-time, or simply stop optimising every dollar, while the portfolio you already have keeps compounding toward the target on its own.
The honest part most calculators skip: $181,290 is the straight-line answer. When we replay that exact plan across thousands of real market sequences - crashes in their true order - it reached retirement intact in about 82% of histories. A coast number isn't a guarantee, it's a probability. See how that's computed →
How 30 compares with other ages
Wait until 35 and the same example saver needs $231,377 invested, about 28% more, because growth has 5 fewer years to work. Start earlier, at 25, and the number drops to $142,046, roughly 22% less.
| Starting age | Coast FIRE number | Historical success rate | Full page |
|---|---|---|---|
| 25 | $142,046 | 82% | See 25 → |
| 30 | $181,290 | 82% | This page |
| 35 | $231,377 | 82% | See 35 → |
| 40 | $295,303 | 83% | See 40 → |
| 45 | $376,889 | 84% | See 45 → |
Same example saver at every age - $40,000/yr spending, a 5% real return, retiring by 65. Only the starting age changes, so the rising coast number is purely the cost of having fewer years for growth to work.
Run your own coast number at 30
Open the calculator prefilled for this example, then change the spending, return, and target to match your life - and watch the fan chart of real histories redraw.
Frequently asked
How much do I need invested to Coast FIRE at 30?
For an example saver spending $40,000/yr and assuming a 5% real return to age 65, the Coast FIRE number at 30 is about $181,290. Your own number depends on your spending, target age, and return assumption - run it in the calculator.
Is 30 too late to Coast FIRE?
No, 30 is still early. Around 35 years of compounding means a relatively small invested sum can carry you to retirement, so the coast number is well below your eventual target. The catch is the same as at any age: growth alone has to survive the market sequence it draws, which is what the historical success rate here shows.