Coast FIRE Number at 45: How Much to Have Invested
At 45, an example saver needs about $376,889 invested to coast to retirement with no new contributions - and across real market history that plan held up about 84% 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 45 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 45 actually means
At 45, coasting asks about 20 years of growth to finish the job. The amount you need invested today is the largest on this page, and sequence-of-returns risk bites hardest here: a weak first few years leaves less time to recover before withdrawals begin. Coasting is still possible at 45; it just leaves the smallest cushion, which is why the probability, not the point estimate, is the number to watch.
The honest part most calculators skip: $376,889 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 84% of histories. A coast number isn't a guarantee, it's a probability. See how that's computed →
Run your own coast number at 45
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 45?
For an example saver spending $40,000/yr and assuming a 5% real return to age 65, the Coast FIRE number at 45 is about $376,889. Your own number depends on your spending, target age, and return assumption - run it in the calculator.
Is 45 too late to Coast FIRE?
It's later, not too late: 45 leaves roughly 20 years for growth to reach the target. You need the most invested of any age here, and the plan is most exposed to an early downturn, so the straight-line coast number is least reliable at 45. Read the success rate as the real answer, and use the calculator to test your own inputs.