This exploration builds directly on The Bitcoin Retirement. That page projects your plan on the upside path; think of it as Part 1. This is Part 2: it takes the same plan and drops a bear market into it. If you have not yet played with the retirement calculator, start there, this exploration is far more useful once you have.
This is sequence-of-returns risk, and it is specifically a retirement-income drawdown problem. While you are still DCA’ing into bitcoin, a crash is a discount. Once you are selling bitcoin to live, a crash means selling more sats to cover the same bill, and that is stack you never get back even if price fully recovers. For bitcoin the effect is sharper than for most assets, because its drawdowns have historically been deep and its recoveries, while historically reliable, are not guaranteed.
The exploration works for any retirement year, but it leads with the early exit, because that is where sequence risk bites most. Set a plan, pick a crash, and change the year you retire, to simulate scenarios. This is a what-if exercise, not a forecast. It assigns no odds, and it is built to show the cases where the plan fails as plainly as the cases where it survives.
One implication: you cannot fully lock a retirement date years in advance and assume the market will cooperate. As the date nears, it is worth tempering the plan, keeping enough flexibility that you are not forced to draw down heavily at a low.
Start from a retirement plan
Let’s confirm your baseline assumptions first. These are the same inputs as The Bitcoin Retirement, so the no-crash path here matches that page. New here? That page is the natural Part 1 to this Part 2.
Now drop a bear market into it
You pick the crash. The tool never predicts one. Depth and recovery draw on the historical record; timing is the variable nobody can know in advance, which is exactly the point. Drag any control below and the graph moves with it.
Same stack, same spending, same crash. Drag the year and watch the plan pass or fail on the timing alone.
Stress-test against crashes up to historically deep ones. Bitcoin’s past bear markets have run as deep as roughly 70–80% peak-to-trough, though they have tended to get shallower as the asset matures. See Bull & Bear Cycles. The depth is entirely your choice.
Which year of retirement the bear market begins. Early is brutal, late is nearly harmless.
Weak settles toward the Power Law floor and never fully returns to trend, the failed-recovery case. Historical is the default because past recoveries were reliable, but non-stationarity means the future is not guaranteed.
Cut withdrawals while the market sits below its pre-crash level, the actionable counterpart to “don’t sell into the bottom.” Under a Weak recovery the market never fully returns, so the cut runs through the horizon.
Your stack’s total value over retirement (the portfolio, not the bitcoin price), log scale, nominal dollars. The baseline is the plan with no crash; the crashed path is the same plan with your bear market. The gap between them is the sequence-of-returns cost. Faint lines are the Power Law trend and floor.
Zoomed to the crash window: these are the years you would actually have to hold through, selling into the low the whole time, not knowing when it ends.
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The same plan, retiring in different years
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This is the whole point. Hold the stack, the withdrawal, and the crash fixed, and move only when you retire. Retire early and you are selling into the crash before the stack has had years to compound, so the same plan that survives a later start can fail an earlier one. Retire later and the compounding does the cushioning.
| Retire in | Crash lands | Outcome | Final stack | Final stack vs no crash |
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Final stack in today’s dollars for each retirement year, same crash throughout. The faint bar is that year’s plan with no crash; the solid bar is with the crash. A ✕ depletes tag marks the years the stack runs to zero. The gap between the two bars is the crash’s cost; it shrinks the later you retire.
| Year | BTC price | Income drawn | BTC sold | BTC left | Stack USD |
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▼ marks years the crash has depressed the price below trend. Notice the BTC sold column rise in those years: the same income now costs more sats. That is the mechanism, sequence risk made concrete. ✂ marks years the Spending cut lever reduced the withdrawal.
Reading the result
A plan that survives a mid-severity crash in year 10 tells you little about the same plan meeting a deep crash in year 1. The exploration exists to show that spread, including the outcomes where the stack does not make it. If your plan only survives on the assumption of a fast recovery, that is worth knowing now, while you can still change the stack, the income, or the year you retire.
Two framings sit side by side here. A badly-timed crash can do real, lasting damage to a bitcoin retirement. And the same crash, met late or with room to spare, is nearly a non-event. Which one you get turns mostly on two things: when you retire and how much you withdraw relative to your stack. A larger stack helps, but it is not the deciding lever; retire early and draw hard and even a big stack can run out, while a modest withdrawal a few years later rides the same crash through. Stack size sets the sizing question, and that is where How Much Bitcoin? and the upside baseline on The Bitcoin Retirement pick up. For most readers the stack is what it is — the levers you actually hold are when you retire, what you draw, and how deeply you can cut for a while. If the stack itself is still the open question — whether bitcoin belongs in the portfolio at all, and at what size — that is the allocation question: Bitcoin Portfolio Allocation.
This version models the main lever you have against a badly-timed crash: a Spending cut, reducing withdrawals while the market sits below its pre-crash level rather than selling a fixed amount into the low. It is the actionable counterpart to the “don’t sell into the bottom” lesson from Bull & Bear. Turn it on in the stress test above and the verdict states plainly what the cut buys and what it costs in forgone income. It is a real lever, not a free one: the arithmetic is years of living on less, and whether that is livable is a question this page cannot answer.
The upside baseline this exploration stress-tests. Start here.
The evidence behind the crash depths and recovery shapes.
If timing can break the plan, sizing is the lever.
Trimming into highs and rebuying into lows, instead of selling into the bottom.