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Bitcoin

How much Bitcoin do you need to retire?

The question and the chart follow Sminston With's retirement guide .

… BTC

Pricing this life.

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    Modelled price today, 1 January

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    Modelled price at retirement

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    USD equivalent of the Bitcoin needed, at today's modelled price

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    Years the stack is asked to fund

The plan

Set the life. The stack follows.

Every control updates the figure, the chart, and the table in this tab. Nothing is sent.

price = a × d^b

d is the number of days from 3 January 2009 UTC to 1 January of the year. Each funded year divides that year’s inflated spend by that year’s modelled price.

Comparison ages

you · age 40, drawn heavier

The chart

Bitcoin needed, if retirement waits.

Log scale. Each line stops the year that age reaches life expectancy. The drop at the end is the window closing.

Bitcoin needed by retirement year

The chart updates with the plan above.

The table

The same numbers, every five years.

Three significant figures. 0.000 is the life-expectancy year. A dash is past it.

Delay

Later asks for less.

In this model, price compounds faster than spending, so the Bitcoin needed shrinks the longer retirement is delayed.

The curve

The model moves the stack.

Switching price models alone can move the answer by 50% or more. A lower curve asks you to hold more Bitcoin for the same life.