Digital asset savings projection
See what a starting amount plus regular buying could add up to, under growth rates you choose, next to the same money kept as cash while inflation eats into it. Press play to watch the years unfold, drop a crash into any year, and set a goal of your own. Digital assets are high-growth, high-risk: they can rise a long way or fall a long way. This doesn't tell you how much to put in; that depends on your whole situation.
After 10 years you would have put in $57,000
In today's money, at 3% inflation
- Bad decade (−10% a year)$25,168
- Flat (0% a year)$42,413
- Strong (+10% a year)$74,469
- Kept as cash: what it would buy$42,413
Cash under the mattress
Cash feels safe because the number never falls. But at 3% inflation, the $57,000 you'd put in would buy about $42,413 of today's goods after 10 years, 26% less than the same dollars buy now. At that rate, prices double about every 23 years. That slow loss is the cost of holding cash. A high-growth, high-risk asset might outpace it by a long way, or fall far below it.
Time and compounding: Strong, year 10
Put in: $42,413. Growth: $32,056. Compounding means growth earns growth, so it does most of its work late. It works the same way in reverse when returns are negative.
Stress test
High-growth assets are high-risk: falls of 50% to 75% or more have happened, and can happen again. See what one would do to this path.
If I started with $5,000, added $200 fortnightly for 10 years, and the asset did a steady +10% a year, I'd have put in $57,000 and it would be worth about $100,081 ($74,469 in today's money at 3% inflation). The same money kept as cash would buy about $42,413 in today's money. A 75% fall at the end would leave $25,020. These are my assumptions, not a forecast.
| Scenario | Value at the end | In today's money | If it then fell 75% |
|---|---|---|---|
| Bad decade (−10%) | $33,824 | $25,168 | $8,456 |
| Flat (0%) | $57,000 | $42,413 | $14,250 |
| Strong (+10%) | $100,081 | $74,469 | $25,020 |
| Kept as cash | $57,000 | $42,413 | – |
Digital assets can fall sharply: Bitcoin has fallen by more than 75% from a peak more than once, and many smaller assets have lost almost all their value. Past performance is not a reliable indicator of future performance. Values are before tax and fees, and assume the growth rate stays the same every year, which real prices never do.