Start at 28, Retire at 40(All-in Bitcoin DCA)
12 years of accumulation. All savings into Bitcoin.
Accumulation
12 years
age 28 → 40
Portfolio at Retirement
$1.7M
Power Law model
Monthly Budget
$7,129
at retirement
Sustainable?
Yes
through age 85
Strategy Comparison
| Strategy | Portfolio at 40 | Sustainable? |
|---|---|---|
| Default (diversified) | $984K | Yes |
| Aggressive (100% BTC DCA) | $1.7M | Yes |
| Traditional 60/40 | $371K | No |
What If You Shifted Retirement?
| Retire at | Years | Portfolio | Sustainable? |
|---|---|---|---|
| 35 | 7 | $447K | No |
| 40 ★ | 12 | $1.7M | Yes |
| 45 | 17 | $4.5M | Yes |
Portfolio Growth Projection
Portfolio Comparison
Model Comparison
| Model | Portfolio at Retirement | Monthly Budget (inflation-adj.) | Sustainable? | Depletion Age | Max Expenses |
|---|---|---|---|---|---|
| Power Law | $1.7M | $7K | Yes | — | $125K/yr |
| CAGR 20% | $1.0M | $7K | Yes | — | $94K/yr |
| Traditional 60/40 | $371K | $7K | No | 44 | $11K/yr |
Decade Summary
| Age | Year | Stocks | Bonds | BTC | Other | Total | BTC Amount | BTC Price |
|---|---|---|---|---|---|---|---|---|
| 28 | 2026 | $0 | $0 | $10K | $0 | $10K | 0.140237 BTC | $135K |
| 38 | 2036 | $0 | $0 | $1.2M | $0 | $1.2M | 0.693879 BTC | $1.7M |
| 40★ | 2038 | $0 | $0 | $1.7M | $0 | $1.7M | 0.669713 BTC | $2.5M |
| 48 | 2046 | $0 | $0 | $4.9M | $0 | $4.9M | 0.496613 BTC | $9.8M |
| 58 | 2056 | $0 | $0 | $15.6M | $0 | $15.6M | 0.421615 BTC | $37.0M |
| 68 | 2066 | $0 | $0 | $42.3M | $0 | $42.3M | 0.391169 BTC | $108.1M |
| 78 | 2076 | $0 | $0 | $100.0M | $0 | $100.0M | 0.375856 BTC | $266.1M |
| 85 | 2083 | $0 | $0 | $171.0M | $0 | $171.0M | 0.369178 BTC | $463.1M |
12 Years: From 28 to Retired at 40
The difference between retiring at 40 and 45isn't just 5 more years of work — it's 5 fewer years of portfolio growth AND 5 more years of withdrawals. That double impact makes each year of earlier retirement exponentially more expensive.
With 12 years of accumulation starting at 28, the Power Law model projects a portfolio of $1.7M by age 40. This comfortably sustains $60K/year expenses through age 85.
The aggressive all-in Bitcoin strategy concentrates all savings into BTC. This maximizes upside under optimistic models but carries significant concentration risk. Compare with the diversified default scenario to see the trade-off.
This is not financial advice. Past performance does not guarantee future results.
Frequently Asked Questions
With 12 years of accumulation, the Power Law model projects a portfolio of $1.7M by age 40. This is sustainable through age 85 with $60K/year expenses. Bitcoin Gate compares both default and aggressive strategies.
Starting at 28 with a diversified portfolio, the Power Law model projects $984K. The all-in Bitcoin DCA strategy projects $1.7M. A traditional 60/40 portfolio reaches only $371K.
The aggressive 100% Bitcoin DCA strategy projects $1.7M versus $984K for the diversified approach — a significant upside. However, concentration in a single asset carries more risk. Your risk tolerance should guide this decision.
Delaying to age 45 gives you 17 years of accumulation, growing your portfolio to $4.5M — and making the plan sustainable. Each additional year of accumulation compounds significantly with Bitcoin in the mix.
Explore related scenarios
You might also like
New to Bitcoin? Start here.
Our free 10-module course covers everything from the basics to self-custody — no jargon, no shilling.
Want to customize these numbers?
Use the full Bitcoin FIRE Calculator to adjust your age, savings, expenses, and growth models. Plus explore our free 10-module Bitcoin course.