Triple tax advantage — the most powerful account nobody talks about
Age
40
Location
Columbus, OH
Income
$115k/yr
Saved
$380k + $32k HSA
A 40-year-old Columbus professional earns $115k, contributes the max to both a 401k and an HSA, and has let $32k accumulate in the HSA investment account. Pre-tax contributions, tax-free growth, and tax-free medical withdrawals make the HSA uniquely powerful. This scenario shows how it alters the retirement equation.
The earliest retirement age at which this plan does not run out of money is 49, after 9 more years of full-time work. Market risk matters more than that headline: the earliest age that succeeds in at least 80% of 500 Monte Carlo simulations is 50.
| Retire at | Full-time years left | Semi-retired years | Best Monte Carlo success |
|---|---|---|---|
| 49 | 9 | 0 | 60% |
| 50 | 10 | 0 | 80% |
| 51 | 11 | 0 | 92% |
EARLIEST 80%+ PLAN: Retire at Age 50 Switch to semi-retirement at age 50 (after 10 high-salary years). Portfolio bridges to full retirement at 50.
Growth rate (4.0%) keeps compounding during spending — the extra buffer matters most against bad early-retirement market sequences.
Social Security: $28k/yr starting at age 67 is included. Healthcare: $14k/yr before Medicare at 65. HSA: $32k balance,
Across the simulated market histories (in future dollars, not adjusted for inflation), the median portfolio is $1.13M at 70, $1.27M at 80, $1.39M at 90. In a poor sequence of returns (10th percentile) it is $0k at 70, $0k at 80, $0k at 90.
This example uses illustrative figures and should not be treated as financial advice.