Can You Retire at 42 with $500k?

A complete retirement readiness assessment at age 42 with a $500,000 portfolio. See your 4% rule income, healthcare bridge costs, and Monte Carlo success probabilities.

Retiring at 42 with $500,000 means you'll need to fund 23 years of healthcare before Medicare kicks in at 65 — an estimated $220,800 bridge cost that could represent 44% of your portfolio. The 4% rule provides $1,667/month, but with a 91% 30-year success rate, you have a strong chance of your portfolio lasting. Early retirement requires careful healthcare planning and spending discipline — every additional year you delay substantially reduces the bridge cost and improves your success probability.

4% Rule Monthly Income

$1,667

$20,000/year

Years to Medicare (65)

23 yrs

~$220,800 bridge cost

30-Year Success Rate

91%

Median ending: $841k

40-Year Success Rate

83%

Worst case: $0

Portfolio Value Over Time at Different Withdrawal Rates

Safe Withdrawal Rate Analysis

Withdrawal Strategy	Monthly Income	Annual Income	30-Yr Success	40-Yr Success
Conservative (3%)	$1,250	$15,000	98%	94%
Standard (4%)	$1,667	$20,000	91%	84%
Aggressive (5%)	$2,083	$25,000	76%	65%

Monte Carlo Simulation Results

Healthcare Bridge: Age 42 to Medicare at 65

Bridge period

23 years

Est. annual premium

$9,600

Total bridge cost

$220,800

Calculation Assumptions

6% mean annual return with 13% volatility assumption.
3% annual inflation rate.
Monte Carlo simulation uses 6% return and 13% standard deviation (2000 simulations).
Healthcare bridge costs based on estimated ACA marketplace premiums; actual costs vary by state, age, and plan.
Retirement success defined as portfolio balance > $0 at end of horizon.
The 4% rule and safe withdrawal rates are guidelines, not guarantees. Past performance does not predict future results.

Sources

Static math ignores market sequence risk and state taxes.

Use Alistair to model dynamic withdrawal scenarios with your real portfolio, tax state, and spending needs.

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