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How to Calculate Monte Carlo Retirement

What is Monte Carlo Retirement?

Monte Carlo retirement planner simulates thousands of market scenarios to estimate success probability of retirement plan.

Step-by-Step Guide

  1. 1Input retirement needs, portfolio size, asset allocation, inflation
  2. 2Simulate 1000+ random market scenarios
  3. 3Calculate percentage where funds last

Worked Examples

Input
Portfolio $1M, 4% withdrawal, 60/40 allocation
Result
90% success rate (95% success with 3% withdrawal)
Industry standard approach

Common Mistakes to Avoid

  • Using average returns (ignores sequence risk)
  • Neglecting inflation adjustments

Frequently Asked Questions

What success rate is adequate?

Academic consensus: 90-95% for 30-year retirement.

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