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ODOpt Blog

Retirement planning, done honestly

Clear, evidence-based writing on UK retirement planning — Monte Carlo modelling, sequence of returns risk, safe withdrawal rates, and the assumptions most calculators get wrong.

Deep Dive · New

Monte Carlo Simulation: The Maths Behind the Method

From a solitaire game at Los Alamos to the engine inside every serious retirement planner. What Monte Carlo actually does, why it is the most honest tool available, where it can mislead you — and how odoPT is designed to address its limitations.

12 min read · 11 academic references · Most thorough on this site
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P90 P50 P10 5,000 SIMULATED FUTURES · ONE PORTFOLIO
Watch · Walkthrough

Stress-testing a UK retirement plan against a 2008-style crash

Most retirement plans assume markets behave predictably — they don't. In this walkthrough I run a 2008-style crash through a real UK retirement scenario in odoPT: 5,000 simulated futures, realistic inflation paths, seven withdrawal strategies, and the fan chart that shows what survival actually looks like.