cFIREsim

cfiresim.com · Verified Mar 17, 2026 · Online· 1h ago
Open Tool

Description

Open-source FIRE retirement portfolio simulator that runs your plan against 150+ years of historical US market data. Configure portfolio size, annual spending, asset allocation, withdrawal strategies, Social Security income, and more to see what percentage of historical scenarios your retirement survives.

No-Login Task

"Simulate retirement portfolio longevity using historical market sequences and Monte Carlo analysis, with configurable withdrawal strategies and income sources"

Tags

Finance ,Free,Web App,Client-Side Only,Cloud Only

Health History

14 days ago → Today · Uptime: 100%