Guides and analysis for FIRE planners.
The 4% rule is the cornerstone of FIRE planning — but where does it come from, and does it still hold in a high-inflation environment? We break down the Trinity Study, its assumptions, and how to stress-test the rule with real CPI data.
A 3% annual inflation rate cuts your purchasing power in half over 24 years. We show the math behind inflation's silent erosion of retirement portfolios and walk through the strategies early retirees use to stay ahead of rising prices.
Your FIRE number is the portfolio size at which your investments can sustain your lifestyle indefinitely. This step-by-step guide explains the inputs that matter, the inflation adjustment most calculators skip, and how to interpret your result.