FIRE Knowledge Base
In-depth articles on Financial Independence and Early Retirement — the math, the strategies, and the risks that actually matter when you are planning a 40–50 year retirement.
In the library
51 min total reading · 4 categories
Fundamentals
Start here — the core ideas behind Financial Independence and Early Retirement.
What is FIRE? Financial Independence, Retire Early Explained
Plain-English introduction to FIRE — what Financial Independence Retire Early actually means in 2026, where the movement came from, and how it has evolved.
7 min readYour FIRE Number
Your FIRE number is the portfolio size that lets you retire early. Learn the formula, the 25× rule, why 28–30× is more realistic for long retirements, and benchmarks for 2026.
8 min readMath & strategy
Withdrawal rates, savings-rate math, and the risks you actually need to plan for.
Safe Withdrawal Rate
The safe withdrawal rate (SWR) is the share of your portfolio you can spend each year without running out. Why 4% is a baseline, why 3.25–3.5% fits a 50-year retirement, and how dynamic strategies improve outcomes.
10 min readSavings Rate
Your savings rate determines how fast you reach financial independence — far more than your income. The math, a 2026 timeline table, and how to raise yours without misery.
9 min readFIRE variants
Lean, Fat, Coast, and Barista FIRE — picking the path that fits your life.
Planning & risks
Inflation, sequence risk, and other forces that shape an early-retirement plan.
Ready to put the theory to work?
Use the free FIRE Calculator to project your personal path to financial independence.