Coast FIRE Detector

Coast FIRE asks a simple question: “If I stopped investing new money today, would time alone carry me to FIRE?”

Current age

Target age for FIRE

Current invested assets

Target annual expenses at FIRE (today's money)

Expected annual return

Expected annual inflation

Safe withdrawal rate (%)

Result

This is a rough, single-scenario estimate. Real life has taxes, job changes, recessions, and curveballs. Use it as a gentle nudge, not a verdict.