4% Rule Ultimate Guide: Your Secret to Never Running Out of Money in Retirement

School taught me zip about finances, so I dove into books, blogs, and Reddit threads like a man possessed. After years of trial and error, I found the 4% rule—a dead-simple, research-backed way to withdraw money from your savings without ever running dry. It’s the backbone of financial independence (FI), and it’s how I went from naive to empowered. In this monster guide, I’m spilling everything I’ve learned about the 4% rule, updated for 2025’s wild economy