When Can You Retire Early?

Business Insider recently reported on when it's an appropriate time to retire. They spoke with an early retiree too find out why they retired early, and surprisingly their decision was not directly linked to how much money they had saved up. One early retiree made his decision when he learned he would live by the 4% rule. Business Insider explained this, "[meant] he could withdraw 4% from investment accounts each year while adjusting for inflation and without running out of money."