He invented the 4% rule of retirement income — why he calls inflation retirees' 'greatest enemy'
- Posted on September 3, 2025
- By CNBC
- 1 Views
He invented the 4% rule of retirement income — why he calls inflation retirees' 'greatest enemy'
As a financial planner in the early 90s, William Bengen sought to identify a safe retirement withdrawal rate for his clients. The 4% rule was born.
