$40,000 annual withdrawals from a $1 million portfolio erode faster than expected due to inflation, taxes, and healthcare costs.
The widely cited 4% rule suggests a $1 million portfolio can sustain $40,000 in annual withdrawals over 30 years. However, inflation, a 22% tax bite on IRA withdrawals, and rising healthcare costs significantly reduce its real purchasing power before year 20.
Historical models assume steady market returns, but back-to-back declines while withdrawing $60,000 annually can halve a $1 million portfolio in two years. Adjusting withdrawal rates to 3.5% and delaying Social Security benefits to age 70 may improve longevity.
The gap between nominal portfolio value and actual spending power in retirement is often underestimated by retirees.