Social Security: Average benefit is ~$1,500/month at full retirement age (67 for those born 1960 or later).
401(k) Contribution Limits: $22,500/year ($30,000 if 50+) in 2023.
IRA Contribution Limits: $6,500/year ($7,500 if 50+) in 2023.
Safe Withdrawal Rate: 4% is commonly used to make savings last 30+ years.
Medicare Eligibility: Begins at age 65, with Part A (hospital) typically free if you paid Medicare taxes.