Quick answer: A $500,000 retirement portfolio generates approximately $20,000 per year ($1,667/month) using the 4% withdrawal rule. At a 5% average annual return, it lasts roughly 23–25 years — sufficient for most retirees who also receive Social Security income.
At a 4% annual withdrawal rate ($20,000/year), a $500,000 portfolio at 5% annual return lasts approximately 24 years. At a 3% rate ($15,000/year), it can last 35+ years. At a 5% rate ($25,000/year), it lasts roughly 17–18 years.
Using the 4% withdrawal rule, $500,000 generates approximately $1,667 per month ($20,000/year). Combined with the average Social Security benefit of $1,700/month, total retirement income could reach $3,300–$3,400/month — adequate for many retirees outside high cost-of-living areas.
$500,000 can be sufficient for retirement when combined with Social Security income, especially for retirees in lower cost-of-living states. The 4% withdrawal rule gives $20,000/year from the portfolio. Add $20,000–$30,000/year from Social Security and total income reaches $40,000–$50,000/year — comfortable in many parts of the country.
Sequence of returns risk is the danger that a market downturn early in retirement — when you're actively withdrawing — can permanently reduce your portfolio. For a $500K portfolio, a 30% market drop in year 1 followed by continued withdrawals could reduce the portfolio to a level it never fully recovers from. This risk is why many advisors recommend keeping 1–2 years of expenses in cash or stable assets at retirement.
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