Why $500,000 in Savings Only Buys $1,667 a Month

A $500,000 retirement balance, under the standard 4% withdrawal rule, produces $20,000 in year one, or about $1,667 a month before taxes. Add the estimated average Social Security retirement benefit of $2,083 a month as of mid-2026, and combined pretax income lands near $3,750 a month, or roughly $45,000 a year.

Average annual household expenditures, according to the Bureau of Labor Statistics, came in at $78,535 in 2024, up from $77,280 in 2023 and $72,973 in 2022. Retiree households spend less than working-age households. The gap between $45,000 in gross income and a national spending baseline in the mid-$70,000s shows why the paycheck problem feels different from the savings problem.

Core PCE, the Federal Reserve's preferred inflation gauge, rose from 126.714 in August 2025 to 130.266 in June 2026, a steady climb that sits in the 90.9th percentile of the past year's readings. For a retiree, that is the mechanism by which a fixed $1,667 monthly withdrawal quietly buys less each year.

Social Security responds through its cost-of-living adjustment, which was set at 2.8% for 2026. Portfolio withdrawals do not adjust automatically. The 4% rule assumes the retiree raises the dollar amount each year to match inflation. That means $1,667 becomes $1,714 the next year, and higher the year after that. Whether the underlying $500,000 can support those rising withdrawals depends on what returns the portfolio actually earns.

The fixed-income options a retiree might use to build a paycheck all sit in a different range. The FDIC national average 12-month CD rate was 1.68% as of July 2026, which would generate roughly $700 a month on $500,000. The 10-year Treasury yield climbed to 4.75% at the end of July, producing closer to $1,979 a month if the full balance were locked in at that rate. Series I Savings Bonds carry a composite rate of 4.26% for bonds issued through October 2026, with a 0.9% fixed component and a 1.67% semi-annual inflation adjustment.