American workers' retirement accounts reached a new milestone in the second quarter, with the average 401(k) balance climbing to $128,500, according to Fidelity Investments' quarterly retirement analysis. The figure represents a 15% increase from the previous year, buoyed by the S&P 500's 22% gain and consistent employee contributions.
But the headline number masks significant variation by age group. Fidelity's data reveals stark differences in retirement preparedness across generations:
Workers in their 20s hold an average 401(k) balance of $12,100, while those in their 30s average $43,900. The 40s cohort averages $98,200, and workers in their 50s — the critical final decade before retirement — average $186,100. Those 60 and older average $232,000, though financial planners say the target should be closer to eight to ten times your annual salary by retirement age.
"The average is misleading because a few very large accounts pull the mean upward," said Meghan Railey, a retirement strategist at Vanguard. "The median 401(k) balance for someone in their 50s is approximately $72,000. Many Americans are significantly behind where they need to be."
The data also showed that 401(k) millionaires — participants with balances exceeding $1 million — now number 399,000, up from 349,000 a year ago. The increase reflects both strong market performance and the compounding power of long-term, consistent investing. The average millionaire 401(k) holder has been contributing for 27 years.
Financial advisors recommend workers at all stages reassess their contribution rates. "The 2026 contribution limit of $23,500, with an additional $7,500 catch-up contribution for those 50 and older, provides significant tax-advantaged saving opportunity," Railey added. "If you can't max it out, aim for at least enough to capture your full employer match. That's free money you can't afford to leave on the table."
