Fidelity Investments reports that the number of 401(k) accounts holding $1 million or more has reached a record 544,000—up 28% from a year ago. While stock market gains deserve much of the credit, the habits behind these seven-figure balances are remarkably consistent, and more importantly, replicable.
They Start Early and Stay Consistent
The average 401(k) millionaire has been contributing for 26 years. There’s no shortcut past this fact: time in the market, compounding returns, and consistent contributions through bull and bear markets alike are the foundation. Most contributed an average of 17.5% of their salary annually—well above the national average of 7%.
They Maximize the Match
Every single 401(k) millionaire in Fidelity’s dataset captured the full employer match. This is, quite literally, free money, and leaving it on the table is the single most common—and most costly—retirement savings mistake Americans make. If your employer matches 50 cents on the dollar up to 6% of your salary, contributing less than 6% is like declining a guaranteed 50% return.
They Don’t Panic
Perhaps the most important habit: 401(k) millionaires overwhelmingly stayed invested during downturns. When the market dropped 25% in 2022, 95% of these top savers held their positions or increased contributions. The math is simple but emotionally brutal: those who sold at the bottom locked in losses, while those who stayed the course captured the 40%+ recovery that followed.
They Keep It Simple
The typical millionaire account holds a mix of low-cost index funds—usually a target-date fund or a simple three-fund portfolio of US stocks, international stocks, and bonds. Complex alternative investments and frequent trading are conspicuously absent. Boring works. Over decades, the difference between a 0.05% expense ratio index fund and a 1% actively managed fund compounds into hundreds of thousands of dollars.
Your Takeaway
You don’t need a six-figure salary or a finance degree to build serious wealth in a 401(k). You need time, consistency, the discipline to capture every dollar of employer matching, and the emotional fortitude to stay invested when headlines scream panic. The 401(k) millionaire club is growing—and its door is open to anyone willing to follow the playbook.
