how 401ks are minting moderate millionaires

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Nature

401(k) plans are creating “moderate millionaires” mostly through time, consistency, and market growth, not through exotic strategies. The story is about disciplined saving, employer matches, and strong stock returns compounding over decades.

What “moderate millionaire” means

“Moderate millionaires” are people with roughly 1 to 5 million dollars in investable assets, often with a big chunk sitting in a 401(k) or similar retirement plan. This group has grown as long bull markets and regular contributions have pushed more retirement accounts over the seven‑figure mark.

Why 401(k) balances are passing $1M

Three main forces are at work: automatic payroll deductions, employer matching, and strong equity markets over many years. As of late 2025, large providers like Fidelity report hundreds of thousands of 401(k) accounts with balances above $1 million, the highest on record since tracking began in the 2000s.

Who is becoming a 401(k) millionaire

Most people with million‑dollar 401(k)s are older workers and recent retirees, primarily late baby boomers and Gen X. They typically have decades of contributions, often stayed invested through downturns, and benefited from recent multi‑year stock market gains.

Key factors that make it work

  • Consistent contributions at a relatively high savings rate, often boosted by automatic increases over time.
  • Employer matches that effectively add “free money” on top of worker contributions each year.
  • Staying invested in diversified, stock‑heavy portfolios (often target‑date funds) through volatility instead of trying to time the market.

Why $1M feels “moderate” now

Inflation, longer retirements, and higher living costs mean that $1 million supports only a modest withdrawal (often framed around 3–4% per year), so it doesn’t feel like “rich” money in many parts of the U.S. This is why wealth firms and commentators describe these savers as “moderate millionaires” and suggest that truly affluent spending often requires several million dollars, not just one.