The Impact of 401(k) Plans on Retirement Savings
Since their creation in 1978, 401(k) plans have reshaped how Americans build wealth for retirement. These employer-sponsored defined-contribution plans let workers defer pre-tax income, often with an employer match on top, while benefiting from the long-term power of compounding. Unlike traditional pensions, 401(k)s give workers direct control over their investments and a stake in broader market growth.
According to the Investment Company Institute, Americans held $10.0 trillion in 401(k) plans across about 730,000 plans as of September 2025, serving roughly 70 million active participants plus millions of former employees and retirees. By year-end 2025, that figure had edged up to $10.1 trillion. Those assets sit within a far larger retirement system: total US retirement assets reached $49.1 trillion at December 31, 2025, up 11.2% over the course of the year.
Access to these plans has grown steadily. Bureau of Labor Statistics data from March 2025 show that 70% of private-sector workers had access to a defined-contribution plan. Automatic enrollment has become the norm among larger employers, with 61% of Vanguard-administered plans using it at year-end 2024 and 78% of plans with at least 1,000 participants doing so. Vanguard’s 2025 edition of its annual How America Saves report found that a record 45% of participants increased their deferral rates in 2024, while aggregate account balances rose 10% during the year.
Despite risks like market volatility and annual contribution caps, the 401(k) remains the cornerstone of private-sector retirement planning in the United States.
A Redditor’s Question on Counting 401(k) Savings
A Redditor on the r/personalfinance subreddit sparked a lively discussion by asking whether 401(k) contributions should count when calculating monthly savings. The specific framing: when someone says “I save $1,000 a month” or aims to “save 15% of your income,” does that include retirement account contributions?
The poster wondered whether “savings” means all forms of wealth accumulation, including 401(k)s and IRAs, or only after-tax cash set aside for near-term needs. Many savers wrestle with exactly this question, and the answer shapes how accurately they measure progress toward financial goals.
The case for counting 401(k) contributions as savings is straightforward: those dollars are real money being set aside for the future, growing tax-deferred, and often boosted by employer matches. Excluding them can make a disciplined saver look financially underprepared on paper. The case for separating them is equally practical: 401(k) funds are illiquid, subject to penalties before age 59.5, and cannot cover an emergency, a down payment, or a career gap. That limitation became visible in PSCA survey data showing that hardship withdrawals rose to 2.7% of participants in 2024, up from 2.1% in 2023, suggesting many workers are tapping retirement accounts precisely because their liquid cushion ran dry.
The distinction matters more than it might seem. Someone who funnels 15% of income entirely into a 401(k) may be building a robust retirement nest egg while carrying almost no liquid reserve for short-term needs. Tracking both categories separately, rather than blending them into one “savings rate,” gives a clearer and more honest picture of overall financial health.
Actionable Advice for Savers
I am not a financial planner or tax professional, so these are my opinions only. That said, several practical steps can help savers address this tension and build a more complete financial picture.
- First, track retirement and liquid savings separately. Aim for a combined savings rate of 15% to 20% of income, but label each bucket clearly. A reasonable split might be 10% directed to a 401(k) and 5% to 10% into a high-yield savings account for emergencies and near-term goals.
- Second, know your 401(k) limits. In 2025, the employee contribution limit is $23,500. Workers aged 50 and older can add a catch-up contribution of $7,500, and those aged 60 to 63 qualify for a higher “super” catch-up of $11,250 under the SECURE 2.0 Act. For 2026, the base limit rises to $24,500 with an $8,000 catch-up for those 50 and older. Note also that starting in 2026, workers who earned more than $150,000 in prior-year FICA wages must make their age-based catch-up contributions as Roth (after-tax) contributions.
- Third, capture the full employer match before diverting funds elsewhere. According to the PSCA’s 68th Annual Survey covering 2024 plan-year experience, participants contributed an average of 7.7% of pay while employers added 4.8%, for a combined savings rate of 12.5%. That employer contribution is, in effect, immediate additional compensation.
- Fourth, review spending monthly. Trimming dining out or unused subscriptions can redirect $100 to $200 toward liquid reserves each month without touching 401(k) contributions.
- Finally, reassess goals at least once a year, ideally with a financial advisor or a budgeting tool such as Empower, YNAB, or Quicken Simplifi. Note that Mint, once a popular option, shut down in March 2024, so savers relying on it should migrate to a current platform.
By treating retirement and liquid savings as two distinct but equally important categories, rather than collapsing them into one number, savers can make better-informed decisions about both their long-term security and their day-to-day financial resilience.
Editor’s note: This article was updated to reflect ICI year-end 2025 data showing 401(k) assets reached $10.1 trillion, up from $10.0 trillion at Q3 2025; Vanguard’s How America Saves 2025 report finding that a record 45% of participants raised their deferral rates in 2024 and aggregate balances rose 10%; PSCA 68th Annual Survey data showing hardship withdrawals climbed to 2.7% of participants in 2024 from 2.1% in 2023; and a new 2026 SECURE 2.0 requirement that workers earning above $150,000 must make catch-up contributions as Roth contributions.
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