Average and median 401(k) balance by age
These figures come from Vanguard's How America Saves 2026 report (the 25th edition), which analyzes roughly 4.6 million defined-contribution participant accounts with data through December 31, 2025. Across all participants, the average balance was $167,970 and the median was $44,115.
| Age group | Average balance | Median balance |
|---|---|---|
| Under 25 | $7,259 | $2,234 |
| 25 to 34 | $50,261 | $18,732 |
| 35 to 44 | $120,742 | $46,919 |
| 45 to 54 | $214,991 | $78,730 |
| 55 to 64 | $305,006 | $107,269 |
| 65 and older | $330,186 | $103,202 |
| All participants | $167,970 | $44,115 |
Fidelity's Q1 2026 retirement analysis, drawn from 26,800 corporate plans and 25.6 million participants as of March 31, 2026, tells a consistent story: an overall average of about $141,000, with generational averages of $260,300 for baby boomers, $215,600 for Gen X, $82,600 for millennials, and $18,000 for Gen Z.
One caveat before you compare: both datasets measure single-plan balances. Money left in an old employer's plan, rolled into an IRA, or saved in a spouse's account does not show up here, so many households hold more in total than any one row suggests.
Why the median is so far below the average
The average balance ($167,970) is nearly 3.8 times the median ($44,115). That is not a rounding quirk; it is the shape of the distribution. A relatively small group of long-tenured, high-income savers hold very large balances, and every one of those accounts pulls the arithmetic mean upward. The median, the balance of the person exactly in the middle, ignores the outliers entirely.
Vanguard's own analysis notes that the $167,970 average sits at roughly the 75th percentile of all participants. In other words, about three out of four savers hold less than the "average" balance. If you compare yourself to the average and feel behind, you are measuring against the top quarter, not the middle.
So use the median as your benchmark. If your balance beats the median for your age group, you are ahead of the typical saver your age. Whether you are on track for the retirement you actually want is a different question, which is what the next section is for.
How to tell if you are actually behind
Beating the median tells you how you rank against other savers. It does not tell you whether you can retire, because the typical saver is undersaved. A better yardstick is a salary-multiple milestone, which scales with your income and your lifestyle. The most widely used set comes from Fidelity, built around retiring at 67 and maintaining your pre-retirement lifestyle:
| By age | Target saved |
|---|---|
| 30 | 1x your salary |
| 35 | 2x your salary |
| 40 | 3x your salary |
| 45 | 4x your salary |
| 50 | 6x your salary |
| 55 | 7x your salary |
| 60 | 8x your salary |
| 67 | 10x your salary |
A worked example: a 40-year-old earning $75,000 would target about $225,000 across all retirement accounts. Compare that with the $46,919 median 401(k) balance for the 35-to-44 group and the honest conclusion is that the typical saver at every age sits below the milestone. Being behind the milestone is normal; the milestones simply tell you how hard to push.
Two softeners before you panic. First, the multiples assume you keep your current lifestyle in retirement; if you plan to spend less, need less. Second, they count all retirement savings (401(k)s, IRAs, old employer plans), not just your current plan. Run your own numbers, including Social Security and your actual spending, in our retirement calculator.
What actually moves your balance
Four inputs explain almost all of the difference between a thin 401(k) and a fat one, and they are not equally within your control:
- Contribution rate. The single biggest controllable lever. Fidelity's Q1 2026 data put the total savings rate at a record 14.4% of pay (9.6% employee plus 4.8% employer). Fidelity's rule of thumb is 15% of income including the match; every 1% of a $75,000 salary is $750 a year compounding for decades.
- The employer match. A typical match adds 3% to 5% of pay on top of your own savings, an instant 50% to 100% return on the matched dollars. Not contributing enough to capture the full match is the most expensive mistake on this list.
- Starting age. Time is the multiplier. $500 a month at a 7% average return grows to about $260,463 in 20 years, $609,985 in 30, and $1,312,407 in 40. The last decade you add is worth more than the first two combined, which is why the "start now" advice never dies. See the mechanics in our compound interest calculator.
- Market returns. The input you do not control. Fidelity noted average balances dipped slightly in early 2026 on market volatility even as savings rates hit records. Over a career, staying invested through the dips matters far more than timing them.
A quieter balance-killer worth naming: cash-outs. Cashing out a small 401(k) when changing jobs triggers taxes plus a 10% penalty and, worse, deletes decades of future compounding. Roll it over instead, every time.
What to do at each life stage if you are behind
The playbook changes with the years you have left, but there is a workable move at every stage:
- In your 20s: Get to the full employer match immediately, even if money is tight; it is the highest-yield dollar you will ever save. Then automate a 1% contribution increase every year (most plans offer this) until you reach 15% including the match.
- In your 30s: Direct half of every raise to your contribution rate before lifestyle absorbs it. Consolidate old employer plans so nothing gets cashed out or forgotten. Aim to cross 1x to 2x salary saved.
- In your 40s: These are peak compounding years for new dollars. Push toward the 15% total savings rate if you are not there, avoid 401(k) loans, and check that your investments are not sitting too conservative; at 45 you likely have 20+ years of growth ahead.
- In your 50s: Catch-up contributions unlock at 50, letting you defer beyond the standard $24,500 employee limit. Kids leaving home and peak-earnings years make this the classic acceleration window; many savers double their contribution rate here.
- In your 60s: Model concrete retirement dates rather than saving blindly. Working even two extra years helps three ways at once: more contributions, more growth, and fewer retirement years to fund. Delaying Social Security past full retirement age adds roughly 8% per year of guaranteed income.
If you want a single number to orient the whole plan, find your coast point: the balance at which compounding alone, with no further contributions, reaches your retirement target. Our Coast FIRE calculator computes it for your age and target.
The 2026 contribution limit: $24,500
For 2026, the IRS lets you defer up to $24,500 of salary into a 401(k) if you are under 50, with an additional catch-up contribution allowed from age 50. Employer contributions (match and profit sharing) do not count against your employee deferral limit; they fall under a separate, much higher combined cap.
Maxing out is a stretch goal, not a baseline: $24,500 is about 31% of a $80,000 salary, and only a small minority of savers hit the cap in any year. The benchmark that matters for most people is the 15%-of-income total savings rate, employer match included. If you can max out, though, the math is compelling: pre-tax deferrals reduce this year's taxable income at your marginal rate while the full amount compounds.
To see exactly what a higher deferral does to both your paycheck and your projected balance at retirement, run your numbers through the 401(k) calculator.
The consistency payoff: what 10 to 15 steady years look like
The most encouraging numbers in Fidelity's Q1 2026 analysis belong to the people who simply kept going. Savers who contributed to the same 401(k) continuously for 15 years held an average balance of $600,700; the 10-year continuous savers averaged $450,800. Both figures dwarf the all-participant average of about $141,000.
The lesson is not that these savers picked better funds. It is that the by-age tables above mostly measure interruptions: job changes, cash-outs, paused contributions, late starts. Remove the interruptions and an ordinary income with an ordinary match compounds into an extraordinary balance.
So treat the median for your age as a starting line, not a verdict. The distance between the typical balance and the 15-year-saver balance is a decade and a half of automated, uninterrupted contributions, and that is available to almost everyone.