How Much Should You Have in Your 401(k) at Every Age?

The most widely used retirement benchmarks say you need to save 1x your salary by 30, 3x by 40, 6x by 50, and 10x by 67. Those numbers come from Fidelity’s retirement guidelines, and they are useful shorthand built on assumptions that may not match your life. The number you are supposed to hit might be too high or too low, depending on your actual spending needs.

What the Benchmarks Actually Assume

The guidelines assume you will need to replace 70% to 80% of your pre-retirement income and that Social Security will cover a meaningful portion of that gap. For a median earner, Social Security replaces between roughly 40% and 43% of pre-retirement income in 2026. The 401(k) benchmark is designed to cover the rest. That math works if your spending in retirement tracks your pre-retirement income. For many people, it does not.

Someone with a paid-off home, no dependents, and modest travel habits may need to replace only 55% to 60% of their income. At that level, the 6x benchmark at age 50 is more than enough. Someone supporting adult children, carrying a mortgage into retirement, or planning extensive travel could need 12x or more. The benchmark does not know which one you are.

The Gap Between the Benchmark and Reality

Vanguard’s 2025 “How America Saves” report, which tracks millions of 401(k) participants, reveals a huge gap between the average and what most people actually have saved. The average account balance is $148,153, but the median is only $38,176. That big difference exists because a relatively small number of people with very large balances pull the average way up.

The median number tells the real story for people aged 45 to 54, with a median 401(k) balance of $67,796. For those aged 55 to 64, it is $95,642. A 60-year-old earning $80,000 who follows Fidelity’s benchmark should have about $640,000 saved by now. Yet the typical person in that age group has less than $100,000, meaning tens of millions of households face a retirement savings gap that cannot be fixed with small changes.

Why Averages Lie and Medians Tell the Truth

The average is skewed by high earners who max contributions every year, receive generous employer matches, and have been investing since their 20s. The median reflects the person in the middle of the distribution, a far more honest picture of where most savers stand. When you read that Americans have “record high” 401(k) balances, the headline reflects the average, not the median. Most savers are not in that top tier, pulling the average upward.

Benchmarks are calibrated against averages, not medians. If you are measuring yourself against the wrong number, you may feel ahead of schedule when you are not, or feel hopelessly behind when you are actually fine, given your specific spending needs.

The Contribution Window Most People Miss

If you are behind on the benchmarks and still working, the contribution rules start working in your favor as you get older. For 2026, the standard 401(k) contribution limit is $24,500. Workers aged 50 and older can add a catch-up contribution of $8,000, bringing the total to $32,500 per year.

SECURE 2.0 added a valuable provision that many people have not heard of. Workers who are age 60, 61, 62, or 63 in 2026 qualify for a “super catch-up” contribution of $11,250 instead of the regular $8,000. This raises the total annual limit to $35,750 for those four years. For someone who is behind on savings but still has a good income, these four years create a powerful window to make up a large part of the gap.

The Tax Cost That Arrives With Every Withdrawal

Hitting your savings benchmark is only half the battle. How you withdraw the money in retirement often determines how much you actually get to keep. Traditional 401(k) withdrawals are taxed as ordinary income, and once you cross certain thresholds, they can create unexpected costs that many retirees do not see coming until it is too late.

Medicare’s Income-Related Monthly Adjustment Amount, or IRMAA, adds a surcharge to your Part B premiums if your income is too high. In 2026, the standard Part B premium is $202.90 per month. For single filers, the first IRMAA tier kicks in at $109,000 of modified adjusted gross income and adds $81.20 per month to the premium ($95.70 if you add the $14.50 Part D surcharge). Because of the two-year lookback, a large 401(k) withdrawal you make today will raise your Medicare premiums in 2028. A married couple can easily pay hundreds of extra dollars per year in premiums because of one spouse’s withdrawal decision made two years earlier.

Above roughly $34,000 in combined income for a single filer, up to 85% of your Social Security benefits can become taxable. A retiree pulling money from a traditional 401(k) in the 22% tax bracket who also triggers Social Security taxation and IRMAA can end up with an effective tax rate on those dollars that is much higher than their stated bracket.

Three Actions Worth Taking Now

1. Recalculate your personal benchmark using your actual expected spending in retirement, not a percentage of current income. If your mortgage will be paid off and your children are financially independent, your target may be 20% to 30% lower than the standard guideline. If you have significant ongoing obligations, it may be higher.
2. If you are between 60 and 63, confirm with your plan administrator that you are capturing the full super catch-up contribution of $11,250 this year. Many participants are unaware that this provision exists, and the window is only four years wide.
3. If your combined retirement income, including Social Security and 401(k) withdrawals, will exceed $109,000 as a single filer or $218,000 as a married couple, consult a fee-only advisor about a Roth conversion strategy before you retire. The two-year IRMAA lookback means the planning window closes earlier than most people expect.