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, 8x by 60, and 10x by 67. Those figures come from Fidelity’s retirement guidelines, and they are useful shorthand built on assumptions that may not match your life. The target you are supposed to hit might be too high or too low, depending on your actual spending needs in retirement.

What the Benchmarks Actually Assume

Fidelity’s 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 roughly 40% of pre-retirement income, according to Social Security Administration research. The 401(k) benchmark is designed to cover the rest. That math holds 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 sufficient. Someone supporting adult children, carrying a mortgage into retirement, or planning extensive travel could need 12x or more. The benchmark cannot know which profile fits you.

Fidelity’s intermediate milestone of 8x by age 60 is often overlooked, but it matters more than most workers realize. A saver who hits 6x at 50 and then coasts through their 50s will likely arrive at 60 well short of the 8x target, leaving only seven years to close a gap that compounds with every passing quarter.

The Gap Between Benchmark and Reality

Vanguard’s “How America Saves 2026” report, which covers 4.6 million 401(k) participants, reveals just how wide the distance is between the average balance and what most savers actually hold. Driven by strong market performance, the average account balance rose 13% from year-end 2024 to reach a record $167,970 by year-end 2025. The median balance climbed to $44,115, a 16% gain over the same period. That gap persists because a small number of high-balance accounts pull the average well above what a typical saver holds.

Fidelity’s own data, drawn from nearly 25 million retirement plan participants across more than 26,000 corporate defined contribution plans, shows similar stratification by generation. Baby Boomers averaged $270,800, Gen X $222,100, Millennials $82,600, and Gen Z $17,900. Those averages look more encouraging than they are: the median in each cohort is materially lower, meaning the majority of savers in every generation are behind the pace Fidelity’s own benchmarks prescribe.

That gap sharpens further when you look at matching behavior. While 88% of plans now feature an employer match, an estimated 30% of eligible workers still fail to contribute enough to capture the full matching funds. A 60-year-old earning $80,000 who follows Fidelity’s benchmark should have roughly $640,000 saved. The typical person in that age group holds far less, and the gap cannot be closed with minor adjustments.

A separate stress indicator surfaces in the Vanguard data: hardship withdrawals reached a record 6% of participants in 2025, marking the sixth consecutive annual increase and triple the pre-pandemic rate. For a growing share of the workforce, the 401(k) is functioning as a high-stakes emergency fund. That pattern further widens the savings gap for the workers who can least afford it.

Why Averages Lie and Medians Tell the Truth

The average is skewed by high earners who max out contributions every year, receive generous employer matches, and have been investing since their 20s. The median reflects the person at the exact midpoint of the distribution, a far more honest picture of where most savers stand. When you read that Americans hold “record high” 401(k) balances, that headline reflects the average. Most savers are nowhere near that top tier.

Benchmarks are calibrated against averages, not medians. Measuring yourself against the wrong figure can create false confidence when you are actually behind, or unnecessary anxiety when your real spending needs put you in a perfectly manageable position. The only number that matters is the one you will actually need to fund your own retirement.

There is one genuinely encouraging trend in the Vanguard data. Auto-enrollment reached a record 79% of large Vanguard plans in 2025, up sharply from just 34% in 2013. By defaulting workers into participation rather than requiring them to opt in, those plans build balances from the first paycheck rather than waiting for workers to take action on their own.

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 provision that most people have not heard of. Workers who turn 60, 61, 62, or 63 in 2026 qualify for a “super catch-up” contribution of $11,250 instead of the regular $8,000, raising the total annual limit to $35,750 for those four years. Importantly, plan sponsors are not required to offer this enhanced limit, and not every payroll system was updated promptly. Anyone in this age window should confirm with their plan administrator that the super catch-up is enabled before assuming the higher figure applies.

The 2026 High-Earner Roth Requirement

A significant regulatory shift under SECURE 2.0 changes how high earners must handle catch-up contributions. Any worker whose prior-year FICA wages exceeded $150,000 is now required to direct all catch-up contributions into a Roth (after-tax) account. The IRS had granted administrative transition relief through Notice 2023-62, but that relief ended December 31, 2025, making the Roth mandate fully effective for catch-up contributions made starting January 1, 2026. The result: upper-income savers lose the traditional pre-tax shelter on those dollars and must verify that their employer’s plan supports a Roth option. Plans without one cannot legally accept catch-up contributions from affected workers under this mandate.

The Tax Cost That Arrives With Every Withdrawal

Hitting your savings benchmark is only half the battle. How you withdraw money in retirement often determines how much you actually keep. Traditional 401(k) withdrawals are taxed as ordinary income, and once you cross certain thresholds, they trigger unexpected costs that many retirees never see coming until the bill arrives.

Medicare’s Income-Related Monthly Adjustment Amount (IRMAA) adds a surcharge to Part B premiums for higher-income retirees. 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 Part B premium, plus a $14.50 per month Part D surcharge, for a combined $95.70 per month above the standard cost. Crucially, IRMAA is a cliff: one dollar above a threshold triggers the full surcharge for the entire year, with no gradual phase-in. Because of the two-year lookback, a large 401(k) withdrawal made in 2026 will raise your Medicare premiums in 2028. A married couple can easily pay hundreds of extra dollars per year in premiums because of one withdrawal decision made two years earlier.

Above roughly $34,000 in combined income for a single filer, up to 85% of Social Security benefits become taxable. A retiree drawing from a traditional 401(k) in the 22% bracket who also triggers Social Security taxation and IRMAA can face an effective rate on those dollars well above their stated bracket. Most tax software does not flag this interaction clearly in advance, which is why the planning needs to happen before retirement rather than after.

The Blind Spot: Out-of-Pocket Healthcare Costs

Conventional retirement targets typically ignore the steep price of medical care, treating standard cost-of-living adjustments as a sufficient buffer for health expenses. According to Fidelity’s 2025 Retiree Health Care Cost Estimate, a 65-year-old individual retiring in 2025 can expect to spend approximately $172,500 in after-tax dollars on healthcare throughout retirement. That figure is more than 4% above the prior year’s estimate of $165,000, continuing a trajectory that has more than doubled since Fidelity first began tracking it at $80,000 in 2002. For a couple, the estimate rises to approximately $345,000, and neither figure includes long-term nursing care.

A Health Savings Account (HSA) offers a triple-tax advantage: contributions reduce current taxable income, growth is tax-deferred, and withdrawals for qualified medical expenses come out tax-free. For 2026, the IRS allows individuals to contribute up to $4,400 per year to an HSA, with the family limit set at $8,750. Adults 55 and older can add another $1,000 as a catch-up. Pairing an HSA with a workplace retirement account is one of the most effective ways to insulate a retirement portfolio from healthcare costs without drawing down the 401(k) balance directly.

Four 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 the super catch-up contribution of $11,250 is available in your plan this year. Many participants are unaware that this provision exists, and individual plans are not required to offer it.
3. If your salary crossed the $150,000 threshold last year and you are age 50 or older, verify with your retirement platform that your payroll system is correctly configured to route catch-up deductions into a Roth option. The administrative transition period ended December 31, 2025, and compliance is now required.
4. 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. Because IRMAA uses a two-year lookback, the planning window closes earlier than most people expect.

Editor’s note: This pass added context on IRMAA’s cliff-style surcharge structure (one dollar above the $109,000 single-filer threshold triggers the full Tier 1 surcharge of $81.20 per month for Part B plus $14.50 for Part D), clarified that the IRS administrative transition relief for the high-earner Roth catch-up requirement under Notice 2023-62 expired December 31, 2025 making the mandate effective January 1, 2026, and added a note that plan sponsors are not required to offer the SECURE 2.0 super catch-up and participants should confirm availability with their administrator before assuming the $35,750 limit applies.

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