Each paycheck contribution to a 401(k) can generate a federal tax break tied to the marginal tax rate.
That means a worker earning $200,000 can receive more than twice the tax benefit per dollar saved than someone earning $50,000, because the higher earner faces a higher marginal tax rate.
That lopsided structure has defined the 401(k) system since its creation, and recent federal data reveals just how wide the gap has become.
Federal retirement subsidies overwhelmingly favor six-figure earners
Federal tax expenditures tied to retirement accounts exceeded $2 trillion over the period from 2022 through 2026, the Tax Policy Center estimated.
The Joint Committee on Taxation estimates the five-year cost of the net exclusion for defined-contribution and defined-benefit plan contributions and earnings at roughly $2 trillion.
The estimate covers fiscal years 2025 through 2029, making it the largest single item in the federal tax expenditure budget.
80% of those retirement savings tax subsidies flow to households earning more than $100,000, the Tax Policy Center estimated in 2017.
The tax deferral offers little or no benefit to low-income households because many owe no federal income tax.
More granular data from the Bipartisan Policy Center shows the same tilt by quintile. In 2019, the highest-earning 20% of American workers captured 58% of all federal retirement tax incentives, worth roughly $160 billion.
The lowest-earning 20% received 1%, and more than 80% of that group received no retirement tax benefit at all.
Two additional factors reinforce the disparity beyond the marginal-rate mechanic, the Bipartisan Policy Center noted.
Lower earners have less disposable income to defer, and the pretax deferral structure delivers no benefit to workers whose income falls below the federal tax threshold.
Hardship withdrawals hit a record high as workers raid their savings
A record 6% of Vanguard 401(k) participants made at least one hardship withdrawal during 2025, up from 5% in 2024, according to the firm’s How America Saves 2026 report, which tracks nearly five million workers.
The withdrawal rate had tripled since pre-pandemic levels, and the rise to 6% marked the sixth consecutive annual increase in emergency distributions from retirement accounts.
The need for cash for mortgage payments or rent accounted for more than one-third of those withdrawals, with medical expenses the second most common reason.
More Retirement:
Retirement Tech in 2026: AI, Operational Efficiency, and Better Participant Experience
George Kamel, Rachel Cruze warn about a mortgage retirement trap
Massachusetts retirement taxes explained: What retirees should know before moving or staying
Workers earning under $100,000 were 3.5 times more likely to take a hardship withdrawal than those above that threshold, the data showed. The median withdrawal was $1,900, a figure that signals a shortfall in emergency savings.
A decade ago, Economic Policy Institute economist Monique Morrissey warned that the shift to 401(k)s had turned the retirement system into one that magnifies inequality rather than reducing it. Vanguard’s 2026 data shows the trajectory hasn’t reversed.
A record share of workers are tapping retirement savings for emergencies, exposing growing financial strain and weakening long-term retirement security.Jacob Wackerhausen / Getty Images
Nearly half of Americans have no retirement savings at all
The Federal Reserve’s Survey of Consumer Finances shows roughly 46% of Americans have no retirement savings.
Richard Reed, Vice President and DC Practice Director at Segal, told SHRM that closing the shortfall requires earlier saving and stronger financial literacy.
We have got to get employees to start early with savings and prioritizing their retirement. And we need to focus on financial literacy, if people aren’t understanding what they need to do regarding finances, they won’t do it.
Nearly half of private-sector workers still have no employer-sponsored plan, the Bipartisan Policy Center confirmed.
Among workers earning between $18,000 and $31,000 annually, the coverage gap rises to 64%, and among those earning under $18,000, it climbs to 80%.
The personal savings rate fell to 3.9% in the first quarter of 2026, according to the Federal Reserve Bank of St. Louis, suggesting that household budget pressures will continue to widen the retirement gap.
The 401(k) contribution ceiling stays out of reach for most workers
The Internal Revenue Service raised the annual 401(k) contribution limit to $24,500 for 2026, a $1,000 increase from the year before.
Workers aged 50 and older can add up to $8,000 in catch-up contributions, bringing the theoretical maximum to $32,500 for that group.
Under a provision of the 2022 SECURE 2.0 Act, workers aged 60 to 63 can contribute a higher $11,250 catch-up in 2026, lifting their maximum to $35,750, the IRS stated.
Only 14% of Vanguard’s defined contribution plan participants contributed the statutory maximum in the prior year.
Those who did tended to have higher incomes, longer tenure with their employer, and substantially larger existing balances, the Vanguard report confirmed.
What the 401(k) subsidy gap means for workers weighing contributions
Two features of the retirement system carry different weight for sub-median earners than those who can afford to make maximum contributions to their 401(k) plan.
The employer match accrues for every employee, regardless of the tax brackets that concentrate 401(k) benefits at the top.
A Roth IRA operates on a different mechanism entirely: the after-tax contributions can be withdrawn without penalty. The 2026 Roth contribution limit is $7,500, or $8,600 at age 50 and older.
The 6% hardship-withdrawal rate, concentrated among people earning less than $100,000, suggests that the gap between statutory ceilings and what workers can afford is driving early withdrawals.
Related: Tax-loss harvesting delivers surprise tax breaks