While workers across every other age group quietly dialed back their retirement savings over the past year, Gen Z did the opposite. The youngest full-time employees in the U.S. workforce pushed their average 401(k) deferral rate up to 6.2% of pre-tax income, according to Vanguard’s “How America Saves” 2024 report, which tracks roughly five million retirement plan participants using year-end 2023 data. Vanguard reports deferral rates by age band rather than by named generation; the generational labels used here are this article’s interpretation of those age-band figures. Workers in the age ranges corresponding to millennials, Gen X, and baby boomers all saw their contribution rates decline during the same period. Vanguard’s 2025 edition, covering 2024 data, may have been released by mid-2026 and could update these figures.
At the same time, a separate September 2025 Harris Poll survey found that 57% of Gen Z respondents consider multiple income streams essential to their financial stability. (The link above goes to the Harris Poll homepage; Harris has not publicly released a dedicated page for this survey, nor its full methodology or sample size, so the figure is best treated as directional.) Together, the two data points outline a generation that is not just saving more aggressively but rethinking how money gets earned in the first place.
What a 6.2% deferral rate actually means
At 6.2%, the typical Gen Z worker with 401(k) access is setting aside about $6.20 of every $100 earned before taxes. That still trails the 7.4% average across all age groups in Vanguard’s data. But the direction matters more than the level: the youngest cohort’s rate climbed while every older cohort’s rate fell. Retirement researchers say that kind of clean split across age bands is unusual.
Employer plan design deserves a share of the credit. Auto-enrollment and auto-escalation features, which sign new hires into a 401(k) at a default rate and gradually increase it each year unless the employee opts out, have become standard in large plans. The SECURE 2.0 Act, signed in late 2022, went further by requiring auto-enrollment in most new 401(k) plans established after December 29, 2022, with the mandate taking effect in 2025. Because Gen Z workers are entering the labor force under these newer defaults, they benefit from structural nudges that many older workers, hired into legacy plans years ago, never received.
But defaults alone do not explain why the youngest cohort’s rate rose while others fell. Any worker can override their settings. The upward movement suggests at least some intentional saving behavior layered on top of what plan design would produce by itself.
One detail often overlooked: employer matching contributions effectively raise the total savings rate. Vanguard’s data shows the median employer match adds roughly 3% to 4% of pay, which means many Gen Z workers deferring 6.2% are actually accumulating closer to 9% or 10% of their salary each year. That narrows the gap with the 15% total savings rate (including employer contributions) that Fidelity recommends for a secure retirement.
The side-hustle factor
The Harris Poll finding adds a behavioral layer. When 57% of a generation calls earning from more than one source not just helpful but essential, it reflects something beyond a passing trend. Freelance gigs, content creation, reselling, tutoring, contract coding: the specific hustles vary, but the underlying logic is consistent. A single paycheck feels insufficient, or at least unreliable, to a cohort that watched millennials buckle under student debt and saw pandemic-era layoffs gut seemingly stable careers.
Financial planners say they are hearing this firsthand. Multiple advisors working with Gen Z clients report that the conversation has shifted from whether to start a side hustle to how to deploy the money already being earned on the side. That anecdotal pattern does not prove a universal trend, but it surfaces consistently enough to suggest the Harris Poll numbers reflect real behavior, not just aspiration.
Extra income from a side gig, even a few hundred dollars a month, can be the margin that lets a 24-year-old bump their 401(k) contribution from 4% to 6% without feeling the squeeze in their checking account. That said, no single study has yet tracked both side-hustle income and retirement deferrals within the same individuals over time. The Vanguard data and the Harris Poll come from separate research efforts with different samples and methodologies. The logic connecting them is straightforward, but the causal link remains unproven.
Why older generations pulled back
The other half of this story is the retreat by everyone else. Inflation remained elevated through much of 2023 and into 2024, squeezing household budgets in ways that hit mid-career and older workers hardest. Mortgages, childcare, healthcare premiums, and college tuition represent large fixed costs that most Gen Z workers have not yet taken on. When grocery bills and insurance premiums climb, the 401(k) contribution is often one of the first discretionary line items to get trimmed.
Rising borrowing costs compounded the pressure. With interest rates on credit cards, auto loans, and home equity lines all elevated, many households redirected cash toward debt service rather than long-term savings. For workers in their 40s and 50s carrying a mortgage refinanced at a higher rate or helping a child through college, the math may have simply demanded a temporary pullback.
Some of the decline may also reflect changes in employer matching formulas or plan restructuring, though Vanguard’s report does not isolate that variable cleanly. The gap in savings behavior across age bands is well-documented, but the precise mix of forces behind it, whether conscious budgeting decisions, plan design shifts, or inertia in the face of rising costs, remains an open question as of mid-2026.
What Gen Z workers should actually do with this information
For younger workers reading these numbers as validation, a few realities are worth sitting with. A 6.2% deferral rate is a strong start, particularly when paired with an employer match. But workers without a match, or those whose match vests over several years, may need to push their personal rate higher to stay on track for retirement.
Gen Z holds one asset no other generation currently has: time. A dollar invested at 23 has roughly four decades to compound before a traditional retirement age. Workers earning from multiple streams should think carefully about where that extra money lands. Side-hustle income deposited into a checking account and spent on lifestyle upgrades does not move the retirement needle. But routing even a portion of gig earnings into a Roth IRA, which allows investments to grow and be withdrawn tax-free in retirement, can turn short-term hustle into long-term wealth. For workers currently in lower tax brackets, a Roth is especially attractive: they pay taxes on contributions now at a low rate and avoid taxes later when their income and bracket may be higher.
How Gen Z’s dual strategy of earning more and saving more will be tested
Gen Z has not figured out personal finance. No generation has at this age. But this cohort, shaped by economic uncertainty and armed with more accessible investing information than any previous generation at the same stage, is making measurably different choices. They are saving more into employer-sponsored plans while simultaneously embracing the idea that a single income source is not enough.
Whether those choices hold up through a recession, a first home purchase, or the arrival of children will determine whether the early savings advantage translates into lasting financial security. The most useful research that does not yet exist would track side-hustle income and retirement contributions within the same group of Gen Z workers over several years, answering the question analysts are currently left to infer: does earning from multiple sources actually cause higher retirement savings, or are both behaviors simply markers of a financially engaged personality?
As of June 2026, the available data supports a cautious but compelling read. Gen Z is outpacing every other age band’s current savings trajectory, and a majority of the cohort has internalized the idea that one paycheck is not enough. Those two data points, drawn from credible but separate sources, describe a generation trying to build financial resilience from both ends: earning more and saving more at the same time. The gap between that ambition and long-term outcomes is where the real story will unfold over the next decade.
