Yes. If you work for a state or local government, a public school, or certain other public employers and you have access to both a 401(k) or 403(b) and a governmental 457(b) plan, you can max out both in the same year, and the two limits do not share a cap. In 2026, the elective deferral limit is $24,500 for your 401(k) or 403(b) and a separate $24,500 for your governmental 457(b), so a worker with access to both can defer up to $49,000 combined before any catch-up contributions.
Why Don't the Two Limits Combine?
Because 457(b) deferrals are governed by a completely different part of the tax code than 401(k) and 403(b) deferrals. A 401(k) and a 403(b) share one combined limit under IRC Section 402(g) if you happen to have both, but a governmental 457(b) is covered by IRC Section 457 instead, which Congress wrote as its own separate limit rather than folding it into 402(g). That's not a loophole or an accident. It's a deliberate design choice meant to let public employees, who often earn less than private-sector peers in comparable roles, build retirement savings through two full-sized tax-deferred accounts instead of one.
How Much Can You Actually Defer Into Both in 2026?
Up to $49,000 combined for most people, and more once catch-up contributions apply. Here's the real breakdown for 2026, under IRS Notice 2025-67:
- Under age 50: $24,500 into the 401(k)/403(b) plus $24,500 into the governmental 457(b), for $49,000 combined.
- Age 50 to 59, or 64+: each plan gets its own $8,000 catch-up, for $32,500 per plan and $65,000 combined.
- Age 60 to 63: SECURE 2.0's enhanced catch-up applies to both plans, raising each one's catch-up to $11,250 instead of $8,000, for $35,750 per plan and $71,500 combined.
Put a real number on it: a 52-year-old city employee earning $95,000 a year who maxes out both a 403(b) and a governmental 457(b), including the age-50 catch-up on each, would defer $65,000 total, more than two-thirds of their gross salary, into tax-deferred retirement accounts in a single year. Very few people can actually set aside that much, but the ceiling is real, and it's roughly double what a private-sector worker with just a 401(k) can put away.
Does This Work With Every 457(b) Plan?
No. The separate-limit treatment, along with the age-50 and age-60-to-63 catch-ups, only applies to governmental 457(b) plans, the kind offered by states, cities, counties, school districts, and other public employers. Some nonprofits and other tax-exempt organizations offer a different version, often called a "top hat" 457(b), to a select group of highly compensated employees, and that version carries real risk a governmental plan doesn't have. A top hat plan's assets legally remain the employer's property until they're actually paid out, which means they're exposed to that employer's creditors if the organization ever goes bankrupt. Top hat balances also generally can't be rolled into an IRA or a new employer's 401(k); they can only be paid out on the schedule the plan sets, or in some cases transferred to another employer's top hat plan. A governmental 457(b) carries none of that counterparty risk, since its assets are held in trust for you, not on the employer's balance sheet.
What's the Other Real Advantage a Governmental 457(b) Has That a 401(k) Doesn't?
No 10% early withdrawal penalty once you've separated from the employer, regardless of your age. A 401(k) or 403(b) generally hits you with that penalty on any withdrawal before age 59½ unless you qualify for a specific exception, like the Rule of 55. A governmental 457(b) skips that penalty entirely after you leave the job, even at age 45 or 50, though you'll still owe ordinary income tax on whatever you withdraw. That's a genuinely different feature, not just a marketing point, and it's the main reason some public employees who plan to retire early prioritize funding the 457(b) over the 401(k)/403(b) beyond the employer match.
So Which Account Should You Actually Fund First?
- Any employer match on your 401(k) or 403(b), first, always. A 457(b) almost never comes with a match, so leaving match money on the table to fund the 457(b) instead is a straightforward loss.
- If you might retire or leave the job before 59½, the governmental 457(b)'s penalty-free access makes it genuinely more flexible than the 401(k)/403(b) for that specific situation.
- If you're not going near your retirement money early, the choice between the two mostly comes down to investment options and fees, since the tax treatment on the way in is otherwise identical.
- If you can't max out both, funding each partially before maxing either one out single-handedly diversifies which account you'd actually pull from first in a pinch, since the 457(b) is the one without the early-withdrawal penalty.
One honest caveat: if the real reason you're leaning on the 457(b)'s penalty-free access is that you don't have a real emergency fund outside your retirement accounts, that's worth fixing separately rather than treating a 457(b) as a substitute for one. Our emergency fund calculator can help you size the actual cash cushion you need, so your retirement accounts stay retirement accounts.
If maximizing tax-advantaged retirement space is the goal, this pairs naturally with two other strategies on this site: our breakdown of the mega backdoor Roth 401(k) covers a similar "two separate limits" trick available to some private-sector workers, and if your 401(k) or 403(b) comes with an employer match, our explainer on 401(k) match vesting schedules is worth reading before you decide how hard to lean on that account specifically.
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Spicy Investing