457(b) vs 403(b)
Last updated August 2026
Short answer
This is the comparison where the answer is frequently both, and the framing as a choice costs people a great deal of tax-advantaged room.
The limits are separate
401(k) and 403(b) deferrals are aggregated with each other. A 457(b) is aggregated with neither.
So a teacher with both plans can defer $24,500 into the 403(b) and $24,500 into the 457(b) in the same year.
With catch-ups at 50 or above, that exceeds $65,000 of deferral, which no private sector employee reaches without a mega backdoor arrangement.
Early access
A governmental 457(b) has no 10% additional tax on distributions after separation from service, at any age.
A 403(b) applies the usual rules, with separation at 55 or later being the practical exception.
For anyone contemplating retirement in their early fifties, that single difference decides which account should hold the bridge money.
Special catch-ups
A 403(b) may offer a 15-year service catch-up of up to $3,000 a year, capped at $15,000 lifetime, and it stacks with the age-based catch-up.
A 457(b) may offer a three-year pre-retirement catch-up allowing up to twice the annual limit, but it cannot be combined with the age-50 catch-up in the same year.
Both are plan-dependent and both are calculated from your own contribution history, so the administrator has to run the numbers.
Try it in Walnut
Walnut connects to brokerage accounts and reads what you hold, so two workplace plans and your personal accounts can be seen as one portfolio.
The governmental question
Governmental 457(b) assets are held in trust for participants and protected from the employer's creditors.
Non-governmental 457(b) assets remain the employer's property, making participants unsecured creditors if the organisation fails.
403(b) plans do not carry this risk, so at a non-governmental employer the comparison changes materially in the 403(b)'s favour.
If you can only fund one
Take any match first, wherever it is offered, since that is a return nothing else matches.
If early retirement is plausible, the 457(b) is the more useful balance to build.
Otherwise compare the actual fund menus and costs, because a 403(b) full of high-cost annuities is worse than a cheap 457(b) whatever the rules say.
What to check in each plan
The fund menu and its costs, since a 403(b) full of annuity products can be materially more expensive than the 457(b) beside it.
Whether the employer match sits inside or on top of the deferral limit, because the two plan types treat this differently.
Whether the 457(b) is governmental, which determines whether the assets are held in trust for you or remain the employer's.
Sources
The 2026 deferral and catch-up limits are from IRS Notice 2025-67. Plan rules are published by the IRS at IRC 457(b) deferred compensation plans and in Publication 571 for 403(b) plans. Walnut is informational and is not an investment adviser. This guide is educational and not personalized tax advice.
FAQ
Can I contribute to both a 457(b) and a 403(b)?
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Yes, and their limits are separate. In 2026 that is $24,500 into each, which is the largest workplace deferral opportunity available to anyone and is routinely left unused because nobody explains it.
What is the biggest difference?
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Early access. Distributions from a governmental 457(b) after separation from service carry no 10% additional tax at any age. A 403(b) follows the usual rules, with the rule of 55 as its main exception.
Which should I fund first?
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Capture any employer match first, wherever it sits. Beyond that, if you might stop working before 59.5, favour the 457(b) for its penalty-free access. Otherwise the two are close and the fund menus decide it.
Do both have catch-up contributions?
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Both offer the $8,000 age-50 catch-up in governmental plans, and $11,250 at ages 60 to 63. A 403(b) may also offer a 15-year service catch-up, and a 457(b) may offer a three-year pre-retirement catch-up. The two special catch-ups work differently.
Is a 457(b) safe?
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A governmental one holds assets in trust for participants. A non-governmental 457(b) does not: the assets remain the employer's and are exposed to its creditors. That distinction matters more than any contribution rule.
Which has better investment options?
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It varies by employer, and 403(b) menus frequently carry annuity products with higher costs and surrender charges. Comparing the actual fund lists and their expense ratios is more useful than comparing the plan types.
Can I roll one into the other?
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Governmental 457(b) balances can generally be rolled to a 403(b), 401(k) or IRA, and the reverse is also possible. Rolling out of a 457(b) forfeits the penalty-free access, so it is rarely a good idea before 59.5.
Do employer contributions work the same way?
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No. In a 403(b) the employer contribution sits on top of your deferral limit. In a 457(b) it generally counts toward the same annual limit, so a match reduces what you can defer yourself.
Which has better investments?
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It varies entirely by employer. 403(b) menus frequently carry annuity products with higher costs and surrender charges, so comparing the actual fund lists and expense ratios tells you more than comparing the plan types.
Is one plan safer than the other?
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A non-governmental 457(b) is the one to look at carefully, because its assets remain the employer's property and participants rank as unsecured creditors. Governmental 457(b) and 403(b) plans both hold assets for participants, so the risk is specific to that one variant.
Can I roll a 457(b) into a 403(b) when I retire?
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A governmental 457(b) generally can be rolled into a 403(b), 401(k) or IRA. Doing it before 59.5 gives up the penalty-free access that makes the account valuable, so the usual advice is to spend it first and consolidate later.