457(b) and 401(k) combined limits stack rather than overlap in 2026: each plan carries its own $24,500 ceiling, so the real planning question is which catch-up applies in which plan.
In 2026, a governmental 457(b) has its own $24,500 deferral limit that is not combined with a 401(k) or 403(b), so a worker in both can defer $49,000. Each plan adds its own catch-up: $65,000 in total at age 50 or older, $71,500 at ages 60 to 63, and up to $84,750 in the 457(b)’s special catch-up years.
By Craig Wear, CFP® | Last reviewed: October 9, 2026
Key Takeaways
- The 2026 elective deferral limit is $24,500 for 401(k), 403(b), governmental 457 plans, and the Thrift Savings Plan, up from $23,500 in 2025 (IRS Notice 2025-67).
- The IRS states that a 457(b) carries a separate deferral limit that is not combined with deferrals to a 401(k), 403(b), or other plans, so the two $24,500 limits add to $49,000 (IRS, deferrals in more than one plan).
- Each plan allows its own catch-up: $8,000 at age 50 or older and $11,250 at ages 60 to 63 in 2026, for combined totals of $65,000 and $71,500 with a governmental 457(b) (IRS Notice 2025-67).
- In one or more of the last three taxable years before normal retirement age, a 457(b) may allow up to twice the limit ($49,000 for 2026), but only up to the participant’s unused room from prior eligible years (Treas. Reg. 1.457-4(c)(3)).
- Non-governmental 457(b) plans do not allow the age-50 catch-up, and their assets remain the employer’s property, available to its general creditors (IRS non-governmental 457(b) guidance).
- The $72,000 section 415(c) annual additions limit ($80,000 with catch-ups, $83,250 at ages 60 to 63) applies to the 401(k) side only (IRS 401(k) contribution limits).
- Beginning in 2026, catch-ups for participants whose prior-year FICA wages from the plan sponsor exceeded $150,000 must be Roth in plans offering Roth (IRS catch-up contributions).
457(b) and 401(k) Combined Limits: 2026 Key Numbers
2026 figures for a governmental 457(b). The $84,750 case requires a plan that offers the special catch-up, a year within the last three before the plan’s normal retirement age, and enough unused deferral room from prior eligible years.
This guide covers every 2026 combination of a 457(b) with a 401(k) or 403(b). For eligibility, withdrawal, and penalty differences between the plans, see 457(b) vs 401(k): how they compare.
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What is the combined 457(b) and 401(k) limit at each age in 2026?
The combined 2026 limit for a 401(k) plus a governmental 457(b) is $49,000 under age 50, $65,000 at ages 50 to 59 or 64 and older, and $71,500 at ages 60 to 63. Those totals come from applying the $24,500 base limit and the matching catch-up separately in each plan (IRS Notice 2025-67).
Catch-up eligibility follows the calendar year: reaching 50 at any point in 2026 qualifies for $8,000, and being 60, 61, 62, or 63 at year-end qualifies for $11,250 instead (IRS catch-up contributions). The full schedule of other 2026 limits is in the 2026 retirement contribution limits guide.
| 2026 plan combination (employee deferrals) | Under 50 | Age 50 to 59 or 64+ | Age 60 to 63 |
|---|---|---|---|
| 401(k) only | $24,500 | $32,500 | $35,750 |
| 401(k) plus 403(b) (one shared limit) | $24,500 | $32,500 | $35,750 |
| 401(k) or 403(b) plus governmental 457(b) | $49,000 | $65,000 | $71,500 |
| 401(k) or 403(b) plus non-governmental 457(b) | $49,000 | $57,000 | $60,250 |
| 401(k) or 403(b) plus governmental 457(b) in a special catch-up year | $73,500 | $81,500 | $84,750 |
The last row assumes the participant is within the last three taxable years before the 457(b) plan’s normal retirement age and has at least $24,500 of unused room from earlier eligible years. Each 457(b) figure is also capped at 100% of the participant’s includible compensation (26 U.S.C. 457(b)(2)).
Why does a 457(b) get its own limit?
A 457(b) gets its own limit because its ceiling comes from a different section of the tax code than the 401(k) limit. Elective deferrals to 401(k), 403(b), SIMPLE, and SARSEP plans are counted together against one individual limit under section 402(g), while 457(b) deferrals are measured only against the section 457(b)(2) ceiling (IRS, deferrals in more than one plan).
Both ceilings equal $24,500 for 2026, but the IRS indexes them as separate items: the 402(g) limit and the section 457(e)(15) limit (IRS Notice 2025-67).
The separation works in one direction only. Several other combinations that look like two plans actually share a single limit:
- Two 457(b) plans share one ceiling. Section 457(c) applies one deferral maximum per individual across all eligible 457(b) plans (26 U.S.C. 457(c)).
- A 401(k) and a 403(b) share one ceiling. Deferrals to both count against the same $24,500, even with unrelated employers. The mechanics, and the double-deferral trap, are covered in the guide to having two 401(k) accounts.
- Vested employer money in a 457(b) uses the 457(b) limit. Employer contributions count toward the 457(b) ceiling alongside salary deferrals (Treas. Reg. 1.457-4(c)(1)). In a 401(k), by contrast, employer contributions do not reduce your $24,500 deferral limit.
How does the special three-year 457(b) catch-up change the math?
The special 457(b) catch-up can raise the 457(b) side to as much as $49,000 for 2026, twice the normal limit, but only in the participant’s last three taxable years before the plan’s normal retirement age (26 U.S.C. 457(b)(3)). Paired with a maxed 401(k), that produces the highest combined deferral figures in the table above.
The doubling is a ceiling, not an automatic amount: it is limited to the lesser of twice the annual dollar limit or the current-year limit plus the “underutilized” amount from prior years. A prior year counts only if it began after December 31, 1978 and the participant was eligible to participate in the plan that year (Treas. Reg. 1.457-4(c)(3)). A worker who maxed out the 457(b) every eligible year has little or no unused room to recapture.
The same regulation sets normal retirement age no earlier than the earlier of 65 or the age of unreduced benefits under the employer’s basic defined benefit plan, and no later than 70 1/2. With a plan normal retirement age of 65, the eligible years are those in which the participant turns 62, 63, and 64.
The special catch-up does not stack with the age-50 catch-up in a governmental plan. For each year, the plan applies whichever is higher: the regular limit plus the age-50 (or age 60 to 63) catch-up, or the special catch-up amount (IRS). At age 62 in 2026 that comparison is $35,750 versus up to $49,000, so a participant with enough unused room would use the special catch-up. The broader catch-up rules are explained in the 2026 catch-up contributions guide.
Does a non-governmental 457(b) combine the same way?
A non-governmental 457(b) also has a limit separate from a 401(k) or 403(b), but it does not allow the age-50 catch-up, so the combined totals are lower after age 50 (IRS non-governmental 457(b) guidance). The special three-year catch-up is available in both governmental and non-governmental plans.
That is why the non-governmental row in the table reads $57,000 at age 50 to 59 ($32,500 in the 401(k) or 403(b) plus $24,500 in the 457(b)) and $60,250 at ages 60 to 63. Non-governmental plans are offered by tax-exempt organizations and must be limited to a select group of management or highly compensated employees, and their assets remain the property of the employer, available to its general creditors in litigation or bankruptcy (IRS).
That creditor exposure, along with payout timing (see Roth conversions and deferred compensation payouts), often matters as much as the extra deferral room.
Does a 403(b) plus a 457(b) work the same as a 401(k) plus a 457(b)?
Yes. A 403(b) shares the 402(g) limit with any 401(k), while a 457(b) stands apart, so a 403(b) plus a governmental 457(b) produces the same $49,000, $65,000, and $71,500 totals for 2026 (IRS 403(b) contribution limits). This pairing is common for public school and public university employees.
A 403(b) can add one more layer. Employees with at least 15 years of service at a qualifying organization (such as a public school system, hospital, or church) may be able to defer up to an extra $3,000 a year, subject to a $15,000 lifetime cap and other limits. Deferrals above $24,500 are treated first as this 15-year catch-up and then as the age-50 catch-up (IRS). For how a 403(b) differs from a 401(k) more generally, see 403(b) vs 401(k). Hospital staff stacking these plans can see retirement planning for nurses.
On paper, a 60 to 63-year-old with full 15-year eligibility in a 403(b) ($38,750) and a governmental 457(b) special catch-up year ($49,000) could reach $87,750 of employee deferrals in 2026. Few participants meet every condition at once, and the cash-flow cost of deferring at that level is substantial.
Does the $72,000 415(c) limit include 457(b) contributions?
No. The section 415(c) annual additions limit, $72,000 for 2026 or 100% of compensation if less, covers employee and employer contributions to a 401(k) or other defined contribution plan, and catch-ups sit above it: $80,000 with the age-50 catch-up, or $83,250 at ages 60 to 63 (IRS 401(k) contribution limits).
Section 415 applies to qualified plans, 403(b) annuities, and simplified employee pensions; 457(b) plans are not among the plans it lists (26 U.S.C. 415(a)). A 457(b) instead has a single all-in ceiling under section 457(b)(2) that already counts employer contributions. So the employer side of a 401(k) can grow toward its 415(c) maximum while the 457(b) runs on its own track.
The theoretical ceiling at ages 60 to 63 in 2026 is therefore $83,250 of total 401(k) additions plus up to $49,000 in a 457(b) special catch-up year, or $132,250. It describes the outer edge of the rules, not a typical outcome.
A worked 2026 example: one public employee, two plans
Consider a hypothetical 62-year-old school district employee with a 403(b) and a governmental 457(b), a 2026 salary of $130,000, and 2025 FICA wages from the district of $126,000. The 457(b) plan’s normal retirement age is 65, and she deferred little to it in earlier eligible years.
- 403(b) side. The $24,500 base limit plus the $11,250 catch-up for ages 60 to 63 allows $35,750 (IRS Notice 2025-67).
- 457(b) side, regular route. The same arithmetic gives $35,750 in the 457(b), for a combined $71,500.
- 457(b) side, special catch-up route. Because 2026 is the year she turns 62, it is within the last three taxable years before age 65. Her ceiling is the lesser of $49,000 or $24,500 plus her unused prior-year room. With at least $24,500 unused, the ceiling is $49,000.
- Apply the higher figure. The plan uses the greater of $35,750 or $49,000, so her 457(b) ceiling is $49,000 and her combined ceiling is $84,750, comfortably under 100% of her includible compensation.
- Check the Roth catch-up rule. Her 2025 FICA wages were under $150,000, so her catch-up dollars may stay pre-tax. Had they exceeded $150,000, her 403(b) catch-up would need to be Roth (if the plan offers Roth), while the IRS states the special 457(b) catch-up may still be made pre-tax (IRS 457(b) plans).
The example is illustrative only. Deferring $84,750 of a $130,000 salary leaves a thin paycheck, so cash flow often sets the practical limit.
How do the Roth catch-up rule and combined limits interact?
The Roth catch-up rule applies plan by plan to 401(k), 403(b), and governmental 457(b) catch-ups, using prior-year FICA wages from the sponsor of that plan. Beginning in 2026, a participant whose prior-year wages with the plan sponsor exceeded $150,000 must make catch-up contributions as Roth in a plan with a Roth feature (IRS catch-up contributions; IRS Notice 2025-67).
With one employer, one wage figure drives both plans. With a private-sector 401(k) and a 457(b) from a separate public employer, each sponsor looks at its own wages, so the rule can apply in one plan and not the other. The base $24,500 in each plan remains pre-tax or Roth by election.
How do larger combined deferrals fit a Roth conversion plan?
Larger combined deferrals change how much pre-tax money exists at retirement, which is what Roth conversion planning works on. Balances built at $65,000 or more a year eventually face required minimum distributions at age 73 (born 1951 to 1959) or 75 (born 1960 or later).
Some households pair heavy pre-tax deferral in high-bracket working years with conversions after leaving work and before Social Security or RMDs begin, when taxable income can be lower. That window is the subject of Roth conversions in a low-income year. Where a 401(k), 403(b), or governmental 457(b) plan permits it, an in-plan Roth conversion is another route. A financial professional can model whether pre-tax, Roth, or a mix fits a given bracket path; the 2026 24% bracket tops out at $201,775 (single) and $403,550 (married filing jointly).
Deferrals that exceed the limits create their own cleanup work. The correction steps for the 401(k) side are covered in the 401(k) over-contribution guide.
Frequently asked questions
Can I max out a 457(b) and a 401(k) in the same year?
Yes, if you are eligible for both. A governmental 457(b) has its own deferral limit that is not combined with 401(k) or 403(b) deferrals, so for 2026 you may defer up to $24,500 in each plan, or $49,000 in total, before catch-up contributions (IRS Notice 2025-67).
What is the combined 457(b) and 401(k) limit at age 50 in 2026?
With a governmental 457(b), the combined limit at age 50 to 59 (or 64 and older) is $65,000: $32,500 in the 401(k) and $32,500 in the 457(b), because each plan allows its own $8,000 age-50 catch-up. At ages 60 to 63 the total rises to $71,500.
Can I use the age-50 catch-up and the special 457(b) catch-up in the same year?
No. In a governmental 457(b), the special three-year catch-up and the age-50 catch-up are not added together. For each year, the plan applies whichever produces the higher limit, so the 457(b) side tops out at $49,000 for 2026 even for a participant who is 50 or older.
Do two 457(b) plans each get a separate $24,500 limit?
No. Section 457(c) applies one deferral ceiling per individual across all eligible 457(b) plans. A worker in two 457(b) plans in 2026 shares a single $24,500 base limit between them, just as 401(k) and 403(b) deferrals share one limit with each other.
Does a non-governmental 457(b) allow catch-up contributions?
A non-governmental 457(b), offered by a tax-exempt employer to a select group of management or highly compensated employees, does not allow the age-50 catch-up. It may offer the special three-year catch-up before normal retirement age, which is available in both governmental and non-governmental plans.
Do employer contributions to a 457(b) count toward the $24,500 limit?
Yes, once they vest. Unlike a 401(k) match, which sits on top of your deferrals, vested employer contributions to a 457(b) count toward the same annual ceiling as your own deferrals, so a 457(b) employer contribution reduces the room left for salary deferrals.
Does the Roth catch-up rule apply to a governmental 457(b)?
Yes for the age-50 catch-up. Beginning in 2026, a participant whose prior-year FICA wages from the plan sponsor exceeded $150,000 must make catch-up contributions as Roth in a plan that offers Roth. The IRS states the special three-year 457(b) catch-up may still be made pre-tax.
Methodology: 2026 dollar limits come from IRS Notice 2025-67 and IRS news release IR-2025-111. Plan rules come from the Internal Revenue Code (sections 415 and 457), Treasury Regulation 1.457-4, and IRS pages on 457(b), non-governmental 457(b), 403(b), 401(k), and catch-up contributions. Combined totals are arithmetic on those published limits. The worked example uses hypothetical facts for illustration and is not a projection. Because this topic affects financial decisions, anonymous forum anecdotes and unsourced claims were excluded.
This article is for educational purposes only and is not individualized investment, tax, or legal advice. Consult a qualified professional about your specific situation.
