Every October or November, the IRS releases the following year's retirement plan contribution limits, and 2026 brought increases across the board: the employee elective deferral limit, the standard age-50 catch-up, and the overall combined employee-plus-employer ceiling all rose from 2025. Knowing the exact 2026 numbers matters because contributing above your limit creates an excess deferral that must be corrected by a hard deadline, or it gets taxed twice — once when you earn it and again when it's finally distributed.
This guide breaks down every 2026 401(k) contribution number that matters: the standard employee deferral limit, the age-50+ catch-up, the newer SECURE 2.0 "enhanced" catch-up available only to workers aged 60 through 63, the combined annual additions limit under Internal Revenue Code §415(c), how Roth and traditional 401(k) contributions share a single limit rather than doubling it, and the mandatory Roth catch-up rule for high earners that becomes enforceable for the first time in 2026. Figures below are sourced directly from IRS.gov, IRS Notice 2025-67, and the Treasury/IRS final regulations on SECURE 2.0 catch-up contributions.
For 2026, the IRS set the employee elective deferral limit at $24,500, up from $23,500 in 2025 — a $1,000 increase. This is the maximum amount you personally can defer from your own paycheck into a 401(k) in a single calendar year, whether as traditional (pre-tax) contributions, Roth (after-tax) contributions, or a mix of both. It does not include anything your employer contributes on your behalf.
The same $24,500 figure, set under Internal Revenue Code §402(g), also applies to 403(b) plans (common at nonprofits and schools), most 457(b) governmental plans, and the federal Thrift Savings Plan (TSP) used by federal employees and military members.
| Year | Employee Deferral Limit | Change from Prior Year |
|---|---|---|
| 2024 | $23,000 | +$500 |
| 2025 | $23,500 | +$500 |
| 2026 | $24,500 | +$1,000 |
The limit is indexed for inflation each year and announced by the IRS in the fall, typically alongside the annual cost-of-living adjustment notice covering all retirement plan figures — for 2026, that was IRS Notice 2025-67, released November 13, 2025.
If you switch employers mid-year, or hold a second job with a separate 401(k) or 403(b), the $24,500 employee deferral limit is a per-person ceiling that aggregates across all such plans — not a fresh limit at each employer. It's your responsibility to track total deferrals across employers and stop before exceeding $24,500 combined; your employers' payroll systems only track contributions within their own plan and cannot see what you've deferred elsewhere.
Workers who are age 50 or older at any point during 2026 can contribute an additional $8,000 beyond the standard $24,500 limit, for a combined maximum of $32,500. This is up from a $7,500 catch-up in 2025 (which brought the 2025 total to $31,000).
Eligibility is based on your age as of December 31, 2026 — if you turn 50 at any point during the year, you're eligible for the full catch-up for that entire calendar year, even if your birthday falls in December.
The $8,000 standard catch-up applies to workers who are 50 or older in 2026 except those who fall specifically into the 60–63 age window, who instead get the larger enhanced catch-up covered in the next section. In practice, that means the standard $8,000 catch-up applies to workers who are 50 through 59, or 64 and older, during 2026.
Not every 401(k) plan is required to offer catch-up contributions — it's a plan design choice, though the overwhelming majority of employer plans do. If your plan doesn't offer catch-up contributions, you're limited to the standard $24,500 regardless of age. Check your plan's summary plan description or ask your HR/benefits team to confirm your plan allows catch-up deferrals before assuming you can contribute above $24,500.
SECURE 2.0 created a genuinely new catch-up tier that first became available in 2025: workers who turn 60, 61, 62, or 63 during the calendar year can contribute an enhanced catch-up of $11,250 for 2026 — larger than the standard $8,000 catch-up available to everyone else 50 and older. Combined with the $24,500 base deferral, that's a maximum employee contribution of $35,750 for workers in this four-year age window.
This is one of the more confused provisions in retirement plan rules because the eligible age band is narrow and specific — it is not simply "age 60 and up." The enhanced catch-up applies only during the calendar years you turn 60, 61, 62, or 63.
Once you turn 64, you drop back down to the standard $8,000 catch-up for that year and every year after — the enhanced $11,250 tier is strictly limited to the 60–63 window and does not continue once you age out of it. Someone who is 59 for the entire calendar year is also not yet eligible; they get the standard $8,000 catch-up until the year they turn 60.
Like the standard catch-up, the enhanced 60–63 catch-up is only available if your specific employer plan has adopted the SECURE 2.0 provision allowing it. Most major 401(k) providers implemented this by 2025, but smaller or older plan documents may lag — confirm with your plan administrator that the enhanced catch-up is active before assuming you're eligible for the full $35,750.
| Age Group (as of Dec 31, 2026) | Catch-Up Amount | Total Employee Limit |
|---|---|---|
| Under 50 | $0 | $24,500 |
| 50–59 | $8,000 | $32,500 |
| 60–63 | $11,250 | $35,750 |
| 64 and older | $8,000 | $32,500 |
Separate from the employee deferral limit is the overall "annual additions" limit under Internal Revenue Code §415(c) — the combined ceiling on everything that can go into your 401(k) account in a year from every source: your own employee deferrals (traditional and Roth combined), employer matching contributions, employer profit-sharing or non-elective contributions, and forfeitures reallocated to your account. For 2026, that combined limit is $72,000, up from $70,000 in 2025, or 100% of your compensation if lower.
Catch-up contributions (both the standard $8,000 and the enhanced $11,250 for ages 60–63) are the one component that is not counted against the §415(c) annual additions limit — they're added on top. That produces three effective 2026 ceilings depending on age:
| Age Group | 2026 Combined Limit (Employee + Employer) |
|---|---|
| Under 50 | $72,000 |
| 50–59 or 64+ | $80,000 ($72,000 + $8,000 catch-up) |
| 60–63 | $83,250 ($72,000 + $11,250 catch-up) |
For most rank-and-file employees, employer matching and profit-sharing contributions fall well short of the §415(c) ceiling, so this limit rarely comes into play. It matters most for higher earners with generous employer contributions, self-employed people using a Solo 401(k) (where you're both the employee and the employer), and small business owners structuring profit-sharing plans.
A common misconception is that you could contribute $24,500 to a traditional (pre-tax) 401(k) and another $24,500 to a Roth 401(k) in the same year, doubling your tax-advantaged savings. That's not how it works: the $24,500 employee elective deferral limit (plus any applicable catch-up) is a single, combined ceiling across both traditional and Roth contributions to the same plan. You can split it however you like — for example, $15,000 traditional and $9,500 Roth — but the combined total still cannot exceed $24,500 (or $32,500/$35,750 with catch-up).
Both share the identical dollar cap because the limit under §402(g) is defined by the amount deferred from your paycheck, not by which tax bucket it lands in.
Your choice between Roth and traditional applies only to your own employee deferral. Employer matching and profit-sharing contributions are traditionally deposited pre-tax into a separate sub-account, regardless of whether your own contributions are Roth or traditional — though SECURE 2.0 gave plans the option to let employees elect Roth treatment for employer contributions too, a feature not all plans have adopted.
SECURE 2.0 §603 requires that catch-up contributions made by higher-income participants be designated as Roth (after-tax) contributions rather than pre-tax. The rule was originally slated to start in 2024, but the IRS granted administrative transition relief under Notice 2023-62 that pushed it out; that relief generally ended December 31, 2025, making the mandate effective for catch-up contributions made starting January 1, 2026.
The rule applies to anyone whose prior-year FICA wages from the employer sponsoring the plan exceeded $145,000. For 2026 catch-up contributions, the relevant "prior year" is 2025 — so if your 2025 W-2 FICA wages from that specific employer topped $145,000, any catch-up contributions you make in 2026 (whether the standard $8,000 or the enhanced $11,250 for ages 60–63) must be designated as Roth. This threshold is indexed for inflation in $5,000 increments going forward, so it will rise for future years.
The Treasury Department and IRS issued final regulations implementing this rule on September 16, 2025. The final regulations formally apply to taxable years beginning after December 31, 2026, but they explicitly confirm that plans must be operating in compliance with the Roth catch-up requirement starting January 1, 2026, using a reasonable, good-faith interpretation of the statute during the 2026 transition year — in practical terms, 2026 is the first year the rule is actually enforced.
This provision has a significant practical consequence for smaller employer plans that never added a Roth 401(k) feature: if a plan does not offer Roth contributions, it is not permitted to accept any catch-up contributions — pre-tax or otherwise — from employees who exceed the $145,000 threshold. The catch-up doesn't default back to pre-tax; it simply becomes unavailable to those employees until the plan is amended to add a Roth option. This has pushed many plan sponsors that previously offered only a traditional 401(k) to add a Roth feature specifically to preserve catch-up eligibility for their higher earners.
If you contribute more than $24,500 (or your applicable catch-up-adjusted limit) across all your 401(k)/403(b) plans combined for 2026, the excess is called an "excess deferral." You must have the excess amount, plus any earnings on it, distributed back to you by April 15, 2027 (the tax filing deadline for the 2026 tax year) to avoid double taxation.
If the excess deferral isn't withdrawn by the April 15 deadline, it gets taxed twice: once in 2026 as part of your W-2 wages (since it was over-withheld from your paycheck), and again in the year it's eventually distributed from the plan, since the plan has no way to identify or exclude the earlier excess amount from a normal distribution. Corrected in time, only the earnings on the excess (not the original contribution) are taxable, and only in the year of correction.
The most frequent way people accidentally exceed the limit is by working for two employers with separate 401(k) plans in the same year — each employer's payroll system only tracks contributions within its own plan and has no visibility into what you deferred at a previous job. If you change jobs mid-year and both employers offer a 401(k), it's worth manually tracking your combined year-to-date deferrals to avoid an accidental excess.
| Limit Type | 2025 | 2026 |
|---|---|---|
| Employee elective deferral (under 50) | $23,500 | $24,500 |
| Standard catch-up (age 50–59, 64+) | $7,500 | $8,000 |
| Enhanced catch-up (age 60–63, SECURE 2.0) | $11,250 | $11,250 |
| Employee total, age 50–59 or 64+ | $31,000 | $32,500 |
| Employee total, age 60–63 | $34,750 | $35,750 |
| Combined annual additions limit, §415(c) (under 50) | $70,000 | $72,000 |
| Combined limit, age 50–59 or 64+ | $77,500 | $80,000 |
| Combined limit, age 60–63 | $81,250 | $83,250 |
These figures apply to 401(k) plans and, for the elective deferral limit specifically, also to 403(b) plans and the federal Thrift Savings Plan. Governmental 457(b) plans have a separate, parallel elective deferral limit that is not aggregated with your 401(k)/403(b) deferrals under current law — meaning someone with both a 401(k) and a governmental 457(b) can potentially defer up to the limit in each plan in the same year.
CountryTaxCalc.com is reader-supported. When you use our partner links, we may earn a commission at no cost to you. This helps us provide free tax calculators and comparison tools. Learn more about our affiliate partnerships
★ 4.3 Trustpilot · 287,413 reviews
Send money internationally at the real mid-market rate. Free to open. 14.8M customers worldwide. 4.3★ / 287,000+ Trustpilot reviews.
⚠ For currency exchange only — not a bank account replacement.
Send Money Internationally →★ 4.8 Trustpilot · 1,625 reviews
Moving abroad from the US? Greenback's CPAs specialise in FEIE, foreign tax credits and FBAR. Dedicated CPA, flat fee from $565, no surprises. 71,000+ expat returns filed. 4.8★ / 1,625 Trustpilot reviews.
⚠ Not the cheapest option — best for complex situations and expats who want a dedicated CPA.
Get Expert US Expat Tax Help →Interested in reaching this audience? Advertise on CountryTaxCalc →