SECURE 2.0 Act §109, effective for plan years beginning after December 31, 2024, created a new tier of 401(k) catch-up contributions aimed at workers in the peak-earning home stretch before retirement. For 2026, workers who are age 60, 61, 62, or 63 at year-end can contribute a special catch-up of $11,250 — $3,250 more than the standard $8,000 catch-up available to age 50+. Combined with the 2026 regular 401(k) elective deferral limit of $24,500, the age-60-63 cohort can defer up to $35,750 of wages into a 401(k) this year, before considering any employer match.
A second SECURE 2.0 shoe drops this year too: the Roth-mandate for high-earner catch-ups, delayed by a two-year administrative transition, now applies to tax years beginning after December 31, 2025 (the detailed final regulations apply from 2027; for 2026 plans use a reasonable, good-faith interpretation). Here is the full picture.
The Super Catch-Up Formula — Greater of $10,000 or 150%
SECURE 2.0 §109 set the special catch-up limit at the greater of:
- $10,000 (indexed for inflation starting 2026), or
- 150% of the 2024 regular age-50 catch-up (the statutory base under SECURE 2.0 §109)
The 2024 regular age-50 catch-up was $7,500, so 150% × $7,500 = $11,250 — this base is fixed by statute, not the current-year $8,000 catch-up. The indexed $10,000 floor has not overtaken that base, so IRS Notice 2025-67 states the age-60-63 limit remains $11,250 for 2026.
This special catch-up applies to 401(k), 403(b), and governmental 457(b) plans only — not to IRAs and not to SIMPLE IRAs (SIMPLEs have their own parallel 60-63 boost at $5,250 for 2026, using a different formula).
2026 Catch-Up Contribution Amounts by Age
| Age at Year-End | 2026 Regular 401(k) Limit | 2026 Catch-Up | 2026 Total Deferral |
|---|---|---|---|
| Under 50 | $24,500 | — | $24,500 |
| 50 – 59 | $24,500 | $8,000 | $32,500 |
| 60 – 63 | $24,500 | $11,250 | $35,750 |
| 64 + | $24,500 | $8,000 | $32,500 |
Note the hard cutoff at 64: the enhanced catch-up disappears the year you turn 64 and reverts to the regular $8,000. A worker who is 63 on Dec 31, 2026 gets $11,250; the same worker on Dec 31, 2027 (age 64) drops to the regular catch-up. This creates a narrow four-year window to maximize.
Age is determined by the age you will reach by the end of the calendar year, not age on the contribution date. Someone born November 15, 1964 turns 62 in 2026 and qualifies for the full 2026 super catch-up even for contributions made in January 2026.
The Roth-Mandate Kicker for High Earners (2026)
SECURE 2.0 §603 requires that any catch-up contribution made by a participant whose prior-year FICA wages exceeded $150,000 (indexed; IRS Notice 2025-67 raised the threshold from $145,000 to $150,000, so the 2026 test looks at 2025 wages above $150,000) must be made as Roth (after-tax), not traditional pre-tax. Originally effective for 2024, IRS Notice 2023-62 provided an administrative transition period for the first two years (2024 and 2025). From January 1, 2026 the statutory requirement applies.
Practical mechanics:
- The $150,000 wage test uses Box 3 (Social Security wages) of the prior-year W-2 from the same employer sponsoring the plan. Self-employment income does not count. Wages from a different employer do not count.
- Below the threshold, the participant chooses Roth or pre-tax (or splits).
- At or above the threshold, the entire catch-up portion (regular $8,000 or super $11,250) must be Roth. Pre-tax contributions are capped at the regular $24,500.
- If the plan does not offer a Roth option, no catch-up is allowed for the high earner in 2026. The plan can choose to pay out excess as a regular distribution.
Check your plan’s Summary Plan Description before December 31 salary elections to confirm it offers a Roth option.
The §415(c) Total Annual Additions Cap
A separate ceiling applies to all contributions (employee + employer + catch-up + after-tax) going into a participant’s 401(k) account in a single year. Under IRC §415(c) the 2026 cap is:
- $72,000 for participants under 50
- $80,000 for participants 50-59 (adds $8,000 catch-up)
- $83,250 for participants 60-63 (adds $11,250 super catch-up)
- $80,000 for participants 64+
This matters for mega-backdoor Roth strategies. If an employer match + profit sharing uses $40,000 of the §415 cap and the employee defers $35,750 (age 60-63), only $83,250 − $40,000 − $35,750 = $7,500 of after-tax headroom remains for mega-backdoor conversions. Under 50 with the same $40k match, the math is $72,000 − $40,000 − $24,500 = $7,500 also, by coincidence; the actual numbers depend on the match.
Worked Example — Age 62, $200,000 Salary
Meet Dana, a software engineering director turning 62 on August 10, 2026:
- 2025 W-2 wages (Box 3, capped at the Social Security wage base): at least $176,100 → above $150k → all 2026 catch-up must be Roth
- 2026 salary: $200,000 → plenty of room to defer
- Employer 401(k) match: 6% of salary dollar-for-dollar up to the IRS compensation cap → $12,000 match
- Plan offers Roth 401(k): Yes
- Plan offers mega-backdoor after-tax + in-plan Roth conversion: Yes
Dana’s 2026 contribution plan:
| Bucket | Amount | Tax Treatment |
|---|---|---|
| Regular 401(k) elective deferral | $24,500 | Pre-tax (Dana’s choice, not mandated) |
| Super catch-up (age 60-63) | $11,250 | Must be Roth (SECURE 2.0 §603) |
| Employer match | $12,000 | Pre-tax (employer side always pre-tax unless opted Roth) |
| Subtotal | $47,750 | |
| §415(c) headroom for after-tax | $83,250 − $47,750 = $35,500 | After-tax → in-plan Roth conversion |
| Total annual additions | $83,250 | At the §415(c) cap |
Tax mechanics this year:
- Dana’s pre-tax $24,500 reduces federal AGI from $200,000 to $175,500 — saves about $5,880 of federal tax this year at 2026 single rates (24% bracket)
- The $11,250 Roth catch-up is funded with $11,250 of after-tax dollars — no current deduction, but tax-free growth and tax-free distributions in retirement
- The $35,500 mega-backdoor converts to Roth the same pay period, so earnings on the after-tax portion accrue inside the Roth sleeve (no “pro-rata tax” on conversion because there are no earnings yet)
- Total Roth sleeve added in 2026: $11,250 + $35,500 = $46,750
- Total traditional 401(k) sleeve added in 2026: $24,500 + $12,000 = $36,500
At 7% real growth over 8 years (retire at 70) the $46,750 Roth sleeve grows to ~$80,300 tax-free. The $36,500 traditional sleeve grows to ~$62,700, but withdrawals are ordinary income — at a 24% bracket that nets ~$47,700 spendable.
Traditional vs Roth — Does the Mandate Hurt High Earners?
Conventional wisdom says defer pre-tax while in a high bracket, pay tax in retirement at a lower bracket. The SECURE 2.0 Roth-mandate overrides this choice for catch-ups, but the actual after-tax math is closer to break-even than it first looks:
- Pre-tax at 24% today, withdraw at 22%: the $11,250 deferral saves $2,700 now; after 8 years at 7% it grows to $19,330; tax at 22% = $4,253; net $15,077. The $2,700 saved and reinvested at 7% grows to $4,639. Total after-tax = $19,716.
- Roth at 24% today, withdraw tax-free: the $11,250 grows to $19,330 tax-free. Net = $19,330.
Pre-tax wins by about $390 if the retirement rate is 22%. At a 24% retirement rate the two are identical, and Roth wins if the retirement rate is higher. For workers expecting retirement wealth > $3M or significant IRMAA exposure, the Roth-mandate is actually a gift.
Frequently Asked Questions
Does the age-60-63 catch-up apply if I am 63 on Dec 31 2026 and 64 on Dec 31 2027?
Yes for 2026 — qualification is based on year-end age. You get the $11,250 super catch-up for 2026 and drop to the regular catch-up for 2027.
Can I split the catch-up between Roth and pre-tax?
Only if your prior-year wages from the plan-sponsoring employer were at or below $150,000. Above $150k, the entire catch-up is Roth-mandated. Below, you can split however the plan allows.
What if my employer does not offer a Roth 401(k)?
SECURE 2.0 permits the plan to prohibit catch-up contributions entirely for participants subject to the Roth mandate rather than being forced to add a Roth feature. Many small-plan sponsors took this route. Check the SPD — if there is no Roth option, you lose the catch-up benefit until the plan adds one.
Does the $150k test use 2025 wages or 2026 wages?
Prior-year (2025) wages. The rule looks at Box 3 or Box 5 of your 2025 W-2 from the employer sponsoring the 401(k) plan — so you know your 2026 status on January 1.
Can self-employed solo 401(k) owners use the super catch-up?
Yes. A self-employed individual with a solo 401(k) who is 60-63 can make $24,500 employee deferrals + $11,250 super catch-up + employer profit-sharing up to the §415 cap of $83,250. The Roth requirement looks at FICA wages from the sponsoring employer, so self-employed owners with no such wages are not subject to it.
Sources
- IRS, Notice 2025-67 — 2026 Amounts Relating to Retirement Plans and IRAs
- IRS, Notice 2023-62 and Notice 2024-80 — Roth-mandate transition relief
- SECURE 2.0 Act of 2022, Public Law 117-328 — §109 (super catch-up) and §603 (Roth mandate)
- IRS, 401(k) Plan Catch-Up Contribution Eligibility
- IRC §414(v)(2)(E) — enhanced catch-up for ages 60-63; §414(v)(7) — Roth catch-up requirement
- IRC §415(c) — total annual additions limit