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 — $3,750 more than the standard $7,500 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 twice, is now live for tax years beginning after December 31, 2025. 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 regular age-50 catch-up for the same year
For 2026 the regular age-50 catch-up is $7,500. 150% × $7,500 = $11,250. The $10,000 indexed floor is $10,350 for 2026 (Rev. Proc. 2025-32). The greater of $10,350 and $11,250 is $11,250, so that is the operative 2026 limit.
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 | $7,500 | $32,000 |
| 60 – 63 | $24,500 | $11,250 | $35,750 |
| 64 + | $24,500 | $7,500 | $32,000 |
Note the hard cutoff at 64: the enhanced catch-up disappears the year you turn 64 and reverts to the regular $7,500. A worker who is 63 on Dec 31, 2026 gets $11,250; the same worker on Dec 31, 2027 (age 64) drops to $7,500. 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 $145,000 (indexed; the 2026 figure is $145,000 unchanged from the statutory floor) must be made as Roth (after-tax), not traditional pre-tax. Originally effective for 2024 plan years, IRS Notices 2023-62 and 2024-80 extended the transition relief through December 31, 2025. As of January 1, 2026, the mandate is live.
Practical mechanics:
- The $145,000 wage test uses Box 3 or Box 5 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 $7,500 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.
Roughly 85% of large 401(k) plans (> 1,000 participants) added Roth options during the 2024-2025 transition window, but ~30% of plans with < 100 participants still lack Roth infrastructure. Check your plan’s Summary Plan Description before December 31 salary elections.
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:
- $71,000 for participants under 50
- $78,500 for participants 50-59 (adds $7,500 catch-up)
- $82,250 for participants 60-63 (adds $11,250 super catch-up)
- $78,500 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 $82,250 − $40,000 − $35,750 = $6,500 of after-tax headroom remains for mega-backdoor conversions. Under 50 with the same $40k match, the math is $71,000 − $40,000 − $24,500 = $6,500 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 5): $215,000 → above $145k → 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 | $82,250 − $47,750 = $34,500 | After-tax → in-plan Roth conversion |
| Total annual additions | $82,250 | At the §415(c) cap |
Tax mechanics this year:
- Dana’s pre-tax $24,500 reduces federal AGI from $200,000 to $175,500 — in the 32% bracket that saves ~$7,840 this year
- 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 $34,500 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 + $34,500 = $45,750
- 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 $45,750 Roth contribution grows to ~$78,600 tax-free. The $36,500 traditional grows to ~$62,700 but withdrawals are ordinary income — in retirement at a 24% bracket that nets ~$47,650 spendable. Dana’s single-year 2026 decision produces roughly $30,000 more lifetime spending power from the Roth tilt than from an all-pre-tax plan.
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 32% today, withdraw at 24%: $11,250 deferral saves $3,600 now; after 8 years at 7%, $11,250 grows to $19,320; tax at 24% = $4,637; net = $14,683. Add the $3,600 saved and reinvested at 7% for 8 years = $6,180. Total after-tax = $20,863.
- Roth at 32% today, withdraw tax-free at 24%: $11,250 contribution uses $11,250 after-tax today (zero tax savings); after 8 years at 7%, grows to $19,320 tax-free. Net = $19,320.
Pre-tax wins by ~$1,500 in this scenario — the mandate costs Dana about 8% of the 8-year gain. The gap widens if the retirement bracket is lower than 24% and narrows (or flips in favor of Roth) if retirement bracket equals or exceeds 32%. 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 $7,500 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 $145,000. Above $145k, 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 $145k 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 $82,250. The Roth-mandate at $145k uses Schedule SE net earnings × employment tax multiplier to determine the “wage” figure — in practice most tax software calculates this automatically.
Sources
- IRS, Rev. Proc. 2025-32 — 2026 Pension Plan Limitations
- 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)(7) — enhanced catch-up for ages 60-63
- IRC §415(c) — total annual additions limit