Most conversations about the 2026 retirement changes have centered on the new Roth catch-up mandate for high earners. A separate SECURE 2.0 provision, in effect for its second year in 2026, deserves at least as much attention from workers closing in on retirement. It lets employees ages 60 through 63 defer up to $35,750 into a workplace plan — well above the standard age-50 catch-up ceiling — but only for a narrow four-year window.
How the Higher Limit Is Built
The IRS confirmed 2026 limits in November 2025. The regular 401(k) deferral limit rises to $24,500, and the standard catch-up contribution for participants age 50 and older is $8,000. SECURE 2.0 Section 109 adds a "super catch-up" for participants who are 60, 61, 62, or 63 by year-end, set at the greater of $10,000 or 150% of the age-50 catch-up. For 2026 that formula produces $11,250, unchanged from 2025.
Stacked together, a qualifying participant can contribute $24,500 plus $11,250 for a total employee deferral of $35,750. The same structure applies to 403(b) plans, governmental 457(b) plans, and the federal Thrift Savings Plan. SIMPLE plan participants get a smaller super catch-up of $5,250.
Two mechanical rules matter. First, a worker must fully use the $24,500 base limit before any catch-up dollar counts. Second, the higher limit applies only in the calendar years the participant is 60 through 63. Once the participant turns 64, the ceiling reverts to the standard age-50 catch-up. That is what makes the provision a genuine window, not a permanent raise.
Plan Adoption Is Optional
The super catch-up is not automatic. Under IRS final regulations issued in September 2025, individual plan sponsors decide whether to permit it, and the plan document must specifically authorize the higher limit. Large recordkeepers rolled out support during 2025, but smaller employers may not have amended their plans yet. Workers approaching 60 should confirm eligibility with HR or the recordkeeper before assuming the higher limit is available.
The Roth Overlay for High Earners
The Roth catch-up mandate that took effect January 1, 2026 applies to super catch-up contributions as well. A participant age 60–63 who earned more than $150,000 in prior-year FICA wages from the plan sponsor must make the full $11,250 catch-up on an after-tax Roth basis. Pre-tax treatment is still available for base contributions up to $24,500, but not for anything above it.
Why the Window Is Worth the Cash Flow
The four-year window arrives when many workers are in peak earnings and empty-nester cash flow. Using the full $11,250 catch-up for each of four years contributes an extra $45,000 of principal beyond the standard age-50 limits. Assuming a 6% compound return over ten years to a retirement date of 70, that additional principal grows to roughly $80,600 — a meaningful late-career supplement that would not be recoverable once age 64 arrives.
For pre-retirees who can afford the deferral, the practical steps are straightforward: confirm the plan offers the super catch-up, verify Roth availability if prior-year wages exceeded $150,000, and adjust payroll deferrals early enough in the year to hit both the base limit and the higher catch-up without running out of paychecks in December.
Sources: Internal Revenue Service, Fidelity, Kiplinger, International Foundation of Employee Benefit Plans, Mercer