Turn 60 and Your 401(k) Catch-Up Jumps to $11,250. Turn 64 and It Drops Back to $8,000. The Four-Year Window Congress Built for the Oldest Gen Xers

For four calendar years, workers ages 60 through 63 can push an extra $11,250 into a 401(k) on top of the standard $24,500 deferral limit. Total for 2026: $35,750.

The year you turn 64, that bonus vanishes. Your catch-up reverts to $8,000, and your ceiling drops to $32,500. Congress built a four-year runway, and the oldest Gen Xers (loosely, those born around 1963 to 1966) are the first cohort to walk the whole length of it.

Four Years to Load the Truck

The math is deliberately front-loaded. A 60-year-old maxing the plan in 2026 puts away $35,750. Do that four straight years and the enhanced window alone carries roughly $143,000 in pretax or Roth contributions, before any employer match and before market growth. In your 64th year the limit resets to $32,500 and stays there.

The cliff is age-based, not birthday-precise: eligibility follows the age you attain during the calendar year. If you turn 64 anytime in 2026, you are out of the enhanced band for the whole year.

Where the $11,250 Comes From

The enhanced catch-up is a SECURE 2.0 provision. The change, which took effect on Jan. 1, was enacted as part of the SECURE 2.0 tax law passed in 2022. The provision was scheduled to begin in 2024, but was delayed to give employers and retirement plan managers more time to prepare and update their programs.

It applies to 401(k)s and, per the IRS, to 403(b) plans, typically offered by nonprofit employers, and government 457(b) plans. It does not apply to IRAs. The IRA catch-up for savers 50 and up stays at $1,100 on a $7,500 base in 2026.

SIMPLE plans got their own version: the age 60 to 63 catch-up is $5,250, versus the standard $4,000.

The Roth Twist for High Earners

Here is the catch inside the catch-up. For 2026, employees 50 and older who earned more than $150,000 in 2025 must make their catch-up contributions to a Roth 401(k). That includes the enhanced $11,250 slice for the 60-to-63 crowd.

The threshold is indexed. The law originally set the threshold at $145,000, but the amount is adjusted each year for inflation. And the wage figure that counts is narrower than people assume: check Box 3 on your W-2 tax statement for 2025. That’s the box that shows earnings subject to Social Security tax. Other income, say, earnings from a side gig reported on a Form 1099, or partnership income reported on a Form K-1, doesn’t count for purposes of determining the Roth catch-up threshold.

Practical effect: a 61-year-old W-2 earner at $180,000 who was routing the full catch-up pretax loses that deduction on the catch-up portion. Take-home pay drops even though the total contribution is the same. On the back end, “You can let it grow and take it out tax-free” in retirement, per Pamela Ladd of the AICPA, provided you clear age 59½ and the account’s five-year clock.

Your Plan Has to Offer It

The enhanced catch-up is optional at the plan level. Not all plans offer it. If your employer’s recordkeeper never coded the age 60 to 63 tier, or if the plan lacks a Roth 401(k) feature that high earners now need, the extra $3,250 above the standard $8,000 catch-up simply is not available to you through payroll.

Two calls before year-end: HR, to confirm the plan document permits the enhanced tier; and the recordkeeper, to raise your deferral election so the calendar-year cap actually gets hit.

Moves Before You Age Out

If you are inside the window, treat it like a use-it-or-lose-it bracket:

• Front-load contributions early in the year if your plan allows true-up on the match, so a maxed-out December does not cost you employer dollars.
• Coordinate with a spouse. A dual-earner couple where both are 60 to 63 can defer $35,750 apiece, plus employer contributions inside the overall $72,000 defined-contribution cap.
• If you cross the $150,000 Social Security wage line, model the pretax-versus-Roth swing on your paycheck before January so the withholding change is not a surprise.
• Watch the birthday year. In the year you attain 64, the enhanced tier is gone from January 1. Stack heavier deferrals into your 63 year, not your 64 year.

Deciding whether to fill the Roth catch-up, convert traditional balances alongside it, or slow deferrals to keep cash for other goals is the kind of math worth running with a fiduciary advisor or CPA. Those low-tax years between your last paycheck and your first RMD are often the cheapest time to convert, a window we sized up in a free Roth guide.

This article is for informational purposes only and is not tax, legal, or investment advice. Consult a qualified tax professional about your specific situation.

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