Workers 60 to 63 Can Put $35,750 Into a 401(k) This Year. At 64 the Limit Drops Back to $32,500. The Window Closes Without a Notice

The enhanced catch-up contribution for older 401(k) savers is one of the least-advertised benefits in the retirement code. Accordingly, the regular elective-deferral limit sits at $24,500 in 2026, with a standard catch-up of $8,000 available at age 50 and older, for a potential total of $32,500. In the enhanced window, the catch-up rises to $11,250, pushing the potential employee total to $35,750. Who qualifies, and for how long, determines whether those figures apply.

Window Runs on Calendar Years by Age Reached

The eligibility rule is where confusion begins, as the enhanced limit applies only during the four calendar years in which a worker turns 60, 61, 62, and 63. Eligibility is tied to the age a worker reaches during the year. That distinction sounds academic until it shows up on a birthday.

Age 64 Ends It, Even in January

Consider a worker who begins 2026 at age 63 and turns 64 in November. He will not get the enhanced limit for 2026, as his final eligible year was 2025, the year he turned 63. Someone who reasons that he is still 63 for most of the year is planning around a limit he does not have. If he contributes toward $35,750, he will over-contribute and have to unwind the excess. If he plans conservatively at $32,500 for a year he was in fact ineligible for the higher amount, he simply loses the room.

The window ends on December 31 of the year a worker turns 63. A January or February birthday in the following year does not restore it. Once the calendar flips, the ceiling reverts to the ordinary catch-up amount available to any worker 50 and older.

Plan Has to Offer It

Age is only the first hurdle, as the enhanced catch-up is an optional plan feature. An employer’s plan document has to include it, and not every plan does. A worker can be squarely inside the age window and still be capped at the standard ceiling because the plan itself never adopted the higher tier.

Payroll systems generally will not flag the difference. They enforce whatever limit the plan is coded to accept, and a worker who never asks will never learn the higher option was unavailable, or that it existed at all. The only reliable way to know is to ask the plan administrator in writing, ideally before setting a deferral rate for the year.

Roth Requirement Changed the Math

The tax treatment may also have shifted underneath higher earners. For 2026, workers whose 2025 FICA wages from the sponsoring employer exceeded $150,000 generally must make their catch-up contributions as Roth rather than pretax. The savings ceiling is unchanged; the immediate deduction is gone. A worker counting on the full $35,750 to reduce this year’s taxable income will instead have the catch-up portion taxed now. That changes cash flow even though the account still fills to the same level.

A related detail often gets missed. Traditional pretax 401(k) deferrals still count as wages for Social Security payroll tax purposes, so contributing more does not lower the wages recorded on the Social Security earnings record.

No Letter Arrives

The core of this benefit is that nobody tells the beneficiary. No notice arrives when eligibility begins at 60, and none arrives when it ends after the year a worker turns 63. The plan does not announce it, the payroll system does not prompt it, and the limit simply reverts. A worker who never went looking will defer at the ordinary catch-up level through all four eligible years and never learn what was left on the table.

(This is one of several quiet IRS rules that drain retirement accounts without warning, and we mapped the rest in a free guide: The Retiree’s Tax Trap Map.)

The Bureau of Labor Statistics puts average annual household expenditures at $78,535 in 2024, while the Bureau of Economic Analysis shows the personal savings rate at 2.8% in the second quarter of 2026, down from 6.2% in the first quarter of 2024. Older workers approaching retirement are trying to save more in a household economy that, in aggregate, is saving less. An unnoticed ceiling on how much they can shelter carries a real cost.

What to Confirm Before Year-End

Three checks close the loop for this year. Work out which calendar years match ages 60 through 63 based on the age reached in each year. Ask the plan administrator, in writing, whether the plan actually offers the enhanced catch-up. Check whether 2025 FICA wages from the sponsoring employer crossed the $150,000 threshold, because that determines how the catch-up dollars are taxed.

For anyone in a final eligible year, the one call to make is to the plan administrator, and the deadline is December 31. The window closes on that date regardless of when the birthday falls, and nothing in the following January reopens it.

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