This FAQ gives source-checked answers to common 401(k) questions for October 2026. A 401(k) is an employer retirement account that lets workers set aside pay for retirement on a pre-tax or Roth after-tax basis. Use it now to set contributions, handle catch-ups, and plan withdrawals. The figures below reflect 2026 federal limits and SECURE 2.0 rules affecting this fall.
Table of Contents
- How much can you save in 2026?
- What changes if you are 50 or older?
- Where does the employer match fit?
- When must you withdraw, and can you borrow?
- Will you be enrolled automatically?
How much can you save in 2026?
Workers under age 50 can defer $24,500 across all 401(k), 403(b), and 457 plans combined. The IRS reports the increase from $23,500 in the IRS newsroom announcement.
That limit covers your own elective deferrals only. It does not include employer matching or profit-sharing contributions. If you hold two jobs with separate plans, track the combined total yourself.
What changes if you are 50 or older?
Workers age 50 and older can add a standard $8,000 catch-up, for a $32,500 personal total. Your plan must permit catch-up contributions to use it. Employees ages 60-63 get a larger SECURE 2.0 super catch-up of $11,250 instead of $8,000, for a $35,750 total. The IRS describes both tiers on the IRS COLA limitations page.
The higher amount ends in the year you turn 64. High earners face a Roth rule for catch-ups. TheStreet, reporting IRS and Treasury confirmation, notes that catch-ups must be Roth after-tax if prior-year employer FICA wages exceeded $145,000 indexed, about $150,000 for 2025, under final rules issued Sept. 15, 2025, in TheStreet report on high-earner catch-ups. That shift costs affected savers the current-year deduction on the catch-up amount.
- Under 50: $24,500 personal deferral
- Age 50 and older: $24,500 plus $8,000 catch-up
- Ages 60-63: $24,500 plus $11,250 super catch-up
Where does the employer match fit?
Total annual additions from employee and employer together are capped at $72,000 for 2026. With the standard age-50 catch-up, the combined ceiling rises to $80,000, according to the IRS COLA table.
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This ceiling matters most for high savers with generous matches. Once your deferrals plus match reach the cap, extra employer dollars cannot be allocated for the year. Ask payroll how your plan tracks the combined total.
When must you withdraw, and can you borrow?
Required minimum distributions start at age 73 for people born 1951-1959 and age 75 for those born 1960 or later. For a 73-year-old in October 2026, the IRS lifetime divisor is 26.5, so divide the prior Dec. 31 balance by 26.5, per IRS Publication 590-B as summarized by U.S.
Bank. Borrowing is separate and allowed only if the plan permits it. IRS rules allow up to 50 percent of the vested balance to a $50,000 maximum, repaid in level quarterly payments within five years except for home loans. Any unpaid balance becomes a taxable distribution and can trigger penalties if you are under 59.5.
Will you be enrolled automatically?
New 401(k) and 403(b) plans established after Dec. 29, 2022 must auto-enroll eligible employees for plan years after Dec. 31, 2024.
The typical starting rate is 3-10 percent with annual escalation, according to a Pinnacle Plan Design summary of SECURE 2.0. Older plans are grandfathered but may choose to add auto-enrollment. Check your onboarding notice for the starting rate, escalation schedule, and opt-out deadline.
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