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401(k) Contribution Limits 2026 Explained
The employee 401k contribution limit 2026 is $24,500, up from $23,500 the year before. Add the age-50 catch-up and a 55-year-old can shelter $32,500 of salary in one year. Max the limit from 35 to 65 at a 7% return and the balance passes $2.9 million — which is why knowing exactly how the limit works matters more than any fund pick.
Here is what counts toward the limit, what does not, and the traps that catch high earners every January.
What Counts and What Does Not
The $24,500 figure covers employee elective deferrals only — the money you choose to move from salary into the plan. Three things sit outside it:
- Employer match and profit sharing. These count toward a separate, much higher total limit of up to $72,000 for 2026 (before catch-ups), so matching dollars never eat your personal room.
- Catch-up contributions. From the year you turn 50, add $8,000. From 60 to 63, a higher super catch-up applies under SECURE 2.0, worth roughly $11,000 or more depending on indexing.
- After-tax and Roth money. Roth deferrals use the same $24,500 bucket; only standalone after-tax contributions in plans that allow them use the bigger $72,000 ceiling.
The Trap of Two Jobs
The elective deferral limit is per person, not per plan. Someone who switches employers mid-year and maxes the 401(k) at job one, then gets auto-enrolled at job two, can blow past $24,500 and owe an excess-deferral correction. The fix is telling the new employer to stop deferrals once the cap is hit — payroll systems do not talk to each other. If the excess comes out by the tax filing deadline, no double taxation occurs; left in, the same dollars get taxed twice.
Self-employed readers play by different math: a solo 401(k) allows employee deferrals plus an employer contribution of roughly 20% of net self-employment income, which is why the self-employed version is worth comparing against a SEP IRA.
How to Actually Max It Without Feeling It
Divide $24,500 by pay periods. A biweekly schedule means about $943 per paycheck. Employees who set the dollar amount in January — rather than a percentage — avoid the classic error of hitting the cap in November and missing two or three months of employer match, because some plans only match paychecks where the employee also contributes.
One more 2026-specific note: under SECURE 2.0, high earners aged 50 and over must make catch-up contributions as Roth money, so those dollars no longer reduce taxable income today even though they still grow tax-free.
This article is general educational information only, not financial, tax, investment, accounting, or legal advice, and is not a recommendation to buy, sell, or hold any product or security. Figures reflect published IRS, HMRC, and Social Security Administration guidance for 2026 and are subject to change and annual indexing; always confirm current thresholds with the official source before acting. Rules differ by country, state, and personal situation, and nothing here creates a fiduciary or advisory relationship. This site is supported by advertising, which does not influence our editorial conclusions. For any decision with real financial consequences, consult a licensed fiduciary advisor or tax professional.