401(k) Contribution Limits 2026: Full Breakdown

Each fall the IRS announces inflation-adjusted retirement limits for the coming year, and for 2026 a few numbers moved up while two new rules deserve close attention: the enhanced catch-up for people in their early sixties and the Roth catch-up requirement for high earners. This guide lays out every 401(k) limit that applies in 2026, who each one is for, and what to do if you accidentally put in too much.

If you are new to how these accounts work, start with our explainer on what a 401(k) is. If you already understand the basics and just want the numbers, you are in the right place.

The 2026 employee contribution limit

The headline number is the employee elective deferral limit: $24,500 for 2026. This is the maximum you can contribute from your own paycheck, across traditional and Roth 401(k) combined, not counting catch-up. It rose from the prior year's figure as part of the IRS annual cost-of-living adjustment. You can verify the official numbers on the IRS limits page.

This limit applies per person, not per plan. If you change jobs midyear and have two 401(k)s, the $24,500 is your total across both. It is your responsibility, not your employers', to avoid exceeding it when you have multiple plans in one year.

Catch-up contributions: the 50+ and the new 60-63 rules

If you are 50 or older, the tax code lets you contribute extra to make up for lost time. For 2026:

• Age 50 and older: an additional $8,000 catch-up, bringing the personal limit to $32,500.
• Ages 60 to 63 (SECURE 2.0 super catch-up): an enhanced catch-up of $11,250 instead of the standard $8,000, bringing the personal limit to $35,750.

The super catch-up is one of the most important and least-known changes from the SECURE 2.0 Act. It targets a narrow window, ages 60 through 63, on the theory that these are peak earning, final-stretch years where extra savings room helps most. The moment you turn 64, you revert to the standard catch-up amount. Workers in this band should confirm their payroll and plan administrator support the larger figure, because not every system was updated promptly.

The combined employer and employee limit (415(c))

The $24,500 figure only covers what you contribute. There is a larger ceiling, called the Section 415(c) "annual additions" limit, that caps everything going into your account in a year: your contributions, your employer's match or profit-sharing, and any after-tax contributions.

For 2026, the combined 415(c) limit is $72,000 ($80,000 if you are using the standard 50+ catch-up). This is the number that strategies like the mega backdoor Roth operate within: after you max your $24,500 deferral and add the employer match, the leftover room up to $72,000 can sometimes be filled with after-tax contributions.

There is also a compensation cap of $360,000 for 2026, which is the maximum amount of pay that can be considered when calculating contributions. Above that salary, additional earnings do not generate more matchable or contributable room.

2026 limits at a glance

All figures reflect the IRS cost-of-living adjustments for 2026. Confirm the latest at IRS.gov.

Roth vs traditional: same limit, different timing

A common point of confusion: there is no separate, higher limit for choosing Roth. The $24,500 elective deferral limit is shared across Roth and traditional 401(k) contributions. You can put it all in one, all in the other, or split it, but the combined total cannot exceed the limit. Likewise, the $72,000 combined limit applies regardless of how you split.

The Roth-versus-traditional decision is about when you pay tax, not how much you can save. For a full comparison, see our guide on Roth vs traditional accounts.

The new Roth catch-up requirement for high earners

SECURE 2.0 added a rule that affects higher earners specifically: if your prior-year wages from the employer sponsoring the plan exceeded a set threshold (indexed, around $145,000 and adjusted for inflation), your catch-up contributions must be made on a Roth (after-tax) basis rather than pre-tax. In other words, high earners can still make catch-up contributions, but they no longer get the upfront deduction on that portion. If your plan does not offer a Roth option, it may not be able to accept catch-up contributions from affected employees at all, so check with your benefits team.

IRA limits, for context

Because people often fund both, here are the related 2026 IRA limits: the IRA contribution limit is $7,500, with an additional $1,100 catch-up for those 50 and older. IRA limits are entirely separate from your 401(k) limits, so contributing to one does not reduce the other. Note that Roth IRA contributions, unlike Roth 401(k) contributions, phase out at higher incomes.

What happens if you over-contribute

If you contribute more than the elective deferral limit, the excess is called an "excess deferral" and must be corrected. The standard fix:

1. Notify your plan administrator that you have an excess deferral.
2. Request a corrective distribution of the excess amount plus any earnings on it.
3. Have it processed by April 15 of the following year.

If you correct on time, the excess is taxed in the year you contributed, but you avoid the worst outcome. Miss the deadline and the excess can be taxed twice: once for the contribution year and again when you eventually withdraw it. This is most likely to happen when you switch jobs midyear and both plans accept deferrals without coordinating.

Strategies to max out

Maxing a 401(k) is a cash-flow exercise. A few practical tactics:

• Capture the full match first. Before chasing the maximum, make sure you are getting every dollar of free employer match. That is always the highest-return contribution.
• Spread contributions across the year. Some plans stop matching once you hit the deferral limit. If you front-load contributions and max out in October, you might miss matches in November and December. Check whether your plan offers a "true-up" that corrects this; if not, pace yourself to contribute through year-end.
• Increase by 1% a year. If maxing out feels out of reach, raise your contribution rate by one percentage point each year or with each raise. The increase is small enough to barely notice and compounds powerfully.
• Use catch-ups deliberately. If you are 50+, or especially 60 to 63, the extra room is significant. Build the higher amount into your annual plan rather than treating it as an afterthought.

Sources

All limits reflect the IRS cost-of-living adjustments announced for 2026. The catch-up and Roth catch-up provisions stem from the SECURE 2.0 Act.

This article is educational information, not individualized financial, tax, or investment advice; consult a qualified professional about your specific situation.

Sources: IRS.gov 401(k) and IRA limits, IRS COLA increases for dollar limitations.