Covered by a 401(k) at work? The number that matters for 2026 is $24,500. That is the most you can contribute from your own paycheck this year, up from $23,500 in 2025, and the same limit applies to 403(b) plans and most 457 plans. Every other 401(k) limit, from catch-up contributions to the employer match, builds on top of that figure.

A 401(k) is one of the most effective ways to save for retirement, mostly because of the tax treatment. With a traditional 401(k), you choose a dollar amount or a percentage of each paycheck to set aside before income tax is calculated, so the money you contribute lowers your taxable income for the year. Inside the account, your contributions are invested in stock and bond funds and grow without being taxed each year. You pay ordinary income tax later, when you withdraw the money in retirement.

Many employers also match part of what you put in. A common formula is a dollar-for-dollar match on the first 3% of pay you contribute, so if you defer 3%, a total of 6% of your gross pay lands in the account. Contribute at least enough to capture the full match. It is the closest thing to free money in the tax code, and how your employer’s match works is worth understanding before you set your contribution rate. The match does not count against your $24,500 employee limit, though it does count toward a separate combined cap covered below.

When you decide how much to contribute, talk to your financial advisor about which account to prioritize and how to balance retirement saving against paying down high-interest debt.

Catch up 401(k) contributions in 2026

If you are 50 or older, you can contribute an extra $8,000 in catch-up contributions on top of the $24,500 limit, for a total of $32,500. The catch-up amount rose from $7,500 for 2026.

There are two wrinkles for 2026 that most coverage skips, and both can change your number.

First, the age 60 to 63 “super catch-up.” If you turn 60, 61, 62, or 63 at any point in 2026, your catch-up limit is $11,250 instead of $8,000, which brings your personal maximum to $35,750. The higher amount applies only in those four years. At 64 you drop back to the standard $8,000 catch-up.

Second, the Roth catch-up rule for higher earners. Starting in 2026, if the wages your employer paid you in 2025 were more than $150,000, your catch-up contributions have to go in as Roth (after-tax) dollars rather than pre-tax. You still get to make the catch-up contribution; you just do not get the upfront deduction on that portion, and it grows tax-free instead. This trips people up because they assume every 401(k) contribution is pre-tax. Some plans are still building the payroll mechanics for this, so check with your plan administrator on how yours is handling it. If your plan does not offer a Roth option at all, it cannot accept your catch-up contribution until it adds one.

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Comparing 2025 and 2024 Contribution Limits

Defined Contribution Plan Limits

• Someone in the age 60-63 window uses the $11,250 catch-up instead, for a personal maximum of $35,750 and a combined all-sources limit of $83,250.

The “all sources” line is the one people miss. Your $24,500 is only the piece that comes out of your paycheck. Employer match, profit sharing, and any after-tax contributions stack on top, up to $72,000 in 2026 (or $80,000 with the age 50 catch-up). High earners with a generous match are the ones most likely to run into this ceiling.

When can you withdraw money from a 401(k)?

You can generally start withdrawing from your 401(k) without penalty at age 59 1/2. Take money out before then and you owe a 10% early-withdrawal penalty on top of ordinary income tax on the distribution, so an early withdrawal in a high-income year can lose a third or more to taxes and penalty combined.

One exception matters if you retire early: the “rule of 55.” If you leave your job in or after the year you turn 55, whether you quit or are laid off, you can take distributions from that employer’s 401(k) without the 10% penalty. It applies only to the plan at the job you just left, not to old 401(k)s or IRAs.

At some point you are also required to start drawing the account down. Required minimum distributions (RMDs) now begin at age 73 for anyone born between 1951 and 1959, and age 75 for anyone born in 1960 or later. Your first RMD is due by April 1 of the year after you reach that age; every RMD after that is due by December 31. Waiting until April 1 for the first one means taking two RMDs in the same calendar year, which can push you into a higher bracket.

Miss an RMD and the IRS charges a 25% excise tax on the amount you should have withdrawn, cut to 10% if you correct the shortfall within two years and file Form 5329. That is a real improvement over the old 50% penalty, but it is still steep, and it is how 401(k) money is taxed in retirement that makes the RMD schedule worth planning around rather than reacting to. You can always withdraw more than the minimum; the RMD is a floor, not a cap. Each account’s RMD is calculated separately, and it is on you to get the math right.

Bottom Line

For 2026, $24,500 is your baseline 401(k) limit, $32,500 if you are 50 or older, and $35,750 if you are 60 to 63. If your 2025 wages topped $150,000, plan for your catch-up to go in as Roth. Talk to a financial advisor about where the 401(k) fits alongside your other accounts and how aggressively to fund it this year, keeping in mind that carrying expensive debt into retirement usually costs more than a thinner savings balance.

Frequently Asked Questions

Do employer contributions affect my 401(k) contribution limit?

Employer contributions do not count toward your individual 401(k) contribution limit, which is $24,500 in 2026 ($32,500 with the age 50 catch-up). They do count toward a separate, higher “all sources” limit of $72,000 for 2026 that includes everything going into the account: your deferrals, the employer match, profit sharing, and after-tax contributions. So a large match can help you hit the combined cap without touching your personal limit.

Can I max out both a Roth and a traditional 401(k) in 2025?

No. The IRS sets one combined limit that covers both. Whatever you contribute to a Roth 401(k) and a traditional 401(k) in the same year has to add up to $24,500 or less for 2026, or $32,500 with the age 50 catch-up. You can split your contributions between the two types in any proportion, but the total is capped. Employer contributions sit outside this limit and count only toward the $72,000 all-sources cap.

What happens if I exceed the 401(k) contribution limit?

An excess deferral is taxed twice if you do not fix it: once in the year you contributed and again when you eventually withdraw it. Tell your plan administrator as soon as you notice, and ask for a “corrective distribution” of the excess plus any earnings by April 15 of the following year. This most often happens to people who switch jobs mid-year and contribute to two different 401(k) plans without adding up the combined total.

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