401(k) Contribution Limits 2026: Catch-Up Rules and Maximums

The 2026 401(k) Limits at a Glance

These figures come from the IRS cost-of-living announcement for 2026 and apply to 401(k), 403(b), most 457(b) plans and the federal Thrift Savings Plan. You can read the source on the IRS newsroom.

Employee Deferral Limit: $24,500

The employee deferral limit is the most you can put into your own 401(k) in one calendar year from your paycheck. It combines traditional (pre-tax) and Roth contributions, so $15,000 pre-tax plus $9,500 Roth uses the full $24,500. The limit applies per person, not per plan. If you switch jobs mid-year or have two employers, your combined deferrals across all 401(k) and 403(b) plans cannot exceed it.

To hit the limit evenly, divide by your number of pay periods: about $942.31 per paycheck if paid every two weeks (26 checks), $1,020.83 if paid twice a month, or $2,041.67 if paid monthly. If you front-load, check that your employer matches per paycheck, since some plans do not true up the match at year end.

Catch-Up Contributions at 50 and Older

If you turn 50 or older by December 31, 2026, you can add $8,000, for a personal maximum of $32,500. Under SECURE 2.0, savers who are 60, 61, 62 or 63 during the year can instead add $11,250, for a maximum of $35,750. The higher amount ends the year you turn 64, when the standard $8,000 catch-up applies again.

Catch-up dollars sit on top of the regular limit, so they do not reduce the room for your regular deferrals. They are also tested separately, which helps older workers in plans that limit highly compensated employees.

New in 2026: Roth Catch-Up for Higher Earners

Starting in 2026, if your Social Security (FICA) wages from the employer sponsoring the plan were more than $150,000 in the prior year, your catch-up contributions generally must go in as Roth, meaning after-tax. You lose the upfront deduction on those catch-up dollars but the money can grow tax-free. Your plan must offer a Roth option for you to make catch-up contributions at all, so check with your plan administrator if you are near that threshold. Contributions below the regular limit are not affected.

The $72,000 Total Limit

A separate cap applies to all money going into your account for the year: your deferrals, employer matching, profit sharing and any after-tax contributions. For 2026 that total is $72,000 for people under 50. Catch-up contributions are added on top, so the ceiling is $80,000 at ages 50 to 59 or 64 and over, and $83,250 for ages 60 to 63. Most workers never get near this cap. It matters mainly for people whose plans allow after-tax contributions and in-plan Roth conversions, often called the mega backdoor Roth.

Worked Example: $100,000 Salary

Say you are 35, earn $100,000, and your employer matches 50 cents per dollar on the first 6% you contribute.

• To get the full match you need to contribute 6%, or $6,000. The employer adds $3,000.
• If you contribute the full $24,500, the employer still adds only $3,000 because the match caps at 6% of pay. Your account receives $27,500 for the year.
• If your top federal bracket is 22% and the $24,500 is pre-tax, your federal income tax falls by roughly $5,390 compared with taking it as taxable pay. Your actual take-home drops by less than $24,500.
• Contributing only 3% ($3,000) would leave $1,500 of match unclaimed, which is effectively a 50% return you walked away from.

Try your own numbers in the 401(k) calculator, and see how tax savings change your paycheck with the paycheck calculator.

Traditional vs. Roth 401(k): Which Fits the Limit Better?

Both share the same $24,500 limit, but the dollars behave differently. A traditional contribution lowers taxable income now and is taxed when you withdraw. A Roth contribution is taxed now and qualified withdrawals are tax-free. Because the same $24,500 buys more after-tax value as Roth than as traditional, filling the limit with Roth contributions shelters more money over time. A common approach is traditional if you expect a lower bracket in retirement and Roth if you expect the same or higher. Many people split. This is general information, not tax advice.

401(k) vs. IRA Limits in 2026

The 401(k) and IRA limits are separate, so you can contribute to both. The 2026 IRA limit is $7,500, or $8,600 with the $1,100 catch-up at age 50 and older. Whether your IRA contribution is deductible, or whether you can contribute to a Roth IRA at all, depends on income. Use the Roth IRA calculator to see where you stand, and the retirement calculator to project what maxing both could grow to by retirement.

What Happens If You Contribute Too Much

Excess deferrals happen most often when someone changes jobs and both employers withhold the full limit. Excess amounts left in the plan past the April 15 deadline for returning them can be taxed twice, once in the year contributed and again when withdrawn. Contact the plan administrator as soon as you notice, and ask for a corrective distribution of the excess plus earnings before the deadline.

Practical Steps to Take This Year

• Check your year-to-date contributions on your latest pay stub and divide the remaining room by the pay periods left.
• Confirm you are receiving the full employer match; it is the highest guaranteed return you can get.
• If you are 60 to 63, ask whether your plan allows the $11,250 higher catch-up, since administrators must adopt the new amounts.
• If you earn above $150,000 in FICA wages, confirm your plan has a Roth option for catch-up dollars.

Rules differ by plan, so confirm details with your plan administrator or a qualified tax professional.

Prepared by the ProCalcTools editorial team and last reviewed in October 2026 against IRS published limits. This article is for general education only and is not tax or investment advice.