Roth 401(k) Contributions: 2026 Limits, Catch-Ups, and RMD Rules

Roth 401(k) contributions are after-tax dollars you defer from your paycheck into your employer’s retirement plan, so that qualified withdrawals in retirement — including every dollar of investment growth — come out free of federal income tax. For 2026, you can defer up to $24,500, and unlike a Roth IRA, no income ceiling can shut you out. You pay tax now at today’s rates instead of later at unknown ones.

How Much You Can Contribute in 2026

The IRS caps elective deferrals into a 401(k) at $24,500 for 2026, up from $23,500 in 2025.¹ Roth and traditional contributions within the same plan share that ceiling. If you put $15,000 into Roth and $9,500 into pre-tax, you’ve hit it.

The limit also applies across all employers combined. Change jobs mid-year and your deferrals from the old plan still count toward the annual maximum.²

A separate, higher ceiling covers your deferrals plus everything your employer adds. For 2026, total additions to a single plan cannot exceed $72,000 or 100% of your compensation, whichever is less.³ That figure mainly matters when the match and profit-sharing are generous.

Catch-Up Contributions at 50 and Older

Workers 50 and older get extra room on top of the $24,500. The standard 2026 catch-up is $8,000, for a total possible deferral of $32,500.¹

SECURE 2.0 added a higher tier for participants aged 60 through 63. If you fall in that range during 2026, your catch-up jumps to $11,250, bringing the maximum deferral to $35,750.¹ At 64, you drop back to the standard $8,000.

Mandatory Roth Catch-Up for Higher Earners

Starting in 2026, a new rule applies if your FICA wages from the plan’s employer exceeded $150,000 in the prior year. All of your catch-up contributions must go into a Roth account. Pre-tax catch-up is no longer available to you.⁴ The $150,000 threshold uses Social Security wages (Box 3 of your W-2), not Medicare wages, and it will adjust for inflation.

If your plan doesn’t offer a Roth option, participants over the wage threshold can’t make catch-up contributions at all. Those earning $150,000 or less in FICA wages are unaffected and can keep making pre-tax catch-up if the plan allows it. Worth confirming with HR if you’re near the line.

No Income Cap for Participation

Unlike a Roth IRA, there is no income phase-out for Roth 401(k) contributions. If your employer’s plan offers the Roth option and you meet basic eligibility — usually a minimum age or length of service — you can contribute no matter what you earn.⁵

That makes the workplace Roth especially useful for high earners locked out of direct Roth IRA contributions. Fluctuations in household income from year to year don’t affect eligibility either.

Employer Matching Contributions

Historically, employer matching money always went into a pre-tax bucket, meaning it would be taxable on withdrawal in retirement even when your own contributions were Roth.

SECURE 2.0 opened the door to Roth matching. Plans can now let employees receive matching contributions as Roth dollars.⁶ If your plan adopts the feature, the match counts as taxable income in the year it’s deposited. Roth matching contributions are not subject to payroll tax withholding, but they do raise your taxable income for the year. Employers report them on Form 1099-R rather than the W-2, using code G in Box 7.⁷

One catch: you can only designate employer contributions as Roth if you’re fully vested in them at the time they’re allocated. Under an unmatured vesting schedule, the Roth designation isn’t available for those dollars.

Vesting Schedules for Matching Funds

Your own Roth contributions are 100% vested the moment they leave your paycheck. Matching funds are different. Plans typically use one of two structures:⁸

Three-year cliff vesting, where you own 0% of the match until you complete three years of service and then become 100% vested at once.
Six-year graded vesting, which climbs gradually: 20% after two years, 40% after three, and continuing up to 100% at six years.

These are the slowest schedules the law permits. Many employers vest faster, and some vest matching contributions immediately. Leave before you’re fully vested and you forfeit the unvested portion. A generous match you never vest in is worth nothing.

When Withdrawals Come Out Tax-Free

The payoff for paying tax upfront is that qualified distributions come out federally tax-free, earnings included. A distribution qualifies only if it meets two conditions at once:⁵

First, at least five years must have passed since January 1 of the year of your first Roth contribution to that plan. A contribution made in December 2026 starts the clock in January 2026, so the five-year mark is January 2031.

Second, you must meet one of these triggers: reaching age 59½, becoming disabled as defined by federal tax law, or death (distributions to a beneficiary).

Both conditions have to be satisfied. Turning 59½ doesn’t help if you haven’t held the account five years, and a decade in the plan doesn’t help if you’re 45. Newer participants sometimes get caught by this. Start contributing early so the clock is well underway before you need the money.

Withdrawing Before You Qualify

Take money out before meeting both conditions and the contribution portion still comes out tax-free, since you already paid tax on it. Earnings are the problem. Earnings from a non-qualified distribution get added to your taxable income for the year.⁹ Under 59½, those earnings also face a 10% early distribution penalty unless a standard exception applies, such as disability or certain medical expenses.

The 10% penalty has exceptions. The income tax on earnings does not.

No More Lifetime RMDs

Before 2024, Roth 401(k) accounts were subject to required minimum distributions starting at age 73, even though Roth IRAs never had lifetime RMDs. SECURE 2.0 closed that gap. Beginning in 2024, Roth 401(k) balances are excluded from RMD calculations entirely. The old workaround of rolling into a Roth IRA before RMD age isn’t necessary anymore. The account can sit and compound tax-free for the rest of your life.

Rolling a Roth 401(k) Into a Roth IRA

When you leave the employer or retire, you can roll your Roth 401(k) directly into a Roth IRA with no taxes owed. A direct trustee-to-trustee transfer is the cleanest route: no withholding, no deadline.¹⁰

If the distribution is instead paid to you, you have 60 days to deposit it into a Roth IRA. The plan may withhold 20% for federal taxes, which you recover when you file — but only if you complete the rollover for the full original amount, using other cash to cover the withheld portion. Any shortfall not replaced within 60 days is treated as a taxable distribution.¹⁰

Roth 401(k) funds can only move to a Roth IRA or another plan’s designated Roth account. They cannot go to a traditional IRA, a SEP-IRA, or any pre-tax account.¹¹

Watch the five-year clock. Time in a Roth 401(k) does not count toward the Roth IRA’s separate five-year requirement. If you’ve never contributed to a Roth IRA before the rollover, the clock starts fresh when the money lands. If you already have a Roth IRA with earlier contributions, the earlier start date applies.⁹ Opening a Roth IRA with even a small contribution years before you plan to roll over can spare you an unnecessary wait.

Fixing an Over-Contribution

If your combined deferrals across plans exceed the annual limit, notify your plan and pull the excess by April 15 of the following year. Corrected on time, the excess is taxed only in the year you originally deferred it. Investment earnings on the excess are taxed in the year they’re distributed, and no early withdrawal penalty applies to timely corrections.¹²

Miss the April 15 deadline and the excess dollars are taxed twice, once in the year you contributed and again when they eventually come out. Late corrections can also trigger the 10% early distribution penalty, 20% mandatory withholding, and spousal consent requirements.¹²

Getting Started

Set a contribution rate as a percentage of gross pay or a flat dollar amount per paycheck, through your employer’s benefits portal or a deferral election form. If you plan to split between Roth and traditional, make sure the form clearly designates which dollars are after-tax so payroll withholds correctly.

After the first deduction, check that your pay stub shows a distinct Roth line rather than a generic pre-tax 401(k) deduction. Payroll coding errors happen, and catching them early avoids a messy correction later. If the plan offers auto-escalation, confirm whether it applies to your Roth allocation or only to the pre-tax side. Most employers need one to two pay cycles to process a new election or a switch between Roth and traditional, and most plans let you change your rate or your Roth-versus-traditional split at any time, though a few restrict changes to open enrollment.

1
Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026; IRA Limit Increases to $7,500
2
Office of the Law Revision Counsel. 26 U.S. Code 402 – Taxability of Beneficiary of Employees’ Trust
3
Internal Revenue Service. Notice 2025-67: 2026 Amounts Relating to Retirement Plans and IRAs
4
Internal Revenue Service. Treasury, IRS Issue Final Regulations on New Roth Catch-Up Rule, Other SECURE 2.0 Act Provisions
5
Internal Revenue Service. Retirement Topics – Designated Roth Account
6
Internal Revenue Service. SECURE 2.0 Act Changes Affect How Businesses Complete Forms W-2
7
Internal Revenue Service. SECURE 2.0 Act Impacts How Businesses Complete Forms W-2
8
Internal Revenue Service. Issue Snapshot – Vesting Schedules for Matching Contributions
9
Internal Revenue Service. Retirement Plans FAQs on Designated Roth Accounts
10
Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions
11
Internal Revenue Service. Rollover Chart
12
Internal Revenue Service. 401(k) Plan Fix-It Guide – Elective Deferrals Weren’t Limited to the Amounts Under IRC Section 402(g)