Roth 401(k) Rollover to Roth IRA: Rules, Tax Treatment & the 5-Year Trap

Rolling a Roth 401(k) to a Roth IRA is one of the cleaner moves in the retirement playbook — no taxes, no penalties, and the money stays in a Roth wrapper. But two mechanics trip people up every year: the employer match creates a silent pre-tax balance that can't go to the Roth IRA, and the Roth IRA's five-year qualified distribution clock may restart from zero depending on your account history. Here's the full picture.

What is a Roth 401(k)?

A Roth 401(k) — formally called a designated Roth account — is an after-tax contribution subaccount inside an employer's 401(k) plan. You contribute post-tax dollars, the money grows tax-free, and qualified distributions (after age 59½ and the five-year holding period) are entirely tax-free.²

The 2026 employee deferral limit is $24,500 combined across pre-tax and Roth 401(k) contributions ($32,500 if you're 50 or older; $35,750 if you're 60–63 using the SECURE 2.0 super catch-up). Your total 401(k) contributions from all sources — employee deferrals, employer match, profit-sharing — cap at $72,000 under IRC § 415(c).³

The rollover is tax-free — but watch the employer match

When you roll a Roth 401(k) to a Roth IRA, the IRS treats it as a qualified rollover contribution. No taxes are triggered: both the after-tax contributions and the accumulated earnings move to the Roth IRA without any recognition event.¹

The complication is your employer's matching contributions. Most employer matches go into a pre-tax sub-account, not the Roth designated account — even if you make all your own contributions to the Roth side. When you leave the job and request a rollover, you typically end up with two balances that must go to two different destinations:

A split rollover example

Say you have $200,000 in your 401(k) when you leave: $170,000 in the Roth designated account and $30,000 in pre-tax employer match. You request a direct rollover:

• $170,000 flows to your Roth IRA — zero tax owed
• $30,000 flows to a Traditional IRA — zero tax owed now, but that $30,000 and all its future growth will be taxable when withdrawn

Your plan administrator should provide two separate rollover checks or wires. If they issue a single combined distribution, work with your IRA custodian immediately — you have a small window to sort the allocation without triggering tax.

The five-year qualified distribution rule: does the clock reset?

This is the most misunderstood part of a Roth 401(k) rollover. Many people assume their Roth 401(k)'s holding period carries over to the Roth IRA. It does not.

A Roth IRA has its own five-year qualified distribution clock, measured from the year of the first contribution or rollover to any Roth IRA you've ever owned.⁴ The Roth 401(k)'s separate holding period is irrelevant to the Roth IRA clock.

Scenario A: You already have a Roth IRA

If you opened a Roth IRA in any prior tax year — even with a $1 contribution — the Roth IRA five-year clock backdates to January 1 of that year. A rollover from your Roth 401(k) benefits from whichever clock started earlier. If you've had a Roth IRA for more than five years and you're 59½ or older, distributions from the rolled-over funds are immediately qualified.

Scenario B: You've never had a Roth IRA

If you roll your Roth 401(k) into a brand-new Roth IRA, the five-year clock starts January 1 of the year you open the account. A rollover completed in July 2026 means the clock started January 1, 2026 — qualified distributions aren't available until January 1, 2031.

This usually isn't a crisis. If you're also under 59½, you couldn't take penalty-free qualified distributions anyway. And the Roth 401(k)'s own five-year rule does transfer for purposes of determining whether the rolled contributions are "regular contributions" in the Roth IRA — meaning early distributions of your contribution basis may still be penalty-free. But if you're 60 or older with a Roth 401(k) you've held for years and you expected immediate qualified distributions from a Roth IRA, check your account history carefully.

SECURE 2.0 changed the RMD calculus (2024 onward)

Before SECURE 2.0, Roth 401(k) accounts were subject to required minimum distributions during the account owner's lifetime — the same RMD rules as pre-tax 401(k) accounts. That was a significant reason to roll out of a Roth 401(k) before age 73: move to a Roth IRA, and RMDs go away forever.

SECURE 2.0 § 325 eliminated Roth 401(k) lifetime RMDs starting January 1, 2024. If you reached your required beginning date before 2024, separate transition rules apply — worth discussing with an advisor. For everyone else, Roth 401(k) accounts now behave like Roth IRAs in this respect: no RMDs ever during your lifetime.⁵

This doesn't mean rolling over is wrong — it's often still the right move (see below). But the RMD argument is no longer the deciding factor it once was.

Why roll over anyway?

Post-SECURE 2.0, the case for rolling a Roth 401(k) to a Roth IRA rests on other advantages:

• Investment universe. A Roth IRA at Vanguard, Fidelity, or Schwab gives you access to any ETF, index fund, or individual stock. Most 401(k) plans offer 20–30 funds. If your Roth 401(k) plan has high-cost options, rolling out to a Roth IRA with zero-expense-ratio index funds can be worth thousands over decades.
• Plan fees. Many employer plans charge administrative fees of 0.1%–0.5% of assets annually. On a $400,000 Roth 401(k) balance, 0.3% is $1,200 per year in drag that compounds against you.
• Account consolidation. If you've changed jobs several times, you may have Roth 401(k) balances at multiple old employers. Rolling all of them into a single Roth IRA simplifies management and beneficiary designations.
• Estate planning. Roth IRAs are generally more flexible for estate planning — inherited Roth IRA rules and beneficiary options may differ from inherited 401(k) rules depending on plan documents.

When NOT to roll over

Keep the Roth 401(k) in place if any of these apply:

• You're age 55–59 and might need the Rule of 55. The Rule of 55 (details here) allows penalty-free withdrawals from a 401(k) if you separate from service at 55 or older. Rolling to an IRA permanently forfeits this exception — you'd be locked in until 59½ for penalty-free access. This applies to the pre-tax portion, but practically constrains the whole decision.
• You need ERISA creditor protection. 401(k) assets are protected by ERISA from virtually all creditors without dollar limit. Roth IRA protection is state-dependent; federal bankruptcy protection is capped. If you're in a profession with high litigation exposure, this matters.
• Your Roth IRA is brand new and you're close to 59½ with a large balance. If your five-year Roth IRA clock is, say, 3 years in and you're 57, you'll be 59½ in 2.5 years but won't have qualified distributions until the clock completes. The Roth 401(k) (which may already be past its own five-year holding period) could provide more flexibility for a short-term distribution if the plan allows it.
• Your new employer's Roth 401(k) has genuinely good options. Rolling to a new employer's Roth 401(k) sidesteps the five-year IRA reset, keeps all Roth assets in one employer plan, and may make you eligible for plan loans. If the new plan has low-cost index funds, this is a legitimate choice.

Three real scenarios

Scenario 1: 43, just left job, no existing Roth IRA

Maria, 43, leaves her tech company with $220,000 in her Roth 401(k) (held 8 years). She has never opened a Roth IRA. She rolls the $220,000 to a new Roth IRA in April 2026. Her Roth IRA five-year clock starts January 1, 2026 — qualified distributions are available starting 2031. She's also not 59½ until 2042, so the five-year reset is irrelevant to when she can withdraw without penalty. She opens the Roth IRA now, starts the clock running, and her $220,000 will compound tax-free for another 16 years before she hits 59½.

Scenario 2: 64, retiring, Roth IRA opened in 2015

David, 64, retires with $340,000 in his Roth 401(k) and a $45,000 pre-tax employer match balance. He opened a Roth IRA in 2015. His Roth IRA five-year clock cleared in 2020. He rolls $340,000 to the Roth IRA (tax-free, immediately qualified given his age and IRA history) and $45,000 to a Traditional IRA. He can now draw on the $340,000 Roth IRA with zero income tax for the rest of his life, while drawing down the Traditional IRA strategically to fill lower tax brackets. No RMDs on either Roth account during his lifetime.

Scenario 3: 57, high income, considering Backdoor Roth

Susan, 57, earns $300,000 — well above the 2026 Roth IRA direct contribution income limit ($168,000 single). She has $180,000 in her Roth 401(k) from a past employer and wants to also do Backdoor Roth contributions going forward. If she has no pre-tax IRA balances, the Backdoor Roth works cleanly. Her Roth 401(k) rollover goes to the Roth IRA — it's after-tax, so it doesn't create a pro-rata problem. She then continues making non-deductible Traditional IRA contributions + Roth conversions each year. The rollover actually benefits her by consolidating into a single Roth IRA she actively manages. See Backdoor Roth and the Pro-Rata Trap for how pre-tax IRA balances would complicate this picture.

Step-by-step: how to execute the rollover

1. Open a Roth IRA at a custodian of your choice (Fidelity, Vanguard, Schwab) if you don't already have one. Note the date — the five-year clock starts January 1 of this year.
2. Contact your old plan administrator. Request a direct rollover. Specify that you want the Roth designated account balance directed to a Roth IRA and any pre-tax balance directed to a Traditional IRA.
3. Provide both account numbers. Your Roth IRA account number for the Roth portion, and a Traditional IRA account number for the pre-tax employer match. If you don't have a Traditional IRA yet, open one.
4. Do not take an indirect rollover. An indirect rollover triggers mandatory 20% federal withholding on the pre-tax portion — and the same 60-day rollover clock that applies to all indirect rollovers. See Direct vs. Indirect Rollover for details.
5. Verify the deposit. Once funds arrive, confirm with your custodian that the Roth portion is properly coded as a rollover contribution to the Roth IRA (not a regular contribution). This matters for the five-year tracking and IRS Form 5498 reporting.

Frequently asked questions

Can I roll a Roth 401(k) into a Traditional IRA?

No. The designated Roth account must roll into a Roth IRA. You cannot "undo" the after-tax nature of Roth contributions by routing them to a pre-tax Traditional IRA. The IRS is clear on this: Roth 401(k) rollovers go to Roth IRAs or to Roth designated accounts in other employer plans.¹

Does my Roth 401(k)'s five-year holding period transfer to the Roth IRA?

No. The Roth IRA maintains its own five-year clock from the date of the first Roth IRA contribution or rollover — ever, across all Roth IRAs you've ever had. Your Roth 401(k)'s holding period does not transfer. They are separate rules for separate account types.

What if my employer's Roth 401(k) already passed the five-year mark and I'm over 59½?

Your Roth 401(k) distributions could be qualified right now under the 401(k)'s own rules. But once you roll to a Roth IRA, the qualifying test is the Roth IRA's five-year rule plus age 59½ — and if that Roth IRA clock is newer than five years, you'd need to wait. This is rare enough that most people don't hit it, but it's worth verifying your Roth IRA opening date before rolling if you're in your early 60s with an existing Roth IRA.

Can I roll a Roth 401(k) to a new employer's Roth 401(k)?

Yes, if the new plan accepts incoming Roth rollovers (most large 401(k) plans do). This preserves the Roth 401(k)'s own five-year clock, keeps assets in a 401(k) for ERISA creditor protection, and avoids the Roth IRA five-year question entirely. The trade-off is remaining inside the plan's fund menu rather than the open Roth IRA investment universe.

Can I make new Roth IRA contributions if my income is above the limit?

Not directly. In 2026, Roth IRA contributions phase out at $153,000–$168,000 (single) and $242,000–$252,000 (married filing jointly).⁶ However, there's no income limit on rolling a Roth 401(k) into a Roth IRA — that's a rollover, not a contribution. High earners who can't contribute directly to a Roth IRA can still receive rolled-over Roth 401(k) assets without restriction. For ongoing annual contributions, see Backdoor Roth and the Pro-Rata Trap.