A Roth 401(k) and a Roth IRA both give you tax-free income in retirement, funded with money you have already paid tax on. The Roth 401(k) wins on how much you can put in and the employer match. The Roth IRA wins on investment choice and flexible early access to your contributions. For many people, the answer is to use both.

Roth 401(k) vs. Roth IRA at a glance

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What is a Roth 401(k)?

A Roth 401(k) is an employer plan with Roth tax treatment. You make after-tax contributions through payroll, and qualified withdrawals, including all the growth, come out tax-free. It uses the same high contribution limits as a traditional 401(k), far above what an IRA allows. Nearly all plans that Fidelity administers now offer a Roth 401(k) option, though only around one in five eligible workers uses it.

For 2026, you can contribute up to $24,500 of after-tax pay, plus an $8,000 catch-up at 50 or older, or an $11,250 super catch-up instead for ages 60 to 63. One newer rule for high earners: if you earned more than $150,000 in Social Security wages the prior year, the IRS now requires your catch-up contributions to be made on a Roth basis, under final SECURE 2.0 regulations issued in September 2025. A Roth 401(k) already satisfies that.

A Roth 401(k) has no income limit. If your employer offers one, you can contribute no matter what you earn.

What is a Roth IRA?

A Roth IRA is an individual account you open yourself at a broker or bank, separate from any job. Contributions are after-tax, withdrawals in retirement are tax-free, and you get a much wider set of investments than a workplace plan.

The tradeoff is an income limit. For 2026, direct Roth IRA contributions phase out between $153,000 and $168,000 of modified adjusted gross income for single filers, and between $242,000 and $252,000 for married couples filing jointly. Above the top of the range you cannot contribute directly, though a backdoor Roth remains available. The 2026 Roth IRA limit is $7,500, or $8,600 if you are 50 or older.

The differences that actually matter

Contribution size. The Roth 401(k) limit is more than three times the Roth IRA limit, and employer contributions stack on top of that. If you want to save a large amount in Roth form, the 401(k) is the only way to do it.

Income limits. A Roth 401(k) has none. A Roth IRA cuts off high earners from direct contributions. This is often what decides the order: high earners lean on the Roth 401(k) and use the backdoor for the IRA.

Employer match. Only the 401(k) has one. Any match your employer adds goes into a companion traditional (pre-tax) 401(k) and is taxed on withdrawal.

Investment choice. A Roth IRA lets you pick the provider and hold almost anything. A Roth 401(k) limits you to the plan's menu, often a dozen or two funds set by the administrator.

Early access. With a Roth IRA you can withdraw your contributions any time, tax- and penalty-free; only the earnings are restricted before 59 1/2. A Roth 401(k) is stricter: an early withdrawal is prorated between contributions and earnings, so you cannot pull out just the contributions, and the earnings portion is taxed and penalized.

RMDs. Neither account requires withdrawals during the owner's lifetime. Roth 401(k)s were exempted starting in 2024, when SECURE 2.0 removed lifetime RMDs for designated Roth accounts in employer plans. (Traditional 401(k)s and IRAs still require RMDs at 73, or 75 for those born in 1960 or later.)

Loans. Some Roth 401(k) plans let you borrow against the balance. A Roth IRA never allows loans, though you can use the 60-day rollover window to move money temporarily.

Emergency withdrawals. SECURE 2.0 lets a plan allow one penalty-free emergency withdrawal of up to $1,000 a year, but this is optional: it applies only if your employer has adopted the provision.

Which should you fund first?

A common order: contribute to the Roth 401(k) up to the employer match, then max a Roth IRA if you are eligible, then go back to the Roth 401(k) up to its limit. High earners who are phased out of a direct Roth IRA contribution often just keep going in the Roth 401(k) and add a backdoor Roth IRA. Because there are so many variations, it is worth reviewing your specific plan with a Certified Financial Planner.

Frequently asked questions

Can I have a Roth IRA and a Roth 401(k) at the same time?

Yes. If your employer offers a Roth 401(k) and your income is within the Roth IRA limits, you can contribute to both in the same year, each up to its own limit. High earners phased out of a direct Roth IRA can still use a backdoor Roth alongside the Roth 401(k).

Can I take a loan from my Roth IRA?

No. IRAs do not permit loans. You can move funds to another IRA or plan, or withdraw and redeposit within 60 days to avoid tax, but a true loan is only possible from a 401(k) that allows one.

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

Yes. Both are after-tax, so the rollover is not a taxable event. One caveat: the rollover can start a fresh five-year clock for the Roth IRA unless you already had a Roth IRA open for five years or more.

What happens to my Roth 401(k) if I change jobs?

You can leave it with the old employer (watch for higher fees), roll it into your new employer's Roth 401(k), or roll it into a Roth IRA. Rolling to a Roth IRA gives you more investment options but may reset the five-year clock.

Can I contribute to a Roth 401(k) and a traditional 401(k) at once?

Yes, if your employer offers both. Your combined contributions across the two cannot exceed the annual limit: $24,500 for 2026, or $32,500 with the 50-plus catch-up, rising to $35,750 for ages 60 to 63.

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