What is a Roth 401(k) and why do I need one? (2024)

Written by Rob Austin, FSA, Vice President Head of Research Wealth Solutions & Strategy

How will your taxes in retirement compare to what they are today? A Roth 401(k) may provide some much-needed relief.

What is a Roth 401(k) and why do I need one? (1)

For most of us, there are many unknowns—Will tax brackets change in the future? How much will I spend in retirement? Will I move to a state that has a different income tax structure than where I live now? The answers to these questions will impact your future taxes, but it’s nearly impossible to arrive at a reasonable degree of certainty.

There is good news, however. If you work for a large employer, you likely have an option within your 401(k) that can help diversify your tax situation in retirement. Let’s talk about these so-called Roth 401(k)s:

  • how they are like traditional 401(k)s
  • the maximum you can contribute to a Roth 401(k)
  • why saving to a Roth 401(k) might be a smart move

Roth 401(k) vs. Traditional 401(k)

Contributions to a 401(k) typically reduce your taxable income now, but you pay taxes on the money as you make withdrawals to cover your expenses in retirement. For Roth 401(k)s, it’s just the opposite. Your tax burden is higher now, but your retirement income is tax free1. Everything else—the investment options, the match you get from your employer, the loan and withdrawal options—are the same as the rest of your 401(k). And you can contribute to both at the same time.

How much can you save to a Roth 401(k)?

Each year, the IRS sets maximum amounts that can be contributed to 401(k) plans. These amounts apply to the combined total of Roth 401(k) and pre-tax 401(k) contributions. In 2023, the annual contribution is capped at $22,500 for people under age 50. Those over 50 are usually eligible for catch-up contributions, bringing their total to $30,000. So, for example, if you’re under 50, and you want to contribute $10,000 to your pre-tax 401(k), the most you can contribute to your Roth 401(k) would be $12,500.

For 2023:

Under age 50Pre-tax 401(k) + Roth 401(k) must not exceed $22,500
Age 50+Pre-tax 401(k) + Roth 401(k) must not exceed $30,000

What is a Roth 401(k) conversion?

Some 401(k) plans allow you to convert your pre-tax 401(k) balance to a Roth 401(k). The catch? Any amount that is converted now will be added to your taxable income this year. Therefore, any dreams of not paying taxes in your golden years could be seriously offset by your tax bill next April 15th.

When is saving to a Roth 401(k) a good idea2?

If your current tax rate and your retirement tax rate are likely to be the same, it won’t really matter if you save on a pre-tax basis or a Roth basis. However, if you expect that your taxes in retirement will be higher than what they are now, Roth 401(k) contributions are generally a good idea. Conversely, if your taxes in retirement are expected to be less, then pre-tax contributions are probably better.

Deciding to contribute to a Roth 401(k) may seem like a simple question of, “Do I want to pay more taxes now or later?” However, there are many details to consider. Before starting to save to a Roth 401(k), be sure to read up on the specifics for your employer’s 401(k) and talk to a professional who understands your specific financial situation and goals.

1 Not all Roth withdrawals are tax-free, but to keep this blog at a high level, we’ll not discuss those nuances here. Before deciding to save to a Roth 401(k), be sure to review the requirements to receive tax-free withdrawals.

2The content of this blog is for general informational purposes only and should not be considered an individualized recommendation or tax, investment, financial or legal advice. Each individual’s circ*mstances are unique, and therefore, you need to assess your own situation and consider consulting with your tax, financial or legal advisor before making a decision. The information contained herein is obtained from what are considered reliable sources; however, its accuracy, completeness or reliability is not guaranteed. Alight Solutions LLC and its’ subsidiaries and affiliates are not responsible for any errors or omissions or for the results obtained from the use of this information.

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FAQs

What is a Roth 401(k) and why do I need one? ›

What is a Roth 401(k)? A Roth is a feature of many 401(k) and similar employer-sponsored retirement plans. Roth contributions are made on an after-tax basis and any investment earnings on Roth contributions are tax-free subject to various requirements.

Why do I need a Roth 401k? ›

It can be a surprisingly complicated choice, but many experts prefer the Roth 401(k) because you'll never pay taxes on qualified withdrawals. Contributions are made with pre-tax income, meaning you won't be taxed on that income in the current year.

Is there a downside to a Roth 401k? ›

The list of cons may be short for Roth 401(k)s, but missing tax deferral is a big one. When faced with a choice of paying more tax now or later, most people choose to pay later, hence the low participation rates for Roth 401(k)s.

What is a Roth 401k for dummies? ›

Key Takeaways

A Roth 401(K) is a type of employer-sponsored retirement savings plan. Contributions made to Roth 401(k) are taxed but earnings and withdrawals made during retirement are tax-free. Contribution limits are adjusted annually for inflation and are announced each year by the Internal Revenue Service (IRS).

What's the difference in a 401k and a Roth 401 K? ›

Retirement contributions to Roth 401(k)s are made with after-tax dollars. Traditional 401(k) contributions are made with pretax dollars. Roth 401(k) withdrawals in retirement are tax-free but traditional 401(k) withdrawals are subject to income tax.

Can I withdraw money from my Roth 401k without penalty? ›

Contributions and earnings in a Roth 401(k) can be withdrawn without paying taxes and penalties if you are at least 59½ and have had your account for at least five years. Withdrawals can be made without penalty if you become disabled.

Do I need to report my Roth 401k on taxes? ›

In the case of a Roth 401(k), you contribute with after-tax dollars. So, your employer would include your contributions in box 1 from your W-2. Whether you own a traditional or Roth 401(k), as long as you didn't take out any distributions, you don't have to do a thing on your federal or state return!

What is the 5 year rule for Roth 401k? ›

A “qualified distribution” is a distribution that is made: at least 5 years after the first contribution to your Roth account; and. after you're age 59½ or on account of you being disabled, or to your beneficiary after your death.

What is the downside of Roth? ›

Roth IRAs don't give you a tax break on contributions, but investment gains and withdrawals are tax-free. Since there are no pre-tax contributions, you can withdraw your principal at any time without penalty. That flexibility may be nice, but it could also leave you short on retirement funds.

What happens to my Roth 401k when I leave my job? ›

Key takeaways

Generally, you have 4 options for what to do with your savings: keep it with your previous employer, roll it into an IRA, roll it into a new employer's plan, or cash it out. How much money you have vested in your retirement account may impact what decision you make.

Can I open a Roth 401k on my own? ›

Finally, a Roth 401(k) is only available through an employer plan. As long as you meet the above MAGI income requirements, you can open a Roth IRA on your own as part of your retirement strategy.

What is the income limit for Roth 401k? ›

Unlike Roth IRAs, Roth 401(k)s do not have any income limits. Regardless of how much you earn, you can contribute to a Roth 401(k), if your employer offers one.

How is a Roth 401k taken out of a paycheck? ›

A Roth 401(k) is a tax-advantaged retirement account that combines features of both a traditional 401(k) and a Roth IRA. Like a traditional 401(k), contributions to a Roth 401(k) are made on a pre-tax basis, meaning that they are deducted from your paycheck before taxes are taken out.

Why should I do a Roth instead of a 401k? ›

In a 401(k) vs. Roth IRA matchup, a Roth IRA can be a better choice than a 401(k) retirement plan, as it typically offers more investment options and greater tax benefits. It may be especially useful if you think you'll be in a higher tax bracket later on.

Why do some people argue that Roth accounts are the better option? ›

Roth individual retirement accounts (IRAs) offer several key benefits, including tax-free growth, tax-free withdrawals in retirement, and no required minimum distributions (RMDs). One key disadvantage: Roth IRA contributions are made with after-tax money, meaning there's no tax deduction in the years you contribute.

Is it better to do pre-tax or Roth 401k? ›

The savings you could secure in retirement by contributing to a Roth account now could be substantially more than the savings you would get with pretax contributions if you're younger with a longer investing horizon. You can contribute up to $7,000 to a traditional IRA or up to $23,000 to a 401(k) in 2024.

Should high income earners use a Roth 401k? ›

Tax diversification: High-income earners often find themselves in higher tax brackets. A Roth 401(k) account gives you more flexibility in managing your tax liability during retirement. Having a Roth account also allows you to be strategic about the tax treatment of your investment choices.

Why should I convert my 401k to Roth? ›

By converting to a Roth IRA, you'll have assets that won't be taxed when withdrawn, potentially allowing you to better manage your tax brackets and enable more personalized tax planning during retirement.

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