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401(k) vs Roth 401(k): How Do You Decide?

By Ellevest Team

So your employer offers a 401(k). That’s great news for you — a 401(k) is an A+ tool to help you put money aside for retirement and save you some serious scratch on taxes. But how much to contribute to a 401(k) isn’t necessarily the only decision you need to make. Half of US employers offer both a traditional 401(k) and a Roth 401(k). Both have tax advantages, but they work differently from one another.

So ... what actually is a Roth 401(k), and what do you need to know before you can pick?

401(k) vs Roth 401(k): How Do You Decide?

First question: When do you want to pay taxes — now or later?

Income taxes are a thing. And the money you withdraw from your 401(k) when you retire is, technically, income. But by choosing between a traditional and a Roth, you do get to decide if you want to pay those taxes later or now (or some later and some now).

You might be able to save money in the long term if you pay those taxes now. It all comes down to tax brackets — because you’re probably not going to be in the same one forever.

Maybe you plan to live off less money during retirement than you’re making today. That would mean your tax bracket could be lower in retirement — which means you’d probably save money by waiting to pay your taxes until then.

Or you might expect your income to go up a lot between now and retirement. In that case, your tax bracket could be higher once you retire — which means you’d probably save money by paying taxes now. (Of course, all of this assumes that our general tax bracket structure stays the same. Who even knows.)

With a traditional 401(k), you pay taxes later. With a Roth 401(k), you pay taxes now. So if you think you’ll move down in tax brackets when you retire, you might choose a traditional, and if you think you’ll move up in tax brackets when you retire, you might choose a Roth. Or, if you’re like, “heck if I know,” you might plan for either reality by using both.

Roth vs. Traditional 401(k) Explainer

Traditional vs. Roth 401(k): More things to think about

Still not sure which is right for you? Here’s a rundown of the main ways a traditional 401(k) and a Roth 401(k) are similar and different.

401(k) vs. Roth 401(k): The Cheat Sheet

How they’re the same

Income limits

Nada. You can contribute to a traditional or Roth 401(k) no matter how much you make. There’s one exception: If you’re considered a “highly compensated employee” (if you make $125,000 per year, are in the top 20% of earners in the firm, or own more than 5% of the company), your contributions may be capped because of the IRS’s non-discrimination requirements. Check with your HR team or 401(k) plan administrator if you think that might apply to you.

Contribution limits

The annual 401(k) contribution limit in 2019 is $19,000 (or $25,000 if you’re over 50). How (and whether) you split that between a traditional and Roth account is up to you.

Age requirement for withdrawals

You can’t take your money out of a 401(k) until you’re 59½ (unless you’re going through a hardship or meet one of the IRS’s other exceptions). Otherwise, you’ll have to pay all the taxes you owe plus a 10% penalty fee. Ouch.

Required minimum distributions (RMDs)

You have to start withdrawing your money in the year you turn 70½ (unless you’re still working for that employer). If you don’t there are — you guessed it — more hefty fees.

Taxes while your money’s growing

Good news: You won’t pay taxes on any capital gains, dividends, or interest that your contributions earn. (Nice.)

How they’re different

Taxes today

With a traditional 401(k), you don’t pay income taxes on the money you put in today — which is why you might see them called “pre-tax” retirement accounts. Instead, they usually come out of your paycheck before taxes, and they reduce your total taxable income. So if you made $60,000 and put $8,000 into your traditional 401(k), those contributions would cut your taxable income down to $52,000.

With a Roth 401(k), you make contributions “post-tax,” meaning you’ve already paid income tax on that money. You don’t get to deduct them, but that’s OK — the tax benefits of a Roth come later.

Taxes at retirement

Uncle Sam has a long memory. If you use a traditional 401(k), he’ll have been waiting for you to retire so he can finally collect those taxes you’d didn’t pay yet. So when you make withdrawals during retirement, they’ll be taxed according to your tax bracket at that time.

With a Roth 401(k), your tax bill is already paid, so you’ll get to withdraw your money (and earnings!) tax-free, as long as your account is at least five years old.

FYI: Your employer match won’t go into a Roth

Many employers offer a 401(k) contribution match, meaning if you put money into your 401(k), they’ll put some in, too. (Yes, that means free money.) This is pretty straightforward with a traditional 401(k), because you’ll pay all your taxes later, when you retire.

But with a Roth 401(k), you’re using after-tax dollars, and your employer isn’t going to pay income taxes for you. So they’ll probably deposit your matching contributions into a separate, traditional 401(k), and you’ll pay taxes on them during retirement.

Keep an eye on fees

With a 401(k) — traditional or Roth — your employer selects a range of investment options for you to pick from. Because you don’t have a ton of options, you might have less control over how much you’re paying in fees — and sometimes those fees can be high.

For many people, even if the fees aren’t quite as low as you could get with an IRA, the additional tax benefits of a 401(k) outweigh the cost in fees. That being said, it’s definitely worth making sure just in case.

And if you leave your job, you won’t be able to contribute to that 401(k) (or get all the same tax benefits) anymore. That’s a good time to look into rolling your old 401(k) over into either an IRA or your new employer’s 401(k).

So, which one is right for you?

The whole traditional-vs-Roth 401(k) question has a lot to do with taxes, and everyone’s tax situation is different. Ellevest isn’t a tax pro, so we can’t tell you exactly what’s right for you.

Here’s what we can tell you: If you think your tax rates are going to go up in retirement, consider the Roth. If you think your tax rates are going to go down in retirement, or you need to reduce your taxable income today, then consider the traditional.

Something else to think about: If federal tax rates go up in the future, then the decision to use a traditional will have less of a payoff. If federal tax rates go down, the decision to use a Roth could come back to bite you.

There’s no way of knowing that, so one way to hedge your bets is to use both a traditional and a Roth 401(k). You can divide your contributions between the two any way you want — you just can’t do more than $19,000 ($25,000 if you’re over 50) in total. If your main account is a Roth and your employer gives you a match, as mentioned above, this strategy might come built-in. Either way, it’s a good idea to talk to a tax pro to really understand what’s right for you.

The whole “which type of 401(k)” question isn’t half as important as just getting started. Putting money toward your future regularly and often is step one in going after the retirement you deserve.

Disclosures

© 2018 Ellevest, Inc. All Rights Reserved.

You may or may not have noticed that we linked to a page on nerdwallet.com as the source for this year's tax brackets. FYI, NerdWallet, Inc (“Solicitor”) serves as a solicitor for Ellevest, Inc. (“Ellevest”). Solicitor will receive compensation for referring you to Ellevest. Compensation to the Solicitor will be no more than $175 per client. You will not be charged any fee or incur any additional costs for being referred to Ellevest by the Solicitor. The Solicitor may promote and/or may advertise Ellevest’s investment adviser services. Ellevest and the Solicitor are not under common ownership or otherwise related entities.

Information was obtained from third party sources, which we believe to be reliable but not guaranteed for accuracy or completeness. The information provided should not be relied upon as investment advice or recommendations, does not constitute a solicitation to buy or sell securities and should not be considered specific legal, investment or tax advice.

The information provided does not take into account the specific objectives, financial situation or particular needs of any specific person.

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Investing entails risk including the possible loss of principal and there is no assurance that the investment will provide positive performance over any period of time.

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The Ellevest team is working to help women reach their financial and professional goals.