One of the most important decisions you’ll make when enrolling in a 401(k) is whether to contribute on a Traditional or a Roth basis. Both help you save for retirement, but they differ in how and when you pay taxes. Understanding the difference can help you choose the option that best fits your situation and your expectations for the future.
What’s the difference?
The main difference comes down to when you pay taxes.
With a Traditional 401(k), you contribute money before taxes are taken out of your paycheck. This reduces your taxable income today, and your investments grow tax-deferred until you withdraw them in retirement — at which point you pay ordinary income taxes.
With a Roth 401(k), you contribute money after taxes have already been taken out. You don’t get a tax break today, but any qualified withdrawals in retirement — including investment earnings — are generally tax-free.
Traditional vs Roth in practice
Suppose you earn $70,000 per year and contribute $5,000. With a Traditional 401(k), your taxable income drops to $65,000 this year. With a Roth 401(k), you’re still taxed on the full $70,000, but your $5,000 grows tax-free for retirement.
That difference has a big impact on how and when you pay taxes on your savings over time.
When might a Traditional 401(k) make sense?
A Traditional 401(k) may be more beneficial if:
- You expect to be in a lower tax bracket in retirement than you are today
- You want to reduce your taxable income now
- You prefer to maximize your take-home pay in the short term
- You are in your peak earning years, when an upfront deduction is most valuable
When might a Roth 401(k) make sense?
A Roth 401(k) may be more beneficial if:
- You expect to be in a higher tax bracket in retirement
- You are early in your career and currently in a lower bracket
- You want tax-free income in retirement
- You prefer more predictable tax treatment later in life
Can you use both?
Yes — many plans let you split your contributions between Traditional and Roth accounts. This provides tax diversification and gives you more flexibility to manage taxable income in retirement.
You might contribute 6% to a Traditional 401(k) and 4% to a Roth 401(k), balancing pre-tax and after-tax savings.
The bottom line
The right choice depends on your current tax situation, your long-term goals, and how you expect your income to change over time. If you’re unsure which is best, reach out to a financial professional to assess your situation.
This article is for general educational purposes only and is not tax, legal, or investment advice. Consider your own situation and consult a qualified professional before making decisions about your retirement account.