The Roth 401(k) Contribution: Roth Redux
A relative newcomer to the retirement space, the Roth 401(k) combines some of the advantages of a Roth IRA with traditional 401(k) plans.
Basically, the Roth 401(k), which was introduced in 2006, allows you to fund your retirement plan with after-tax dollars. Those contributions then grow tax free. The main advantage of the Roth 401(k), though, comes into play in retirement—the investment earnings are not taxed when you withdraw your money during retirement. With your regular pre-tax account, you'll be paying whatever income tax rate applies at the time you make withdrawals. Another benefit is that the Roth 401(k) is available to everyone, regardless of income level (the Roth IRA phases out eligibility starting at $ for single filers and $ if you are married filing jointly).
The same annual contribution limits for defined-contribution plans currently in place ($ for /, plus $ if you're older than 50) apply to Roth 401(k) contributions. Therefore, you cannot contribute more than the maximum for all your 401(k) contributions combined, including both pre-tax and Roth 401(k) contributions.
So that begs the question, to which bucket should you contribute?
For both types of contributions, you are essentially assessing a trade-off between an up-front tax benefit and a post-retirement benefit. That analysis varies based on your current tax situation, expected future tax rate, time until retirement, and other factors. Generally speaking, if you expect your tax rate to remain the same or be higher in the future, the Roth 401(k) may be the preferred choice. Some financial planners suggest splitting your contributions between the contribution types, to hedge your bets. Of course, it's always a good idea to take counsel from your own financial advisors and accountants before making any decision.
 
> Home
> Glossary
> Support
 
    Comparing Roth and Pre-Tax Contributions  
      Roth   Pre-Tax (Regular)  
    Employee Contribution   Post-tax only   Pre-tax only  
    Employer Contributions   Optional. Employer matches are made with pre-tax dollars and that match accumulates in a separate account that is taxed as ordinary income at withdrawal.   Optional. Employer matches are made with pre-tax dollars and that match accumulates in a separate account that is taxed as ordinary income at withdrawal.  
    Tax Status   Pay taxes on income that's contributed at the point of contribution, but withdraw contributions and earnings tax-free.   Contributions reduce your taxable income today, but contributions and earnings will be taxed at the prevailing tax rate upon withdrawal.  
    Contribution Limits   $ for , plus $ in catch-up contributions if you're age 50 or older.   The same as the Roth limits—remember, it's a combined limit for both types.  
    Loans   Allowed.   Allowed.  
    Early Withdrawals   The earnings attributable to the Roth 401(k) contributions lose their tax-free status. In addition, if the distribution occurs prior to the participant attaining age 59 ˝ the amount may be subject to the 10% early withdrawal penalty.   If you take a distribution before reaching 59 ˝, you may be subject to a 10% withdrawal penalty. The penalty may not apply in certain "hardship" cases. The amount withdrawn also will be subject to income tax.  
    Switching jobs   Can rollover to a Roth IRA or to a Roth bucket in new employer's plan, if available.   Can leave in place, rollover to new employer's plan (if same type), or rollover to IRA.  
                         
    Learn More  
    > Planning Basics: Getting Your Finances in Shape
> Disability and Life Insurance: Just in Case
> Estate Planning: Will Power
 
  © 2026 Morningstar Investment Management LLC