Contribution amounts and tax treatments stand out
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Roth IRAs and traditional 401(k)s are popular retirement savings options. Even though the end goal is the same, these options both offer very different tax benefits and have distinct requirements. Utilizing one or both of these investment vehicles to prepare for retirement can be quite advantageous, and making the most of their benefits requires understanding the differences between how each works. We will take an in-depth look at both types of plan to help you understand the intricacies of each. That will help you decide which type of retirement savings would be best for you.
Key Takeaways
- Roth IRAs and traditional 401(k)s both provide tax-free growth year by year once money is invested in them.
- Contributions to a Roth IRA do not entitle the account owner to a tax deduction in the year of contribution. Contributions are made with money left over after tax has been paid and are known as after-tax contributions.
- A traditional 401(k) account is funded with pre-tax money, which entitles the account owner to a tax deduction for the contribution amount in that year.Â
- Anyone can open and contribute to a Roth IRA as long as their modified adjusted gross income (MAGI) meets certain income eligibility limits.
- A 401(k) is an employer-sponsored retirement plan in which many employers offer matched employee contributions up to a certain level.Â
- Required minimum distributions (RMDs) are not mandatory from a Roth IRA
- Required minimum distributions generally must begin from a 401(k) by age 73, but you can delay the start if youâre still working at that workplace.Â
Understanding Roth IRAs
A Roth IRA is a specific type of individual retirement account (IRA) in which you contribute after-tax dollars and enjoy tax-free growth of your investments. Because you are investing money on which you have already paid tax, you will not get an upfront tax deduction for your contribution. However, this also means that when you withdraw the funds during retirement you will not pay taxes on the earnings if you are at least age 59 ½ and have owned this or another Roth IRA for at least five years; the five-year clock starts January 1 of the year of your first contribution.Â
Because you are investing with after-tax funds, you can withdraw Roth IRA contributions tax-free at any time and age, if necessary. The right to withdraw Roth IRA earnings tax-free after youâve owned the Roth IRA for at least five years and you are 59 1â2 can be especially beneficial if you end up in a higher tax bracket during retirement. It is important to note that you are never required to take a distribution from your Roth IRA. In this way, investing in a Roth IRA can also be a useful estate planning tool. Not only are required minimum distributions (RMDs) not mandatory, but you can pass along the account tax-free to your beneficiaries someday.
Required minimum distribution rules do apply to any heirs, but their withdrawals would be tax-free. Still, a Roth IRA inherited by a non-spouse must be emptied within 10 years, although no distributions are required until the tenth year. A spousal beneficiary of an inherited Roth IRA can either take distributions based on their own life expectancy (starting the year after the owner’s death) or empty the account within 10 years of the owner’s death.
Contribution Limits and Rules
- Married joint filers or qualifying surviving spouses, with a modified adjusted gross income (MAGI) of at least $236,000 (up from $230,000 in 2024): You canât make a Roth IRA contribution if your MAGI is $246,000 (up from $240,000 in 2024) or more.
- Singles, heads of household, or marrieds filing separately and you didnât live with your spouse at any time in 2025 and your modified AGI is at least $150,000 (up from $146,000 in 2024): You canât make a Roth IRA contribution if your MAG is $165,000 (up from $161,000 in 2024) or more.
- Marrieds filing separately is the same for 2025 as it was for 2024âyou lived with your spouse at any time during the year, and your modified AGI is greater than $0: You canât make a Roth IRA contribution if your modified AGI is $10,000 or more.
Investment Options and Flexibility
A Roth IRA is an individual retirement account that you can set up on your own, regardless of whether you work for an employer or you are self-employed. Because it is an individual account, you invest directly through a brokerageâwhich provides you with many investing options. Your only investment limit is determined by the investment options that your brokerage offers. Typically, your Roth IRA can invest in any of the following:
- Stocks
- Bonds
- Mutual funds
- ETFs
- Cryptocurrency
- Options
- REITs
- Money market funds
- Alternative investments
Understanding 401(k)s
A traditional 401(k) is an employer-sponsored retirement plan. This means that only active employees of a company are eligible to participate. With this type of retirement plan, employees can elect to contribute pre-tax dollars for investment, thereby lowering their current taxable income. Because you get a tax break for the year you contribute, you will pay taxes on earnings when you withdraw the funds, which customarily happens in retirement. This type of retirement plan is especially beneficial to people who expect to be in a lower tax bracket during retirement. When investing in a 401(k) plan, you will generally be required to start taking minimum distribution amounts at age 73.
One of the biggest benefits to participating in a 401(k) plan is that many companies offer a matching contribution up to a certain percentage. For example, if an employee contributes 3% of each paycheck, some employers match that portion for a total of 6% going into the employeeâs retirement account. Companies that match often match different amounts, so make sure you know how much your employer offers. Additionally, companies may have rules for vesting schedules regarding employer contributions and the time frame in which an employee will be fully vested in those contributions. Â
Contribution Limits and Employer Matching
The 401(k) contribution limit for 2025 is $23,500 (up from $23,000 from 2024) for employee salary deferrals, and defined contribution limits of $70,000 for 2025 (up from $69,000 for 2024) for the combined employee and employer contributions. The limit on total employer and employee contributions for 2025 is $77,500 with catch-up contributions for members aged 50 through 59 or 64 and older, or $81,250 for plan members aged 60 through 63, if your plan allows. The annual compensation limit for 2025 is $350,000 (up from $345,000 in 2024).
The catch-up contribution of up to $11,250 for people ages 60 through 63 is a new change for 2025, making eligible employees’ maximum contribution levels for 2025:Â
- $31,000 for ages 50 and older
- $34,750 for ages 60 through 63
Depending on your plan, you may be able to make post-tax contributions beyond the pretax and Roth contribution limits, however the total contributions cannot exceed your annual employee compensation.Â
Investment Options and Flexibility
Investing in your employerâs 401(k) plan makes it easy to set aside money for retirement. Most companies will help you set up automated deductions that come right out of your paycheck and go directly into the company sponsored retirement plan. If your employer offers a contribution matching program,it is advantageous to invest through the 401(k) plan because you are getting additional money added to your retirement account by your employer. That helps you save at a faster rate and enjoy the benefit of compound growth over time.Â
While the process of investing in your employerâs 401(k) program is convenient, you are limited to the investments that are offered by the plan. Most employer-sponsored 401(k) plans offer employees limited selections of investments, which are intended to be suitable for all plan participants. The investments range from long-term growth securities to assets focused on short-term stability:
- Mutual funds
- Growth stocks
- Value stocks
- Bonds
- Stocksâit is somewhat rare that individual stocks are offered in a 401(k) plan; however, some publicly traded companies offer their stock to employees
- Money market funds
Factors to Consider Choosing Between a Roth IRA and 401(k)
There are benefits to both types of retirement savings plans. Participating in your employerâs 401(k) may allow you to boost your retirement savings by taking advantage of your employerâs matching contribution program. It also gives you the benefit of using pre-tax money to invest and enjoying tax-deferred growth on your investments. A Roth IRA can also be very beneficial. It can provide years of tax-free growth of your investments, although you do not get an up-front tax deduction because you are investing using after-tax dollars. If you expect your tax bracket during retirement to be higher than it is now, then a Roth IRA can be good for you. If you expect your bracket to be lower than it is now, then a traditional 401(k) is a sweet deal.
The Bottom Line
The key difference between a Roth IRA and a 401(k) is when you get your main tax break. You must decide if it is more meaningful to you to get a tax break now in the form of an up-front tax deduction for your contribution. If so, then contribute to a 401(k) with pre-tax money and pay tax during retirement. On the other hand, if it is more advantageous to invest using after-tax dollars now and enjoy years of tax-free growth plus tax-free withdrawals, use a Roth IRA. Another major consideration is whether you want to pass the investment along to your heirs. If so, a Roth is a better tool. The retirement vehicle that is best for you will depend on your specific financial situation. You may find it beneficial to consult with a tax professional or financial advisor to help you weigh your options and put a plan in place.