Difference Between 401k and 403b: What You Need to Know

If you're a worker in the public sector, you may be eligible for a 403b plan, but did you know that it's not the same as a 401k plan?

The main difference between the two is the type of employer that offers the plan. A 403b plan is typically offered by tax-exempt organizations, such as schools, hospitals, and non-profit organizations, while a 401k plan is offered by for-profit companies.

Both plans allow employees to contribute a portion of their paycheck to a retirement account, but the 403b plan has some unique features, such as the ability to invest in annuities and mutual funds.

The contribution limits for 403b plans are higher than those for 401k plans, with a maximum annual contribution limit of $19,500 in 2022, plus an additional $6,500 if you're 50 or older.

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A 401(k) and 403(b) are both workplace retirement plans offered by employers to help employees save for their future. A 403(b) is specifically designed for employees of tax-exempt organizations such as schools, religious institutions, and healthcare providers.

Both plans are tax-advantaged, meaning you won't owe taxes on the money until you withdraw it, unless you're making a Roth deferral. Your employer may also contribute to your plan, either by adding a set amount or matching some or all of your contributions.

A 401(k) is offered by private sector companies, while a 403(b) is for government and non-profit employees. The main difference between the two plans is the employer, not the benefits.

The annual contribution limit for both plans is the same, currently set at $23,500 in 2025. If you're 50 or older, you can contribute an additional $7,500 as a catch-up contribution.

Here's a quick comparison of the two plans:

Both plans have some restrictions, such as a 10% early withdrawal penalty if you take the money before age 59½, unless you leave your employer in the year you turn 55 or after age 55.

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401(k) plans are offered by private-sector employers, while 403(b) plans are for non-profit and government employees.

One of the main differences between the two plans is who offers them. 401(k) plans are typically offered by for-profit companies, whereas 403(b) plans are offered by non-profit organizations, educational institutions, and certain public entities.

Employer matching is also a key difference. While both plans can offer employer matches, many 403(b) plan employers do not offer them, preferring to maintain their ERISA exemption.

Here are some of the key differences between 401(k) and 403(b) plans:

The contribution limits for 401(k) and 403(b) plans are set by the IRS, with the same yearly limit of $23,000 for the 2024 tax year and $23,500 for 2025.

People over age 50 can contribute an additional $7,500 in both years. This catch-up contribution limit applies to both 401(k) and 403(b) plans.

A higher catch-up contribution limit applies for employees who are 60, 61, 62, and 63, which is $11,250 in 2025.

You can contribute to both a 401(k) and a 403(b) plan if your employer offers both, and you'll still be subject to the overall limit on your combined contributions.

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Catch-up contributions are allowed for participants aged 50 and above, enabling you to save more aggressively as you approach retirement.

The 403(b) plan may have a unique catch-up contribution provision for long-term employees, allowing them to contribute even more to their retirement savings account.

Employer-matching contributions are a key feature in many retirement plans, and 401(k) plans typically offer company matching, while 403(b) plans can sometimes be quite generous in their matching contributions.

The annual limits for contributions to 403(b) and 401(k) plans are the same, with elective deferrals, safe harbor, matching, and nonelective contributions subject to identical annual limits.

Here are the annual limits for 2025:

Note that 403(b) plans can allow employees who have completed at least 15 years of service with the organization to make a special catch-up contribution, with a limit that's the lesser of $23,500 or 100% of the participant's compensation.

You have more investment options in a 401(k) plan than in a 403(b) plan. A 401(k) plan may offer stocks, bonds, mutual funds, ETFs, and even company-specific stock options.

In contrast, 403(b) plans typically only offer annuities and mutual funds, which may come with higher fees and expenses. This limited flexibility can affect your ability to diversify your investments and potentially minimize the effects of volatility on your retirement savings.

Here's a comparison of the investment options available in 401(k) and 403(b) plans:

Target date funds and asset allocation funds are also available in 401(k) plans, offering a convenient and diversified investment option.

If you're eligible for a 401(k) or 403(b), follow these steps to get invested. Check whether you're automatically enrolled, as some employers sign up new employees at a relatively low contribution rate without you having to take additional steps.

Consider contributing at least as much as your employer will match so you don't leave money on the table. Then work up to saving at least 15% of your pre-tax income, including any employer match, for retirement.

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The financial firm that holds your retirement account may offer the option of working with a financial professional who could help you choose which investments to buy and even monitor their success and make changes. Look into costs at that firm first.

Employers tend to simplify investment options in 401(k)s and 403(b)s by offering target date funds, among other investments.

If you're eligible for a 401(k) or 403(b), you'll have access to various investment options to choose from.

A 401(k) plan may offer a range of investment options, including stocks, bonds, mutual funds, exchange-traded funds (ETFs), and even company-specific stock options in some cases.

Investment options in a 401(k) plan can be tailored to your risk tolerance and financial goals, allowing for a well-diversified strategy to protect your savings from market fluctuations.

Target date funds are a type of investment option available in some 401(k) plans, which are ready-made portfolios based on a timed end goal, such as retirement in a certain number of years.

Asset allocation funds are another type of investment option that can provide diversification across different asset classes, seeking to minimize overall risk.

In contrast, 403(b) plans often have more limited investment options, commonly confined to annuities and mutual funds.

These options may have the potential to provide a guaranteed income stream during retirement, but they might entail higher fees and expenses.

Here's a brief comparison of investment options in 401(k) and 403(b) plans:

Ultimately, understanding your investment options is key to making informed decisions about your retirement savings.

Employer and tax aspects play a significant role in the difference between 401(k) and 403(b) plans. Many 401(k) plans offer employer matches, which can greatly boost retirement savings.

Some 403(b) plans do provide employer matches, but they may be less common or less substantial. It's a rare situation to find two job offers with different employer match scenarios, but it's worth considering if you're evaluating job options.

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Legal differences between 401(k) and 403(b) plans are quite significant, and one key difference is that 403(b) plans may not have to comply with all of the regulations in the Employee Retirement Income Security Act (ERISA). This is because governmental employers, non-electing churches, and certain other organizations are exempt from following ERISA requirements.

Unlike 401(k) plans, 403(b)s are typically exempt from nondiscrimination testing, which is designed to prevent management-level or "highly compensated" employees from receiving a disproportionate amount of benefits. This testing is done annually and is a requirement for 401(k) plans.

The reason for these exemptions is a long-standing Department of Labor regulation that states 403(b) plans are not technically labeled as employer-sponsored as long as the employer does not fund contributions. However, if an employer does make contributions to employee 403(b) accounts, they are subject to the same ERISA guidelines and reporting requirements as those who offer 401(k) plans.

Investment funds in 403(b) plans must qualify as a registered investment company under the 1940 Securities and Exchange Act to be included, whereas this is not the case for 401(k) investment options. This can impact the types of investments available to employees in each type of plan.

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Employer matching contributions can greatly impact your retirement savings. Many for-profit employers offer a match, often up to a certain percentage of your salary.

In contrast, 403(b) plans may have employer contributions that are less common or less substantial. Nevertheless, even a modest employer match can still be a valuable addition to your retirement savings account.

Employer-matching contributions are a key feature in many retirement plans, and in 401(k) plans, company matching is prevalent and often a significant part of the retirement benefits package. Employers typically match a percentage of the employee’s contributions up to a specific limit, enhancing the employee’s total retirement savings.

Some 403(b) plans can be quite generous with their matching contributions, as benefits are valued as part of a nonprofit’s overall compensation package. However, this generosity is not as common as in 401(k) plans.

Deciding whether to offer a company match is a significant decision for employers, and it's ideal to discuss these options with your TPA and financial advisor to ensure the best outcome for both the organization and its employees.

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