The Difference Between a 401(k) and 403(b)

Infographic of two people reading about different types of investments

When it comes to retirement planning, it’s important to understand your options and pick the best plan for your financial future. Two popular options in the United States are the 401(k) and the 403(b) retirement plans. While they share many similarities, there are key differences between these two plans that can affect your savings and investment choices. In this blog post, we will dive into the details of 401(k) and 403(b) plans, explore their similarities and differences, and help you determine which type of retirement plan is right for you.

What is ERISA?

Before we get to the two different retirement plans we are talking about today, here is a brief history of how it all got started.

The Employee Retirement Income Security Act (ERISA) is a federal law enacted in 1974 that sets minimum standards for pension plans and other employee benefit plans in private industry in the United States. ERISA was established to protect the retirement assets of American workers by implementing rules and regulations that employers and plan administrators must follow to ensure the proper management of these plans.

ERISA covers various types of employee benefit plans, including pension plans, 401(k) plans, profit-sharing plans, and some welfare benefit plans such as health insurance, disability benefits, and life insurance.

The main objectives of ERISA are to:

  • Set standards for reporting and disclosure. ERISA requires plan administrators to provide participants with information about their plans, such as plan features, funding, and financial status. This information is usually communicated through documents like Summary Plan Descriptions (SPDs), Summary of Material Modifications (SMMs), and annual reports (Form 5500).
  • Establish fiduciary responsibilities. ERISA imposes strict fiduciary duties on those who manage and control plan assets. Fiduciaries must act solely in the best interest of plan participants and any beneficiaries, with the utmost care, skill, prudence, and diligence.
  • Provide a grievance and appeals process. ERISA mandates that employee benefit plans have a fair and reasonable process for participants to file claims for benefits, as well as an appeals process for denied claims.
  • Guarantee payment of certain benefits. The Pension Benefit Guaranty Corporation (PBGC), a federal agency, was created under ERISA to insure certain defined benefit pension plans. If a covered plan fails, the PBGC steps in to pay pension benefits up to a certain maximum limit.

It’s important to note that ERISA does not require employers to establish pension or benefit plans, nor does it dictate the specific benefits that must be provided. Instead, it regulates the operation and management of these plans to ensure that participants’ rights and benefits are protected.

While ERISA sets the minimum standards for private-sector employee benefit plans, some types of plans are exempt, such as those sponsored by government entities, churches, and certain other organizations.

What is a 401(k) Plan?

A 401(k) plan is a retirement savings plan with tax benefits provided by private-sector employers in the United States. Named after section 401(k) of the Internal Revenue Code, this plan allows employees to contribute a portion of their pre-tax salary to a retirement account. Some employers also offer matching contributions, further enhancing an employee’s retirement savings.

Key Features of 401(k) Plans:

Here are a few key features of a 401(k) plan:

  • Pre-tax contributions: Employees can contribute a portion of their pre-tax salary, reducing their taxable income and potentially lowering their current tax liability.
  • Employer match: Many employers offer matching employee contributions up to an allotted percentage of the employee’s salary.
  • Investment options: 401(k) plans typically offer various investment options, such as mutual funds, index funds, and target-date funds.
  • Tax-deferred growth: Earnings and gains within the 401(k) grow tax-deferred until withdrawal, allowing for potentially greater growth over time.
  • Rollover options: Employees can typically roll over their 401(k) balance to another 401(k) or an Individual Retirement Account (IRA) when changing jobs or retiring.

What is a 403(b) Plan?

A 403(b) plan, also referred to as a Tax-Sheltered Annuity (TSA) plan, is a retirement savings option for employees working at specific tax-exempt institutions such as public schools, colleges, universities, and select non-profit or religious organizations. Similarly to a 401(k) plan, a 403(b) plan allows employees to contribute pre-tax income to a retirement account and enjoy tax-deferred growth on their investments.

Key Features of 403(b) Plans:

  • Pre-tax contributions: Like 401(k) plans, employees can contribute pre-tax income, which lowers their taxable income.
  • Employer match: Some employers may offer matching contributions, though this is less common in 403(b) plans compared to 401(k) plans. Therefore, it is important to ask about employer contributions.
  • Investment options: 403(b) plans typically offer fewer investment options than 401(k) plans, often focusing on annuity contracts and mutual funds.
  • Tax-deferred growth: Earnings and gains within the 403(b) grow tax-deferred until withdrawal.
  • Rollover options: Employees can roll over their 403(b) balance to another 403(b), a 401(k), or an IRA when changing jobs or retiring.

Comparing 401(k) and 403(b) Plans: Similarities and Differences

Infographic comparing 401(k) and 403(b)

While 401(k) and 403(b) plans share many similarities, there are some key differences to consider when choosing the right plan for your retirement needs.

Similarities:

  • Tax advantages: Both plans allow for pre-tax contributions and tax-deferred growth on investments.
  • Contribution limits: Both plans have the same annual contribution limits set by the IRS. For 2023, the limit is $22,500 for individuals under 50 and $30,000 for people 50 and older, including catch-up contributions.
  • Withdrawal rules: Both plans generally require participants to be at least 59½ years old to make penalty-free withdrawals. Withdrawals made before this age may be subject to a 10% early withdrawal penalty in addition to income taxes.
  • Required Minimum Distributions (RMDs): Both plans mandate that participants begin taking RMDs at age 72, which are calculated based on life expectancy and account balance.

Differences:

  • Eligibility: 401(k) plans are available to employees of private-sector companies or for-profit companies, while 403(b) plans are designed for employees of public schools, colleges, universities, religious organizations and certain non-profit organizations.
  • Employer matching: While both plans may offer employer matching contributions, they are more common in 401(k) plans than in 403(b) plans.
  • Investment options: 401(k) plans typically offer a wider range of investment options compared to 403(b) plans, which often have a more limited selection.
  • Plan administration: 403(b) plans are generally less complex and less expensive to administer than 401(k) plans, which may result in lower administrative fees for participants.

Choosing the Right Plan for You

When deciding between a 401(k) and a 403(b) plan, consider the following factors. 

Your Employer’s Offerings

Your employer’s retirement plan offerings will largely determine which plan you can participate in. If you work for a private-sector company, you’ll likely have access to a 401(k) plan. If you work for a public school, college, university, or certain non-profit organizations, you’ll likely be eligible for a 403(b) plan.

Employer Match

One of the key benefits of participating in a retirement plan is the potential for employer-matching contributions. If your employer offers a match, it’s essential to contribute at least enough to take full advantage of this “free money.” The presence or absence of an employer match may influence your decision to participate in a 401(k) or 403(b) plan.

Investment Options

Evaluate the investment options available within each plan to determine which best aligns with your financial goals and risk tolerance. If you prefer a wider range of investment options, a 401(k) plan may be more suitable. However, if you work for an organization that offers a 403(b) plan and are comfortable with the available investments, this plan can still provide a solid foundation for your retirement savings.

Fees

Pay close attention to the fees associated with each plan, as they can significantly impact your overall investment returns. Both 401(k) and 403(b) plans may charge administrative, investment management, and other fees. Compare the fees of each plan to ensure you’re making the most cost-effective choice.

401(k) FAQS

Here are some frequently asked questions (FAQs) about 401(k) plans:

How do I enroll in a 401(k) plan?

To enroll in a 401(k) plan, you typically need to be employed by a company that offers such a plan. You’ll receive information about the plan, and you’ll need to complete the necessary forms or online registration process to start contributing to the plan.

What is an employer match?

An employer match is a contribution made by your employer to your 401(k) plan, usually based on a percentage of your own contributions. Employer matches vary, but a common formula is a 100% match on the first 3-6% of your salary that you contribute to the plan.

What are the investment options in a 401(k) plan?

Investment options in a 401(k) plan typically include a variety of mutual funds, index funds, and target-date funds. The specific options available depend on the plan offered by your employer.

When can I take money from my 401(k) plan?

Generally, you can withdraw money from your 401(k) plan without penalty once you reach the age of 59½. Withdrawals made before this age may be subject to a 10% early withdrawal penalty in addition to income taxes.

Are there any exceptions to the early withdrawal penalty?

Yes, there are some exceptions to the early withdrawal penalty, such as:

  • Disability
  • Death
  • Certain medical expenses exceeding a specific percentage of your adjusted gross income
  • First-time home purchase (up to a $ 10,000 lifetime limit)
  • Qualified higher education expenses
  • Substantially equal periodic payments (SEPP) under IRS Rule 72(t)

Can I borrow money from my 401(k) plan?

Certain 401(k) plans allow participants to take loans from their accounts, subject to certain rules and limitations. Generally, you can borrow up to 50% of your vested account balance or $50,000, whichever is less. Repayment terms usually range from 1 to 5 years, with interest.

Where does my money go if I get a new job?

If you change jobs, you generally have several options for your 401(k) plan:

  • Keep the money in your former employer’s plan (if allowed)
  • Roll over the balance to your new employer’s 401(k) plan (if permitted)
  • Roll over the balance to an IRA (Individual Retirement Account) 
  • Cash-out the balance, subject to taxes and potential penalties

FAQS of 403(b)

Here are some frequently asked questions (FAQs) about 403(b) plans:

How do I enroll in a 403(b) plan?

To enroll in a 403(b) plan, you need to be employed by an organization that offers such a plan. You’ll receive information about the plan, and you’ll need to complete the necessary forms or online registration process to start contributing to the plan.

What is an employer match?

An employer match is a contribution made by your employer to your 403(b) plan, usually based on a percentage of your own contributions. Employer matches are less common in 403(b) plans compared to 401(k) plans, but some organizations may still offer them.

What are the investment options in a 403(b) plan?

Investment options in a 403(b) plan typically include annuity contracts and mutual funds. The specific options available depend on the plan offered by your employer.

When can I withdraw money from my 403(b) plan?

Generally, you can withdraw money from your 403(b) plan without penalty once you reach the age of 59½. Withdrawals made before this age could be subject to a 10% early withdrawal penalty in addition to income taxes.

Are there any exceptions to the early withdrawal penalty?

Yes, similar to a 401(k), there are some exceptions to the early withdrawal penalty, such as:

  • Disability
  • Death
  • Certain medical expenses exceeding a specific percentage of your adjusted gross income
  • First-time home purchase (up to a $ 10,000 lifetime limit)
  • Qualified higher education expenses
  • Substantially equal periodic payments (SEPP) under IRS Rule 72(t)

Can I borrow any money from my 403(b) plan?

Some 403(b) plans allow participants to take loans from their accounts, subject to certain rules and limitations. Generally, you can borrow up to 50% of your vested account balance or $50,000, whichever is less. Repayment terms usually range from 1 to 5 years, with interest.

What happens to my 403(b) plan if I change jobs?

If you change jobs, you generally have a few options for your 403(b) plan:

  • Leave the balance in your former employer’s plan (if allowed)
  • Roll over the balance to your new employer’s 403(b) plan (if permitted)
  • Roll over the balance to a 401(k) plan or an Individual Retirement Account (IRA)
  • Cash out the balance, subject to taxes and potential penalties

Can you roll over a 403(b) into a 401(k)?

Yes, you can generally roll over a 403(b) plan into a 401(k) plan, provided that your new employer’s 401(k) plan accepts rollovers from 403(b) plans. Rolling over your 403(b) plan into a 401(k) plan can be a convenient option if you’re changing jobs and want to consolidate your retirement savings.

To initiate the rollover, you’ll need to contact the plan administrators of both your 403(b) and 401(k) plans to confirm that the rollover is allowed and to obtain the necessary forms or instructions. You should also verify whether the rollover will be a direct rollover (funds are transferred directly between plan administrators) or an indirect rollover (funds are distributed to you, and you have 60 days to deposit them into the new plan). A direct rollover is generally preferable, as it avoids the risk of taxes and penalties associated with an indirect rollover.

Keep in mind that rolling over a 403(b) to a 401(k) may result in different investment options, fees, and plan features. It’s important to compare the two plans and consult a financial advisor to ensure that the rollover is in your best interest.

Also, while these FAQs provide a general overview, specific details about your 403(b) plan will depend on the plan offered by your employer. It is always best to talk to a financial planner or advisor for insight on any specific questions you may have.


The bottom line in the decision between a 401(k) and a 403(b) plan will depend on your unique circumstances, such as your employer’s offerings, investment preferences, and financial goals.

Both individual and employer-sponsored retirement plans offer valuable tax advantages and can serve as a strong foundation for your retirement savings strategy. By understanding the similarities and differences between these two plans, you can make informed decisions about which plan is best for your financial future.

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