403(b) vs. 401(k): What’s the Difference?

403(b) vs. 401(k): Side-by-Side

	403(b)	401(k)
Who offers it	Public schools, 501(c)(3) hospitals, religious organizations, nonprofits, government employers	Most for-profit private-sector employers
Tax options	Traditional (pre-tax) or Roth (after-tax)	Traditional, Roth, and sometimes after-tax contributions
Investment menu	Narrower — annuity contracts and custodial mutual fund accounts. Often heavy on annuities.	Broader — mutual funds, ETFs, sometimes individual stocks/bonds via a brokerage window
Employer match	Less common — offering one can trigger nondiscrimination testing	Common — key recruiting and retention tool
Nondiscrimination testing	Most plans are exempt	Required — tests that the plan doesn’t favor highly paid employees
Profit-sharing	Not allowed (employers can make non-elective discretionary contributions)	Allowed — discretionary profit-sharing contributions
Long-service catch-up	Unique to 403(b): +$3,000/yr after 15 years with a qualifying employer ($15K lifetime cap)	Not available

Neither plan is inherently better. What matters most: whether your employer matches, the quality of investment options, and whether you contribute consistently.

Ever opened a benefits packet and wondered why your retirement plan is labeled “403(b)” while others speak of a “401(k)”? You’re not alone.

At first glance, the two plans appear almost identical: helping you save for retirement via tax-advantaged contributions and employer-sponsored investment options. The confusion lies in understanding why your employer offers one instead of the other and what that means for your long-term savings.

Turns out, neither plan is inherently better than the other—the type you have simply reflecting the type of organization you work for and how the plan is structured behind the scenes. What does matter is knowing how each plan works, corresponding benefits, and how the rules differ. A little clarity can help you make smarter decisions about contributing, investing, and taking full advantage of the plan you’re offered.

Key Takeaways

• Your plan type is related to your employer; 403(b)s are for nonprofits and the public sector (schools, religious, charitable organizations, and many hospitals), while 401(k)s are standard for for-profit employees.
• Both plans share the same 2026 IRS contribution limits: $24,500 base and $8,000 catch-up at 50+ plus a $11,250 super catch-up for ages 60–63 (if your plan allows it).
• 401(k)s typically offer broader investment menus (mutual funds, ETFs, and sometimes brokerage windows) and more frequent employer matching; 403(b)s lean toward annuities and narrower mutual fund options and match less often to avoid nondiscrimination testing.
• 403(b)s have one perk 401(k)s don't: a long-service catch-up of an extra $3,000/year (up to a $15,000 lifetime cap) for employees with 15+ years at the same qualifying nonprofit.
• Neither plan is inherently better than the other; what matters is whether your employer matches, investment option quality and cost, and how consistently you contribute.

Quick reference

Which plan do you probably have?

403(b)

Public & nonprofit employers

• Public schools and universities
• 501(c)(3) hospitals and health systems
• Religious institutions
• Charitable and nonprofit organizations
• State and local government

401(k)

Private & for-profit employers

• Corporations of all sizes
• For-profit health systems
• Private medical and dental practices
• Small businesses and partnerships
• Most startups

What is a 403(b) plan?

Many people don’t encounter a 403(b) until they start working in education or the nonprofit sector and realize their employer doesn’t offer a 401(k). A 403(b) is simply another tax-advantaged retirement plan designed for employees of tax-exempt and public-sector organizations including:

• Public schools and universities

• 501(c)(3) hospitals and healthcare systems*

• Religious institutions

• Charitable and nonprofit organizations

*Many large nonprofit hospitals and health systems fall into this category, which is why some healthcare workers have a 403(b) while others (especially those in for-profit systems or private practices) use a 401(k).

As with other employer-sponsored retirement plans, a 403(b) allows employees to contribute a portion of their paycheck toward retirement. Contributions can be made in the following ways…

• Pre-tax (traditional 403(b)): Lowers your taxable income now, but you’ll pay taxes upon withdrawing the money in retirement.

• After-tax (Roth 403(b)): You’ll pay taxes immediately, but withdrawals in retirement are tax-free if you follow the rules.

403(b) investment options

By law, 403(b)s can only be invested in some types of accounts with narrower investment choices than what you’ll typically see for a 401(k). Specific account types include…

Annuity contracts

• Fixed annuities: These investments give you a guaranteed, steady rate of return (earning the same amount of interest every year).

• Variable annuities: These investments—more like stock market investments with returns that fluctuate depending on performance—are common since insurance companies historically administered 403(b) plans.

Custodial accounts invested in mutual funds

These accounts allow you to invest in mutual funds, a mix of investments put together by experts. Common types include:

• stock funds

• bond funds

• balanced or target-date funds

• real estate funds

• index funds (if your plan offers them)

Some 403(b) plans also offer options to help protect your original investment (“principal”), such as fixed-rate accounts or capital preservation funds. Available choices ultimately depend on your employer’s plan provider.

What is a 401(k) plan?

A 401(k) is the most common workplace retirement plan in the U.S. and typically offered by for-profit employers.

Availability and eligibility

In many workplaces, employees can begin contributing to a 401(k) shortly after they’re hired—whether immediately or after a brief waiting period—with each employer setting its own rules. Some have requirements when it comes to age (typically 21) or the need to work for a specific period of time (e.g., a year) in order to participate.

If your employer offers to match your contributions (essentially free money), those matching funds might kick in later than your own contributions. The good news? Most companies let you join the plan sooner rather than later—especially when it comes to your own contributions, with the exact details depending on your employer’s specific plan.

401(k) plan tax treatment

401(k)s give you three ways to save for retirement:

• Traditional (pre-tax) contributions: In this case, the money you put in is taken out of your paycheck before taxes are applied—so you pay less in taxes now and more later, when you take the money out in retirement.

• Roth contributions: With this option, you pay taxes on your money before it goes into your 401(k) and won’t owe any more upon making withdrawals in retirement (provided you follow corresponding rules).

• After-tax contributions: A hybrid between traditional and Roth contributions available in some employer-sponsored plans, these dictate you contribute after-tax dollars and in turn not owe taxes on original contributions upon withdrawing them—though any investment earnings on these accounts are taxed at this time. This option also allows you to save more in tax-advantaged accounts beyond standard annual 401(k) limits, providing an opportunity to maximize your retirement savings.

Investment flexibility

A 401(k) usually gives you more ways to invest your money than a 403(b) does. While each employer’s plan is unique, most 401(k)s commonly offer the following options:

• Mutual funds: Collections of many different stocks or bonds, examples include stock, bond, index (striving to match the market), balanced (mix of stocks and bonds), and target-date (adjusting over time as you approach retirement) funds.

• Money market or stable-value funds: These lower-risk choices focus on keeping your original money safe while earning a small amount of interest.

• ETFs (exchange-traded funds): Some plans let you invest in ETFs, which are just like mutual funds but traded on the stock market. Not every plan includes them.

• Brokerage windows (offered in some plans): This special feature allows you to select individual stocks or bonds and gives you access to even more investment choices beyond basic plan options.

This plethora of investment choices is a primary feature setting 401(k)s apart from 403(b)s, the former often managed by big investment companies; you thus enjoy access to newer, lower-cost funds, especially index and target-date funds that can help grow your money over time.

What are key differences between 403(b) and 401(k) plans?

At first glance, 403(b) and 401(k) retirement plans often look almost identical and (for many people) work much in the same way. If you’re new to retirement savings or not deeply familiar with the rules, however, a few key differences can indeed impact your savings and options. Let’s break down these disparities in simple, easy-to-understand terms…

1. Nondiscrimination testing

Unlike 401(k) plans, most 403(b) plans don’t need to pass special government tests ensuring benefits are fair for everyone (not just higher-paid employees). This process—"nondiscrimination testing”—checks to make sure the plan doesn’t favor executives over regular staff.

2. Employer matching contributions

Many 403(b) plans don’t offer an employer match since this can trigger nondiscrimination testing, with some employers choosing to avoid this altogether.

3. Profit-sharing contributions

In a 401(k), employers can make profit-sharing contributions—discretionary amounts they choose to add to employee accounts, often varying year to year based on company performance. A 403(b) doesn't use "profit-sharing" in the formal sense, but nonprofit employers can still make discretionary non-elective contributions to employee accounts—serving a similar purpose of rewarding and retaining staff. The mechanics and terminology differ, but in both cases the employer is adding money beyond any match.

4. Safe harbor status

A "safe harbor" plan is one where the employer commits to a set contribution—either a match (for employees who contribute) or a flat percentage paid to everyone—in exchange for automatically passing the IRS's nondiscrimination tests. Both 401(k) and 403(b) plans can use this design, but 401(k)s rely on it more often, since many 403(b) sponsors (like government and church employers) are already exempt from those tests.

5. Investment options

Types of investments you can choose from differ greatly between 403(b) and 401(k) plans. While the former usually offer fewer choices and emphasize annuities (insurance products for long-term savings), the latter typically give you access to a wider range of investments such as mutual funds and sometimes even individual stocks and bonds.

401(k) and 403(b) contribution limits

2026 Contribution Limits: 401(k) and 403(b)

Stackable tiers based on your age and tenure.

1

Standard limit (everyone)

$24,500/year

Maximum employee contribution to a 401(k) or 403(b) in 2026.

2

Catch-up — ages 50+

+$8,000/year — up to $32,500

Extra contribution allowed once you turn 50, on top of the standard limit.

3

Super catch-up — ages 60–63

+$11,250/year — up to $35,750

Replaces the regular catch-up during ages 60–63. Plan must allow it — check with HR.

+

403(b) only — long-service

+$3,000/year ($15,000 lifetime cap)

If you’ve worked for a qualifying nonprofit 15+ years, you can stack this on top of the standard limit. Not available on 401(k)s.

Watch out

If you have both a 401(k) and a 403(b), the standard $24,500 limit is combined, not doubled. The 403(b) long-service catch-up is the one exception.

Wondering how much you can save for retirement each year? Both 401(k) and 403(b) plans follow the same rules set by the IRS, making it easier to remember the limits.

Annual contribution limits (2026)

• You can contribute up to $24,500 to your workplace retirement plan in 2026.

• This is a combined limit, meaning it applies across all 401(k) and 403(b) plans you participate in (and is not per plan); having both doesn’t double your limit.

Catch-up contributions for older savers

If you’re age 50+, the IRS allows you to save even more to help boost your retirement nest egg.

• Age 50+: You can contribute an extra $8,000 on top of the standard $24,500 limit in 2026.

• Ages 60-63: Some plans allow an additional $11,250 catch-up contribution during these years. Check your plan’s rules to see if you qualify since not every employer offers this.

Special 403(b) catch-up for long-term employees

Here’s something special just for 403(b) plans:

• If you’ve worked for a qualifying nonprofit for 15 years or more, you may be able to contribute an extra $3,000 per year (with a $15,000 lifetime cap).

• Since these rules can get a bit technical, it’s a good idea to ask your HR department or plan administrator to make sure you’re eligible.

Employer matching: how it works (and why it matters)

Not every workplace benefit grabs your attention, but employer matching is one you don’t want to miss—especially if you’re new to saving for retirement.

Here’s how it works: when you put money into your retirement account, your employer might also add money—sometimes matching what you contribute up to a specific percentage of your salary. Matching contributions are like free money for your future and help your retirement savings grow much more quickly than saving alone. Some 403(b) retirement plans also offer employer matching, but it’s less common than with 401(k) plans (as mentioned previously) and employer-dependent.

Why employer matches are more common with 401(k)s

Many companies offer 401(k) matching as a way to attract and keep talented employees: a benefit helping both the employee and employer. With 403(b) plans, however, offering a match can introduce additional administrative requirements (like the aforementioned nondiscrimination testing) and dissuade nonprofit employers from doing this so they can avoid the corresponding complexity.

What if your plan doesn’t offer a match?

Even if your employer doesn’t match your contributions, adding money to a 401(k) or 403(b) is still a smart way to save. These accounts offer special tax benefits, make saving automatic, and let your money grow over time—advantages difficult to find elsewhere. If your employer doesn’t offer a match, focus on:

• Contributing consistently

• Choosing low-cost investments

• Increasing your contribution rate over time as your income grows

A lack of matching doesn’t eliminate the value of a plan; it just means your strategy may rely more heavily on steady, long-term saving.

403(b) vs. 401(k): Which plan is better?

Your employer ultimately decides which plan you have based on whether it’s a nonprofit or for-profit organization. That said, plans aren’t identical, and knowing the differences can help you make the most of the one you have. Rather than a specific plan representing something “better” than others, each one tends to come with tradeoffs as follows…

Where a 403(b) may have an edge

403(b) plans are designed for nonprofit and public-sector employers. Depending on how the plan is structured, they may offer:

• Access to the 403(b) long-service catch-up, allowing some long-term employees to contribute more than the standard limit

• Simpler plan design in some workplaces

• Investment options that lean more conservative, which some savers prefer

The primary limitation in this case is that employer matches are less common, with narrower investment menus than 401(k)s depending on the provider.

Where a 401(k) may have an edge

401(k) plans are standard in the private sector and often include:

• More frequent employer matching, which can significantly increase retirement savings

• Broader investment menus, including low-cost index funds and sometimes brokerage access

• More flexibility for employees who want hands-on control over their investments

The tradeoff is that 401(k)s don’t include the long-service catch-up contribution available with some 403(b) plans.

The real answer

Neither plan is inherently better. A strong 403(b) can outperform a weak 401(k) and vice versa. What matters more than the plan name is:

• whether your employer offers a match

• the quality and cost of investment options

• how consistently you contribute

In sum: 403(b) vs. 401(k) plans

As you can see, both 403(b) and 401(k) plans offer valuable opportunities for retirement savings—each with its own advantages and eligibility requirements. Understanding key differences such as investment options and employer match structures can help you choose the plan that best fits your financial goals and employment situation. If you'd like a fuller refresher on the plan itself, see our guide to how a 401(k) works.

Have questions about 401(k) or 403(b) plans? Schedule a FREE discovery call with one of our CFP® professionals to get them answered.

Reviewed for accuracy

Paul Muller, AEP®, CFP®

Founder and Relationship Manager at Vision Retirement, with 30+ years in the financial industry.

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FAQs

• Can I have both a 403(b) and 401(k)?

  Yes, you can have both if you work for two different employers (e.g., a nonprofit and private company) or if you change jobs mid-year.

  Important: Your employee contribution limit is shared across both plans. For 2026, you can contribute a total of $24,500 combined (not $24,500 to each).

  If you’re age 50 or older, the standard catch-up limit ($8,000) also applies across both plans together—the sole exception being the 403(b) long-service catch-up, which may allow eligible long-term nonprofit employees to contribute more.

• Can I roll over a 403(b) into my 401(k)?

  Sometimes. If your new employer’s plan allows it, you may be able to roll a 403(b) into a 401(k) when changing jobs. Another common option is rolling the account into an IRA.

• Do both 401(k) and 403(b) plans allow loans?

  In many cases, yes. Both 401(k)s and 403(b)s may allow you to borrow from your account, depending on your plan’s rules. Just remember: if you leave your job, the remaining loan balance is sometimes due immediately.

• Are withdrawals taxed the same way for both plans?

  Generally, yes. Traditional 401(k) and 403(b) withdrawals are taxed as ordinary income, while Roth withdrawals are sometimes tax-free if you meet age and holding requirements.

Disclosures:
This document is a summary only and is not intended to provide specific advice or recommendations for any individual or business.