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

A 401(k) and a 403(b) can look almost identical from an employee's seat.

Both can take contributions directly from your paycheck. Both can offer traditional pre-tax and Roth contributions. Both can include employer contributions, loans and hardship withdrawals. And in 2026, both generally share the same $24,500 employee elective-deferral limit.

The biggest difference is who sponsors the plan.

401(k)s are commonly offered by private-sector employers. 403(b)s are designed for eligible tax-exempt and public-education employers, including many schools, universities, hospitals and nonprofit organizations.

The label matters less than the actual plan design.

Quick answer:** A 401(k) and 403(b) have the same basic 2026 employee contribution limit of $24,500 and the same standard age-50 catch-up of $8,000. A 403(b) can also have a special 15-years-of-service catch-up for certain long-tenured employees. The better plan is usually the one with stronger employer contributions, lower costs, good investments and fair rules—not the one with the preferred tax-code number.

401(k) vs. 403(b) at a glance

Those similarities are why employees should compare the actual benefit rather than assuming a 403(b) is a completely different kind of retirement account.

Who can have a 401(k)?

401(k) plans are qualified defined contribution plans commonly sponsored by private-sector employers.

A traditional 401(k) can allow employees to defer compensation and can include employer matching or nonelective contributions. Plan design, eligibility, vesting and investments vary by employer.

If you work for a corporation, private professional firm, retailer, manufacturer or technology company, the workplace salary-deferral plan is often a 401(k).

Who can have a 403(b)?

Only eligible employers can sponsor a 403(b).

The IRS identifies categories including:

• 501(c)(3) tax-exempt organizations
• Public education organizations
• Public school systems, state colleges and universities in qualifying circumstances
• Certain ministers and church-related organizations

The IRS provides more detail in its guide to eligible 403(b) sponsors ↗.

That is why 403(b)s are common in education, health care and the nonprofit sector.

The 2026 contribution limits are mostly the same

For 2026, the basic elective-deferral limit is $24,500 for both 401(k) and 403(b) plans.

For participants age 50 or older, plans can permit an additional $8,000 catch-up contribution.

For participants who turn 60, 61, 62 or 63 during 2026, the higher SECURE 2.0 catch-up limit is $11,250 instead.

The overall annual-additions limit is generally $72,000 for both plan types before catch-up contributions, subject to the applicable compensation rules.

See our 2026 401(k) contribution limits guide for examples of how the employee and employer limits interact.

The special 403(b) 15-year catch-up

This is one of the clearest technical differences.

Certain 403(b) participants with at least 15 years of service with the same qualifying organization may be eligible for an additional special catch-up if the plan permits it.

The maximum additional amount for a year is the least of:

1. $3,000
2. $15,000 reduced by prior use of the special catch-up
3. A formula based on $5,000 times years of service minus prior elective deferrals

The rule has a lifetime cap and service calculations that are easy to get wrong. The IRS explains the current formula in its 403(b) contribution-limit guidance ↗.

If both the 15-year catch-up and an age-based catch-up apply, the ordering rules matter.

This is not a benefit to estimate from memory. Ask the plan administrator to confirm eligibility and remaining lifetime special catch-up room.

What if you contribute to both a 401(k) and a 403(b)?

The regular employee elective-deferral limit is generally shared across 401(k) and 403(b) plans.

If you contribute $15,000 to a 401(k) early in 2026 and then change to an employer with a 403(b), you do not generally receive a fresh $24,500 limit.

You would normally have $9,500 of the basic elective-deferral limit remaining:

$24,500 − $15,000 = $9,500

This catches people who change between private-sector and nonprofit or education jobs midyear.

Payroll systems at two unrelated employers may not coordinate the limit for you.

A 457(b) is different

Many public-sector and nonprofit employees have access to a 403(b) and a 457(b).

A governmental 457(b) generally has a separate elective-deferral limit from a 401(k)/403(b), which can create much more tax-advantaged contribution room.

Do not assume “two workplace plans means one combined limit” without identifying the type of each plan.

The tax-code label matters a lot here.

Does a 403(b) have an employer match?

It can.

Some 403(b) employers match employee contributions. Others make nonelective contributions. Some provide no employer contribution.

The same is true for 401(k) plans.

Do not compare “401(k) versus 403(b)” as if one plan type has better employer contributions by definition. Compare the actual employer formula.

Our guide to the average 401(k) match explains how to turn a matching formula into maximum employer dollars. The method works just as well when evaluating an employer contribution in a 403(b).

Vesting can differ in either plan

Your own employee deferrals are yours. Employer contributions can have vesting provisions depending on the plan and the contribution type.

A generous employer contribution with a long vesting schedule can be less valuable to someone who expects to change jobs quickly.

If you are comparing a private company offering a 401(k) with a nonprofit offering a 403(b), add the vesting schedule to the compensation comparison.

Are 403(b) investments worse than 401(k) investments?

Not inherently.

403(b) plans have a historical association with annuity contracts, and some older plans contain expensive or complex products. But modern 403(b) plans can also offer excellent low-cost mutual funds and institutional investment options.

Likewise, a 401(k) can have a fantastic index-fund menu—or a mediocre lineup with high expense ratios.

The right questions are:

• Is there a low-cost diversified U.S. stock option?
• Is there a reasonable international option?
• Is there a diversified bond option?
• Is the target-date series reasonably priced and well constructed?
• Are annuity surrender charges or other restrictions involved?
• What fees are charged at the plan and investment level?

Judge the menu, not the tax-code label.

401(k) vs. 403(b) fees

Fees can be especially important in this comparison because the provider structures can differ.

A 403(b) built around individual annuity contracts can have a very different cost structure from a large 401(k) using collective investment trusts. But there are also low-cost 403(b)s and expensive 401(k)s.

Use our 401(k) fee guide to separate:

• Administrative expenses
• Investment expense ratios
• Individual service fees

If you are evaluating a 403(b) annuity, also check contract-specific charges such as surrender schedules, insurance costs and guarantees.

Loans and hardship withdrawals

Both 401(k) and 403(b) plans can permit participant loans under the federal loan rules.

Both can also permit hardship distributions if the plan includes the feature.

Neither feature is mandatory.

The IRS confirms that a 403(b) may allow loans and hardship distributions in its 403(b) plan FAQs ↗.

If emergency access matters to you, check the current plan document instead of assuming the plan type determines the answer.

401(k) vs. 403(b) after you leave the job

Both types of plans can generally offer rollover options after severance from employment.

You may be able to:

• Leave the money in the old plan, subject to plan rules
• Roll it to another eligible employer plan
• Roll it to an IRA
• Take a taxable distribution

The quality of the old plan should influence whether you move the money.

Read what happens to your 401(k) when you leave a job and our rollover-to-IRA guide. The decision framework applies to many 403(b) balances as well, although contract-specific restrictions can matter.

Which is better: a 401(k) or 403(b)?

Neither wins by default.

Here is a more useful comparison.

Employer A: 401(k)

• 3% match
• Immediate eligibility
• Immediate vesting
• Low-cost index funds
• $40 annual admin fee

Employer B: 403(b)

• 6% employer contribution
• One-year eligibility wait
• Five-year graded vesting
• Target-date funds at 0.35%
• No visible account fee

Which is better?

It depends on how long you plan to stay, how soon the employer contribution starts, how much you would contribute, and what investments you would use.

The “401(k)” or “403(b)” label tells you less than the actual terms.

How to compare two employers with different plan types

Use the same checklist for both.

1. Employer money

What is the maximum contribution? How much must you save to receive it?

2. Eligibility

When can you start contributing? When does employer money begin?

3. Vesting

When is the employer contribution fully yours?

4. Fees

What do the plan and the investments cost?

5. Investment quality

Can you build a diversified low-cost portfolio?

6. Roth option

Does the plan offer Roth salary deferrals?

7. Access features

Are loans, hardship distributions and installment withdrawals available?

8. Special catch-up rules

For a 403(b), could the 15-year catch-up apply?

Job-offer comparison:** Put the employers side by side and then layer in the current match, vesting, investment menu and eligibility terms. That gives you a much better answer than “401(k)s are better” or “403(b)s are better.”

Can 401(k) Plan Report include 403(b) plans?

The site's public filing database includes employer retirement-plan filings, and 403(b) plans can appear in that public record when they file Form 5500 under the applicable rules.

Coverage and filing requirements are not identical for every type of 403(b), particularly governmental and church-related arrangements.

That means the absence of a profile should not be interpreted as proof that an employer has no 403(b).

When a filing exists, the same evidence rule applies: historical filing data can help with plan-level context, while current contribution formulas, investment menus and participant fees require current plan documents.

Frequently asked questions

Is a 403(b) the same as a 401(k)?

No, but they are similar employer-sponsored defined contribution arrangements. The biggest structural difference is the type of employer eligible to sponsor each plan.

What is the 403(b) contribution limit for 2026?

The basic employee elective-deferral limit is $24,500 in 2026, the same as a 401(k). Standard age-50 catch-up contributions can add $8,000, while eligible participants ages 60–63 can have an $11,250 catch-up.

Can a 403(b) have an employer match?

Yes. Employer contributions are plan-specific. A 403(b) can offer matching or other employer contributions, just as a 401(k) can.

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

Yes, but employee elective deferrals to the two plans generally share the same annual Section 402(g) limit. Track contributions across employers when changing jobs.

What is the 15-year rule for a 403(b)?

Certain employees with at least 15 years of service with the same qualifying organization may be eligible for a special additional 403(b) deferral if the plan permits it. The formula has annual and lifetime limits.

Are 403(b) fees higher than 401(k) fees?

Not necessarily. Fees depend on the specific provider, investments, plan size and employer subsidy. Compare the actual plan disclosures.

Bottom line

The practical difference between a good 401(k) and a good 403(b) is smaller than many people think.

Both can provide substantial tax-advantaged savings. Both can have employer contributions, Roth features, loans and hardship withdrawals. Both can also be expensive or poorly designed.

For 2026, the core employee deferral limit is the same: $24,500.

So when choosing between jobs, do not rank the offers by whether the retirement plan ends in “k” or “b.” Compare employer dollars, vesting, eligibility, fees and investments.

Search the employer retirement-plan database to start with the public record, then verify the current terms in the plan documents.

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Sources and further reading: IRS, 403(b) Contribution Limits ↗ · IRS, Who Is Eligible to Sponsor a 403(b)? ↗ · IRS, 403(b) Plan FAQs ↗

*401(k) Plan Report provides educational information, not individualized investment, tax or legal advice. Plan terms vary; verify current employer documents before making a decision.*