Last verified: September 22, 2026.
In the 403b vs 401k comparison, the plans work almost the same way. You put in pre-tax or Roth money from your paycheck, it grows without yearly tax, and in 2026 both let you defer up to $24,500. The real differences are who offers them, what you can invest in, and a special catch-up that only 403(b) savers can use. A 457(b) is the odd one out, because it has its own separate limit and no 10% early withdrawal penalty in government plans.
This guide compares all three using the 2026 IRS limits, with examples you can check in our 401(k), 403(b) and 457(b) contribution calculator. It's researched from IRS publications and isn't personal financial advice.
403b vs 401k vs 457b at a glance
| 401(k) | 403(b) | 457(b) | |
|---|---|---|---|
| Who offers it | Private, for-profit employers | Public schools, colleges, 501(c)(3) nonprofits, churches | State and local governments, some tax-exempt organizations |
| 2026 employee limit | $24,500 | $24,500, shared with any 401(k) | $24,500, separate from 401(k) and 403(b) |
| Age 50+ catch-up | $8,000 | $8,000 | $8,000 in government plans |
| Ages 60 to 63 catch-up | $11,250 | $11,250 | $11,250 in government plans |
| Extra catch-up | None | 15-year rule, up to $3,000 a year | Final 3 years before retirement age |
| Investments | Whatever the plan offers | Annuities and mutual funds | Whatever the plan offers |
| 10% penalty before 59½ | Yes, with exceptions | Yes, with exceptions | No, in government plans |
Who gets a 401(k) and who gets a 403(b)
In most 403b vs 401k decisions, you don't get a choice. Your employer makes it. Companies run 401(k) plans. The IRS says a 403(b) plan is for employees of public schools, colleges and universities, churches, 501(c)(3) charities, and certain ministers.
So a nurse at a nonprofit hospital, a public school teacher and a university librarian usually get a 403(b). An accountant at a private firm gets a 401(k). If you work at a city or state agency, you may be offered a 457(b), and often a 403(b) or 401(a) alongside it.
2026 contribution limits for all three plans
The IRS raised the 2026 limit to $24,500 for 401(k), 403(b) and governmental 457 plans, up from $23,500 in 2025. If you're 50 or older, you can add an $8,000 catch-up. If you turn 60, 61, 62 or 63 during 2026, the catch-up is $11,250 instead.
That gives these 2026 totals for your own contributions to one plan:
- Under 50: $24,500
- 50 to 59, or 64 and older: $32,500
- 60 to 63: $35,750
Employer matches don't count against those numbers in a 401(k) or 403(b). In a 457(b), employer money shares the same limit as yours, so a big match there can use up room you'd otherwise fill yourself.
The one limit a 401(k) and 403(b) share
This is where 403b vs 401k matters if you have two jobs, or switch jobs mid-year. The IRS says you have to combine your 403(b) deferrals with every other plan except 457 plans. If you put $15,000 into a 401(k) at one job, you only have $9,500 of room left in a 403(b) that year.
A 457(b) is excluded from that combined limit, which is why it's so useful to public workers. Someone with both a 403(b) and a governmental 457(b) can defer $24,500 into each, or $49,000 in total before any catch-up.
The catch-up rules that only some plans have
403(b): the 15-year rule
If you've worked 15 years or more for a public school system, hospital, home health agency, health and welfare agency or church, your 403(b) may let you add up to $3,000 a year on top of the normal limit. There's a lifetime cap of $15,000, and the IRS formula reduces it by extra deferrals you've made before. Not every plan offers it, so check your plan documents. A 401(k) has no equivalent.
457(b): the final three years
In the three years before the plan's normal retirement age, a 457(b) can let you catch up on limits you didn't use in earlier years. The IRS caps this special catch-up at twice the annual limit, or at the regular limit plus the unused amounts from earlier years if that's lower. You can't use it in the same year as the age-50 catch-up.
The 2026 Roth catch-up rule for higher earners
This is new for 2026, and most comparisons skip it. If you earned more than $150,000 in Social Security wages from your employer in 2025, any catch-up contributions you make in 2026 must go in as Roth money, not pre-tax. The threshold comes from IRS Notice 2025-67, and it applies to 401(k), 403(b) and governmental 457(b) plans alike.
Your regular $24,500 can still be pre-tax. Only the $8,000 or $11,250 catch-up is affected. You pay tax on that part now instead of in retirement, so your take-home pay drops a little more than you might expect.
403b vs 401k investments, matches and fees
A 401(k) can hold whatever funds the plan sponsor picks: index funds, target-date funds, sometimes company stock. By law, a 403(b) can only hold annuity contracts from insurance companies or custodial accounts invested in mutual funds. Annuities in some 403(b) plans can carry higher fees than mutual funds, so check the expense ratios in your plan before you pick.
The match is where the 403b vs 401k gap shows up most in real life, although it comes from the employer, not the plan type. Both plans allow a match. In our calculator, a 35-year-old earning $55,000 who puts in 10% a year and gets 3% raises and a 6% return reaches about $624,500 at 65 with no match. Add a 50% match on the first 6% of salary and the same saver reaches about $811,900, roughly $187,000 more from about $78,500 of employer money. If you're comparing job offers, the match is worth more than the plan's name.
Early withdrawals: where a 457(b) wins
On withdrawals, 403b vs 401k is a tie. Take money from either before 59½ and you usually owe a 10% additional tax on top of income tax. The rule of 55 is one common way around it. If you leave your job in or after the year you turn 55, withdrawals from that employer's plan skip the 10% tax. For public safety workers, the age is 50.
A governmental 457(b) is more generous. The IRS says distributions from a governmental 457(b) aren't subject to the 10% additional tax, except money you rolled in from another kind of plan or an IRA. If you might retire before 59½, a 457(b) gives you income without the penalty.
The risk in a non-government 457(b)
Some nonprofits, often hospitals and universities, offer a 457(b) to senior staff. These plans work differently. The IRS says the assets in a non-governmental 457(b) remain the employer's property and are available to its creditors if it goes bankrupt. Treat that money as a promise from your employer, not as your own account, and think twice before putting most of your savings there.
403b vs 401k: which one should you use?
Most people don't get to pick, so the better question is how to use what you have. Here's a simple order that works for most savers:
- Contribute at least enough to get the full employer match, whatever the plan is called.
- If you have a 403(b) and a governmental 457(b), fund both once the match is covered. The 457(b) adds room and early access.
- Check your 403(b) fees. If the funds are expensive, contribute up to the match and then consider an IRA for the rest.
- From age 50, use the catch-up. From 60 to 63, use the bigger one.
- If you earned over $150,000 in 2025, plan for your 2026 catch-up to be Roth.
Putting more into a pre-tax plan also lowers the income tax on each paycheck. Our guide to how much tax is deducted from a paycheck shows the effect with real numbers. To see how long the final balance could last, read how long your money will last in retirement.
Frequently asked questions
Is a 403(b) better than a 401(k)?
In a straight 403b vs 401k matchup, neither is better in itself. They share the same $24,500 limit in 2026 and the same tax treatment. A 403(b) adds the 15-year catch-up but limits you to annuities and mutual funds, so the match and fees matter more than the plan type.
Can I have a 401(k) and a 403(b) at the same time?
Yes, if you work for two employers, but your deferrals to both count toward one $24,500 limit in 2026. Only a 457(b) has a separate limit.
Can I contribute to both a 403(b) and a 457(b)?
Yes. The two limits are separate, so you can defer up to $24,500 into each in 2026, or $49,000 in total, plus any catch-up you qualify for.
What is a 457(b) plan?
It's a deferred compensation plan for state and local government workers and some nonprofit employees. Government 457(b) plans have no 10% early withdrawal penalty, and the contribution limit is separate from 401(k) and 403(b) plans.
Do 403(b) plans have an employer match?
They can. Whether you get a match depends on your employer's plan, just as it does with a 401(k). Check your plan's summary plan description for the match formula and vesting schedule.
