A 457(b) and a 403(b) are both tax-advantaged retirement plans for public sector and nonprofit employees, but they differ in who can use them, how early withdrawals work, and whether you can contribute to both at the same time. If your employer offers both, understanding these differences can significantly increase your retirement savings potential.
Who Gets Access to Each Plan
A 403(b) plan is available to employees of public schools, 501(c)(3) nonprofit organizations, nonprofit hospitals, and ministers working for religious organizations. Think teachers, university staff, hospital workers at nonprofits, and employees of charitable organizations.
A 457(b) plan is designed for state and local government employees and certain public service workers, including police officers, firefighters, and public university employees. Some tax-exempt nonprofit organizations also offer 457(b) plans to their workers, though these nongovernmental 457(b) plans come with different rules (more on that below).
There’s meaningful overlap between these two groups. A public university employee or a nonprofit hospital worker might have access to both a 403(b) and a 457(b) through the same employer. That dual access creates a powerful savings opportunity that private sector workers rarely get.
Contribution Limits for 2026
Both plans share the same base contribution limit: $24,500 in employee elective deferrals for 2026. But the catch-up provisions differ, and the real advantage comes when you have access to both plans.
For the 403(b), employees age 50 and older can contribute an additional $8,000 in catch-up contributions, bringing their total employee deferrals to $32,500. Workers aged 60 through 63 get an even higher catch-up limit of $11,250, thanks to a change from the SECURE 2.0 Act, pushing their ceiling to $35,750. The 403(b) also has a unique perk: if you’ve worked for the same eligible employer for at least 15 years, you may qualify for an additional $3,000 per year in deferrals, up to a $15,000 lifetime cap. When both the 15-year and age-based catch-ups apply, the 15-year catch-up gets used first.
The 457(b) has its own catch-up structure. Beyond the standard age-based catch-ups, governmental 457(b) plans offer a “three-year catch-up” for participants approaching the plan’s normal retirement age. During the three years before that age, you can potentially defer up to double the standard limit. The 403(b)’s 15-year catch-up does not apply to 457(b) plans.
When you add in employer contributions, the 403(b) has a combined annual additions limit (employee plus employer contributions) of $72,000 for 2026, or 100% of your compensation, whichever is less.
The Double Contribution Advantage
Here’s the detail that makes the biggest practical difference: the IRS treats 457(b) and 403(b) contribution limits as completely separate. They are not combined. If your employer offers both plans, you can contribute the full $24,500 to your 403(b) and the full $24,500 to your 457(b) in the same year, for a total of $49,000 in employee deferrals before any catch-up contributions.
Add in age-based catch-ups on both sides, and the total grows substantially. This is a rare opportunity in the retirement savings world. Most workers are capped at a single plan’s deferral limit. If you’re a public employee or nonprofit worker with access to both, you can effectively double your tax-advantaged savings. The trade-off is less take-home pay today, but the long-term compounding benefit is significant, especially for people who started saving later and need to catch up.
Early Withdrawal Rules
This is where the two plans diverge most sharply. A 403(b) works like a 401(k) in this regard: if you withdraw money before age 59½, you’ll owe a 10% early withdrawal penalty on top of regular income taxes. There are some exceptions (disability, certain medical expenses, substantially equal periodic payments), but the general rule discourages early access.
A governmental 457(b) plan has no 10% early withdrawal penalty. Once you separate from your employer, you can take distributions at any age without the penalty. You’ll still owe income tax on the money, but avoiding that extra 10% hit gives 457(b) participants significantly more flexibility. This makes the 457(b) especially valuable for people who plan to retire before 59½ or who want a financial bridge between early retirement and the age when they can tap other accounts penalty-free.
One important caveat: nongovernmental 457(b) plans, offered by tax-exempt nonprofits rather than government entities, work differently. The assets in these plans may remain subject to the employer’s creditors, and distribution rules are more restrictive. If your 457(b) is through a nonprofit rather than a government employer, review the specific plan terms carefully.
Investment Options
Both 403(b) and 457(b) plans typically offer two types of investment products: mutual funds and annuities. Mutual funds are regulated as securities by the SEC, while annuities are insurance contracts that may be regulated by state insurance commissions, the SEC, or both, depending on the type.
Historically, 403(b) plans leaned heavily on annuity products, and some still do. Annuities can carry higher fees than mutual funds, so it’s worth checking what your plan charges. Many 403(b) plans have modernized their investment menus to include low-cost mutual fund options alongside or instead of annuities. The 457(b) plan lineup varies by employer but follows a similar structure. In either plan, look at the expense ratios on your available funds. Even small fee differences compound into meaningful dollar amounts over a 20- or 30-year career.
Roth Options in Both Plans
Many 403(b) and 457(b) plans now offer a Roth option alongside the traditional pre-tax option. With the Roth version, you contribute after-tax dollars. Your contributions don’t reduce your taxable income today, but qualified withdrawals in retirement come out tax-free, including all the investment growth.
The same contribution limits apply whether you choose traditional, Roth, or a mix of both. If you expect to be in a higher tax bracket in retirement, or you want tax diversification, splitting contributions between pre-tax and Roth accounts across your 403(b) and 457(b) gives you flexibility to manage your tax bill in retirement.
Choosing Between Them (or Using Both)
If you only have access to one plan, the choice is made for you. But if your employer offers both, prioritize based on your goals. The 457(b)’s penalty-free early access makes it a better fit for money you might need before 59½. The 403(b)’s 15-year catch-up provision benefits long-tenured employees who want to save more aggressively late in their careers. If you can afford to max out both, do it. The separate contribution limits are one of the most underused advantages in public sector compensation.
When you leave your employer, both governmental plan types can be rolled into an IRA or another eligible retirement plan. A governmental 457(b) rolled into a traditional IRA loses its penalty-free early withdrawal advantage, so consider keeping it in the 457(b) if early access matters to you.