The Short Answer
A 403(b) is a workplace retirement savings plan offered to employees of public schools, colleges, certain nonprofits, hospitals, and some religious organizations. It works much like a 401(k): you contribute money from your paycheck, often with tax advantages, and invest it for retirement. The “403(b)” simply refers to the section of the tax code that governs it.
If you’re a teacher, professor, nurse at a nonprofit hospital, or work for a charity, a 403(b) is likely the retirement plan available to you — the public and nonprofit world’s equivalent of the corporate 401(k).
How a 403(b) Works
You sign up through your employer and choose how much of each paycheck to contribute, up to an annual IRS limit. The money is invested — typically in mutual funds or annuities — and grows until retirement. Many employers also offer a matching contribution, which is essentially free money added to your account.
Most 403(b) plans offer two tax treatments:
- Traditional (pre-tax) — contributions come out before income tax, lowering your taxable income now; you pay tax on withdrawals in retirement.
- Roth (after-tax) — contributions are made with money you’ve already paid tax on, but qualified withdrawals in retirement are tax-free. (Not every plan offers a Roth option.)
A Simple Example
Example: A teacher earning $55,000 decides to contribute 6% of pay — about $3,300 a year — to a traditional 403(b). That $3,300 comes out pre-tax, trimming this year’s tax bill. If the school district matches a portion, say 3%, that adds roughly $1,650 more at no cost to the teacher. Over a career, those contributions plus matching and decades of tax-deferred growth can build into a substantial retirement nest egg.
403(b) vs. 401(k)
The two plans are very similar, with a few historical differences:
- Who offers them. 401(k)s come from for-profit companies; 403(b)s come from schools, nonprofits, and public-sector employers.
- Investment menu. 403(b) plans historically leaned heavily on annuity products and can have a narrower fund lineup, though many now offer low-cost mutual funds.
- Contribution limits. The annual employee contribution limits are generally the same, and both may allow extra “catch-up” contributions for older workers.
One practical tip: because some 403(b) plans include higher-fee annuity options, it’s worth examining the available investments and their costs to favor lower-cost choices when you can.
Withdrawal Rules
Like other retirement plans, a 403(b) is built for the long term. Withdrawals before age 59½ generally face a 10% penalty plus income tax, with certain exceptions. Required minimum distributions begin at the age set by current law for traditional balances. Roth 403(b) money follows its own qualified-withdrawal rules.
What Happens If You Change Jobs
If you leave your employer, your 403(b) goes with you. You can typically leave it where it is, roll it into a new employer’s plan, or roll it into an IRA. A rollover to an IRA can open up a much wider, often lower-cost, set of investment choices.
The Bottom Line
A 403(b) is the workplace retirement plan for teachers, nonprofit staff, and public-sector employees — the close cousin of the 401(k). It offers pre-tax or Roth contributions, tax-advantaged growth, and often an employer match worth capturing. If you have access to one, contributing at least enough to get any match is one of the simplest, highest-return retirement moves available.
Frequently Asked Questions
Who can have a 403(b)?
Employees of public schools, colleges and universities, many nonprofits, hospitals, and certain religious organizations. If you’re a teacher, professor, or nonprofit worker, a 403(b) is likely your workplace retirement plan.
What’s the difference between a 403(b) and a 401(k)?
They’re very similar tax-advantaged workplace plans with comparable contribution limits. The main differences are who offers them — nonprofits and public employers for 403(b)s, for-profit companies for 401(k)s — and that 403(b) plans historically featured more annuity products.
Does a 403(b) have an employer match?
Many do, though it varies by employer. If yours offers a match, contributing at least enough to receive the full match is valuable — it’s effectively free money added to your retirement savings.
Can I have both a traditional and Roth 403(b)?
If your plan offers a Roth option, you can often split contributions between traditional (pre-tax) and Roth (after-tax). Not all plans offer Roth, so check with your employer or plan administrator about what’s available.
What happens to my 403(b) if I leave my job?
It stays yours. You can leave it in the old plan, roll it into a new employer’s plan, or roll it into an IRA. Rolling into an IRA often gives you broader, lower-cost investment choices.
Should I watch out for fees in a 403(b)?
Yes. Some 403(b) plans include higher-cost annuity products. Review the available investments and their expense ratios, and favor lower-cost options like index funds when they’re offered, since fees directly reduce your long-term returns.
This article is for educational purposes only and is not investment, tax, or retirement advice. Contribution limits, income thresholds, and tax rules change and depend on your circumstances. Consult a qualified financial or tax professional and check current IRS guidance for your situation.