What Is a 403(b) Plan? Everything Teachers and Nonprofit Workers Need to Know

If you work for a public school, university, hospital, or nonprofit organization, your workplace retirement plan is likely a 403(b) — not a 401(k). The two plans are nearly identical in how they work, but there are a few key differences worth knowing. Here's everything you need to understand about your 403(b).

Who Can Use a 403(b)?

• Public school and university employees (teachers, administrators, professors)
• Employees of 501(c)(3) nonprofit organizations
• Hospital employees (if the hospital is nonprofit)
• Ministers and church employees
• Certain government employees

2026 Contribution Limits

• Employee contribution limit: $23,500 (same as 401(k))
• Catch-up contributions (age 50+): Additional $7,500 = $31,000 total
• Super catch-up (ages 60–63): Additional $11,250 = $34,750 total
• Combined employee + employer limit: $70,000
• 403(b) special 15-year catch-up: If you've worked for the same employer 15+ years and contributed less than $5,000/year on average, you may contribute an extra $3,000/year up to $15,000 lifetime

403(b) vs. 401(k): Key Differences

• Investment options: 403(b) plans often offer annuities as investments, which can have high fees — check carefully
• Employer matching: Less common in 403(b) plans (especially in schools), but when offered, it's free money
• Vesting: 403(b) plans may have immediate vesting (unlike some 401(k) plans with 3–6 year vesting)
• 15-year rule: 403(b)-specific catch-up provision for long-tenure employees

Traditional vs. Roth 403(b)

Like 401(k) plans, many 403(b) plans now offer a Roth option. Traditional 403(b): contributions are pre-tax, you pay taxes in retirement. Roth 403(b): contributions are after-tax, withdrawals in retirement are tax-free. If you expect to be in a higher tax bracket in retirement, the Roth option is worth considering.

The Annuity Problem in 403(b) Plans

Historically, 403(b) plans offered only annuity products, which often carry fees of 2–3% per year. Many plans now offer mutual funds and ETFs, but some — particularly in K–12 school districts — still default to annuity products. Always check the fee structure before investing.

403(b) Withdrawal Rules

• Penalty-free withdrawals begin at age 59½
• Required Minimum Distributions (RMDs) start at age 73
• 10% early withdrawal penalty applies before 59½ (with exceptions for disability, death, and certain separations from service)
• Loans allowed: typically up to 50% of vested balance or $50,000, whichever is less