A traditional pre-tax 403(b) is a retirement plan for employees of public schools and tax-exempt organizations that takes contributions out of your paycheck before federal income tax is calculated. You pay less tax today because the money you defer never shows up as taxable wages that year, and in exchange every dollar you eventually withdraw, including investment growth, is taxed as ordinary income. For 2026, you can defer up to $24,500, with extra catch-up room starting at age 50.
Only certain employers can sponsor a 403(b): tax-exempt organizations under section 501(c)(3) and public educational institutions.1Internal Revenue Service. 403(b) Plan Fix-It Guide – Your Organization Isnt Eligible to Sponsor a 403(b) Plan In practice, that covers teachers, school administrators, university faculty, non-profit hospital staff, and employees of religious organizations.2Office of the Law Revision Counsel. 26 USC 403 – Taxation of Employee Annuities If your employer offers the plan to anyone, the universal availability rule generally requires it be offered to everyone, with narrow exceptions for employees working fewer than 20 hours a week, students working for their own school, non-resident aliens with no U.S.-source income, and workers already eligible for another 401(k), 403(b), or 457(b) at the same employer.3Internal Revenue Service. Issue Snapshot – 403(b) Plan – The Universal Availability Requirement For ERISA-covered 403(b) plans, part-time workers who log at least 500 hours in each of two consecutive years must also be allowed to participate for plan years beginning after December 31, 2024.4Internal Revenue Service. Notice 2024-73 – Additional Guidance With Respect to Long-Term, Part-Time Employees
How the Pre-Tax Deduction Cuts Your Tax Bill
When you elect a pre-tax contribution, your employer subtracts that amount from your gross pay before calculating federal income tax withholding. Earn $60,000, contribute $6,000, and only $54,000 lands in Box 1 of your W-2 as taxable wages.5Internal Revenue Service. 2026 General Instructions for Forms W-2 and W-3 Most states mirror the federal treatment, so your state income tax generally drops as well.
One thing pre-tax deferrals do not reduce is Social Security and Medicare tax. Your employer still withholds FICA on your full salary, including the portion going into the 403(b).6Internal Revenue Service. Retirement Plan FAQs Regarding Contributions That works in your favor for Social Security, because your earnings record reflects your full salary rather than the reduced taxable figure.
Whether pre-tax actually saves you money over the long run depends on comparing your tax rate now to your tax rate when you withdraw. Most people are in a lower bracket in retirement, which is why the pre-tax choice usually wins. Some 403(b) plans also offer a designated Roth account, where contributions are taxed now and qualified withdrawals come out tax-free; if the plan offers Roth to anyone, it must offer it to all participants.7Internal Revenue Service. Retirement Plans FAQs on Designated Roth Accounts
2026 Contribution Limits
The standard elective deferral limit for 2026 is $24,500. That cap applies across all your 403(b), 401(k), and SIMPLE IRA accounts combined, so if you hold more than one of those, your total deferrals still cannot exceed $24,500.8Internal Revenue Service. Retirement Topics – 403(b) Contribution Limits Governmental 457(b) plans sit under a separate limit, so contributions there don’t eat into the $24,500.
Several catch-up provisions let older workers save more:
- Age 50 and older: an additional $8,000, for a total deferral of $32,500.9Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500
- Ages 60 through 63: a higher catch-up of $11,250 instead of $8,000, for a total of $35,750. This enhanced catch-up came from the SECURE 2.0 Act and took effect in 2025.8Internal Revenue Service. Retirement Topics – 403(b) Contribution Limits
- 15-year service catch-up: if you’ve worked for the same qualifying employer for at least 15 years, you may contribute an extra $3,000 per year, up to a $15,000 lifetime cap. This is unique to 403(b) plans and can stack with the age-based catch-ups, with the 15-year amount used first.10Office of the Law Revision Counsel. 26 USC 402 – Taxability of Beneficiary of Employees Trust
Total contributions from all sources, including any employer match or nonelective contributions, cannot exceed $72,000 for 2026.8Internal Revenue Service. Retirement Topics – 403(b) Contribution Limits
If You Contribute Too Much
Excess elective deferrals must be distributed back to you by April 15 of the following year. Ask the plan administrator to return the excess plus any earnings. The excess is taxable in the year you deferred it, and the earnings are taxable in the year they come out. Miss the April 15 deadline and the money gets taxed twice: once in the year of deferral and again when it’s eventually distributed, plus a possible 10% early withdrawal penalty.11Internal Revenue Service. Consequences to a Participant Who Makes Excess Annual Salary Deferrals
The Saver’s Credit
If your income is moderate, your 403(b) contribution can earn you a second tax break: the Retirement Savings Contributions Credit. It’s a nonrefundable credit worth 10%, 20%, or 50% of your contributions, up to $2,000 per person ($4,000 on a joint return). For 2026, you lose the credit once AGI exceeds $80,500 filing jointly, $60,375 as head of household, or $40,250 for single filers.9Internal Revenue Service. 401(k) Limit Increases to $24,500 for 2026, IRA Limit Increases to $7,500 A married couple with AGI under $48,500 hits the full 50% rate, meaning a $2,000 credit on a $4,000 combined contribution. Because it’s a credit rather than a deduction, it cuts your tax bill dollar for dollar.
How Withdrawals Are Taxed
Since your contributions were never taxed going in, every dollar coming out is taxed as ordinary income in the year of withdrawal, contributions and investment gains alike.12Internal Revenue Service. IRC 403(b) Tax-Sheltered Annuity Plans Distributions are reported to you and the IRS on Form 1099-R.
Withdraw before age 59½ and you generally owe a 10% additional tax on top of regular income tax.13Internal Revenue Service. Retirement Plans FAQs Regarding 403(b) Tax-Sheltered Annuity Plans Several exceptions remove the penalty (though not the income tax):
- Separation from service in or after the year you turn 55, from the plan of the employer you’re leaving. The threshold drops to age 50 for public safety employees of state or local governments.14Office of the Law Revision Counsel. 26 USC 72 – Annuities; Certain Proceeds of Endowment and Life Insurance Contracts
- Total and permanent disability.
- A series of substantially equal periodic payments based on your life expectancy, sometimes called 72(t) payments.
- Unreimbursed medical expenses exceeding 7.5% of AGI.
- Distributions to a former spouse under a qualified domestic relations order.
- An IRS levy on the account.
The age-55 rule only reaches the plan you’re leaving, not accounts from earlier jobs. Consolidating older 403(b) balances into your current employer’s plan before separating can preserve that access.15Internal Revenue Service. Retirement Topics – Exceptions to Tax on Early Distributions
Required Minimum Distributions
You can’t leave money in a traditional 403(b) forever. Starting at age 73, you must begin taking required minimum distributions each year.16Internal Revenue Service. Retirement Topics – Required Minimum Distributions (RMDs) Your first RMD is due by April 1 of the year after you turn 73. If you’re still working for the employer sponsoring the plan and the plan document permits, you can delay RMDs from that plan until April 1 of the year after you actually retire.
The RMD amount is your account balance on December 31 of the prior year divided by a life expectancy factor from the IRS Uniform Lifetime Table. Miss an RMD and the excise tax on the shortfall is 25%.17Office of the Law Revision Counsel. 26 USC 4974 – Excise Tax on Certain Accumulations in Qualified Retirement Plans Take the missed distribution within the correction window (generally two years) and the penalty drops to 10%. The IRS can waive it entirely for reasonable cause if you take the missed amount promptly.
Rollovers When You Leave
When you change jobs or retire, you can generally roll a traditional pre-tax 403(b) into a traditional IRA, another 403(b), a 401(k), a governmental 457(b), a SEP-IRA, or a Roth IRA. Rolling into a Roth triggers income tax on the converted amount.18Internal Revenue Service. Rollover Chart
A direct rollover, where the plan administrator sends the money straight to the new account, has no tax withheld and nothing to report as income.19Internal Revenue Service. Rollovers of Retirement Plan and IRA Distributions If the distribution is instead paid to you, the plan must withhold 20% for federal taxes right off the top.20Internal Revenue Service. Topic No. 413, Rollovers From Retirement Plans You then have 60 days to deposit the full original amount into an eligible retirement account, replacing the withheld 20% out of pocket. Deposit only what you received, and the withheld 20% is treated as a taxable distribution, potentially with a 10% early withdrawal penalty if you’re under 59½. A direct rollover avoids the trap.
Loans and Hardship Withdrawals
Your 403(b) isn’t required to offer loans, but many do. If yours permits borrowing, you can take out the lesser of $50,000 or half your vested balance (with a floor of $10,000). Repayments must be made in roughly equal installments at least quarterly over no more than five years, though a loan used to buy your primary home can run longer.21Internal Revenue Service. Retirement Plans FAQs Regarding Loans Stick to the repayment terms and the loan isn’t a taxable distribution. Default, and the outstanding balance becomes taxable income.
Hardship withdrawals work differently. You don’t repay them, so the money leaves your retirement savings permanently and gets taxed as ordinary income. To qualify under the IRS safe harbor, your financial need must fit one of these categories:22Internal Revenue Service. Retirement Topics – Hardship Distributions
- Medical expenses for you, your spouse, dependents, or plan beneficiary.
- Costs of purchasing your principal residence (not mortgage payments).
- The next 12 months of postsecondary tuition, fees, and room and board for you or your family.
- Payments to prevent eviction or foreclosure on your principal residence.
- Funeral expenses for you, your spouse, dependents, or beneficiary.
- Repair costs for damage to your principal residence.
Approval of a hardship withdrawal doesn’t waive the 10% early distribution penalty. If you’re under 59½, that penalty still applies on top of the income tax, unless one of the separate early-withdrawal exceptions covers your situation.