Printable Form 2026

IRS Publication 4483 – 403(b) Tax-Sheltered Annuities Plan for Sponsors

IRS Publication 4483 – If you sponsor a 403(b) tax-sheltered annuity plan for employees of a public school, university, hospital, charity, or other 501(c)(3) tax-exempt organization, IRS Publication 4483 is your essential compliance roadmap. Titled 403(b) Tax-Sheltered Annuities Plan for Sponsors (Rev. August 2021), this official IRS document outlines sponsor responsibilities, plan setup rules, contribution guidelines, distribution requirements, and common pitfalls to avoid.

Download the full PDF here: IRS Publication 4483

Although published in 2021, Publication 4483 remains the primary IRS guidance for 403(b) plan sponsors as of 2026. Core rules on written plans, universal availability, timely deposits, and error correction have not changed. Contribution limits, however, are adjusted annually for inflation—see the latest 2026 figures below.

What Is a 403(b) Tax-Sheltered Annuity Plan?

A 403(b) plan lets eligible employees of public schools and certain tax-exempt organizations save for retirement on a tax-advantaged basis through annuity contracts or custodial accounts. Employees can make pre-tax (or Roth, if the plan allows) elective deferrals via salary reduction. Employers may add nonelective or matching contributions.

Publication 4483 emphasizes that you must operate the plan exactly as described in your written plan document to maintain tax-favored status and protect participants from unexpected taxes or penalties.

Who Should Read IRS Publication 4483?

  • Administrators of public school systems
  • HR and finance teams at 501(c)(3) nonprofits
  • Church or hospital plan sponsors
  • Third-party administrators and plan vendors working with multiple 403(b) plans

The publication is written specifically for sponsors (the employer), while IRS Publication 4482 covers the participant side.

Key Sponsor Responsibilities Under Publication 4483

Publication 4483 stresses these core duties:

  1. Adopt and maintain a written plan — The plan must describe all operations (eligibility, contributions, distributions, loans, etc.). It can be a single document or a collection of documents, but a unified plan simplifies compliance.
  2. Ensure universal availability — If one eligible employee can make elective deferrals, all must be allowed (with limited exclusions, such as employees working fewer than 20 hours per week).
  3. Notify employees annually — Inform eligible employees of their right to make or change deferral elections.
  4. Deposit elective deferrals promptly — Send them to annuity providers or custodians as soon as administratively feasible, but no later than the 15th day of the month following the pay date.
  5. Correct errors timely — Use the IRS 403(b) Fix-It Guide and correction programs (EPCRS) to avoid plan disqualification, additional taxes, or penalties.

How to Establish or Maintain a Compliant 403(b) Plan?

  • Confirm your organization is an eligible employer (public school or 501(c)(3)).
  • Set up annuity contracts or custodial accounts that meet IRS requirements (no life insurance contracts issued after September 24, 2007).
  • Draft or update the written plan to include mandatory provisions.
  • For plans subject to ERISA, follow additional Department of Labor fiduciary rules and Form 5500 filing (if applicable).

Publication 4483 notes that using pre-approved plan documents can greatly reduce compliance risk.

2026 403(b) Contribution Limits (Updated from Publication 4483)

While Publication 4483 lists 2021 limits ($19,500 elective deferral, $58,000 total), here are the current IRS limits for 2026:

  • Employee elective deferrals: $24,500 (up from $23,500 in 2025)
  • Age 50+ catch-up contribution: $8,000 (total elective up to $32,500)
  • Age 60–63 super catch-up (if plan allows): Additional amount bringing total to $35,750 in some cases
  • 15-year service catch-up (for qualifying long-service employees at schools, hospitals, churches, etc.): Up to an extra $3,000 (with lifetime limits)
  • Combined employee + employer contributions (Section 415 limit): $72,000 ($80,000+ with catch-up in many scenarios)

Important ordering rule (from Publication 4483): When both 15-year and age-50 catch-ups apply, the 15-year catch-up is applied first.

Always verify the latest limits on IRS.gov, as they increase with cost-of-living adjustments.

Distribution, Loan, and Hardship Rules

Publication 4483 highlights strict requirements to avoid taxable early distributions:

  • Hardship withdrawals must be properly documented, and the employee must exhaust other resources.
  • Loans from multiple vendors must comply with aggregate limits; non-compliant loans become taxable distributions.
  • In-service exchanges/transfers require identical distribution restrictions and information-sharing agreements between providers.
  • Excess elective deferrals must be distributed by April 15 of the following year to avoid double taxation and penalties.

Common Mistakes and How to Fix Them (403(b) Fix-It Guide)?

Publication 4483 repeatedly warns about these frequent errors:

  • Failure to limit deferrals properly
  • Late deposit of elective deferrals
  • Missing universal availability
  • Inadequate written plan
  • Improper hardship or loan processing

Most can be self-corrected using the IRS 403(b) Fix-It Guide or the Voluntary Correction Program (VCP).

Additional Trusted IRS Resources for 403(b) Sponsors

Why Compliance Matters in 2026?

Noncompliance can lead to plan disqualification, employees losing tax-deferred status, employer penalties, and costly audits. Following Publication 4483 helps you maximize employee retirement benefits while staying fully compliant.

Pro tip: Schedule an annual plan review using the IRS 403(b) Plan Checklist (Publication 4546) and consult a retirement plan specialist or tax advisor for your specific situation.

Frequently Asked Questions About IRS Publication 4483 and 403(b) Plans

Is Publication 4483 still current in 2026?
Yes. The core sponsor rules have not changed since the August 2021 revision, and IRS.gov continues to link to it as the primary sponsor resource.

Where can I download Publication 4483?
Direct PDF: https://www.irs.gov/pub/irs-pdf/p4483.pdf

Do contribution limits change every year?
Yes. Always check the latest IRS announcements for elective deferral and Section 415 limits.

Can my 403(b) plan offer Roth contributions?
Yes, if the written plan document permits designated Roth accounts.

What if my organization is a church or governmental entity?
Special rules may apply (e.g., no ERISA requirements for governmental plans). Publication 4483 and Publication 571 provide details.

For the most accurate, up-to-date guidance, always refer to official IRS publications and consult a qualified tax professional. Proper administration of your 403(b) plan protects both your organization and your employees’ retirement security.

Last verified with IRS sources as of February 2026.