The 403(b) 15-Year Rule: How Long-Serving Employees Contribute Extra
An extra $3,000 per year up to a $15,000 lifetime cap, exclusive to 403(b) plans. Here is who qualifies, how it stacks with other catch-ups, and the exact 2026 numbers. Updated 17 April 2026.
What the 15-year rule is
The 15-year service rule (IRC Section 402(g)(7)) is a 403(b)-only provision. It does not exist in 401(k), 457(b), or IRA plans. If you qualify, you can contribute an additional $3,000 per year above the standard elective deferral limit. The lifetime cap is $15,000 in total additional contributions over your career.
Why it exists: The rule was originally designed to reward long-service employees in traditionally lower-paying public service roles (teachers, nurses, hospital workers) who may have under-saved earlier in their careers. It is a recognition of the dedication of workers who stay 15+ years at the same institution.
Eligibility checklist
- 15 or more full-time equivalent years of service with the same employer
- The employer must be a public school system, hospital, home health service agency, health and welfare service agency, church, or church-related organisation
- Part-time service counts proportionally (e.g. 20 years at 75% time = 15 full-time equivalent years)
- Service does not carry over between employers. You must have the 15 years at one institution.
- The $15,000 lifetime cap is cumulative across all employers. If you used $6,000 at a previous job, you have $9,000 remaining.
2026 worked examples
Example A: Age 45, 16 years service, no prior 15-year contributions used
Example B: Age 55, 20 years service, no prior 15-year contributions used
Note: IRS applies the 15-year rule before the age 50+ catch-up for recordkeeping purposes. Both are applied in the same calendar year.
Example C: Age 62, 22 years service (SECURE 2.0 enhanced catch-up applies)
The highest possible 403(b) annual contribution in 2026 for a qualifying participant. This beats the maximum 401(k) contribution by $3,000 at every age.
How to claim the 15-year rule
You do not claim it automatically. Tell your payroll department or HR that you believe you qualify. Your employer must calculate eligibility based on years of service and confirm. Keep records of your service dates. Your employer will need to confirm eligibility each year. If you have prior 15-year rule contributions (from a previous employer), you are responsible for tracking the $15,000 lifetime cap and ensuring you do not exceed it.