Finance

403(b) 15-Year Rule Catch-Up Calculator

Find available 403(b) catch-up contribution room under the 15-years-of-service rule.


403(b) 15-Year Rule Catch-Up Calculator

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A separate catch-up from the standard age-50 provision — available only to long-tenured employees at specific types of tax-exempt and public employers, and applied before the age-based catch-up when both are available.

How it works

Employees with at least 15 years of service at the same qualifying employer can defer up to an extra $3,000 a year, up to a $15,000 lifetime cap. The amount available this year is the smaller of the annual limit or whatever lifetime room remains.

What this does not include

Eligibility also requires the employee’s average annual contributions over prior years to be below a specific threshold — a service-history detail this calculator doesn’t verify, only the dollar amount once eligible.

How to use this calculator

  1. Enter years of service with the current employer.
  2. Enter any lifetime 15-year catch-up already used.

Frequently asked questions

Can I use both the 15-year catch-up and the age-50 catch-up?

Yes — per Treasury regulations, the 15-year catch-up applies first, and any additional catch-up room needed is then treated as the age-50 catch-up.

Does the 15 years have to be continuous?

Generally it must be with the same qualifying employer, though the specific service-counting rules can be nuanced — this calculator takes total qualifying years as a direct input.

What employers qualify for this provision?

Public schools, hospitals, home health agencies, health and welfare service agencies, and churches or church associations, per the IRS source.

Important: This is general information, not financial advice. Figures are estimates, and your lender or provider decides the real numbers. Check with a qualified adviser before acting on them.

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Written by

M. Whitfield

Personal finance writer

M. Whitfield writes the personal finance calculators, covering loans, mortgages, savings, tax and investment maths. The focus is on showing exactly which number goes into a formula and which assumptions a result depends on, so readers can tell when a figure applies to their situation and when it does not. Every finance page states what it does not account for as plainly as what it does.

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Calculator reviewer — finance

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