401(k) vs 403(b)
Compare 401(k) and 403(b) employer-sponsored retirement plans — same tax benefits, different employers and rules.
Overview
401(k) plans are offered by for-profit employers; 403(b) plans by public schools, hospitals, and non-profits. Contribution limits and tax treatment match closely, but 403(b)s historically have narrower investment menus and a special 15-year service catch-up.
Choose 401(k) when...
You will use a 401(k) if your employer is a for-profit company; the choice is determined by employment, not preference.
Choose 403(b) when...
You will use a 403(b) if you work for a public school, university, hospital, or non-profit; if you have 15+ years of service you may unlock additional catch-up room.
Our Verdict
For most participants the 401(k) and 403(b) are functionally identical — same limits, same tax treatment, same Roth flexibility. Choose based on your employer; the meaningful differences are inside the plan menu (fees, fund choices) rather than the plan type itself.
Frequently Asked Questions
What is the difference between 401(k) and 403(b)?
401(k) plans are offered by for-profit employers; 403(b) plans by public schools, hospitals, and non-profits. Contribution limits and tax treatment match closely, but 403(b)s historically have narrower investment menus and a special 15-year service catch-up.
When should I choose 401(k) over 403(b)?
You will use a 401(k) if your employer is a for-profit company; the choice is determined by employment, not preference.
When should I choose 403(b) over 401(k)?
You will use a 403(b) if you work for a public school, university, hospital, or non-profit; if you have 15+ years of service you may unlock additional catch-up room.
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