403(b) + 457(b): Can You Contribute to Both?

by | Jul 29, 2026 | Financial Rounds


Case #001 • Retirement Plan Decisions for Physicians

Why This Matters

Most hospital-employed physicians know they have a 403(b).

Far fewer realize there may be another account listed beside it in the benefits portal: a 457(b).

The two can look like variations of the same choice. They are not. For someone eligible to participate, a 457(b) may provide a second, separate annual deferral limit in addition to the 403(b).

The difference between “I have a retirement plan” and “I understand everything I’m eligible for” illustrates how an opportunity can remain unused simply because no one asked the second question.

The Diagnosis

Benefits guides often list retirement accounts separately, along with the eligibility requirements and contribution rules for each. What they may not explain clearly is how the accounts relate to one another.

That presentation can create a natural assumption: Which account should I choose?

But many eligible hospital employees can contribute to both a 403(b) and a 457(b) during the same year because the plans generally have separate employee-deferral limits.

The reasonable first question is: Should I be contributing more toward retirement?

The better question is: What accounts am I actually eligible for, and am I using them intentionally?

The Treatment

This is not a recommendation to maximize both accounts. The right decision depends on the plan provisions, the employer, cash-flow needs, tax considerations, and the role each account would play in the broader financial picture.

Before contributing substantially to a 457(b), ask your benefits office for the plan document or summary and clarify several points.

First, determine whether the plan is governmental or non-governmental. At many nonprofit hospital systems, the 457(b) is non-governmental. Assets in a nongovernmental 457(b) generally remain the employer’s property and are available to its general creditors until paid to the participant. That creates employer-credit risk that does not apply in the same way to assets held in a 403(b).

Next, review the distribution provisions. Nongovernmental 457(b) plans can limit when benefits begin, how they are paid, whether an election may be changed, and what happens after leaving the employer. Those rules should be understood before contributing, not discovered during a job change or retirement.

Finally, confirm how employer contributions, if any, affect the available 457(b) limit and whether participation is limited to a particular group of employees.

Practical Takeaways

  • Confirm whether your employer offers a 457(b) in addition to the 403(b) and whether you are eligible to participate.
  • Ask whether the 457(b) is governmental or non-governmental and understand the employer-credit risk before contributing.
  • Review the contribution and distribution provisions rather than assuming the 403(b) and 457(b) operate the same way.

Bottom Line

The lesson is not that everyone should contribute to both accounts.

It is that the most visible benefit may not be the only one available, and identifying another account is only the beginning. The next step is understanding how its rules, risks, and timing connect with the rest of the decision.

Before assuming your available options have been covered, ask: What else am I eligible for, and what else does it touch?

About the Author

Anthony R. Ruiz, CFP®, CPWA®, MBA is the Founder and Principal Wealth Strategist of Ruiz Financial Group, a fee-only financial planning and investment management firm in Toledo, Ohio.

He works with healthcare professionals, business owners, and people approaching or living in retirement.