What’s the Smartest Retirement Plan for Doctors Who Own Their Own Practice?

Key Takeaways:

• The “best” retirement plan depends on your practice structure, savings target, profitability, and staff makeup.

• For most practices with employees, a 401(k) with profit sharing offers flexibility, helps control staff costs, and allows owners to maximize contributions.

• High-income practices often benefit from layering in a cash balance plan, which can significantly increase tax-deferred savings.

If you own your medical practice, your retirement plan is one of the most effective ways to manage taxes, control compensation, and build long-term wealth. The challenge is that there isn’t a one-size-fits-all answer. A 401(k), SEP IRA, or a defined benefit or cash balance plan can all work, but they lead to very different outcomes depending on your income, staff size, and goals.

The right choice affects how much you can contribute, what you’re required to contribute for employees, and how much complexity you’re taking on. Here’s how to think through the tradeoffs and choose a plan that fits your practice.

Start with Your Goals and the Realities of Your Practice

The right plan starts with a clear picture of what you’re trying to accomplish and what your business can support. That means getting specific about:

• How much you want to save each year
• How consistent your profits are from year to year
• The size, age, and compensation of your staff
• How generous you want to be with employee benefits

These inputs drive the structure. If your savings target fits within 401(k) limits and you have employees, a 401(k) with profit sharing is often the most efficient place to start. If you consistently have the cash flow and desire to save well into six figures per physician, layering a cash balance plan on top of the 401(k) is typically the next step.

SEP IRA

A SEP IRA (Simplified Employee Pension) is about as straightforward as it gets. It’s easy to set up, requires very little administration, and allows the practice to contribute up to 25% of compensation, capped annually (for 2026, the lesser of 25% of pay or $72,000). Contributions are employer-only, so employees can’t defer from their own paychecks, and there’s no Roth option.

That simplicity comes with a tradeoff. Once you have employees, the rules require you to contribute the same percentage of compensation for everyone who’s eligible.

That means if you put away 25% for yourself, you’re committing to 25% for your staff as well. As your team grows, that cost adds up quickly and can limit how much you’re comfortable contributing for your own retirement.

SEP IRAs tend to work best when:

• You’re solo or only employ a spouse.
• You prioritize ease over flexibility.
• You want a quick, low-maintenance way to make a large deductible contribution in a strong year.

As soon as you have a broader team and want more control over allocating benefits, a SEP IRA usually stops being the most effective long-term option.

401(k) With Profit Sharing

Once you have employees, a 401(k) with employer contributions usually becomes the foundation of your retirement plan. It allows both you and your staff to defer salary (pre-tax or Roth, depending on the plan design), while the practice adds contributions through a match and/or profit sharing.

The real advantage is flexibility. Unlike a SEP, you’re not locked into a single contribution percentage for everyone. A well-designed 401(k) can use allocation formulas, like new comparability or age-weighted structures, to direct a larger share of contributions to physician owners while still meeting IRS requirements for staff benefits.

It also shifts some responsibility to employees. Your team can contribute from their own paychecks, often paired with a match, which increases the value of the benefit without requiring the practice to fund everything.

For you as the owner, this structure gives you meaningful control:

• Maximize your own contributions within 401(k) limits.
• Adjust match and profit-sharing formulas to manage staff costs.
• Use vesting schedules to support retention.
• Offer features like Roth contributions and loans that employees expect.

This balance of flexibility, cost control, and employee appeal is what makes the 401(k) with profit sharing the default choice for most established medical practices.

Defined Benefit and Cash Balance Plans

Once you’re consistently maxing out your 401(k) and still have excess cash flow, the conversation shifts. This is where defined benefit plans, most often structured as cash balance plans, start to make a meaningful difference.

A cash balance plan functions like an account with annual “pay credits” and “interest credits,” but behind the scenes, contributions are calculated by an actuary to fund a target retirement benefit. For higher-earning physicians, especially later in their careers, that can translate into six-figure annual contributions on a tax-deferred basis, well beyond what a 401(k) allows.

These plans tend to work best when:

• Physician owners are in their late 40s, 50s, or 60s.
• Practice income is stable and consistently strong.
• There’s a clear goal to reduce current taxable income while accelerating retirement savings.

The tradeoffs are real, however, and need to be understood upfront:

• More complexity and cost, including actuarial oversight and higher administrative fees.
• A multi-year commitment, since these plans are designed to be funded consistently, not used as a one-time strategy.

In practice, many groups land on a layered approach: a 401(k) with profit sharing for the entire team, paired with a cash balance plan that’s weighted toward the physician owners. When designed well, this structure allows owners to direct a larger share of contributions to themselves while still providing staff with a solid, compliant benefit.

What Is the “Best” Retirement Plan for Your Practice?

The “best” plan depends on where your practice is today and what you’re trying to do next. Instead of looking for a single answer, it helps to think in tiers based on your size, profitability, and goals.

• Solo specialist or very small practice. If you don’t have employees, or only employ a spouse, a solo 401(k) typically gives you the most flexibility. You can combine salary deferrals with employer contributions to reach higher limits, and many plans include Roth and loan features. A SEP can still work if you want the simplest setup, but it’s usually more limited.
• Small practice with a growing team. Once you have a handful of employees, a 401(k) with a safe harbor provision and profit sharing tends to strike the right balance. You can maximize your own contributions, keep staff costs predictable, and offer a benefit that holds up against larger employers.
• Established, highly profitable group. If your practice generates consistent, high income and you want to save well beyond 401(k) limits, adding a cash balance plan on top of your 401(k) is often the next step. This structure allows for significantly larger tax-deferred contributions while keeping the additional cost of covering staff manageable.

The right fit comes down to aligning the plan with your cash flow, your team, and how aggressively you want to build wealth inside the practice.

Next Steps for Practice Owners

Turning this into something actionable starts with getting clear on the numbers and running the right comparisons.

1. Define how much you want to save each year per physician and how sustainable that is over time.
2. Build a staff census with ages and compensation. This drives what’s possible from a plan design standpoint.
3. Have a retirement plan specialist or third-party administrator model side-by-side options, such as a SEP, a 401(k), and a 401(k) paired with a cash balance plan.
4. Look beyond total cost. Focus on how contributions are split between owners and staff, and whether the benefit meaningfully supports retention.
5. Coordinate with your CPA and financial planner so the plan aligns with your entity structure, compensation strategy, and overall tax picture.

For most physician owners with employees, the long-term path centers on a well-designed 401(k). Once you’re consistently hitting those limits and still have excess cash flow, adding a defined benefit or cash balance layer often becomes the next move.

At IMA Financial Services, we work with physicians to design retirement strategies that fit both the practice and the life you’re building outside of it. Our goal is to help you put the right structure in place so more of what you earn stays working for you over time.