Running a medical or dental practice means wearing two hats at once — clinician and business owner. The clinical side gets most of the attention, but the business decisions you make, particularly around entity structure and retirement planning, can have just as much impact on your long-term financial health as your patient outcomes. Get these two areas right, and you can meaningfully reduce your tax burden, protect your personal assets, and build a retirement that reflects decades of hard work. Get them wrong, and you may be leaving significant money on the table — or worse, exposing yourself to unnecessary liability.
This post walks through the key entity structure options for practice owners and the retirement plan strategies that pair well with each, so you can have a more informed conversation with your CPA and financial advisor.
Why Entity Structure Matters More for Healthcare Practices
Every business needs to choose a legal structure, but for medical and dental practices, the stakes are higher for a few reasons. First, most states require licensed professionals to operate under specific structures — often a Professional Corporation (PC) or Professional Limited Liability Company (PLLC) — rather than a standard LLC or corporation. Second, liability exposure in healthcare is significant, and the right structure can help shield personal assets from business-related claims (though it won't protect you from personal malpractice liability, which is a separate consideration handled through insurance). Third, the tax treatment of your entity directly affects how much you can contribute to retirement plans and how those contributions are taxed.
Common Structures for Practice Owners
Professional Corporation (PC) taxed as an S-Corp This is one of the most common structures for solo and small group practices. It allows the owner to split income between a reasonable salary (subject to payroll taxes) and distributions (not subject to self-employment tax), which can create meaningful tax savings compared to a sole proprietorship. It also opens the door to more sophisticated retirement plan design, since W-2 wages are the basis for many contribution calculations.
Professional Limited Liability Company (PLLC) Popular in states that permit it, a PLLC offers liability protection similar to a PC but with more flexibility in management structure and profit distribution among partners. Tax treatment can be elected as a partnership, S-corp, or in some cases C-corp, so the "right" answer depends on the number of owners and their income levels.
Partnership or Multi-Member Structure For group practices with multiple owners, a partnership structure (or multi-member PLLC taxed as a partnership) allows for flexible allocation of income, losses, and retirement contributions among partners, but it requires a well-drafted partnership agreement to avoid disputes down the road, especially around buy-in, buy-out, and succession terms.
C-Corporation Less common today due to double taxation, but occasionally used in specific situations involving fringe benefits or multi-entity planning (for example, separating the practice from a real estate holding company). This structure requires careful analysis before adoption.
The right choice depends on your income level, number of owners, growth plans, and how you want to structure compensation and benefits. This is not a decision to make based on what a colleague did — practices with different patient volumes, staffing models, and ownership structures often need different answers.
How Entity Structure Shapes Your Retirement Options
Once your entity structure is set, it becomes the foundation for retirement plan design. Here's how the pieces typically fit together.
SEP IRA
A Simplified Employee Pension (SEP) IRA is easy to set up and administer, making it attractive for solo practitioners or very small practices. Contributions are employer-only, capped at a percentage of compensation, and must be made proportionally for any eligible employees. The simplicity is appealing, but the contribution limits are lower than what many high-earning practice owners could achieve with a more customized plan.
Solo 401(k)
For practice owners with no employees (or only a spouse on payroll), a Solo 401(k) allows for both employee deferrals and employer contributions, often resulting in significantly higher total contributions than a SEP IRA at the same income level. It also allows for a Roth option in many cases, which can be valuable for tax diversification in retirement.
401(k) with Profit Sharing
Group practices with staff often adopt a traditional 401(k) plan paired with a profit-sharing component. This structure allows owners to maximize their own contributions while satisfying nondiscrimination testing requirements that ensure the plan doesn't disproportionately benefit highly compensated employees. Thoughtful plan design — including features like new comparability profit-sharing formulas — can help owners and physicians take home a larger share of contributions relative to staff, within IRS rules.
Cash Balance Plans
For practice owners in their 40s, 50s, or later who are behind on retirement savings and have strong, stable cash flow, a cash balance plan layered on top of a 401(k) can allow for dramatically higher tax-deferred contributions — sometimes well over $200,000 to $300,000 per year depending on age and compensation. These plans function like a traditional pension and require actuarial calculations and a real commitment to funding, so they work best for practices with predictable income.
Defined Benefit Plans
Less common but occasionally appropriate for very high-income, later-career practice owners looking to catch up on retirement savings quickly, defined benefit plans offer the highest possible contribution limits of any qualified plan structure, with corresponding administrative complexity and cost.
Bringing It Together: A Practical Approach
The practices that get the most value out of this planning tend to follow a similar process:
- Start with the entity structure conversation. Confirm your current structure still makes sense given your income level, number of owners, and growth trajectory. This should be revisited every few years, not set once and forgotten.
- Layer in retirement plan design based on your stage. A new practice owner with high student loan debt has different priorities than an owner 10 years from retirement trying to maximize catch-up contributions.
- Account for staff costs and compliance testing. Any plan involving employees needs to be tested for nondiscrimination, and staff contribution costs need to be modeled before you commit to a plan design.
- Coordinate with your financial advisor. Entity structure and retirement plan design work best when your CPA and financial advisor are looking at the same numbers and talking to each other, not operating in silos.
- Revisit annually. Tax law changes, practice growth, new partners, and shifts in personal financial goals all warrant a fresh look at whether your current structure and plan design still fit.
The Bottom Line
Entity structure and retirement planning aren't one-time decisions — they're ongoing strategic tools that should evolve alongside your practice. The tax savings and long-term wealth-building potential of getting this right are substantial, often amounting to tens of thousands of dollars annually in tax savings and retirement contributions for established practices.
If it's been more than two or three years since you've had a comprehensive review of your entity structure and retirement plan design, now is a good time to schedule one. A proactive review, done well before year-end, gives you time to implement changes before they're locked in for the current tax year.
This article is for general informational purposes and does not constitute tax, legal, or financial advice specific to your practice. Contact our office to discuss how these strategies apply to your situation.