As an owner you have more choices than an employed dentist, because you can generally fund a plan as both employee and employer, and because a second plan can sometimes sit on top of the first. The tradeoff is consistent: the structures that allow the largest contributions also carry the most obligation toward eligible staff, the most administration, and the least flexibility in a bad year.

What any of it means for you this year is a question for your CPA and a plan administrator, since limits and eligibility rules are set annually and depend on your entity and your census. Ask what your ceiling is this year, and what it would be under a different plan design or a different structure.

What actually separates one plan from another?

Look at the axes underneath the names. Every plan you are shown differs along these lines.

• Who funds it. Some plans are funded only by the employer. Others accept employee deferrals plus an employer contribution.
• What staff inclusion looks like. Some designs require you to contribute for eligible employees in proportion to what you contribute for yourself. Others allow allocation formulas that weight contributions differently across groups.
• How much flexibility exists in a down year. Some employer contributions are committed annually. Others are discretionary and can be dialed back.
• How much administration it carries. Filing requirements, testing, and in some designs an actuary who calculates the funding target each year.
• How much can go in. Capacity rises with obligation and complexity. That relationship is the design conversation.

Ask any advisor proposing a plan to place their recommendation on each of those axes in plain language. If they cannot, they are selling a name rather than a design.

How do employees change the math?

Substantially, and this is where large contribution figures come apart.

Tax-advantaged plans come with fairness conditions attached, so the more you want to direct toward yourself, the more the design is likely to require for eligible staff. Which conditions apply, and how they land on your roster, is a question for a plan administrator working from your census.

Design carries real levers here. Eligibility periods, entry dates, vesting, and the allocation formula all change how dollars distribute among owners and employees. A plan built for your actual staff can look nothing like an off-the-shelf template, and that design work is where a competent administrator earns their fee.

Ask for an allocation illustration using your people, their ages, and their compensation. A generic example is not an answer.

What should you ask before setting one up?

• What is the total employer cost, including staff contributions and administration, for each dollar that lands in my account?
• What is the annual funding commitment, and what happens in a year when profit falls?
• Who administers the plan, what do they charge, and are those fees paid by the practice or out of plan assets?
• Am I paying an asset-based fee on investments inside the plan, and what is the all-in cost of the investments themselves?
• Is the person recommending this plan compensated differently depending on which plan I choose?

That last question is diligence, not cynicism. Some structures pay the person presenting them considerably more than others, and you are entitled to know that before signing.

What about the practice itself?

Many owners think of the eventual sale as the retirement plan, and the value is real. It is also concentrated in one asset, illiquid until a transaction, and tied to the same profession that produces your income.

The principle worth sitting with is diversification of source, not just of holdings. Money that depends on one practice in one market on one date carries the conditions of that date. Money accumulated steadily elsewhere does not.

Plan selection carries tax and compliance consequences specific to your practice. Work the details through with your own CPA and administrator.

FAQ

Can I use an owner-only plan if I have staff?
Once you have eligible non-owner employees, that option generally closes, and who counts as eligible turns on service and hours in ways that surprise owners. If your practice has grown since the plan opened, revisit that eligibility question with your administrator rather than assuming.

Are the highest-capacity plans only for high earners?
Income matters less than stability. These designs generally expect funding in most years, including weak ones, so inconsistent profit makes them uncomfortable regardless of how good the strong years look. The commitment, not the ceiling, is the real filter.

Do I have to contribute for my team every year?
It depends entirely on the design you choose. Some employer contributions are committed annually while others remain discretionary. The flexibility you will want during a difficult year is a decision made at setup, not something you can reach for mid-year.