I have worked with therapists and mental health professionals for a long time.
One thing comes up more than almost anything else: a practice reaches real profitability and the therapist is still running it under the same structure they defaulted into on day one.
Usually that means sole proprietorship… No liability protection, and paying self-employment tax on every dollar of profit. In most cases, nobody ever sat down with them and explained there was a smarter way to set things up.
Entity structure does not come up when you are starting out. You are focused on getting clients, staying current on your CEUs, and figuring out whether to take insurance. The legal and financial side of the business gets dealt with later, or not at all.
While that is fine early on, it starts costing you money once your practice is profitable.
This article covers what entity structure means, which options make the most sense at different stages, and how to know when it’s time to make a change.
What Business Entity Structure Means for Your Practice
Your business entity structure is the legal form your practice takes in the eyes of the IRS and your state government. It determines how your income gets taxed, whether your personal assets are exposed if something goes wrong in the practice, and what ongoing compliance you are responsible for.
The most common structures for therapy practices in the U.S. are:
- Sole Proprietorship: no federal registration required, though most states and localities require a business license, and a DBA filing if you practice under a name other than your own; income reported on Schedule C of your personal tax return
- LLC or Professional LLC (PLLC): creates legal separation between your personal assets and the practice, with flexible tax treatment; single-member LLCs are taxed like a sole proprietorship by default
- S Corporation: you pay yourself a reasonable W-2 salary subject to payroll taxes, and take remaining profit as distributions not subject to self-employment tax; most beneficial above $80,000 in net income
- Professional Corporation (PC): required in some states depending on your license type; ownership is restricted to licensed individuals, and it can elect S Corporation tax treatment
- General Partnership or Limited Liability Partnership (LLP): the default structure when multiple people run a practice together; an LLP adds personal liability protection that a General Partnership does not provide
Each of these involves different tradeoffs, and none of them is right or wrong in isolation. What matters is whether the structure you are in today still makes sense for the practice you are running today. For a lot of therapists, it does not.
Sole Proprietorship: Simple at First, Costly as You Grow
Most therapists start as sole proprietors, and that is not a mistake.
When income is modest and margins are thin, the simplicity is genuinely valuable. No separate tax return, no payroll to run, no complicated filings. Your profit goes on Schedule C and rolls into your 1040.
The problem surfaces as income grows. As a sole proprietor, you pay self-employment tax of 15.3 percent on your entire net profit.
That covers both the employee and employer portions of Social Security and Medicare, because when you are self-employed, you are both.
In 2026, Social Security tax applies to the first $184,500 of net earnings. Medicare applies to everything, with an additional 0.9 percent surtax above $200,000 for single filers.
There is also a liability issue that is easy to overlook. A sole proprietorship creates no legal separation between you and your business. Your personal savings, your home, your personal investments are all exposed if your practice faces a lawsuit or a financial claim. Malpractice insurance helps, but it does not cover every situation.
Once net profit is consistently above $50,000 to $60,000 per year, it’s time to think whether a different structure would serve you better.
The LLC: A Practical First Move for Most Private Practice Therapists
For therapists ready to make their first structural change, forming an LLC or a Professional LLC is usually the right starting point.
The most important thing an LLC does is create a legal wall between your practice and your personal finances. If a claim is made against your practice, your personal assets are behind that wall. That protection is real, and it does not require you to change anything about how you actually see clients or run your day-to-day operations.
From a tax standpoint, a single-member LLC does not change your federal treatment on its own. The IRS treats it as a disregarded entity by default, so income still flows to your personal return the same way it does as a sole proprietor. What the LLC does is open the door to electing S Corporation tax treatment, which is where the meaningful savings tend to come in for practices generating real profit.
One thing to keep in mind before you file anything: many states require licensed mental health professionals to form a Professional LLC rather than a standard LLC.
The difference matters for your license and for the legal validity of the entity. Check with your state licensing board or an attorney familiar with your state’s requirements before you move forward.
The S Corporation: Where Profitable Practices Can Save the Most on Taxes
For established therapy practices with strong net income, electing S Corporation status is often the most impactful tax planning move available.
Here is how it works.
As an S Corporation owner, you pay yourself a W-2 salary as an employee of your own practice. Self-employment and payroll taxes apply only to that salary.
The remaining profit above your salary flows to you as a shareholder distribution. That distribution is still taxable income, but it is not subject to the additional 15.3 percent in payroll taxes.
To put real numbers to it: if your practice nets $140,000 and you pay yourself a salary of $75,000, payroll taxes apply to the $75,000 salary only.
The remaining $65,000 in distributions avoids that layer of tax. That difference adds up significantly over time.
The IRS does require that your salary be reasonable for your role and your market. It cannot be artificially low. But with proper guidance, you can land on a number that is defensible and still genuinely tax-efficient.
S Corporation status comes with real administrative requirements:
- You must run actual payroll with proper withholding and quarterly tax filings
- A separate Form 1120-S must be filed with the IRS each year
- The S Corp election generally needs to be filed by March 15 to take effect for the current tax year
- For practices netting under $60,000, the administrative costs often outweigh the tax savings; above $80,000, the math typically works in your favor
It is not the right move for every practice, and it requires ongoing attention to maintain correctly. But for a profitable solo or small group practice, it has strong merits.
Group Practices: More Owners Means Higher Stakes
Everything above applies to solo practices. When there are multiple owners involved, the structural conversation gets more complex and the cost of getting it wrong gets higher.
The most common issue I see in multi-therapist practices is not choosing the wrong entity. It is not formalizing the arrangement at all. Two or more therapists go into practice together, share expenses, and assume things will work out as they go.
That works until something changes. Perhaps one partner wants to scale back, there is a disagreement about a hire, or someone wants to exit. Without a formal structure and a written agreement, those moments get difficult fast.
General Partnerships and LLPs
A General Partnership is what exists by default when two or more people run a business together without forming a legal entity.
Each partner shares in the profits, management responsibilities, and personal liability for the partnership’s obligations. That unlimited personal liability is significant exposure for any professional practice.
A Limited Liability Partnership protects each partner from personal liability for another partner’s negligence or misconduct. Income still flows through to each partner’s personal return. It is a cleaner structure for multi-owner practices and is widely used in professional services.
Professional Corporations
A Professional Corporation is specifically designed for licensed professionals and is required in many states for therapists who want to incorporate. Ownership is restricted to licensed individuals.
A PC can elect S Corporation tax treatment, which combines the liability protections of incorporation with the pass-through tax advantages of an S Corp. If you are building a multi-owner practice and considering a corporate structure, that combination is often the most tax-efficient path, though it involves more compliance overhead.
Any multi-owner practice, regardless of entity type, needs a written operating or partnership agreement. It does not need to be complicated, but it does need to address ownership percentages, profit sharing, decision-making authority, and how an exit works.
What Changed in 2026 and Why It Matters for These Decisions
The tax landscape in 2026 shifted in a few ways that are directly relevant to entity structure decisions for therapy practice owners.
The Qualified Business Income deduction under Section 199A has been made permanent. This provision allows eligible pass-through business owners to deduct up to 20 percent of qualified business income. It was previously set to expire, which made long-term planning uncertain. Now it is a stable part of the tax code. Sole proprietors, LLC owners, S Corp shareholders, and partnership members can all potentially benefit.
There is also a new minimum QBI deduction for taxpayers with at least $1,000 in qualified business income, which extends access to smaller practices that might not have benefited before.
The SALT deduction cap has been raised from $10,000 to $40,000 through 2028. If you practice in a high-tax state, this affects your overall federal tax picture and is worth factoring in when you look at how your entity structure interacts with your personal taxes.
Standard deductions also increased for 2026: $16,100 for single filers and $32,200 for married filing jointly. That affects whether itemizing makes sense personally, which is part of the broader picture a good accountant will look at alongside your business structure.
Finally, the Social Security wage base for 2026 is $184,500, which is the number S Corp owners need when calculating the right salary-to-distribution split.
None of this demands immediate action. But if your practice is profitable and your structure has not been reviewed in a while, now’s a good time to take a fresh look.
The Bottom Line
Entity structure is not something most therapists think about often. It is not the interesting part of running a practice. But it is one of the highest-leverage financial decisions a profitable practice owner can make, and it is one that too many therapists put off because the topic never came up at the right time.
The right structure depends on your income level, your state, your license type, whether you have partners, and what your goals are. There is no single answer that fits everyone, which is why consulting with an expert this space is worth more than any general guide.
At Leichter CPA, we work with therapists and mental health professionals across the U.S.
If you want to talk through your current structure or find out whether a change makes sense for your practice, our mental health practice accounting services are built around exactly these kinds of decisions.