Entity Structures Spoke · Massachusetts · 2026

What entity should your ABA practice use in Massachusetts?

A standard LLC. Massachusetts licenses behavior analysts, but its professional corporation statute reaches an unlisted profession only if that profession's board channels it into the form or the licensee elects it, and the Board of Allied Mental Health has done neither. The professional form is available to a licensed applied behavior analyst who wants it, and a non-licensee may own an LLC that employs them. Add a psychologist and the enumerated-profession rules take over for that component.

Important · This is not legal advice

This page is general educational information about Massachusetts entity, corporate, and licensing law as it affects applied behavior analysis practices. It is not legal, tax, or business advice, it does not create an attorney-client relationship, and it is not a substitute for advice from a Massachusetts attorney or qualified healthcare regulatory counsel. Massachusetts ties the professional form to each regulating board's rules, which can change. Verify current requirements with the Secretary of the Commonwealth, the Board of Registration of Allied Mental Health and Human Services Professions, and qualified counsel before forming an entity, and do not rely on anything here as a substitute for that advice.

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Verdict for Massachusetts
Default to a standard LLC. Massachusetts defines "professional service" as an enumerated list of professions plus any other licensed service, but only "if the applicable regulating boards permit the licensed person to incorporate his profession under this chapter, or if such licensed person elects to" and the board has not prohibited it. Behavior analysis is not on the list, and the Board of Allied Mental Health has adopted no rule on the form or ownership of a licensee's practice. So the professional form is an election, not a requirement, and a non-licensee may own the LLC.

Massachusetts licenses applied behavior analysts and assistant applied behavior analysts under the allied mental health chapter (M.G.L. c. 112, §§ 163 to 172; 262 CMR 10.00), administered by the Board of Registration of Allied Mental Health and Human Services Professions. The Professional Corporation Act lists the professions it reaches directly, "registered physicians and surgeons, chiropractors, podiatrists, engineers, electrologists, physical therapists, psychologists, certified public accountants, public accountants, dentists, veterinarians, optometrists acupuncturists and registered nurses," and attorneys, and then extends to "any other type of service which may be rendered only pursuant to a license" on the condition quoted above (M.G.L. c. 156A, § 2(b)). The LLC Act applies its professional-services requirements to an LLC "organized to render a professional service as defined in section two of chapter one hundred and fifty-six A," including a regulating-board certificate of compliance "with any eligibility standards established by such regulating board" (M.G.L. c. 156C, § 6(c)). The Board's ABA rules address licensure, supervision, and conduct and set no such standards (262 CMR 10.00; 262 CMR 8.04).

Is ABA licensed?
Yes (c. 112, 163 to 172)
Pro entity required?
No; elective
Prevailing form
Standard LLC
Who can own
Non-licensee may own

Is ABA a licensed profession in Massachusetts, and under which board

Yes. Massachusetts licenses applied behavior analysts and assistant applied behavior analysts under the allied mental health and human services chapter, alongside mental health counselors, marriage and family therapists, rehabilitation counselors, and educational psychologists, administered by the Board of Registration of Allied Mental Health and Human Services Professions (M.G.L. c. 112, §§ 163 to 172; M.G.L. c. 13, §§ 88 to 90). The Board's rules for the profession set education, experience, and examination requirements (262 CMR 10.00, effective June 5, 2015) and standards of conduct including supervision of assistants (262 CMR 8.04). The Board is not the Board of Registration of Psychologists, and that separation is where the entity analysis starts. The licensure mechanics are on the Massachusetts licensing and credentialing page.

Massachusetts offers a professional corporation under c. 156A and a professional LLC under c. 156C, and both are available to a licensed applied behavior analyst by election. Neither is required, because the statute makes the form for an unlisted profession depend on the regulating board, and the Board of Allied Mental Health has said nothing.

EntityAvailable for ABA?Who may own itWhen to use it
Standard LLC
(M.G.L. c. 156C)
Yes; the prevailing formOpen; a non-licensee may ownThe default for a pure ABA practice. Not "organized to render a professional service" in the c. 156A sense unless the licensee elects the professional form.
Professional LLC
(M.G.L. c. 156C, § 6(c))
Yes; by electionLicensed members, per any regulating-board standardsAvailable to a licensed applied behavior analyst who wants the professional form; requires a board certificate at organization.
Professional corporation (PC)
(M.G.L. c. 156A)
Yes; by electionPersons licensed to render a service permitted by the articles (§ 10(a))The corporate professional form; may render "one or more professional services" (§ 2(a)).
Business corporation
(M.G.L. c. 156D)
YesOpenAn alternative to the LLC for tax or investor reasons.
Management company (MSO)Companion entityOwned by founders or investorsOptional for ABA-only; relevant where a psychology or medical component is added.

Can a behavior analyst form the professional entity

Yes, by election. Behavior analysis is not among the professions c. 156A names, so it reaches the Act through the second limb of the definition: "any other type of service which may be rendered only pursuant to a license pursuant to the laws of the commonwealth, if the applicable regulating boards permit the licensed person to incorporate his profession under this chapter, or if such licensed person elects to incorporate his profession under this chapter and such incorporation is not prohibited by law or by regulations of the applicable regulating board" (M.G.L. c. 156A, § 2(b)(ii)). Read closely, that clause does two things. It makes the professional form available to a licensed applied behavior analyst who elects it, since the Board has not prohibited it. And it makes the form optional, since the trigger is the licensee's election, not the license. "One or more individuals, each of whom is licensed to perform a professional service, may organize a professional corporation" (§ 7); the verb is "may." The same election drives the professional LLC, because c. 156C applies its professional-services requirements only to an LLC "organized to render a professional service as defined in section two of chapter one hundred and fifty-six A."

Massachusetts does not ask whether a profession is licensed. It asks whether the profession is on the list, and if not, whether its board has spoken. Psychology is on the list. Behavior analysis is not, and its board has not spoken.

Who is allowed to own it

For an ABA-only practice, anyone, through a standard LLC. Massachusetts has no general corporate-practice statute reaching non-physician professions, the Board of Allied Mental Health has adopted no rule on the entity its licensees practice through or who may own it, and c. 156A's ownership rule, shares only to persons "licensed in the commonwealth or in any other state" to render a service permitted by the articles (§ 10(a)(1)), applies only to a corporation organized under c. 156A. A non-licensee may own the LLC and take distributions. The professional form, if elected, restricts ownership to licensees and requires a regulating-board certificate at organization, and it is the licensee's choice to enter that regime. Clinical control belongs to the licensed behavior analysts regardless, because practicing applied behavior analysis is a licensed act under c. 112.

Where the two archetypes split

The split runs through the enumerated list. Psychologists are named in c. 156A, § 2(b)(i), so psychology is a professional service without any election, and the Board of Registration of Psychologists' rules on practice through entities govern any entity that renders it. A practice that adds an in-house psychologist for diagnostic evaluations therefore has a component that is inside the professional-entity regime by statute, and that component's ownership is controlled by that board's rules rather than by the ABA board's silence. Two features of Massachusetts law soften what is elsewhere a hard fork. First, c. 156A permits a professional corporation "for the purpose of rendering one or more professional services" (§ 2(a)) and issues shares to persons licensed to render "a professional service permitted by the articles" (§ 10(a)(1)), so a combined psychology-and-ABA professional corporation is possible in form if both boards' rules permit it. Second, because the ABA side is outside the regime, the practice can also run the ABA LLC and a separate psychology entity in parallel with a management company serving both. Which structure is right depends on the psychology board's current rules and on whether a non-licensee is in the ownership picture; a non-licensee cannot own the psychology component under either structure.

The regulating-board hinge in c. 156A and c. 156C

Massachusetts built its professional-entity law around a hinge: "regulating board," defined as "a board or governing authority which is charged with licensing and regulating the profession of any person performing a professional service" (c. 156A, § 2(c)). For unlisted professions, the board decides whether the professional form is permitted, required, or prohibited. For any professional LLC, the certificate of organization must attach "a certificate by the applicable regulating board which indicates compliance as of the date of organization or registration by the members and managers with any eligibility standards established by such regulating board" (c. 156C, § 6(c)(iii)). The Board of Allied Mental Health has established no eligibility standards for entities and has issued no rule on practice structure; its ABA chapter is licensure requirements and its conduct chapter is supervision and professional conduct. The practical consequences: an ABA-only practice is outside the regime unless it opts in; a licensee who opts in should expect the Board to have no established process for the c. 156C certificate and should engage it early; and a Board rule on practice structure, adopted under its c. 13 authority, would move this analysis. Watch the Board's rulemaking.

Naming the entity

A Massachusetts LLC name must contain "limited liability company," "limited company," or the abbreviation "L.L.C.," "L.C.," "LLC," or "LC" (M.G.L. c. 156C, § 3), and must be distinguishable on the Secretary of the Commonwealth's records; no professional designator is required for a standard LLC or, on the statute's face, for a professional LLC, which is identified by the professional services stated in its certificate of organization rather than by its name. A professional corporation's name must end with "Professional Corporation," "Corporation," or "Incorporated," or the abbreviation "P.C.," "Corp.," or "Inc." (M.G.L. c. 156A, § 8). Clear the name with the Secretary of the Commonwealth before filing.

Why choosing the entity is only half the question

Picking the form is one decision. Who may own it, and how outside capital comes in, is the other, and in Massachusetts both are open for ABA-only practice. The management company earns its place when a psychology or medical component enters the structure, and at the transaction stage, where Massachusetts operates one of the country's more demanding health care transaction notice regimes through the Health Policy Commission, a subject for the ownership page rather than this one.

Read next: Do you need an MSO for your ABA practice in Massachusetts?

Tax treatment as a separate layer

Entity form and tax classification are separate choices. A Massachusetts LLC is taxed by default as a sole proprietorship or partnership depending on the number of members and can elect corporate or S-corporation treatment; a professional corporation is a corporation unless it makes an S election, and Massachusetts imposes its own corporate excise on entities taxed as corporations, including S corporations above a receipts threshold. Decide the tax layer with a Massachusetts tax adviser.

Multistate practice and foreign qualification

If you operate beyond Massachusetts, the Massachusetts LLC is only your home-state piece. To deliver services in another state you generally register there as a foreign entity and meet that state's own ownership and entity rules. Connecticut, next door, is open for ABA on similar closed-list reasoning; New York is not, and a Massachusetts LLC owned by a non-licensee cannot simply qualify there. Multistate groups usually standardize on a structure that satisfies the strictest state in the footprint rather than the most permissive. See the practice expansion and sale page for the multistate view.

How this connects to the rest of your compliance stack

Entity choice is one layer. Others interact with it:

Forming the entity in Massachusetts: the sequence

  1. License the practitioners. Applied behavior analysts and assistants licensed by the Board of Allied Mental Health under c. 112, §§ 163 to 172.
  2. Decide the archetype. ABA-only, or ABA plus in-house psychology. The second answer brings the psychology board's rules and the enumerated-profession regime into the plan.
  3. Form the ABA entity. A standard LLC by certificate of organization with the Secretary of the Commonwealth; no board certificate is required unless the professional form is elected.
  4. Clear the name. Ordinary LLC designator; check availability before filing.
  5. Adopt an operating agreement. Set ownership and management, and reserve clinical authority to a licensed applied behavior analyst clinical director.
  6. If diagnostics are in-house, structure the psychology component. Either a combined professional corporation if both boards permit, or a separate psychology entity with a management company; confirm with counsel.
  7. Watch the Board. A Board of Allied Mental Health rule on practice structure or eligibility standards would change this analysis.

Massachusetts entity variables at a glance

VariableMassachusetts value
Is ABA a licensed profession?Yes; M.G.L. c. 112, §§ 163 to 172; Board of Registration of Allied Mental Health and Human Services Professions; 262 CMR 10.00
Is a PLLC available?Yes, by election (c. 156C, § 6(c)); requires a regulating-board certificate at organization
Professional corporationAvailable by election for unlisted professions (c. 156A, § 2(b)(ii), § 7)
Is ABA an enumerated profession?No; psychology is (c. 156A, § 2(b)(i))
Who may own a professional entityPersons licensed to render a service permitted by the articles (c. 156A, § 10(a)); regulating-board standards for a PLLC
Board entity rule for ABANone; 262 CMR 10.00 and 8.04 address licensure, supervision, and conduct only
Ownership flexibility for ABAOpen; a non-licensee may own the standard LLC
Multi-profession entityA c. 156A corporation may render "one or more professional services"; a psychology component is governed by the psychology board's rules
Management companyOptional for ABA-only; relevant for a psychology component and at the transaction stage
NamingOrdinary LLC designator; PC designator under c. 156A, § 8
Key authoritiesM.G.L. c. 156A, §§ 2, 7, 8, 10; c. 156C, § 6(c); c. 112, §§ 163 to 172; c. 13, §§ 88 to 90; 262 CMR 8.04, 10.00

Frequently asked questions

Do I need a professional LLC or PC to run an ABA practice in Massachusetts?
No. Behavior analysis is not an enumerated profession under c. 156A, and for unlisted professions the professional form applies only if the regulating board permits it or the licensee elects it. The Board of Allied Mental Health has adopted no rule on the matter. A standard LLC is the form.
Can a non-licensee own my Massachusetts ABA practice?
Yes, through a standard LLC. The c. 156A ownership rule applies only to corporations organized under that chapter, and the ABA board has no ownership rule. Clinical control stays with the licensed behavior analysts because practice is a licensed act.
Can a licensed applied behavior analyst form a PC or PLLC if they want one?
Yes, by election under c. 156A, § 2(b)(ii), since the Board has not prohibited it. Expect the Board to have no established process for the c. 156C certificate of eligibility-standards compliance, because it has set no standards; engage it early.
What changes if I add a psychologist for diagnostic evaluations?
Psychology is enumerated in c. 156A, so that component is inside the professional-entity regime by statute and governed by the psychology board's practice rules. A combined professional corporation rendering both services is possible in form if both boards permit; otherwise a separate psychology entity with a management company. A non-licensee cannot own the psychology component.
Could the Board make the professional form mandatory?
Yes. The statute defers to the regulating board, so a Board of Allied Mental Health rule requiring its licensees to practice through professional entities, or setting eligibility standards for entity owners, would change the answer. None exists as of this page.

Where professional advice is essential, not optional

Massachusetts is open for a pure ABA practice, and the statute is unusually explicit about why: the regulating board decides, and this board has not. The places to spend counsel's time are confirming the Board's rule text at formation, the psychology board's rules if a psychologist joins the structure and whether a combined professional corporation is permitted, the transaction notice regime before any sale, and the corporate excise if a corporate form is chosen. Confirm the form, the ownership, and the tax treatment with a Massachusetts attorney and a tax adviser before you file.

The governing authorities to know are the Professional Corporation Act (M.G.L. c. 156A, with the definition and regulating-board hinge at § 2, organization at § 7, naming at § 8, and ownership at § 10), the LLC Act's professional-services provision (M.G.L. c. 156C, § 6(c)), the allied mental health licensure chapter (M.G.L. c. 112, §§ 163 to 172) and the Board's ABA rules (262 CMR 10.00 and 8.04).

Confirm current requirements directly

This page describes general patterns in a regulatory environment that changes. The Secretary of the Commonwealth, the Board of Registration of Allied Mental Health and Human Services Professions, the Board of Registration of Psychologists, and qualified counsel provide current requirements. Neither this page nor any secondary source should be relied on in place of direct verification with the relevant authorities and counsel.

Last updated August 2026. Massachusetts's professional-entity statutes defer to regulating boards, and a board rule on practice structure would change this analysis. Nothing here is legal, tax, or business advice. Consult qualified Massachusetts counsel and a tax adviser before making entity, ownership, or tax decisions.