The Connecticut professional LLC
What creates it in Connecticut
Conn. Gen. Stat. § 34-243h(c) to (e), within the Connecticut Uniform Limited Liability Company Act (ch. 613a, §§ 34-243 to 34-283d), read with the definition of "professional service" at § 34-243a(24)
What the name must contain
§ 34-243h(e): the name of a limited liability company formed on or after July 1, 2017 to render professional services shall contain the words "professional limited liability company" or the abbreviation "P.L.L.C." or "PLLC". "Limited" may be abbreviated as "Ltd." and "company" as "Co.". The Secretary of the State's own Certificate of Organization instructions carry the same rule: professional LLCs must contain P.L.L.C., PLLC, or Professional Limited Liability Company.
Which occupations Connecticut says must use it
A closed enumerated list, and the two lists are not identical. For a professional corporation, § 33-182a(1) limits "professional service" to services rendered by dentists, naturopaths, chiropractors, physicians and surgeons, physician assistants, doctors of dentistry, physical therapists, occupational therapists, podiatrists, optometrists, nurses, nurse-midwives, veterinarians, pharmacists, architects, professional engineers (or jointly by architects and professional engineers), landscape architects, real estate brokers, insurance producers, certified public accountants and public accountants, land surveyors, psychologists, attorneys-at-law, licensed marital and family therapists, licensed professional counselors and licensed clinical social workers. For a PLLC, § 34-243a(24) repeats that list and adds licensed or certified alcohol and drug counselors. Mixed-profession entities are permitted only in the combinations spelled out: § 33-182a(2)(B) to (G) for corporations, § 34-243h(d)(1) to (3) for LLCs.
Connecticut also offers a corporation under a professional statute
A practice choosing between the two forms is choosing between these rules and the ones above.
What creates it in Connecticut
Conn. Gen. Stat. ch. 594a, §§ 33-182a to 33-182l (Professional Service Corporations). Organisation is under § 33-182c, and the corporation itself is formed for profit under ch. 601 (the stock corporation act), per § 33-182i.
What the name must contain
§ 33-182h: the corporate name shall contain the words "professional corporation" or the abbreviation "P.C.", and shall also contain either a word or words descriptive of the professional service to be rendered, or the last name of one or more present, prospective or former shareholders (or of persons associated with a predecessor organisation).
Does the agent requirement differ from an ordinary Connecticut LLC’s?
No. Connecticut sets no separate agent requirement for a professional entity — it is the same requirement an ordinary Connecticut LLC files under.
What else Connecticut requires
Connecticut does not publish a separate PLLC formation form. A professional LLC files the same Certificate of Organization as any other Connecticut LLC; the only visible difference on the form is the name designation. The July 1, 2017 date in § 34-243h(e) matters: the designator requirement attaches to companies formed on or after that date, which is when the Uniform Act took effect, so a professional LLC formed under the old ch. 613 may still be on the register as a plain LLC. Both forms are single-purpose: a professional LLC "will render only one specific type of professional services and services ancillary to such professional services and may not engage in any business other than" that (§ 34-243h(c)(2)), and a professional corporation is organised "for the sole and specific purpose of rendering professional service" (§ 33-182a(2)(A)). Each member of a professional LLC and each shareholder of a professional corporation must be licensed; § 33-182c(c) also bars an out-of-state licensee from being a shareholder, director or officer if that person unlawfully practises in Connecticut or directs a Connecticut licensee's professional judgment. Statutes and form read September 2026.
Verified against the Connecticut Secretary of the State, Business Services Division (business.ct.gov/-/media/BusinessOneStop/BSD_Forms/LLC---20211221/CERTIFICATE_OF_ORGANIZATION-fillable.pdf) · Statute text: www.cga.ct.gov/current/pub/chap_613a.htm (PLLC, ch. 613a) and https://www.cga.ct.gov/current/pub/chap_594a.htm (professional corporations, ch. 594a) · Last updated September 2026. Connecticut only — the rules in this cluster differ by jurisdiction, and this page speaks for no other.