Forming a Professional Limited Liability Company (PLLC) in Illinois: A Guide for Licensed Professionals

When starting a private practice or consulting firm, securing liability protection is a top priority. For most entrepreneurs, a standard Limited Liability Company (LLC) is the obvious choice. However, if your occupation requires a specialized state license to operate in Illinois, you cannot simply form a standard LLC. The state demands an extra layer of regulatory oversight to ensure that licensed professionals uphold ethical standards and maintain proper insurance. To meet these demands, you must establish a Professional Limited Liability Company (PLLC).

Navigating the intersection of state corporate laws and strict licensing board regulations can be incredibly complex. By searching our directory of US Lawyers, you can find a qualified Illinois business formation attorney to help you draft your operating agreements and ensure your new practice is legally compliant from day one.

Who is Legally Required to Form a PLLC?

In Illinois, the rule is straightforward: if the service you provide requires a professional license from the state, you must use a professional corporate structure. Under 805 ILCS 180/1-25(d) and the Professional Limited Liability Company Act, 805 ILCS 185/1, professionals such as physicians, dentists, attorneys, accountants, architects, and clinical therapists are explicitly required to form a PLLC or a Professional Service Corporation (PC) if they wish to operate as a corporate entity.

The purpose of this requirement is twofold. First, it ensures that only individuals licensed in that specific profession own and manage the company. A non-doctor cannot own shares in a medical PLLC. Second, while a PLLC protects your personal assets from general business debts (like a broken lease or a slip-and-fall in your lobby), it explicitly does not protect you from your own professional malpractice. If you commit malpractice, your personal assets can still be targeted, a standard upheld in various liability cases across the state.

The IDFPR Registration Process

Forming a PLLC in Illinois requires dealing with two separate government entities: the Secretary of State and the Illinois Department of Financial and Professional Regulation, Chicago (or their Springfield office). This makes the timeline longer than forming a standard LLC.

• Step 1: Check Licensing Status. Every member (owner) and manager of the PLLC must hold an active, valid Illinois license in the specific profession the company will practice.
• Step 2: File Articles of Organization. You must file Form LLC-5.5, Illinois, Secretary of State, Articles of Organization. On this specific form, you must check the box indicating it is a Professional LLC and list the exact professional service you will provide.
• Step 3: IDFPR Registration. After the Secretary of State approves your LLC, many professions require you to then register the new PLLC with the IDFPR to receive an entity-level professional license. For example, a medical practice must obtain a Medical Corporation license.

Requirements for Specific Professions

Different professional boards have unique restrictions on how a PLLC can be structured and named.

Physicians & Surgeons

Medical professionals face strict scrutiny. A medical PLLC can generally only be owned by licensed physicians (MDs or DOs). A chiropractor cannot co-own a PLLC with a neurosurgeon, as their licensing scopes differ. Furthermore, the name of the PLLC usually must contain the real name of one or more of the physician owners, or clearly state the medical specialty, ensuring patients are not misled about who is treating them.

Mental Health Therapists

Psychologists, Licensed Clinical Social Workers (LCSW), and Licensed Clinical Professional Counselors (LCPC) frequently form PLLCs for private practice. The IDFPR requires that the entity be registered and that all members hold the appropriate therapeutic licenses. This ensures that client confidentiality and therapeutic ethics remain controlled solely by licensed practitioners.

CPAs & Accountants

Certified Public Accountants must form a PLLC and register the firm with the IDFPR as a licensed CPA Firm. The firm itself must carry malpractice insurance, and the IDFPR requires proof that the firm has designated a specific, licensed managing partner who is responsible for the firm's compliance with state accounting standards.

Attorneys

Lawyers opening a firm in Illinois must form a PLLC or a PC. Unlike other professions regulated heavily by the IDFPR, attorney entities are regulated by the Illinois Supreme Court, Springfield under Ill. Sup. Ct. R. 721. Attorneys must register their PLLC with the Supreme Court and pay a separate annual registration fee to maintain their liability shield.

Standard Costs and Timelines

The base fee to file Articles of Organization for a PLLC with the state is $150. However, the secondary registration fees with the IDFPR vary wildly by profession, ranging from $50 to over $300. Because the IDFPR must verify the licenses of all members, forming a PLLC generally takes 3 to 6 weeks in Illinois, compared to the few days it takes to form a standard LLC.

Frequently Asked Questions (FAQ)