PLLC vs. LLC: What's the Difference and Which One Do You Need?

A PLLC (Professional Limited Liability Company) is a specialized version of an LLC available only to licensed professionals — think doctors, lawyers, accountants, and architects. Both structures offer liability protection and pass-through taxation, but a PLLC adds membership restrictions and doesn't shield you from your own professional malpractice claims.

A Limited Liability Company (LLC) is a business entity that separates your personal finances from your business finances. If the business gets sued or takes on debt, your personal assets — your home, savings, car — aren't on the hook. The IRS doesn't treat an LLC as its own tax category; instead, it defaults to pass-through taxation, meaning profits and losses flow to your personal tax return.

Anyone can form an LLC — there are no federal restrictions on who can be a member. Individuals, corporations, other LLCs, and foreign entities can all hold membership. That flexibility is one reason the LLC is the most common business structure for small business owners in the United States.

A Professional Limited Liability Company (PLLC) is a type of LLC designed for licensed professionals whose work is regulated by a state licensing board. It works like a standard LLC in most ways — same pass-through taxation, same basic structure — but membership is restricted to people who hold the required professional license in the state where the PLLC is formed.

Not every state allows PLLCs, and the professions that qualify vary by state. Common professions that can form a PLLC include doctors, dentists, lawyers, CPAs, architects, engineers, pharmacists, psychologists, chiropractors, social workers, veterinarians, and real estate agents. If your state doesn't specify which professions qualify, check with your Secretary of State.

• Doctors and dentists

• Lawyers and attorneys

• CPAs and accountants

• Architects and engineers

• Pharmacists and psychologists

• Chiropractors and social workers

• Veterinarians

• Real estate agents (in states that permit it)

A PLLC and an LLC share the same core structure — both are formed by filing articles of organization with the state, both offer limited liability protection, and both default to pass-through taxation. The differences come down to who can be a member, what the liability protection covers, and which states allow the structure.

Side-by-side comparison

Both structures protect your personal assets from general business debts and lawsuits — that's the core promise of limited liability. But a PLLC doesn't protect you from claims tied to your own professional negligence. If a patient sues you for malpractice, or a client sues you for bad legal advice, you're personally on the hook for that claim regardless of your PLLC status.

There's one meaningful upside to the PLLC structure in a multi-member practice: one member's malpractice doesn't create liability for the other members. If your business partner makes a professional error, your personal finances aren't fair game for that claim. That cross-protection is one of the main reasons licensed professionals in group practices choose a PLLC over a general partnership.

The IRS doesn't recognize either LLCs or PLLCs as separate tax classifications. Both default to pass-through taxation — profits and losses flow through to the members' personal tax returns. A single-member LLC or PLLC is taxed like a sole proprietorship. A multi-member LLC or PLLC is taxed like a partnership.

Both structures can also elect to be taxed as an S Corporation by filing Form 2553 with the IRS. For profitable businesses, an S Corp election can reduce self-employment taxes by allowing owners to split income between a salary and distributions. A tax professional can help you figure out whether that election makes sense for your situation. Some states also treat PLLCs differently from LLCs for state tax purposes, so it's worth checking your state's rules.

If you're a licensed professional in a state that allows PLLCs, the choice often isn't optional — some states require licensed professionals to form a PLLC rather than a standard LLC. Check with your state's licensing board and Secretary of State to find out whether your profession is required to use the PLLC structure.

If you're not a licensed professional — or if your state doesn't offer PLLCs — a standard LLC is the right structure. It gives you the same liability protection and tax flexibility without the membership restrictions. Most entrepreneurs starting a business that doesn't require a state professional license will form a standard LLC. A legal professional can help you figure out which structure your state requires for your specific profession.