LLC vs LLP vs PLLC: Which Partnership Structure?
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2. Professional Practice Requirements
PLLC, LLP, and licensing board mandates
Licensed professionals have additional structural requirements imposed by state licensing boards. A lawyer, CPA, architect, or doctor cannot simply form a regular LLC and call it done. Professional licensing boards mandate PLLC (Professional Limited Liability Company) or LLP status for liability protection.
Professional Structure Requirements by State
Law Firms
Most states require LLP, PLLC, or PC (Professional Corporation). Some states allow Law Partnership but with reduced liability protection. Single-attorney practices typically use PLLC or LLC (where permitted).
CPA Firms & Accounting Practices
State Board of Accountancy typically requires PLLC or LLP for multi-partner practices. Solo CPAs may use PLLC, LLC (if permitted), or PC depending on state rules. AICPA recommends PLLC or LLP for liability protection.
Medical Practices & Dentistry
Medical licensing boards typically permit PLLC, LLP, or Medical Professional Service Corporation. Some states allow PLLC; others restrict to LLP or PC. Telemedicine and concierge practices may have additional restrictions.
Architecture & Engineering
Most states require PLLC or LLP for multi-partner firms. Solo architects may use PLLC, PC, or in some cases LLC. Verify with your state licensing board; rules vary significantly.
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3. Liability Protection & Personal Asset Shield
How LLC, LLP, and PLLC differ in protecting personal assets
All three structures (LLC, LLP, PLLC) provide liability protection, but the scope and strength vary by situation and state law. The key difference: in an LLP, general partners may retain some personal liability for the partnership's debts, while limited partners are fully protected.
LLC Liability Protection
- All members have full liability protection
- Personal assets shielded from business debts
- Not liable for other members' malpractice
- Veil-piercing if formalities not maintained
LLP Liability Protection
- Limited partners: full liability protection
- General partners: may retain some liability
- Protected from malpractice of other partners
- Limited partner passive role enforced by law
Important: Malpractice Liability Still Applies
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4. Management & Ownership Flexibility
How control and decision-making differ across structures
Management structure affects day-to-day control and how ownership is organized. LLCs offer the most flexibility; LLPs have stricter roles for general and limited partners.
LLC: Member-Managed vs Manager-Managed
Member-Managed: All owners participate in day-to-day decisions. Flexible, no designated managers needed. Good for small teams where all partners are active.
Manager-Managed: Designated managers (who may be non-members) run the business. Owners can be passive investors. Good for real estate syndicates or group investments.
LLP: General Partners and Limited Partners
General Partners (GP): Manage the business, make decisions, have some liability exposure.
Limited Partners (LP): Passive investors, no management role, full liability protection. Cannot make decisions without violating LP status.
PLLC: Professional Management Requirements
All managers must be licensed professionals (e.g., all partners in a law PLLC must be lawyers). Some states permit non-professional staff but require licensed professional ownership and control.
Flexibility Winner: LLC
5. Tax Treatment & Pass-Through Options
Federal and state tax implications for each structure
For federal tax purposes, LLC and LLP default to pass-through taxation (disregarded entity for single-member LLC, partnership for multi-member). Both can elect to be taxed as C-Corp or S-Corp for self-employment tax savings.
S-Corp Election for Multi-Member LLCs
6. Operational Complexity & Multi-State Considerations
Compliance burden and multi-jurisdiction challenges
Operating across state lines adds complexity and cost. If you form an LLC or LLP in one state but operate in another, you typically need to register as a foreign entity in that state, incurring additional fees and compliance obligations.
Multi-State Registration: Cost & Complexity
- Each Additional State: $200-$500 initial registration + $50-$300/year annual compliance
- Registered Agent Required: $50-$150/year per state (or appoint yourself)
- State Tax Filings: May need separate state income tax returns, franchise tax returns, or partnership returns
- Professional Licensing: Lawyers, doctors, and accountants may need state-specific licensing in each jurisdiction
- Total Cost for 3-State Operation: $1,000-$3,000 initial + $300-$1,500/year ongoing
Multi-State Professional Practices
Full Comparison: LLC vs LLP vs PLLC vs General Partnership
Frequently Asked Questions
Can a lawyer or accountant choose LLC status over PLLC?
In most states, licensed professionals (lawyers, CPAs, doctors) are required to use a PLLC (Professional Limited Liability Company) or LLP (Limited Liability Partnership) if they want liability protection. Some states allow a single licensed professional to operate as an LLC, but partnerships must use PLLC or LLP. Check your state's rules on professional restrictions.
What is the difference between manager-managed and member-managed LLCs?
In a member-managed LLC, all owners participate in day-to-day management. In a manager-managed LLC, designated managers (who may be non-members) handle operations. This doesn't affect liability protection but does affect operational control. Most single-owner LLCs are member-managed.
Can an LLC or LLP elect S-Corp tax treatment?
Yes. Both LLCs and LLPs can file Form 2553 to elect S-Corp tax treatment for federal purposes. This separates entity structure (LLC/LLP = liability protection) from tax treatment (S-Corp = self-employment tax savings). Many multi-member LLCs and LLPs benefit from S-Corp elections at $100K+ income.
What happens to an LLP if a partner leaves?
In a traditional partnership, departure of a partner can dissolve the firm. In an LLP, the partnership typically continues. However, the departing partner's ownership interest may be subject to buy-sell agreements and valuation disputes. Always have a written operating agreement in place.
Is a PLLC required to have professional liability insurance?
While PLLC status provides some liability protection, most professional licensing boards require errors and omissions (E&O) or malpractice insurance. A PLLC doesn't eliminate the need for insurance; it just adds a legal layer of protection. Typical E&O insurance costs $1,000-$5,000+/year depending on profession.
Can an LLP in one state operate in another state?
Yes, but you'll likely need to register as a foreign LLP in each state where you do business. This requires a separate filing, registered agent appointment, and annual compliance in each state. Multi-state LLPs can become administratively complex and expensive ($300-$1,000/year per state).
What happens if I fail to maintain the legal formalities of an LLC?
If you ignore corporate formalities (no operating agreement, commingled personal and business funds, no separate bank account), a court may "pierce the veil" and hold you personally liable for business debts. This is called disregarding the entity. Maintain proper records, hold meetings, and keep finances separate.
Is a PLLC more expensive than a regular LLC?
Formation costs are similar: $50-$300 in state filing fees. However, PLLCs typically require more insurance, additional licensing fees, and professional compliance obligations. Ongoing costs for a PLLC are usually $200-$500/year more than a standard LLC.
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