LLC Structures: Every Type Explained
“LLC structure” can mean several different things. Some choices describe ownership, some describe who manages the company, some are specialized state-law forms, and others are privacy or multi-entity arrangements. This guide separates those layers so you can choose the simplest structure that actually solves your problem.
How many LLC structures are there?
There is no single official nationwide list of “LLC types.” The most useful framework is to separate ownership (single-member vs multi-member), management (member-managed vs manager-managed), special state-law forms such as Series LLCs or professional LLCs where authorized, and planning arrangements such as privacy-focused filings or holding-company/subsidiary structures. Federal tax classification—disregarded entity, partnership, C-Corp or S-Corp election—is a separate decision.
The Right Framework: Four Different LLC Structure Layers
The old shortcut of listing “eight LLC types” mixes different legal concepts. A single-member LLC and multi-member LLC describe ownership count. Member-managed and manager-managed describe governance. A Series LLC or professional LLC may be a specialized statutory form under state law. An “anonymous LLC” usually describes a privacy result, not a separate entity class. A holding-company LLC is an ownership arrangement in which one entity owns another.
Keep tax classification separate. The IRS says a domestic single-member LLC is generally disregarded for federal income tax unless it elects corporate treatment, while a domestic LLC with two or more members generally defaults to partnership taxation unless it elects corporate treatment.
Ownership: Single-Member vs Multi-Member LLC
A single-member LLC has one owner. A multi-member LLC has two or more owners. This is the cleanest nationwide distinction because it describes who owns the entity rather than inventing a separate legal species of LLC.
For federal income-tax purposes, a domestic single-member LLC generally defaults to disregarded-entity treatment, while a domestic LLC with at least two members generally defaults to partnership classification unless a corporate election is made. Those tax defaults do not change the LLC's state-law identity.
Management: Member-Managed vs Manager-Managed
Management is a different axis from ownership. In a member-managed LLC, members participate in management under the applicable statute and operating agreement. In a manager-managed LLC, management authority is delegated to one or more managers, who may or may not be members depending on state law and the company's documents.
A multi-member LLC can be either member-managed or manager-managed. Likewise, a single-member LLC can appoint a manager. Ownership count does not automatically determine management structure.
Series LLC: A Specialized State-Law Regime
A Series LLC is authorized only in jurisdictions with a series statute. Depending on the statute, a protected series or similar internal unit may hold separate assets and liabilities, but the terminology, filing requirements, recordkeeping rules and liability effect vary significantly.
Do not describe every series as a “child LLC.” Some statutes treat a protected series as a distinct internal statutory construct rather than a separately formed LLC. Liability segregation generally depends on complying with the governing statute and maintaining required separateness.
PLLC / Professional LLC: Profession and State Control the Answer
A professional LLC or PLLC is a state-law professional entity available or required for specified licensed services in some jurisdictions. The rules can govern ownership, management, naming, licensing approval and which professions may use the form.
New York, for example, expressly provides a professional service limited liability company regime for professionals authorized to render the relevant licensed service. That illustrates why “every professional needs a PLLC” is not a safe nationwide rule.
Professional-entity status does not erase personal malpractice exposure. A licensed professional should verify both the formation statute and the applicable licensing-board rules before choosing an entity.
“Anonymous LLC”: Usually a Privacy Configuration, Not a New Entity Type
The phrase anonymous LLC is commonly used to describe an LLC whose public state filing does not display certain owner information. It is generally not a separate statutory LLC class. Privacy depends on the formation state's disclosure rules, what information must be provided to government agencies, registered-agent and organizer arrangements, later filings, banking/KYC requirements, litigation records and other disclosures.
Public-record privacy is not the same as legal secrecy. A state filing may omit member names while banks, tax authorities, courts, licensing agencies or other legally entitled parties can still require ownership information.
Holding Company LLC: An Ownership Arrangement
A holding-company LLC structure usually means one LLC owns interests in one or more operating LLCs or other subsidiaries. The parent and subsidiaries are separate entities if separately formed and maintained; “holding company LLC” itself is not normally a special statutory LLC type.
This arrangement can help separate business lines, assets or investment holdings, but it increases bookkeeping, banking, tax, filing and governance complexity. Each entity must be maintained as an actual separate entity rather than treated as a set of labels on one bank account.
Taxed as S-Corp or C-Corp: Tax Status, Not a New LLC Structure
An LLC may be taxed differently from its default federal classification. An eligible LLC may elect corporate classification, and an eligible entity may elect S-Corporation status. These are tax classifications, not conversions into a different state-law LLC structure. See our LLC Taxed as S-Corp and LLC Taxed as C-Corp guides.
LLC Structures Comparison
| Label | What it actually describes | State-law status | Best first question |
|---|---|---|---|
| Single-member LLC | One owner | Standard LLC ownership configuration | Do I have exactly one member? |
| Multi-member LLC | Two or more owners | Standard LLC ownership configuration | How will ownership and voting work? |
| Member-managed | Members hold management authority | Governance model | Will owners run the business? |
| Manager-managed | Management delegated to manager(s) | Governance model | Should management be centralized? |
| Series LLC | Statutory series regime | Special form where authorized | Does my jurisdiction authorize it and what separateness rules apply? |
| PLLC / professional LLC | Licensed-profession entity regime | Special form where authorized/required | What does my licensing board allow? |
| “Anonymous LLC” | Public-record privacy outcome | Usually not a separate entity class | What ownership information is public? |
| Holding-company LLC | Parent/subsidiary ownership arrangement | Multiple separately formed entities | Does the added complexity solve a real risk/asset-separation need? |
LLC Structure Finder
Choose the issue driving your decision. This tool gives you the right structure layer to investigate first—it does not substitute for state-law review.
Choose an issue above
We’ll identify which LLC structure layer to review first.
Read the related guide →Which Structure Should You Choose?
Start with the simplest legally permitted structure that matches your ownership and management needs. Add a specialized professional, series, privacy or holding-company arrangement only when a specific state-law, licensing, asset-separation or operational problem justifies the added complexity.
For most ordinary businesses, the sequence is: determine ownership count, choose management, confirm any profession-specific restrictions, then evaluate whether a specialized statutory form or multi-entity arrangement solves a real problem. Tax classification comes after that legal-structure analysis.
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Primary Sources & Verification
This guide separates LLC ownership, management, specialized statutory forms, privacy configurations, multi-entity arrangements and federal tax classification so readers do not mistake different legal concepts for interchangeable “LLC types.” State LLC and professional-entity rules should be rechecked before filing.