Series LLC: How It Works and Where It's Allowed

A series LLC is one LLC with separate sub-LLCs that each hold their own assets and liabilities. Learn how it works, which states allow it, and its pros and cons.

A series LLC is a single limited liability company that contains multiple separate series, each with its own assets, members, and liabilities. It's designed for people who want to wall off different business lines or properties under one umbrella. This guide explains how a series LLC works and whether it's right for you.

What Is a Series LLC?

A series LLC is one LLC that can create several sub-LLCs, called series. Each series is treated as a separate entity for liability purposes, even though they all share the same parent LLC. That means a lawsuit against one series shouldn't touch the assets of another.

This structure is especially popular with real estate investors who own multiple properties. Instead of forming a separate LLC for each building, they can hold each one in its own series under a single parent.

How Series Work

Each series within a series LLC keeps its own records, bank accounts, and members. The key benefit is separate liability. If one series gets sued, the other series and the parent are generally protected, as long as you keep the series properly separated.

To keep that protection, you need to:

• Keep separate books and records for each series
• Maintain separate bank accounts
• Make clear in contracts which series is involved
• Follow your state's rules for naming and registering each series

If you mix assets between series, a court may ignore the separation and treat them as one. That defeats the whole purpose, so discipline matters.

Which States Allow a Series LLC

Not every state recognizes series LLCs. Delaware, Illinois, Nevada, Texas, and a number of others allow them. Some states allow you to form one but don't fully protect the series from each other, which weakens the benefit.

If your state doesn't recognize series LLCs, you may still be able to form one in a state that does, but you'll need to register as a foreign LLC in your home state. That adds cost and complexity, so check your state's rules first.

Pros and Cons of a Series LLC

There are real trade-offs to weigh before choosing a series LLC.

Pros:

• One filing instead of many, which can save on formation fees
• Separate liability for each series
• One set of annual filings in many states

Cons:

• Not recognized in every state, so protection can be uncertain
• Banks and lenders often treat each series as a separate customer
• More complex record keeping than a standard LLC

Because the law here is still developing, many advisors suggest a series LLC only when you're confident your state fully protects it.

Alternatives to a Series LLC

If a series LLC feels risky or your state doesn't recognize it, you have other options. You can form separate LLCs for each asset, which gives you the clearest liability protection but costs more. Or you can hold everything in one LLC and rely on insurance.

For rental property owners, a series LLC can be attractive, but separate LLCs are the more conservative route. See our guide on LLCs for rental property for more. You'll also want to stay on top of LLC compliance either way.

If your main goal is protecting personal assets, review our guide to LLC asset protection to see how a series LLC fits into a broader strategy.

For the basics of the structure, start with our overview of series LLCs.

Frequently Asked Questions

What is a series LLC?

A series LLC is a single limited liability company that contains multiple separate series, each with its own assets, members, and liabilities. Each series is meant to be protected from the liabilities of the others.

Which states allow a series LLC?

Delaware, Illinois, Nevada, Texas, and several other states allow series LLCs. Some states recognize them but don't fully protect each series from the others, so you should check your state's specific rules before forming one.

How is a series LLC different from a regular LLC?

A regular LLC is one entity with one set of assets and liabilities. A series LLC is one parent LLC that can create multiple sub-LLCs, each with its own assets and liability protection, all under a single filing.

Is a series LLC good for real estate?

Many real estate investors like series LLCs because they can hold each property in its own series under one parent. This can save on formation costs, but not all states fully protect each series, so separate LLCs are sometimes safer.

What are the downsides of a series LLC?

Series LLCs aren't recognized in every state, so liability protection can be uncertain. They also require careful record keeping and separate bank accounts for each series, and banks often treat each series as a separate customer.