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Washington . Series LLC not available

Washington does not authorize Series LLCs. Here is what to do instead.

Washington has not statutorily authorized the Series LLC structure. Founders looking for the asset-segregation benefits of a Series LLC have three practical alternatives: standalone LLCs per asset, parent-subsidiary structure, or a Series LLC formed in a state that authorizes them (typically Delaware, Texas, Illinois, or Nevada) with foreign qualification into Washington.

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Three alternatives for Washington founders

1. Standalone LLCs per asset

Form a separate Washington LLC for each property or risk pool. Cleanest structure, full asset protection, but higher cost per entity.

2. Parent-subsidiary structure

A holding LLC owns multiple operating subsidiaries. Each subsidiary owns one asset or business line. Common for real estate and multi-brand operations.

3. Series LLC in Delaware + foreign qualification

Form the Series LLC in a state that authorizes them (Delaware, Texas, Illinois, Nevada), then foreign-qualify in Washington. Inter-series protection works in the home state; respect by Washington courts is uncertain.

FAQ

Frequently asked questions

Does Washington allow Series LLCs?
No. {s["name"]} has not statutorily authorized the Series LLC structure.
Can I form a Series LLC in another state and operate in Washington?
Yes, via foreign qualification. Inter-series protection may not be fully respected by Washington courts.
Which states authorize Series LLCs?
Delaware, Texas, Illinois, Nevada, Tennessee, Alabama, Iowa, Wyoming, Montana, and several others.
What is the best alternative for Washington real estate investors?
Standalone LLC per property is the most-respected approach. Holdings LLC with operating subsidiaries is a close second.
How expensive is the standalone-LLC approach in Washington?
$200 formation + $60 annual report per entity. Multiply across your portfolio.
Will a Delaware Series LLC protect each series if I am sued in Washington?
Uncertain. Courts may apply {s["name"]} law and disregard inter-series protection.
Does File.Business advise on alternatives?
Yes. We help compare standalone LLCs, parent-subsidiary, and foreign-qualified Series LLC paths.

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Form standalone LLCs Form a Series LLC in Delaware

Disclosure. File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with the WA Secretary of State or any Secretary of State office. You may file directly with the WA Secretary of State. Information on this page is for general guidance only and is not legal, tax, or accounting advice. Fees and deadlines verified against the WA Secretary of State as of June 2026 and may change. For entity-specific guidance, consult a licensed Washington attorney or CPA.

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File.Business is a private business filing and compliance service. We are not a government agency and are not affiliated with any Secretary of State office. You may file directly with the appropriate state agency. SOC 2 Type II audited. 220,000+ businesses formed since 2017.