Wyoming Advantage · 2026-04-13
Wyoming Series LLC: Run Multiple Businesses Under One Entity
A Wyoming Series LLC lets you create multiple protected "series" under one parent LLC, each with its own assets, liabilities, and members. Instead of forming three separate LLCs at $300+ in formation fees and $180/year in annual reports, you form one Series LLC for $100 and pay $60/year total.
The Problem Series LLCs Solve
Many business owners operate more than one business or hold multiple types of assets. An Amazon seller runs three stores. A real estate investor owns four rental properties. A consultant offers services through one brand and sells products through another.
The traditional approach is to form a separate LLC for each business or asset class. This provides liability isolation. If one business gets sued, the others are protected. But it also means multiple formation fees, multiple annual reports, multiple registered agent fees, and multiple bank accounts. The administrative burden and cost scale linearly with each new entity.
A Series LLC solves this by allowing you to create multiple "series" (sometimes called "cells") within a single parent LLC. Each series operates as its own protected compartment with its own assets and liabilities, but they all exist under one legal entity filing.
How a Wyoming Series LLC Works
A Series LLC has two layers:
The Parent LLC is the entity filed with the Wyoming Secretary of State. It is the legal entity that appears in state records. You file Articles of Organization for the parent LLC just like any regular LLC, with the addition of language authorizing the creation of series.
Individual Series are created within the parent LLC through the Operating Agreement. Each series can have:
Its own assets (bank accounts, property, inventory, intellectual property)
Its own liabilities (debts, contracts, obligations)
Its own members and managers (different from other series or the parent)
Its own purpose and business activity
The critical feature is liability isolation between series. If Series A incurs a debt or gets sued, the creditor can only reach the assets of Series A. The assets of Series B, Series C, and the parent LLC are shielded, assuming proper separation is maintained.
This internal liability shield operates similarly to having separate LLCs, but without the need to file separate entities with the state.
Formation and Cost Comparison
Single Series LLC
**Wyoming formation fee:** $100 (online filing with Secretary of State)
**Annual report:** $60/year
**Registered agent:** ~$100/year (one agent covers the parent and all series)
**Total first year:** approximately $260
**Total ongoing:** approximately $160/year
Three Separate LLCs (Traditional Approach)
**Wyoming formation fees:** $100 x 3 = $300
**Annual reports:** $60 x 3 = $180/year
**Registered agents:** ~$100 x 3 = $300/year (some agents offer multi-entity discounts)
**Total first year:** approximately $780
**Total ongoing:** approximately $480/year
Over five years, the Series LLC saves approximately $1,920 compared to three separate LLCs. For founders running five or more business lines, the savings are proportionally larger.
The savings extend beyond filing fees. One Series LLC means one Operating Agreement (with series provisions), one EIN for the parent (individual series may need separate EINs depending on their activities), and simplified overall administration.
Ideal Use Cases
Multiple E-Commerce Stores
An Amazon seller operating three stores in different niches can place each store in its own series. If one store faces a product liability claim, the inventory and revenue of the other stores are in separate series and not reachable by the claimant.
This is particularly relevant for sellers concerned about account association. Each series is not a separate legal entity for state filing purposes, but the operating agreement documents them as distinct operations. For understanding Amazon's multi-account detection, see What Is Amazon Account Association and Multi-Account Detection.
Multiple Rental Properties
Real estate investors commonly use Series LLCs to hold individual properties in separate series. A tenant who slips and falls at Property A can only sue Series A. Properties B, C, and D are in separate series with separate assets.
This avoids the cost and complexity of forming a separate LLC for each property, which becomes prohibitive for investors with ten or more properties.
Multiple Product Lines or Brands
A business that sells both physical products and digital services can separate these into different series. A product recall or liability claim on the physical product side does not threaten the assets of the digital services operation.
Holding Company Structure
A parent series can serve as a holding company while individual series hold operating businesses, intellectual property, or real estate. This creates a clean organizational structure without multiplying entity filings.
The Operating Agreement Is Everything
Unlike regular LLCs where the Operating Agreement is important but the state filing creates the entity, Series LLCs depend almost entirely on the Operating Agreement for their internal structure.
The Operating Agreement for a Series LLC must specify:
**Series creation provisions** — how new series are established and documented
**Asset separation** — which assets belong to which series
**Liability limitation** — explicit language that each series' liabilities are limited to that series' assets
**Management structure** — who manages each series (can be different people)
**Membership interests** — who owns what percentage of each series
**Distribution rules** — how profits are allocated within and between series
**Record-keeping requirements** — each series must maintain separate records
A poorly drafted Operating Agreement can undermine the liability protection between series. If assets are not clearly allocated to specific series, a court may treat the entire Series LLC as a single entity, eliminating the internal shields.
This is the most important investment in a Series LLC: a properly drafted Operating Agreement. Using a generic template is risky. The operating agreement should be specific to your actual business structure and asset allocation.
Banking Challenges
This is where Series LLCs encounter practical friction. Banking for Series LLCs is not as straightforward as banking for regular LLCs.
Some banks will not open accounts for individual series. They only recognize the parent LLC as the legal entity and may require all banking to be done through the parent. This undermines the asset separation that makes Series LLCs valuable.
Banks that do accommodate series may require separate account opening applications for each series, separate EINs for each series, and may treat each series as a new customer relationship requiring full KYB verification.
Neobanks (Mercury, Relay, Bluevine) have varying policies. Some have streamlined multi-account processes that work well for Series LLCs. Others may flag multiple account requests from the same person as suspicious.
Credit unions and community banks are often more flexible with Series LLC banking because they can evaluate the structure on a case-by-case basis rather than running it through automated systems.
The practical recommendation: before forming a Series LLC, confirm that your intended bank can accommodate separate accounts for individual series. If your bank can only open one account for the parent entity, you lose the financial separation that makes the structure effective.
Tax Treatment
The IRS does not have specific guidance for Series LLCs. In practice, each series is generally treated as follows:
Single-member series (one owner per series) are treated as disregarded entities for tax purposes, with income reported on the owner's personal return (Schedule C for sole proprietors).
Multi-member series are treated as partnerships, each requiring its own Form 1065 partnership return.
Series electing corporate taxation can file Form 8832 to elect C-Corp treatment or Form 2553 for S-Corp treatment.
Each series that is treated as a separate entity for tax purposes needs its own EIN. This means a Series LLC with four active series might need four EINs plus one for the parent, resulting in five tax identification numbers.
The tax complexity of a Series LLC can approach or exceed that of separate LLCs, especially when different series have different ownership structures or tax elections. The cost savings are primarily in state filing fees and registered agent costs, not in tax preparation.
Limitations and Risks
State Recognition
Not all states recognize Series LLCs. As of 2026, the following states have Series LLC statutes:
Wyoming, Delaware, Illinois, Iowa, Nevada, Oklahoma, Tennessee, Texas, Utah, and the District of Columbia are among states with explicit Series LLC legislation. The list continues to grow as more states adopt the Uniform Protected Series Act.
The problem arises when a Series LLC formed in Wyoming does business in a state that does not recognize series. If a dispute arises in that state, the court may not respect the liability isolation between series. The LLC would be treated as a single entity.
For businesses operating primarily online and not registered as foreign entities in non-recognizing states, this risk is lower. For businesses with physical operations in multiple states, the risk requires careful evaluation.
Lawsuit Cross-Contamination
If series are not maintained with strict separation (separate books, separate bank accounts, separate contracts), a plaintiff's attorney can argue that the series are not truly separate and ask the court to disregard the internal barriers. This is analogous to piercing the corporate veil, but applied to internal series rather than the parent entity.
Complexity
A Series LLC with five active series requires:
Five sets of financial records
Potentially five EINs
Potentially five bank accounts
Five sets of contracts and agreements
One comprehensive Operating Agreement covering all series
Potentially five separate tax filings
At some point, the administrative burden of properly maintaining five series equals or exceeds the burden of five separate LLCs. The break-even point depends on your state filing costs and how disciplined you are about record-keeping.
Insurance
Most insurance carriers are familiar with traditional LLC structures but may have questions about Series LLCs. Ensure your liability insurance covers each series specifically. A policy covering only the parent LLC may not extend to individual series.
Series LLC vs Holding Company with Subsidiaries
An alternative to the Series LLC is a traditional holding company structure where a parent LLC owns multiple subsidiary LLCs. Each subsidiary is a separately filed entity.
Series LLC advantages over holding company:
Lower state filing costs (one filing vs many)
Simpler registered agent arrangement
Less paperwork for state compliance
Holding company advantages over Series LLC:
Universal state recognition (every state recognizes separate LLCs)
Clearer legal precedent for liability separation
Banks universally understand and accommodate subsidiary LLCs
No ambiguity about tax treatment
For founders who need bulletproof liability separation, universal bank access, and operations in multiple states, the traditional holding company structure may be worth the additional filing costs. For founders operating primarily online with multiple brands or product lines in a single state, the Series LLC offers meaningful cost savings.
How to Form a Wyoming Series LLC
The formation process is nearly identical to a regular Wyoming LLC:
1. Choose a name and verify availability with the Wyoming Secretary of State
2. File Articles of Organization with series authorization language (the Articles must state that the LLC is authorized to establish series)
3. Appoint a registered agent in Wyoming
4. Pay the $100 filing fee
5. Draft a comprehensive Operating Agreement that defines each series, its assets, its members, its management, and the liability barriers between series
6. Obtain EINs for the parent and each series as needed
7. Open separate bank accounts for each series that holds assets or conducts business
Steps 5 and 6 are where most founders either underinvest or make mistakes. The Operating Agreement is the foundation of the entire structure. Without it, you have an expensive regular LLC that thinks it has internal protections but does not.
For understanding the LLC formation basics, see What Is an LLC: Guide for Non-US Founders. For Amazon sellers evaluating multi-store structures, see What Is Amazon Account Association and Multi-Account Detection.