Series LLCs
§ 12.1Overview and Statutory Framework
Texas adopted its series limited liability company (LLC) legislation in 2009, introducing a statutory framework that allows a single limited liability company to establish multiple partitioned “series” within one umbrella entity. Tex. Bus. Orgs. Code subch. M. In practice, a series LLC can function similarly to a parent holding company with multiple subsidiaries, but without forming several separate entities. The governing provisions are found in subchapter M of the Texas Business Organizations Code (TBOC), which authorizes the formation of distinct series, prescribes the formalities required to establish and maintain them, and defines the limits of liability between the umbrella company and each individual series.
A Texas series LLC is composed of (1) the parent or “umbrella” entity, which is the domestic LLC formed with the secretary of state, and (2) one or more internal series that may each own assets, incur debts and obligations, enter into contracts, and conduct operations independently of one another. Importantly, Texas law now recognizes three statutory categories of series, each with varying degrees of separateness and liability protection.
Registered Series: A registered series is the most externally verifiable form of series because it appears in the public record. A series becomes “registered” only after the umbrella LLC files a certificate of registered series with the secretary of state. Tex. Bus. Orgs. Code § 101.623.
Registered series are frequently used in transactions where third-party lenders, title companies, or counterparties need a public, state-issued reference point confirming the existence of the series. Because the filing creates a separate secretary of state record, transactional counsel should expect the same level of name precision required in traditional entity dealings.
Protected Series: A protected series functions entirely inside the walls of the umbrella LLC but receives the same statutory liability shield afforded to registered series, provided the series LLC satisfies the statutory requirements.
No certificate of registered series is filed for a protected series. Instead, protected series are created through the company agreement and maintained through disciplined recordkeeping. The key distinction is not secrecy or informality but rather that the protections arise from proper internal governance, not from separate secretary of state registration. Tex. Bus. Orgs. Code § 101.602.
Ordinary Series: If the umbrella LLC does not contain the statutory notice in its certificate of formation, or if the company agreement does not authorize protected or registered series, any internal “series” created by the members defaults into the “ordinary series” category. An ordinary series cannot rely on the statutory liability partitions found in Tex. Bus. Orgs. Code § 101.633.
An ordinary series operates more like an internal accounting label than a legally insulated cell. When an ordinary series appears in an existing structure, practitioners should treat this as an indication that remedial action may be required either through amendment, reclassification, or conversion into a protected or registered series.
§ 12.2Formation of the Umbrella Series LLC
A series LLC is formed using the standard certificate of formation (SOS Form 205, www.sos.state.tx.us/corp/forms/205_boc.pdf) used for traditional LLCs. The key distinction from a traditional LLC is the required statutory notice, which requires the certificate to include language informing the public that (1) the liabilities of a particular series are enforceable only against the assets of that series, and (2) the liabilities of the LLC generally or of other series are not enforceable against that series. Tex. Bus. Orgs. Code § 101.602(b)(3).
The statute provides model language for this notice, and most practitioners insert it verbatim to avoid any question of sufficiency.
Once the umbrella LLC is properly formed, no additional filing with the secretary of state filing is needed to establish a protected series. A protected series is created internally through the company agreement and maintenance of “separate and reasonably identified” records for that series. A registered series, by contrast, cannot be created internally; it must be created upon filing a certificate of registered series. Tex. Bus. Orgs. Code § 101.623.
§ 12.3Registered Series Requirements
A certificate of registered series must identify the umbrella LLC and state the name of the registered series. Tex. Bus. Orgs. Code §§ 5.0561, 101.626. Because registered series appear in the secretary of state index, the naming rules are precise, and the name must be fully distinguishable from all other filings.
Practitioners should emphasize disciplined naming practices in transactional documents. Inaccurate abbreviations, inconsistent spacing, and misordered elements of a registered series name can complicate title examination or financing procedures. Once established, the registered series becomes the name that must appear consistently on conveyances, liens, affidavits, and all instruments affecting title or credit.
§ 12.4Assumed Names and Public-Facing Identity
Both the umbrella LLC and its protected or registered series may transact business under assumed names, subject to the filing requirements of chapter 5 of the TBOC and chapter 71 of the Texas Business and Commerce Code. A registered series may file its own assumed-name certificate, but the certificate must identify both the series and the umbrella LLC.
§ 12.5Powers and Operations of a Series
Under Tex. Bus. Orgs. Code § 101.605, each protected or registered series may exercise many of the same powers available to a traditional LLC, including (1) holding title to real, personal, or intangible property; (2) entering into contracts in its own name; (3) granting liens and security interests; (4) suing and being sued; and (5) owning or managing interests in other organizations.
Importantly, while a series is not a separate “domestic entity” under Texas law, it is considered a “person” for certain statutory purposes. Tex. Bus. & Com. Code § 1.201(b)(27). Federal tax regulations likewise permit a series to obtain its own EIN and elect separate tax classification when appropriate. For state tax purposes, however, Texas treats the entire series LLC (the umbrella and the series collectively) as a single franchise-tax filer, regardless of the number of internal series.
§ 12.6Conversions, Mergers, and Reorganizations
As of September 1, 2023, Texas law expressly authorizes conversions between protected and registered series and allows mergers between series. The statutory procedures are found in Tex. Bus. Orgs. Code §§ 101.627–.633. These provisions allow for practitioners who need to reorganize internal structures, particularly in real estate, private investment, and asset-segregation contexts where restructuring a series arrangement is often necessary.
§ 12.7Litigation Considerations and Piercing Theories
Series LLC disputes commonly center on whether internal divisions were respected in practice. Courts evaluating series separateness often look beyond the company agreement and examine the conduct of the business naming practices, financial segregation, recordkeeping, and whether the operations of one series overlapped with another.
From a defensive perspective, the most important tools are clarity and consistency. Each series should maintain its own accounting trail, use its full legal name in every contract or transfer, and ensure that funds, obligations, and assets do not drift between series or between a series and the umbrella LLC. Proper internal discipline is the best safeguard against alter-ego or veil-piercing theories framed around misuse of the series structure.
§ 12.8Governance, Classes, and Management
Unless the company agreement provides otherwise, a series is governed in the same manner as the umbrella LLC, either member-managed or manager-managed, under Tex. Bus. Orgs. Code § 101.608(b).
The company agreement, however, may customize governance extensively by (1) creating distinct classes of members or managers associated with each series, (2) establishing customized voting procedures or series-specific decision-making authority, and (3) allocating priority or preferred economic rights among series or classes.
These tools are particularly useful where different series hold different types of assets or involve different investor groups, allowing each series to function with governance terms tailored to its economic purpose.
§ 12.9Comparison to Traditional LLCs and LPs
LLCs increasingly displaced limited partnerships (LPs) for small-scale real estate investment after legislative amendments expanded the reach of the Texas franchise tax. While the LP model remains beneficial for larger projects with multiple investor classes and defined sponsor economics, the series LLC has become the preferred operational base for investors who need multiple liability compartments without the expense or upkeep associated with numerous standalone entities.
Rather than functioning as a replacement for LP development structures, the series LLC serves as a cost-efficient vehicle for investors who manage a portfolio of individually held assets and prefer to allocate liabilities in a granular, asset-by-asset format.
§ 12.10Practical Guidance for Asset Placement
The statutory framework allows unlimited series, but thoughtful asset allocation is essential. A series functions most predictably when its assets share similar risk characteristics, financing profiles, and operational dynamics. Blending incompatible assets, such as a short-term rental with a long-term passive hold, or a property with personal guarantees alongside one with nonrecourse financing, creates administrative friction and complicates liability analysis.
A practical approach is to treat each series as a focused asset silo rather than a repository for unrelated holdings. The number of properties placed in each series should reflect their similarity, not an arbitrary numerical target. When a portfolio becomes diverse enough that series begin absorbing fundamentally different risk profiles, practitioners should consider creating an additional umbrella LLC.
§ 12.11Two-Entity Operational Framework
Many practitioners employ a “two-company model,” in which a holding company (series LLC) holds title to assets, with each asset placed in its own protected or registered series, and a management company (traditional LLC) conducts leasing, operations, maintenance, vendor contracting, and public-facing activities.
Maintaining these entities as distinct, arm’s-length counterparties reduces the risk of veil-piercing or series-collapsing arguments and greatly simplifies bookkeeping. Importantly, neither entity should own an interest in the other, and each should maintain its own bank accounts, insurance policies, and contractual relationships.
§ 12.12Winding Up and Termination
Each protected or registered series may be wound up independently without dissolving the umbrella LLC. Tex. Bus. Orgs. Code §§ 101.614–.615. A registered series must file a certificate of termination with the secretary of state, which carries a $40 filing fee. Terminating a protected series, by contrast, requires no public filing and is accomplished internally through the procedures set out in the company agreement and subchapter M of the TBOC.
§ 12.13Series LLCs for Real Estate Investors
Texas real estate investors frequently use series LLCs to separate risk among individual properties, and recent appellate decisions have strengthened the reliability of this structure. Under the TBOC, a series LLC may establish one or more internal “series” at any time, so long as the certificate of formation and company agreement authorize the creation of separate cells.
In In re Estate of Bramblett, 722 S.W.3d 123 (Tex. App.—Houston [1st Dist.] 2025, no pet. h.), the Amarillo court of appeals confirmed that series can be formed after the umbrella LLC is created and that assets, including real property, may be validly segregated by being transferred into newly designated series, such as series A, series B, and so on. The court upheld that the deeds transferring seven rental properties into Series A–G were effective, concluding that each property was separately owned by its designated series, and that the entity had sufficiently identified, maintained, and treated each series as a distinct cell with its own liability shield.
Bramblett provides real estate investors with direct judicial confirmation that Texas series LLCs function as intended: each property can be placed into its own “bucket,” insulating its liabilities from the umbrella LLC and from other series. As a result, series LLCs remain an attractive and efficient structure for real estate investors seeking asset-by-asset segregation without forming multiple standalone entities.
§ 12.14Banking and Title Company Issues
Despite more than a decade of statutory authorization, series LLCs remain imperfectly understood by banks, lenders, and title companies. Practitioners should anticipate certain challenges when a protected or registered series acquires, finances, or conveys real estate.
Banks vary in their willingness to open accounts for individual series. Many require documentation confirming proper series formation, including the certificate of formation with the subchapter M notice, the company agreement authorizing series, and resolutions identifying the specific series. Lenders sometimes require the umbrella LLC to serve as borrower, with the series pledging its property as collateral. Clear documentation is essential to avoid blurring the separateness of the borrower and the asset-owning series.
Title companies often request additional proof of authority and ownership when insuring title in the name of a series. Common requests include evidence that the property was assigned to the correct series, the series designation in the company agreement, and affirmations that the series was properly established. Registered series must be named exactly as filed, and protected series should be described with equivalent specificity in deeds and affidavits.
When recording documents like deeds and deeds of trusts, it is important to take precautions to preserve a clear chain of title for a property. As county clerks may index series names inconsistently, practitioners should use the full statutory or designated series name, include recital language confirming the series structure, and coordinate early with the title company to ensure consistent treatment.
§ 12.15Advantages and Disadvantages of Series LLCs
Series LLCs offer meaningful advantages for Texas real estate investors and small businesses, but they also carry limitation and administrative risks. Practitioners should help clients weigh these considerations when selecting an entity structure.
Advantages:
Efficient asset segregation: Series LLCs allow investors to isolate liabilities at the property-by-property level without forming multiple separate LLCs. Each series may hold assets and incur obligations that are insulated from the umbrella LLC and other series, provided statutory formalities are observed.
Reduced formation and maintenance costs: Only the umbrella LLC requires initial formation, and protected series require no filings with the secretary of state. This can significantly reduce filing fees and ongoing maintenance obligations.
Operational flexibility: Series may be created, modified, and terminated internally. This flexibility is particularly useful for dynamic real estate portfolios where properties are frequently acquired, sold, or refinanced.
Judicial validation: Cases such as In re Estate of Bramblett, 722 S.W.3d 123 (Tex. App.—Houston [1st Dist.] 2025, no pet. h.) confirm that properly established series will be treated as distinct cells with enforceable liability partitions, providing investors with confidence that the structure will operate as intended.
Disadvantages:
Administrative complexity: Although less burdensome than multiple LLCs, series LLCs still require careful recordkeeping. Failure to maintain separate and “reasonably identified” records for each series risks collapsing the liability shield.
Uneven third-party acceptance: Banks, lenders, and title companies remain inconsistent in their treatment of series. Additional paperwork, affidavits, or opinions may be required to complete routine transactions.
Potential for increased litigation scrutiny: Because the structure is still relatively novel, plaintiffs often challenge the validity of series separateness. Poor bookkeeping, commingling, or inconsistent use of series names can provide grounds for veil-piercing claims.
Inter-series transactions create risk: Loans, transfers, or allocations between series can blur separateness if not properly documented. Formal resolutions and clear accounting entries are essential.
§ 12.16Situations Where Series LLCs Are Not Ideal
There are certain situations in which a series LLC would not be ideal, including—
1.large real estate syndications or multi-investor developments (LPs remain preferable in these instances);
2.highly leveraged properties with lender resistance to series structures;
3.clients who are unlikely to maintain rigorous internal records; and
4.business operations that involve unrelated assets, employees, or regulatory regimes.
§ 12.17Guidance for Series LLC Formation
The following steps are recommended when forming a series LLC:
1.Confirm that the certificate of formation includes the statutory notice required by Tex. Bus. Orgs. Code § 101.602(b)(3).
2.Define “protected,” “registered,” and “ordinary” series in the company agreement and classify all nonregistered series as protected.
3.Maintain series-level records that “reasonably identify” each series’ assets and obligations.
4.Observe naming rules when forming registered series.
5.File assumed-name certificates as needed under Tex. Bus. & Com. Code ch. 71.
6.Keep holding and management functions in separate entities.
7.Review reorganizations under Tex. Bus. Orgs. Code §§ 101.627–.633 before converting or merging series.
8.Remind clients that a series is not a separate domestic entity, but it does carry distinct legal powers under Tex. Bus. Orgs. Code § 101.605.
§ 12.18What Texas Case Law Provides Practitioners
In In re Estate of Bramblett, 722 S.W.3d 123 (Tex. App.—Houston [1st Dist.] 2025, no pet. h.), the First Court of Appeals held that a series LLC may validly establish individual series at any time if the company agreement authorizes it, and that the original parent LLC properly created Series A–G under its operating agreement. The court confirmed that the special warranty deeds transferring seven rental properties into Series A–G effectively placed each property into its own separate series, even though the original exhibits listing series assets were blank and no series members were designated. The court emphasized that Texas law allows a series to be formed with assets alone and that each property was properly identified, transferred to, and treated as a separate series. It further held that the series were legally distinct from each other and from the parent LLC for purposes of ownership and liability segregation.
Important takeaways from Bramblett include the following:
1.Series can be created at any time, not just at formation, if the LLC’s governing documents allow it.
2.Assets alone are sufficient to establish a valid series. No member or manager designation is required.
3.Property deeds identifying the grantee as a series are sufficient to place the property into that series.
4.Each series is treated as a separate internal cell, with distinct ownership and liability segregation.
5.Texas courts now provide affirmative judicial recognition of validly formed series under chapter 101 of the TBOC.
In Rieder v. Woods, 603 S.W.3d 86 (Tex. 2020), the Texas Supreme Court held that an LLC’s operating agreement and a separate series agreement are not components of a single, unified instrument, even when executed on the same day and relating to the same broader business relationship. The court emphasized that the Cadbury operating agreement bound only the LLC’s members, while the series agreement bound only the two LLC entities that signed it, and that each agreement had different parties, different purposes, different obligations, different governing law, and separate merger clauses confirming their independence. Because neither agreement referenced or incorporated the other, the court concluded that they must be construed separately, expressly holding that the parent agreement and the series agreement “are not components of a single, unified instrument.” Rieder, 603 S.W.3d at 95. This ruling reinforces Texas’s recognition of the legal separateness of the parent LLC and its series cells, confirming that a series operates under its own governing contractual framework and is not automatically integrated with or controlled by the parent LLC’s operating agreement unless the documents expressly state otherwise.
Key takeaways from Rieder include the following:
1.Texas courts will not merge a series agreement into the LLC’s operating agreement unless the documents expressly incorporate each other.
2.Because the operating agreement involved only the parent company’s members, and the series agreement involved two separate parent companies as separate entities, the court treated the documents as inherently separate.
3.By refusing to treat a series agreement as part of the parent LLC’s governing documents, the court implicitly affirmed that a series LLC’s internal series are legally distinct—even at the contractual level.
For additional content relevant to the topic of this chapter, see the following:
Application for Registration of a Foreign Series Limited Liability Company (SOS Form 313), www.sos.state.tx.us/corp/forms/313_boc.pdf
Assumed Name Certificate (SOS Form 503), www.sos.state.tx.us/corp/forms/503_boc.pdf
Certificate of Formation—Limited Liability Company (SOS Form 205), www.sos.state.tx.us/corp/forms/205_boc.pdf