Series LLC owners only

Designate a new protected series under your master Series LLC designate a new series

If your master Series LLC is registered in a Series-friendly state, you can designate new protected series at any time. Each series operates as a separate cell with its own members, assets, and liability shield.

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MASTER SERIES LLC
Pacific Properties, LLC
Delaware Series LLC
SERIES A
Bay Property
2 members
SERIES B
Hill House
3 members
SERIES C
Beach Holdings
NEW
ACME HOLDINGS SERIES LLC · DELAWARE Series A Real Estate · 4 properties $ Series B Operations · core business $ Series C IP Holdings · trademarks $ PROTECTED · INDEPENDENT · TAX-SEPARATE

What this filing does

Some states (DE, IL, NV, TX, WY) allow a master Series LLC to designate independent "protected series" beneath it, each with its own assets, members, and liability shield.

How it works

1
Tell us the entity
State + entity name. We pull the public record.
2
Confirm the details
Review what changed. We surface the state-specific gotchas.
3
Pick service level
One-time, or with Compliance Subscription.
4
We file with the state
Stamped filed copy delivered to your vault.
Pricing

Two ways to file

One-time filing when you need this once. Compliance Subscription when you want File.Business to keep watching.

One-Time
$149
Single protected-series designation filing.
  • One-Time Filing
  • 51-state coverage
  • Specialist review
  • Stamped state copy
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$299
Compliance monitoring across the master + all series.
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State filing fee billed separately and varies by jurisdiction.

FAQ

Questions, answered

Which states allow protected series?+

A number of states, including Delaware, Illinois, Texas, Nevada, and Wyoming among others, allow protected series within a series LLC, where each series can hold assets and shield liability separately. The master LLC must be formed in a series-friendly state, and we flag which states support the structure so yours is formed where it works.

What is a protected series?+

A protected series is an internal division of a series LLC that can own assets, have its own members, and be shielded so that a liability of one series generally does not reach the assets of another, all under one master LLC. We flag how the separation is designed to work so you understand what a series does and does not protect.

How is a series designated?+

Depending on the state, a series is created and designated through the master LLC's operating agreement and, where required, a filing or naming with the state, so the designation follows both internal documents and state rules. We handle the designation so each series is properly established rather than existing only informally on paper.

Why use a series instead of separate LLCs?+

A series LLC can hold multiple assets or lines in separate series under one entity, potentially reducing formation and filing overhead versus many standalone LLCs, though the protection is newer and less tested. We flag the trade-offs so you weigh the efficiency of series against the certainty of separate LLCs.

Does each series need its own records?+

Yes, and this is critical: to preserve the liability separation, each series should keep distinct records, assets, and accounts, since commingling can undermine the very shield the structure provides. We flag the discipline required so your series designation actually holds up rather than being disregarded for sloppy separation.

Do series LLCs work in every state?+

No: only certain states recognize series LLCs, and how other states treat an out-of-state series is not fully settled, so operating a series across state lines carries some uncertainty. We flag the state considerations so you use a series where it is recognized and understand the risk where recognition is unclear.

Is a series good for holding real estate?+

It is a common use: investors sometimes hold each property in its own series to separate liability under one master LLC, though many still prefer separate property LLCs for the more established protection. We flag both approaches so your real estate is held in the structure you are comfortable relying on.

How does a series get an EIN and bank account?+

Depending on the situation, individual series may need their own EIN and bank account to maintain separation, and practices vary, so this is part of setting a series up correctly. We flag how to handle EINs and accounts so each series is genuinely distinct rather than separate in name only.

Can File.Business set up a series LLC and its series?+

Yes: we form the master series LLC in a series-friendly state, help designate protected series through the operating agreement and any required filings, and flag the records, EIN, and account separation each series needs, so your series structure is established properly from the start.

Related filings

Series LLC Formation Articles of Amendment

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