Michigan does not allow series LLCs. The Michigan Limited Liability Company Act contains no provisions authorizing the creation of internal series within a single LLC, so a true Michigan series LLC cannot be formed. Investors who want the asset-segregation benefits that series structures offer in other states have two realistic paths in Michigan: form multiple standard LLCs (or a parent-subsidiary holding structure) under Michigan law, or form a series LLC in a state that permits them and register that foreign entity to do business in Michigan. The second path works on paper but carries real legal uncertainty.
Why Michigan Doesn’t Offer a Series LLC
About 20 states have adopted some version of series LLC legislation since Delaware pioneered the concept in 1996. Michigan has not. The legislature overhauled the state’s LLC framework through Public Acts 557 and 558 of 2018, which took effect in 2019, modernizing operating agreement flexibility and management rules, but the amendments did not add series provisions, and no later session has added them either.
The Michigan LLC Act, codified at MCL 450.4101 and following, governs formation, management, member rights, and dissolution of standard LLCs. Provisions like MCL 450.4402 cover manager delegation and authority, and MCL 450.4404 addresses manager duties.1Michigan Legislature. Michigan Compiled Laws 450.4402 Nothing in the Act authorizes series or creates a mechanism for internal liability shields between divisions of one LLC. Some online guides incorrectly cite these sections as support for a Michigan series LLC. They don’t say that.
What a Series LLC Would Have Given You
A series LLC is a single entity containing multiple internal divisions, often called series or cells. Each series can hold its own assets, carry its own debts, and have its own members. The defining feature is the internal liability shield: a creditor of one series can reach only that series’s assets, not the master LLC’s assets or other series’ assets. Real estate investors are the most common users, because the structure lets them hold each property in its own series rather than paying to form a separate LLC for every building.
That is the benefit Michigan law does not deliver. The alternatives below approximate it in different ways, with different trade-offs.
Registering a Foreign Series LLC in Michigan
Some business owners form a series LLC in Delaware, Illinois, Texas, or Nevada and then register that entity as a foreign LLC in Michigan. The approach is legal. Whether it actually protects you the way it would in the home state is a different question, and the honest answer is that nobody knows for certain.
Michigan courts have not definitively addressed whether they will honor the internal liability shields of a foreign series LLC. States without their own series statutes may decline to recognize the wall between one series and another when a dispute lands in their courts. If you are sued in Michigan over a property held by one series, a Michigan court could treat the entire series LLC as a single entity and reach assets held by sibling series. This is the central risk, and it remains unsettled.
The economics are also less attractive than they first appear. You pay formation fees in the home state, pay again to register as a foreign LLC in Michigan, and then owe annual compliance in both. For a landlord with three or four rentals, the doubled administration can erase the savings that made the series idea appealing. You will still need a Michigan registered agent, still file annual statements with the state, and still answer to Michigan courts for anything that happens here.
Banks add a practical wrinkle. Not every bank understands series LLCs. Some will open an account only for the master LLC and refuse separate accounts for the individual series. Others want to see articles of organization, the operating agreement, and an EIN for each series before they’ll proceed. Call ahead. Regional banks and Michigan credit unions tend to be more flexible than the national chains, but experiences vary.
Multiple Separate LLCs: The Standard Michigan Approach
The most direct substitute is to form a separate Michigan LLC for each asset or business line you want to protect. Each LLC is its own legal entity with its own liability shield, and a judgment against one cannot reach the assets of another. Michigan attorneys most often recommend this structure for real estate investors because it rests on well-established Michigan law, not on an untested cross-border question.
The cost is the obvious drawback. Each LLC requires its own Articles of Organization filing with the Department of Licensing and Regulatory Affairs, its own annual statement, and its own records. At $50 per formation and $25 per year in annual fees, the arithmetic bites once you hold a dozen or more properties.2Department of Licensing and Regulatory Affairs. Limited Liability Company Filing Information For small portfolios, those numbers are modest; for larger ones, they are the reason some owners look at the out-of-state series route in the first place.
The Holding Company Alternative
A holding-company structure uses one parent LLC that owns the membership interests of multiple child LLCs. The parent handles centralized management while each child holds a single asset or business line. The practical compartmentalization is similar to what a series LLC provides, and Michigan has well-developed case law supporting liability separation between parent and subsidiary entities, which the series approach lacks here.
The compliance burden is the same as running multiple LLCs: each subsidiary needs its own formation, its own EIN, and its own annual filings. What you gain is a clean organizational chart and a management layer that many investors find useful once a portfolio grows.
Keeping the Liability Shields Intact
Whichever structure you pick, the protection only holds if you treat the entities as genuinely separate. Each LLC (or each series, if you go that route) needs its own bank account, its own bookkeeping, and its own financial records. Commingling funds across entities is the fastest way to lose liability protection in court, because a judge can pierce the veil and treat the whole arrangement as a single operation.
For standard Michigan LLCs, this discipline is straightforward. Each LLC opens its own account under its own EIN, keeps its own books, and never shifts money to another entity without documenting the transfer as a proper loan, capital contribution, or distribution. That simplicity, more than anything else, is why many Michigan attorneys prefer stacking separate LLCs over importing a series LLC from another state.
Michigan does not require you to file an operating agreement with the state, but every LLC in a multi-entity structure should have one, and each agreement should identify which assets belong to that LLC and expressly prohibit commingling with your other entities. That written boundary is what you point to when someone later tries to argue the entities were really one.