Michigan LLC Operating Agreement: What Banks and Courts Actually Look For

Michigan does not require you to have an operating agreement to form or maintain an LLC. Your bank almost certainly will. That gap — between what the state accepts and what a business banker, a title company, an SBA lender, or a judge expects to see — is the entire reason a Michigan LLC operating agreement matters. Nobody at LARA will ever ask for yours. The branch manager at your credit union will ask for it before she opens the account, and if your LLC ever ends up in front of a Michigan circuit court, the judge will read it as the controlling document on everything from who had authority to sign to who owns what.

Here’s what actually goes in one, what the Michigan Limited Liability Company Act does to you if you skip it, and how to get one that reflects your real business instead of a fill-in-the-blank PDF.

Why the state doesn’t care and your bank does

The Michigan LLC Act (MCL 450.4101 et seq.) makes the operating agreement optional and internal. To create the entity, the Corporations, Securities & Commercial Licensing Bureau within LARA wants exactly three things: Articles of Organization filed through the MiBusiness Registry Portal, the $50 filing fee, and a resident agent with a Michigan address. Want it faster? Michigan offers 24-hour expedited review for an extra $50. After that, the state’s only recurring demand is a $25 annual statement due every February 15. Nothing in that sequence involves an operating agreement, and there is no place to upload one.

Banks operate under a different rulebook. Federal customer due diligence obligations require a bank to identify the beneficial owners behind a legal entity customer and to confirm who has authority to act for it. Your Articles of Organization don’t answer either question — a Michigan filing lists your agent and registered office, and it does not have to name the members or their ownership percentages. So the bank asks for the one document that does: the operating agreement.

When a business banker flips through yours, she is looking for four specific things, usually in this order:

Who the members are, and what percentage each one owns. She needs names that match the IDs in front of her, and ownership figures she can use to decide whose photo ID and Social Security number go in the file.
Who can sign. A clause naming authorized signers, or a management provision she can point to, showing the person in the chair has authority to bind the LLC.
Whether the name and formation date line up with the Articles of Organization and the IRS EIN confirmation letter.
Signatures. An unsigned agreement is a draft, and most banks treat it that way.

Expect to bring all of it to the appointment:

Document	Who issues it	What the bank uses it for
Articles of Organization (filed copy)	LARA / MiBusiness Registry Portal	Proof the entity legally exists
EIN confirmation letter (CP 575 or 147C)	IRS	Tax ID for the account
Operating agreement, signed	You	Ownership, authority, signers
Government photo ID for each owner	State	Beneficial owner identification
Banking resolution or certificate of authority	You (bank form)	Written confirmation of signers

If you don’t have your federal tax ID yet, get that squared away before the bank appointment — our EIN filing service handles the IRS application so you’re not stuck re-scheduling because one document is missing.

What Michigan courts look for in an operating agreement

Two situations put your agreement in front of a judge, and they call for different things.

Situation one: someone is trying to reach your personal assets. Michigan courts will pierce the LLC veil in narrow circumstances — broadly, where the entity was a mere instrumentality of its owner, was used to commit a wrong, and that wrong caused an unjust loss to the plaintiff. Having an operating agreement doesn’t create a shield by itself. What it does is supply evidence on the first element. An LLC with a signed agreement, records of member decisions, and a clear separation between the company’s money and the owner’s money looks like a real entity. An LLC with no governing document, no records, and one commingled checking account looks like a sole proprietorship with a certificate. That’s the contrast that matters in a courtroom.

Situation two: the members are fighting each other. This is where the absence of an agreement gets expensive. The Act supplies defaults for almost every internal question, and those defaults were written to resolve disputes, not to match anyone’s business plan. Under MCL 450.4401, for instance, your LLC is member-managed unless the Articles of Organization say otherwise — so the silent partner who put in the money and expected no operational role may legally have full management authority. The Act also gives members a remedy for willfully unfair and oppressive conduct by those in control (MCL 450.4515), and the scope of that claim depends heavily on what the members actually agreed to in writing.

One Michigan-specific wrinkle worth knowing: the Act’s definitions section (MCL 450.4102) frames an operating agreement as a written agreement among the members. Handshake understandings, group texts, and “we always said it would be 60/40” are a much harder sell here than in states that recognize oral operating agreements. If it isn’t written down, expect to fall back on the statutory default.

The defaults you inherit by staying silent

Issue	If you have no agreement	What a drafted agreement does
Management	Member-managed by default unless the Articles say manager-managed	Names managers, defines their authority and spending limits
Voting	Statutory default rules tied to members’ economic interests, not necessarily one vote per person	Sets the exact voting formula and which decisions need unanimity
Profit splits	Tied to capital contributions — sweat equity gets nothing extra	Allocates profits the way the partners actually negotiated
Distributions	No obligation to distribute; no schedule	Sets when and how cash comes out, and tax-distribution rules
Admitting a new member	Generally requires consent of the existing members	Defines the process and the price
Transferring an interest	A transferee typically receives economic rights only, not management rights, absent consent	Adds right of first refusal and transfer restrictions
A member wants out	No automatic right to be bought out; no valuation method	Buy-sell terms, valuation formula, payment period
Death or divorce of a member	Economic interest passes to heirs or gets pulled into a marital estate	Triggers a mandatory buyout at a defined price
Deadlock	Judicial dissolution is a real outcome	Tiebreakers, mediation, buy-sell shotgun clauses
Pay for working in the business	Members generally aren’t entitled to compensation for services	Sets salaries, guaranteed payments, and owner draws

Read that middle column again. Every line is a decision the Legislature made on your behalf because you didn’t make it yourself.

What belongs in a Michigan LLC operating agreement

A usable agreement runs a few pages and covers the following. If yours is missing three or more of these, it’s a formality, not a document.

Formation facts that match your filing — exact entity name as shown on the Articles of Organization, effective date, the county of the principal office, and the resident agent. If you use a commercial agent, note it; if you’re still deciding, our breakdown of how Michigan resident agent requirements work covers the tradeoffs.
Members, capital contributions, and ownership percentages — in a table, with dollar amounts or described property, and a note on whether future contributions are mandatory.
Management structure and authority limits — who signs contracts, who can borrow, and a dollar threshold above which member approval is required. Banks and lenders read this section first.
Voting thresholds — day-to-day by simple majority, listed “major decisions” (selling assets, taking on debt, admitting members, amending the agreement) by supermajority or unanimity.
Profit and loss allocation plus distribution mechanics — including whether the LLC will distribute enough cash for members to pay the tax on allocated income. Pass-through income without a matching distribution is a classic partner dispute.
Transfer restrictions and buy-sell terms — the single most valuable clause in a multi-member agreement. Cover voluntary sale, death, disability, divorce, bankruptcy, and expulsion, with a valuation method (fixed formula, multiple of earnings, or appraisal) and payment terms.
Tax classification — default disregarded-entity or partnership treatment, and whether members intend to elect S corporation status.
Books, records, and member access rights — who keeps them, where, and how a member inspects them.
Dissolution and winding up — triggering events and the order in which assets get distributed.
Indemnification of members and managers — the Act permits it, but it works best when spelled out.
Signature blocks and the date. Notarization is not required in Michigan, but a handful of banks and most title companies ask for it. Getting it notarized costs nothing extra at most credit unions.

Some businesses need extra clauses. A rental property LLC should address how title is held, insurance requirements, and capital calls for repairs — see our guide on holding Michigan rental property in an LLC. A construction or trades company should address licensing, who holds the residential builder license, and equipment ownership; our contractor LLC guide walks through that. A two-person service business where one partner brings the clients needs a non-solicitation provision, or the agreement is worth very little the day that partner leaves.

Free template vs. a personalized agreement

Free templates are fine at one thing: putting something in the file so the bank opens the account. They fail in predictable ways. Generic forms reference the wrong state’s statute, leave management structure inconsistent with what you filed with LARA, omit buy-sell terms entirely, and include blanks people never fill in — which is worse than having no clause, because it shows a term was contemplated and abandoned.

The cost of getting it wrong isn’t the template. It’s the hourly bill when two members disagree about a percentage that was never written down.

Our $49 personalized operating agreement is drafted to Michigan’s LLC Act with your actual member names, ownership percentages, capital contributions, management structure, and voting thresholds filled in — not blanks. It’s included in our formation packages and available on its own if you already filed. For the full picture on formation, agent, and annual costs before you commit, run the numbers through our Michigan LLC cost calculator.

Frequently Asked Questions

Do I need an operating agreement for a single-member LLC in Michigan? Not legally, but practically yes. Banks still request one to confirm you’re the sole owner and authorized signer, and in a veil-piercing fight the agreement is part of the evidence that you treated the LLC as a separate entity rather than a second wallet.

Do I file my operating agreement with LARA? No. Michigan has no mechanism for filing or recording it, and there’s no fee attached. Keep the signed original with your company records and give copies to your bank, accountant, and any lender who asks.

Can I write one myself? You can, and Michigan won’t stop you. The risk is subtle: a homemade agreement that contradicts your Articles of Organization on management structure, or that omits a buyout method, creates exactly the ambiguity a court has to resolve later.

What happens if all the members verbally agree to change something? Amend the agreement in writing and have everyone sign. Michigan’s statutory definition of an operating agreement contemplates a written document, so an unwritten change is a weak position if the deal later sours.

Does having one mean I can skip the annual statement? No — they’re unrelated. The $25 annual statement is due to LARA every February 15 regardless of your internal documents, and missing it puts your good standing at risk. Our annual statement filing service handles the deadline if you’d rather not track it.

If you’re forming now, the operating agreement should be drafted alongside your Articles of Organization so the two documents agree with each other from day one. You can start your Michigan LLC filing here — the personalized agreement is part of it.