Key Takeaways
- Search tool: MiBusiness Registry, free, run by the Michigan Department of Licensing and Regulatory Affairs (LARA), Corporations, Securities & Commercial Licensing Bureau
- Search by business name, filing/id number, resident agent name, and officer/manager/individual name
- Name reservation available for $25 (180 days)
- Michigan does not require LLC members/owners to be listed in the public record
- New LLC names must include a designator such as "Limited Liability Company," "LLC," or "L.L.C."
- Same-day name-availability confirmation and formation filing available through LLC Attorney at no markup on state fees
Searching for a Michigan business name changed in 2025 — LARA fully retired its old CORP/COFS system in favor of the new MiBusiness Registry, so guides and bookmarks pointing to the legacy portal no longer work. The tool itself is straightforward, but Michigan's distinguishability standard and its state/county split for DBA filings still trip up first-time filers.
This guide covers exactly how to search MiBusiness Registry for an existing Michigan business or check LLC name availability in 2026 — the current search tool and its quirks, Michigan's distinguishable-name standard, name reservation, the LLC-vs-sole-proprietor DBA split, and what a search actually reveals about an existing business.
How to Search for a Business in Michigan
Use the Michigan Department of Licensing and Regulatory Affairs (LARA), Corporations, Securities & Commercial Licensing Bureau's MiBusiness Registry to search for an existing business or check whether a new LLC name is available. Search by business name, filing/id number, resident agent name, and officer/manager/individual name. The search is free.
Search directly at mibusinessregistry.lara.state.mi.us.
MiBusiness Registry is the platform LARA fully migrated to in 2025, replacing the old CORP/COFS search — bookmarks or instructions pointing to the legacy portal are now dead ends. The search normalizes punctuation and spacing and ignores case (results display in all caps), so search the core name without worrying about exact formatting. Try the individual-name search mode if you're trying to find every entity tied to a specific resident agent or officer rather than a business name.
The entity detail page shows current status, formation date, resident agent name and Michigan address, and full filing history, with document images — Articles of Organization, annual statements, amendments — viewable and downloadable directly through the portal at no charge.
Checking Name Availability Before You File
Run your proposed name through MiBusiness Registry before filing, but treat a clean result as directional, not final — LARA only confirms availability when it actually processes your Articles of Organization or a reservation. Given the 2025 system migration, double-check that any bookmarked search link points to the new mibusinessregistry.lara.state.mi.us domain rather than the retired COFS system.
Michigan's Distinguishability Standard
Michigan requires a proposed name to be "distinguishable upon the record" from every other active entity name on file — a stricter standard than simply avoiding exact duplicates. LARA doesn't publish a bright-line mechanical test, so a name that looks clear in the portal can still be flagged as too similar when a human reviewer processes your filing.
Reserving a Name in Michigan Before You Form
Name reservation available: For $25, you can reserve your chosen name for 180 days before filing.
File an Application for Reservation of Name online through michigan.gov/corpfileonline or by mail. A successful reservation holds the name for 180 days (six months) from the date it's processed, giving you time to prepare and file your Articles of Organization without risking another filer taking the name first.
Searching for DBAs and Fictitious Names in Michigan
Michigan splits DBA filing by entity type, which trips up a lot of filers. LLCs, corporations, and LPs file a Certificate of Assumed Name directly with LARA (state level) for $10, valid five years and renewable. Sole proprietors and general partnerships, by contrast, file at the county Clerk's office instead ($10–$16 depending on the county) — an LLC's assumed name will show up in MiBusiness Registry, but a sole proprietor's county-level DBA will not.
Michigan LLC Naming Requirements
Your new LLC's name must include a designator such as "Limited Liability Company," "LLC," or "L.L.C.".
LARA maintains an official Restricted Words list requiring prior regulatory approval or proof of licensure before the word can appear in a name — this includes Bank, Trust, Insurance, University, Attorney, and Engineer, among other financial, educational, and licensed-profession terms.
An Available LLC Name Isn't the Same as a Trademark-Safe Name
Michigan offers its own state trademark and service mark registration under the Trademarks and Service Marks Act (Forms 600/602), entirely separate from LLC entity-name registration. A term of 10 years applies, renewable for successive 10-year terms.
MiBusiness Registry only checks your name against other Michigan-registered entities, not federal trademarks. Search the USPTO's Trademark Electronic Search System (TESS) separately before committing to a name, since a clear Michigan entity search provides zero protection against an existing federal mark held by a business in another state.
What a Michigan Business Search Reveals
Standard (non-professional) Michigan LLCs generally do not have to list members or managers in public filings unless the management structure changes and triggers disclosure. Professional LLCs (PLLCs), however, must list all members/managers by name. The resident agent's name and Michigan address are always part of the public record regardless of entity type.
Michigan does not require LLC members/owners to be listed in the public record, so a standard search will not reveal ownership information.
MiBusiness Registry lets you view and download scanned images of an entity's actual filed documents — Articles of Organization, Certificates of Assumed Name, annual statements — directly from the entity detail page.
Getting a Michigan Certificate of Good Standing
You can confirm an LLC's good standing status and request a Certificate of Good Standing through the same MiBusiness Registry, for $10 online, by mail, or by phone ($12 in-person) (same-day for online orders; a 25% surcharge applies for expedited service).
How to Search and Reserve Your Michigan LLC Name
If You Do It Yourself
Step 1 — Search the MiBusiness Registry at mibusinessregistry.lara.state.mi.us.
Search by business name, filing/id number, resident agent name, and officer/manager/individual name to confirm your desired name isn't already taken.
Step 2 — Apply the state's distinguishability standard, not just an exact-match check.
Michigan requires a proposed name to be "distinguishable upon the record" from every other active entity name on file — a stricter standard than simply avoiding exact duplicates. LARA doesn't publish a bright-line mechanical test, so a name that looks clear in the portal can still be flagged as too similar when a human reviewer processes your filing.
Step 3 — Check your name against restricted/regulated words.
LARA maintains an official Restricted Words list requiring prior regulatory approval or proof of licensure before the word can appear in a name — this includes Bank, Trust, Insurance, University, Attorney, and Engineer, among other financial, educational, and licensed-profession terms.
Step 4 — Confirm your name includes a required LLC designator.
Your name must include a designator such as "Limited Liability Company," "LLC," or "L.L.C.".
Step 5 — Reserve your name for $25 if you're not ready to file yet.
File an Application for Reservation of Name online through michigan.gov/corpfileonline or by mail. A successful reservation holds the name for 180 days (six months) from the date it's processed, giving you time to prepare and file your Articles of Organization without risking another filer taking the name first.
Step 6 — Run a separate USPTO trademark search before you commit.
MiBusiness Registry only checks your name against other Michigan-registered entities, not federal trademarks. Search the USPTO's Trademark Electronic Search System (TESS) separately before committing to a name, since a clear Michigan entity search provides zero protection against an existing federal mark held by a business in another state.
Step 7 — File your formation documents promptly once you've confirmed availability.
If you didn't reserve the name, nothing holds it for you — another filer could take it first.
Step 8 — Watch for Michigan-specific search quirks.
The most distinctive Michigan quirk is the state/county split for DBA filings: LLCs and corporations register an assumed name with LARA directly, while sole proprietors and general partnerships must go to the county Clerk instead — using the wrong path means your DBA won't show up where you expect it to. The second trap is the 2025 platform migration itself; anything referencing the old COFS system, including phone-based certificate ordering, no longer works.
If LLC Attorney Does It for You
- Submit your desired business name at llcattorney.com along with one or two backup options.
- LLC Attorney runs the Michigan name-availability search, checks it against restricted-word rules, and confirms your designator is correctly formatted before filing.
- Receive confirmation once your name is filed, plus access to flat-fee attorney consultations (no retainer) if a trademark conflict or distinguishability question comes up.
When Should You Talk to an Attorney About Your Michigan LLC Name?
Talk to an attorney before finalizing a Michigan LLC name if you're forming a professional LLC (PLLC) and are unsure whether member disclosure requirements apply to your licensed field, if your name is close to an existing Michigan trademark registration under the Trademarks and Service Marks Act, or if you need to sort out whether your DBA should be filed with LARA (state level) or your county Clerk based on your entity type.
Is Michigan a State Where Name Clearance Complexity Matters More?
Michigan is worth flagging as more procedurally involved than average because LARA fully retired its old CORP/COFS search system in 2025 in favor of MiBusiness Registry, and phone-based certificate orders are no longer accepted at all. Filers relying on older guides, saved bookmarks, or phone-order habits will hit dead ends and need to re-learn the new portal.
What You Actually Get With LLC Attorney's Michigan Name Search
Michigan's 2025 platform migration means outdated instructions are everywhere — LLC Attorney runs your name check on the current MiBusiness Registry system as part of every formation order, so you're never relying on a dead COFS bookmark or a retired phone-order process.
- A Michigan name-availability search run for you before you pay any state filing fee.
- Restricted-word and distinguishability screening, so your filing isn't rejected for a naming issue you didn't know about.
- Formation starting at $49, with your confirmed name filed the same day where the state allows it.
- Access to professionally trained Business Success Advisors at no charge, plus flat-fee attorney consultations (no retainer) for trademark-conflict questions.
Michigan's LLC-vs-sole-proprietor DBA split (state-level for entities, county-level for individuals) is an easy place to file in the wrong location — LLC Attorney routes your assumed name filing correctly the first time.
Ready to Form Your Michigan LLC?
Once you've confirmed your name is available, LLC Attorney can handle the rest of your Michigan LLC formation, starting at $49. See our full pricing for all service tiers.
Frequently Asked Questions
Yes. Searching MiBusiness Registry is completely free, with no account or login required for a basic business name or individual name search.
Search MiBusiness Registry for your proposed name and review the results manually — Michigan requires names to be "distinguishable upon the record" from every other active entity, a standard LARA applies at the time it actually processes your filing, not at search time. A clean search result is a strong signal, not a guarantee.
Yes. File an Application for Reservation of Name online or by mail for $25, which holds your chosen name for 180 days (six months) so you have time to prepare and file your Articles of Organization.
Generally no for a standard LLC — Michigan doesn't require member or manager names in public filings unless the management structure changes. Professional LLCs (PLLCs) are the exception and must list all members/managers. The resident agent's name and address are always public.
You can order a Certificate of Good Standing through MiBusiness Registry for $10 online, by mail, or by phone ($12 in-person), with same-day processing available online and a 25% surcharge for expedited service.
It depends on your entity type. LLCs and corporations file a Certificate of Assumed Name directly with LARA for $10 (five-year term, renewable). Sole proprietors and general partnerships instead file at the county Clerk's office for $10–$16 depending on the county.
Your Michigan LLC name must include "Limited Liability Company," "LLC," or "L.L.C." and must be distinguishable upon the record from every other active entity name on file with LARA. Restricted terms like Bank, Trust, Insurance, University, Attorney, and Engineer require prior regulatory approval or proof of licensure.
No. MiBusiness Registry only compares your name against other Michigan-registered entities — it has nothing to do with federal trademark rights. Search the USPTO's TESS database separately, and consider Michigan's own state trademark registration (Forms 600/602) if you want protection beyond your entity name.
Yes. LLC Attorney runs a Michigan name-availability search as part of every formation order, and flags any restricted-word or distinguishability issue before you pay a filing fee.