Protection of a business name is established by the registration of that name through the County Clerk's office in the county in which the business is located.
There are two  types of registration at the county level: An Assumed name consists of one or more parties. It is the more binding of the types as all parties listed must sign the papers in front of a notary and no changes can be made without the signatures of all parties involved. A Co-Partnership is started by two or more parties, but it may be dissolved or changed by the signature of any party. Business names are subject to our approval.
Your application MUST BE filed in person at the Wayne County Clerk's Office. You can also mail your completed application to the Wayne County Clerk's Office. **Please note that the application must be notarized and must be accompanied by your current state-issued photo identification (Drivers License or Michigan State I.D. card).
All required documents must be presented IN PERSON to the County Clerk's office.
- PRINT OR TYPE ALL INFORMATION ON THE FORMS, except signatures. Please use BLACK INK ONLY. Do not use pencil or red ink. Post office (PO) box numbers are not acceptable for the business address.
- Signatures should be placed on the lines found on the middle of the form. ALL LISTED OWNERS MUST SIGN THE CERTIFICATE.
- ALL SIGNATURES MUST BE NOTARIZED. All notaries public must legally sign and print or stamp their name and expiration dates on each certificate; as well as the names of the persons who appeared before the notary.
- Walk all three  copies [original +2] along with the $16.00 filing fee to:
Wayne County Clerk's Office
201 Coleman A. Young Municipal Center
Detroit, MI 48226
*Please Note: We no longer accept personal checks. All personal checks will be returned. Make money orders payable to the Wayne County Clerk. Two  certified copies of the certificate will be returned to you after filing.
- If you change your business address, you must notify our office.
- If you dissolve your business, you should file a certificate of discontinuance with our office.
- If there is a change of ownership, a certificate of discontinuance should be filed by the previous owner and the new owner or owners must file a new certificate of assumed name or co-partnership.
- Forms for change of address of certificate of discontinuance are available at the address listed above.
Fees and Other Information
- Registration of an Assumed Name $16.00
- Registration of a Co-Partnership $10.00
- A plain copy of either document $ 2.25
- A certified copy of an Assumed Name Document $2.00
- A certified copy of a Co-Partnership $ 2.00
- A consent of service for out of State owner $ 2.00
- A discontinuance of Business Registration Fee $10.00
- A Change of address Fee $10.00
How It Works...
Registration of the business name protects the use of that name (in Wayne County) for five  years. Continued use of a name occurs by renewing registration at five  year intervals.
Who is eligible for the service
A person owning, conducting or transacting a business must be at least 18 years of age.
Tax ID and Licensing Links
The McNamara Building
477 Michigan & Cass Ave. [Basement] 48226
Hours: 8:00am - 4:30pm
Ph: (800) 829-1040 [For tax ID via phone]
Michigan Sales Tax Number
Michigan Dept. of Treasury
Executive Plaza Building
1200 Sixth St. [At Howard St.] 48226
Hours: 8:00am - 4:30pm
Ph: (517) 373-3190 [For tax ID number]
Ph: (800) 487-7000 [For income tax info]
If Doing Business in Detroit Only:
General License Bureau
Consumer Affairs Department
105 City-County Bldg. 48226
Hours: 8:30am - 4:00pm
Ph: (313) 224-3178
Forms of payment accepted
Cash, money orders, in state company checks, cashier and certified checks.
Corporations are registered with the Michigan Department of Commerce, Corporation and Securities Bureau. Obtain a Michigan Sales Tax Number from the Michigan Department of the Treasury. Business Licenses and/or permits are obtained through the city in which the business is located or through the state. Licenses for Businesses located in the City of Detroit are obtained in the City-County Building, Room 156.
For More Information
Michigan Department of Commerce
Corporation & Securities Bureau
6546 Mercantile Way
Lansing, MI 48909
Ph: (517) 241-6470