Assumed Names

General Information

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 [2] 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 two or more parties, but may be dissolved or changed by the signature of any party. Business name is 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 Office:

Walk-In Process

  1. PRINT OR TYPE ALL INFORMATION ON THE FORMS, except signatures. BLACK INK ONLY. Do not use pencil or red ink. Post Office box numbers are not acceptable for the business address.
  2. Signatures should be placed on the lines found at the middle of the form. ALL LISTED OWNERS MUST SIGN THE CERTIFICATE.
  3. 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.
  4. Walk all three [3] 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. PLEASE SEND MONEY ORDERS ONLY. All personal checks will be returned. Make money orders payable to the Wayne County Clerk. Two [2] certified copies of the certificate will be returned to you after filing.

  5. If you change your business address, you must notify this office.
  6. If you dissolve your business, you should file a certificate of discontinuance with this office.
  7. 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.
  8. 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...

Service Available

Registration of the business name protects the use of that name (in Wayne County) for five [5] years. Continued use of a name occurs by renewing registration at five [5] 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:

Check With:
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

Cathy M. Garrett
Wayne County Clerk
(313) 224-6262
Assumed Names