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Before going into the details, here is a quick checklist for registering a DBA in Michigan.
| Official Term | Assumed name (also called a certificate of assumed name or a DBA) |
|---|---|
| Filing Agency | County clerk for sole proprietors and general partnerships [1]; the Michigan Department of Licensing and Regulatory Affairs (LARA), Corporations, Securities & Commercial Licensing Bureau, for LLCs and corporations [2] |
| Form | County assumed name certificate for sole proprietors and partnerships; Certificate of Assumed Name, Form CSCL/CD-541, for LLCs and corporations [3] |
| State Fee | $25 to file Form CSCL/CD-541 with LARA [3]. County fees vary; the statutory county fee is $6, though charter counties may set a higher fee 1 [4] |
| Processing Time | LARA filings can be submitted online for faster processing; county filings are processed by each county clerk [5] |
| Renewal Required | Yes. A LARA certificate of assumed name expires on December 31 of the fifth full calendar year after filing and can be renewed in five-year periods [2]. County registrations are also renewed every five years [4] |
| Cancellation | LLCs and corporations file a certificate of termination with LARA [2]; sole proprietors and partnerships file a certificate of discontinuance with the county clerk [4] |
A DBA stands for "Doing Business As." It is an alternative name your business uses instead of its registered legal name. In Michigan, the official term is "assumed name," and the filing is called a certificate of assumed name.
Any type of business can register an assumed name in Michigan. This includes sole proprietors, general partnerships, LLCs, and corporations. The filing path depends on your business structure: unincorporated businesses file at the county level, and registered entities file with the state.
A DBA does not create a new legal entity. It does not change your tax status, your liability protection, or your ownership structure. It is only a name your business is authorized to operate under.
| Brand Fit | Commercial Banking | Multi-Entity Branding | Privacy & Trust |
|---|---|---|---|
| Sole proprietors operate under their personal names by default. An assumed name lets you do business under a professional brand instead. | Michigan banks generally require a registered assumed name before opening a business account in a name other than your legal name. | One entity can run several brands or product lines under separate assumed names without forming a new company for each. | An assumed name keeps your personal identity off public branding and signals to customers that you are an established business. |
How you register an assumed name in Michigan depends on your business type. Sole proprietors and general partnerships file a certificate with the county clerk in each county where they conduct business, as required by the assumed names act [1]. LLCs and corporations file a Certificate of Assumed Name, Form CSCL/CD-541, with the Michigan Department of Licensing and Regulatory Affairs (LARA) [3].
Your assumed name should be distinguishable from names already in use. County clerks are authorized to reject an assumed name that is likely to mislead the public or is so similar to an existing business name that it causes confusion. [4]
Search for conflicts before you file. LLCs, corporations, and other state-registered entities appear in the Michigan Business Entity Search, and sole proprietors and partnerships should also check the records of the county clerk where they plan to file. [6]
Michigan assumed name rules are straightforward, but a few hard limits apply.
| Your assumed name must be distinguishable | Match designators to your real structure | Restricted words require approval |
|---|---|---|
| A county clerk may reject a name that is likely to mislead the public or is confusingly similar to an existing business name. [4] | A sole proprietor should not use "LLC," "Inc.," or "Corp" in an assumed name. An organizational identifier should match your actual business structure. | Certain regulated words, such as "bank," "insurance," or "trust," can require approval from the relevant state authority before they may be used in a business name. |
Run a trademark search at the U.S. Patent and Trademark Office (USPTO) as well. Filing an assumed name in Michigan gives you no trademark rights and does not stop a federal trademark holder from challenging your use of the name. [7]
Your filing office depends on your business type. There are two paths.
| Situation | Fee |
|---|---|
| File Form CSCL/CD-541 with LARA (LLC or corporation) | $25 [3] |
| File with a county clerk (sole proprietor or general partnership) | Statutory fee is $6; charter counties may charge more 1 [4] |
Filing fees are generally non-refundable. A rejected or incomplete application must be corrected and re-filed.
LARA processes Form CSCL/CD-541 and returns confirmation of your certificate; online filings are generally processed faster than mailed ones [5]. County clerks process certificates locally and return certified copies to you. [4]
Keep your file-stamped certificate. Banks, vendors, and payment processors will ask for it before they let you operate or accept funds under the assumed name.
A Michigan assumed name is not permanent. A LARA certificate of assumed name is effective until December 31 of the fifth full calendar year after it is filed, and you can extend it for an additional five-year period by filing a renewal no earlier than 90 days before it expires [2]. County registrations also run for five years and are renewed at five-year intervals. [4]
A DBA and an LLC are not the same thing. This is one of the most common points of confusion for new business owners, and getting it wrong can be costly.
A DBA is only a name. It does not create a legal entity. It does not protect your personal assets. If someone sues your business, your personal finances are exposed.
Forming an LLC means you are creating a separate legal entity. That separation generally protects your personal finances, home, and savings from business debts and lawsuits.
If you are a sole proprietor who wants a business name without incorporating, an assumed name is a fast, affordable option. If you want liability protection, you need an LLC or a corporation.
Many businesses do both: they form an LLC and then apply for a DBA to run a brand under a name different from the LLC legal name.
| Feature | DBA (Assumed Name) | LLC |
|---|---|---|
| Creates a legal entity | No | Yes |
| Personal asset protection | No | Yes |
| Changes the tax treatment | No | Can elect a different tax status |
| Required to operate under a different name | Yes, if the name differs from your legal name | No, the LLC name is its legal name |
| Cost to register | $25 state or county fee + Swyft service fee | State filing fee + Swyft service fee |
Most Michigan assumed name problems come down to the same handful of errors. Here is what to watch out for before you file.
Sole proprietors and general partnerships file with the county clerk [1], while LLCs and corporations file Form CSCL/CD-541 with LARA. Filing in the wrong place wastes time and money. [3]
Checking Google or a domain registrar is not an official search. Use the Michigan Business Entity Search for state entities and the county clerk records for local filings. [6]
A sole proprietor cannot include "LLC," "Inc.," or "Corp" in an assumed name unless the business is actually organized that way. The designator must match your real structure.
A Michigan assumed name expires after a set term, not forever. A LARA certificate ends on December 31 of the fifth full calendar year after filing. Calendar the renewal so your filing does not lapse. [2]
An assumed name is only a name. It does not create a legal entity and does not shield your personal finances. If you want protection, form an LLC.
State or county approval is not trademark clearance. A federal trademark holder could still force you to stop using the name. [7]
[1] Michigan Legislature. MCL 445.1, Certificate Required to Carry On Business Under Assumed Name. Accessed on June 4, 2026.
[2] Michigan Legislature. MCL 450.4206, Limited Liability Company Act, Assumed Name. Accessed on June 4, 2026.
[3] Michigan Department of Licensing and Regulatory Affairs. Certificate of Assumed Name, Form CSCL/CD-541. Accessed on June 4, 2026.
[4] Wayne County Clerk. Assumed Names. Accessed on June 4, 2026.
[5] Michigan Department of Licensing and Regulatory Affairs. Corporations Online Filing System. Accessed on June 4, 2026.
[6] Michigan Department of Licensing and Regulatory Affairs. Michigan Business Entity Search. Accessed on June 4, 2026.
[7] U.S. Patent and Trademark Office (USPTO). Trademarks. Accessed on June 4, 2026.
[8] Michigan Legislature. MCL 450.1217, Business Corporation Act, Assumed Name. Accessed on June 4, 2026.
Doing Business As (DBA) rules are highly localized. Some states handle them regionally, while others use local counties. Select a state below to see how to register your brand name.