Wyoming DBA (Doing Business As) Guide (2026)
In Wyoming a DBA is called a Trade Name and is filed with the Secretary of State under W.S. 40-2-101 through 40-2-111 — never with a county clerk. It costs $100, lasts ten years and renews for $50. Registration is OPTIONAL: W.S. 40-2-104(a) says a person who adopts a trade name 'may file' an application, and W.S. 40-2-109 preserves your common-law rights in a name you simply use.
The one thing to knowYour signature must be acknowledged before a notarial officer (W.S. 40-2-104(a)(iv)), and the Secretary of State will not register a name you are not already using. Get the form notarized before you post it.
The process
- Decide whether you need to file at all
Registration is permissive in Wyoming: W.S. 40-2-104(a) says a person who adopts a trade name 'may file' an application, and W.S. 40-2-109 preserves your common-law rights in a name you simply use. Registering gives you a statewide record and blocks later registrations of the same name; it is not a license to trade, and nothing in the chapter forbids trading under an unregistered name.
- Fill the form in duplicate and have it notarized
The application is filed in duplicate and the applicant's signature must be acknowledged before a notarial officer. The Secretary of State returns one date-stamped copy (W.S. 40-2-104(b)). If the applicant is a business entity it must already be registered and in good standing.
- Post it with $100
Send a check or money order for $100 payable to the Wyoming Secretary of State, Herschler Building East, Suite 101, 122 W 25th Street, Cheyenne, WY 82002-0020. Processing takes up to 15 business days and Wyoming statutes provide no expedited option.
DBA filing by county — all 23 Wyoming counties
Wyoming Trade Names (DBAs) are filed with the Secretary of State under W.S. 40-2-104(a), not with counties. Registration is optional.
| County | Where to file |
|---|---|
| Albany County | Filed with the Wyoming Secretary of State, not the county |
| Big Horn County | Filed with the Wyoming Secretary of State, not the county |
| Campbell County | Filed with the Wyoming Secretary of State, not the county |
| Carbon County | Filed with the Wyoming Secretary of State, not the county |
| Converse County | Filed with the Wyoming Secretary of State, not the county |
| Crook County | Filed with the Wyoming Secretary of State, not the county |
| Fremont County | Filed with the Wyoming Secretary of State, not the county |
| Goshen County | Filed with the Wyoming Secretary of State, not the county |
| Hot Springs County | Filed with the Wyoming Secretary of State, not the county |
| Johnson County | Filed with the Wyoming Secretary of State, not the county |
| Laramie County | Filed with the Wyoming Secretary of State, not the county |
| Lincoln County | Filed with the Wyoming Secretary of State, not the county |
| Natrona County | Filed with the Wyoming Secretary of State, not the county |
| Niobrara County | Filed with the Wyoming Secretary of State, not the county |
| Park County | Filed with the Wyoming Secretary of State, not the county |
| Platte County | Filed with the Wyoming Secretary of State, not the county |
| Sheridan County | Filed with the Wyoming Secretary of State, not the county |
| Sublette County | Filed with the Wyoming Secretary of State, not the county |
| Sweetwater County | Filed with the Wyoming Secretary of State, not the county |
| Teton County | Filed with the Wyoming Secretary of State, not the county |
| Uinta County | Filed with the Wyoming Secretary of State, not the county |
| Washakie County | Filed with the Wyoming Secretary of State, not the county |
| Weston County | Filed with the Wyoming Secretary of State, not the county |
Wyoming-specific details
Registration is $100 and lasts ten years (W.S. 40-2-104(a), 40-2-105(a)). Renewal is $50 and must be filed in the six months before it expires. Reserving a name ahead of filing is $30 and holds it for 120 days, not renewable (W.S. 40-2-103(a)). Assigning a registered trade name to someone else later costs $25 (W.S. 40-2-106).
What to bring
- The trade name you are already using
- Your name and business address — and the state of incorporation if you are a company
- A description of the business you actually conduct
- A notary, for the signature
- A check or money order for $100
Frequently asked questions
What is a DBA called in Wyoming?
A Trade Name, registered with the Secretary of State under W.S. 40-2-101 through 40-2-111.
Do I have to register?
No. W.S. 40-2-104(a) says you MAY file, and W.S. 40-2-109 protects common-law rights in an unregistered name. Registering gives you a statewide record, not permission to trade.
Where do I file?
With the Wyoming Secretary of State, by post. Counties do not file trade names.
How much does it cost?
$100 to register and $50 to renew. Reserving a name first is $30 for 120 days.
How long is it valid?
Ten years, renewable in the six months before it expires.