Obtain a DBA registration form for your jurisdiction. You should be able to obtain this form from your County Clerk, or Secretary of State in states that handle DBA filings at the state level rather than through the county government.
Fill in the required information on the form. Typically, this will include your name, address, city, state and ZIP code. Confirm that all information is entered correctly.
Write your DBA or fictitious name on the form. Generally, you cannot use a DBA that is already being used in your state. Perform a thorough name check through your county or state website, or consider having an online legal document preparation and filing service help you with this task.
Write the address of your primary business location in the designated space on the form. Some jurisdictions do not allow the use of post office box addresses, so you should be prepared to provide a physical address.
Specify your business entity type on the form. The choices typically include sole proprietor, partnership, LLC or corporation.
Provide any other information requested on the DBA form. In some areas, you'll be asked to provide a brief statement describing your company's products or services. Some states require you to disclose any previous fictitious names for which you have previously applied.
Sign and date the form. Your state may require that you do this in the presence of a notary.