How to File a DBA

Step 1: Confirm Whether You Even Need One

A DBA is only required if you want to operate under a name different from your own legal name (as a sole proprietor) or your entity's exact legal name (as an LLC or corporation). If you're operating entirely under your own name as filed, there's nothing to register. See our guide on who needs a DBA if you're not sure your situation requires one.

Step 2: Identify Whether Your State Files at the State or County Level

This is the detail that trips up the most first-time filers, because it varies so much. Ohio and Oklahoma register trade names directly with the Secretary of State, unlike most other states. California and Nevada instead handle DBA filings at the county level, with no statewide registry at all in Nevada's case. A few states split the process, requiring a state-level filing plus separate local newspaper publication, or, like Pennsylvania, requiring publication without any county-level filing involved. Check your specific state's filing agency page before assuming either model applies to you.

Step 3: Check Name Availability

Before submitting anything, search your state's or county's existing business name database to confirm your chosen name isn't identical or confusingly similar to one already on file. Rules vary on how similar is too similar, and some states also restrict certain words, like "LLC" or "Inc.," unless your filing entity is actually organized that way. See our guide on how to register a DBA name for a closer look at the availability check and naming restrictions.

Step 4: Complete the Application

Most DBA applications ask for the same core information: the name you're registering, your or your entity's legal name and address, and the nature of the business. If you're filing on behalf of an LLC or corporation, you'll typically also need the entity's state-assigned file number and the exact legal name as it appears on your Articles of Organization or Incorporation.

Step 5: Pay the Filing Fee

Fees vary enormously by state. On the low end, Kansas charges nothing at the state level since trade names are registered locally instead, and Iowa charges just $5. On the higher end, Maine charges $125 for its Statement of Intention to Transact Business Under an Assumed Name, and Nebraska charges $100 for a Trade Name Registration. Most states fall somewhere between $10 and $50.

Step 6: Complete Any Required Publication

A subset of states require publishing a legal notice about your DBA in a newspaper, either before or after the government filing. Florida requires advertising the name at least once in a newspaper in the county of your principal place of business before filing. Minnesota requires publishing the approved certificate in a qualified newspaper for two successive issues after filing with the Secretary of State. Pennsylvania requires publication in two newspapers, though only for a sole proprietorship or general partnership, not for an LLC or corporation registering the same fictitious name. See our guide on how to publish a DBA notice in a newspaper for which states this applies to and how the process works.

Step 7: File Proof of Publication if Your State Requires It

A few states that require publication also require filing proof of it afterward, on a specific deadline. California requires filing an affidavit of publication with the county clerk within 45 days after publication is completed. Nebraska requires the same within 45 days, filed with the Secretary of State, or the registration is canceled outright. See our guide on DBA affidavit of publication for the states that require this extra step.

Step 8: Use the Approved DBA to Update Your Business

Once approved, use the DBA filing to update your bank account, licenses, contracts, and marketing materials. Keep the original approval document, and any publication proof, in your permanent business records.

Step 9: Track Your Renewal Date

Most states require renewing a DBA periodically, commonly every 2, 3, or 5 years depending on the state, while a few states have no renewal requirement at all. Note your specific renewal date the day your filing is approved; see our guide on DBA renewal requirements by state for your state's term.

Filing for an LLC vs. a Sole Proprietor Looks Different

An LLC's DBA application generally asks for more entity-specific information, like a state file number, than a sole proprietor's does, and some publication rules, like Pennsylvania's, only apply to sole proprietors and partnerships, not to entities. Confirm which rules apply to your specific filer type, not just your state generally.

Processing Times Vary Widely

Some states approve an online DBA filing same-day or within a few business days, while others, particularly those requiring mailed paperwork or newspaper publication first, can take several weeks from start to finish. Build in enough lead time if you have a deadline, like a lease signing or a product launch, tied to having the DBA approved.

A Formation Service Can Handle the Filing, but Not the Liability Decision

LLC Register's $99-a-year registered agent service includes LLC formation in year one and annual report filing; it's focused on entity formation and compliance rather than DBA filings specifically, so confirm what's included if you're using a formation service to help with a DBA as well.

Not Legal Advice

Filing requirements, forms, fees, and publication rules change and vary by state and sometimes by county. Confirm the current process directly with your state's or county's filing agency before submitting an application.