How to file a DBA in New Hampshire
Filing a DBA (Doing Business As, also called a fictitious or trade name) in New Hampshire costs $50 in state fees, lasts 5 years, and is registered with the New Hampshire Secretary of State. We file it for you at the state cost, no service fee.
New Hampshire DBA at a glance
| State filing fee | $50 |
|---|---|
| Filing authority | New Hampshire Secretary of State |
| Term length | 5 years (renewable) |
| Renewal required | Yes, before expiration |
| File.Business fee | $0 |
When you need a DBA in New Hampshire
You need a DBA in New Hampshire when your business operates under a name different from its legal name. Common cases:
- A sole proprietor in New Hampshire doing business under a brand name instead of their legal name
- An LLC or corporation in New Hampshire marketing under a brand different from the registered entity name
- An out-of-state company doing business in New Hampshire under a different name
- Multiple brands operated under one parent LLC in New Hampshire
How to file a DBA in New Hampshire: 5 steps
- Choose your DBA name. Search the New Hampshire business name database to confirm the name is available. It must not be deceptively similar to existing registered names.
- Verify name compliance. New Hampshire prohibits names that imply a corporation (Inc., Corp.) unless your entity actually is one. Avoid restricted words.
- Prepare the DBA filing. The New Hampshire Secretary of State requires the legal name of the owner, the DBA name, business address, and a description of business activities.
- Pay the $50 state fee and submit. File online with the New Hampshire Secretary of State or use File.Business to handle it for you at the state cost.
- Track the 5-year renewal. New Hampshire DBAs expire and require renewal. We track this for you automatically with our compliance calendar.
File your New Hampshire DBA now
Our team prepares the filing, submits it to the New Hampshire Secretary of State, and tracks renewal. You pay only the $50 state fee. No service charges.
Start my New Hampshire DBADBA vs LLC in New Hampshire: which do you need?
A DBA is a name registration, not a business structure. It does not provide liability protection, separate tax treatment, or formal recognition as a business entity. If you want personal liability protection while operating under a brand name in New Hampshire, you typically form an LLC and then optionally file a DBA for additional brands.
Compare your options: Form an LLC in New Hampshire or Form a Corporation in New Hampshire.
New Hampshire DBA frequently asked questions
How long does it take to file a DBA in New Hampshire?
Processing time with the New Hampshire Secretary of State varies. Online filings are typically processed within 2 to 5 business days. We submit the filing the same day you order.
How long is a New Hampshire DBA valid?
5 years from filing date. You must renew before expiration to keep the name registration active.
Do I need an EIN if I file a DBA in New Hampshire?
Only if you have employees, file certain tax forms, or open a business bank account in the DBA name. Sole proprietors with no employees can use their SSN. Get an EIN.
Can I file a DBA in New Hampshire for an out-of-state LLC?
Yes. If your LLC is registered in another state and does business in New Hampshire, you typically need to foreign-qualify in New Hampshire first, then file the DBA.
Does a New Hampshire DBA protect my brand from others using the same name?
A DBA only reserves the name with the New Hampshire Secretary of State. For broader brand protection, file a federal trademark with the USPTO.
On the $129/yr Compliance Annual Filings plan, we cover state late fees.
When you autofile your annual report through the $129/yr plan and we miss the deadline, we pay the state's late fee. The guarantee applies to that specific plan and the filings it includes. Other File.Business services are billed at the prices on this page.