How Much Does a DBA Cost in New Hampshire? (2026)
A DBA (“doing business as”) in New Hampshire costs $50, filed with the Secretary of State (state level). No newspaper publication is required. Registration renews: 5 years.
Verified July 2026 from official sources. How we verify fees.
What it costs and where to file in New Hampshire
- Filing fee: $50
- Filed at: State level
- Newspaper publication: Not required
- Renewal: 5 years
Good to know
Unlike its town-based neighbors, New Hampshire files trade names centrally with the Secretary of State. A DBA lets a sole proprietor or existing business operate under a different name — it is not a business entity and offers no liability protection. If you want that, compare the cost of forming an LLC in New Hampshire.
Frequently asked questions
How much does a DBA cost in New Hampshire?
$50, filed with the Secretary of State (state level).
Where do I file a DBA in New Hampshire?
You file with the Secretary of State (state level).
Does a New Hampshire DBA expire?
Renewal: 5 years.