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.
How New Hampshire compares nationally
Across the 46 states that charge for a DBA filing, the average is about $36 (median $25). At $50, New Hampshire ranks #37 of 46 from the cheapest — above the national average.
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.