New Hampshire Business Entity Search (2026)

Fact-checked by the LegalGlass editorial team against primary sources · Published Aug 6, 2026 · Last updated Aug 6, 2026

The New Hampshire Secretary of State runs a free online business entity search that anyone can use to look up registered corporations and LLCs by name, ID number, or registered agent. The tool is the primary way to check whether a business name is available before you file, to confirm an entity is active and in good standing, and to find an entity's registered agent and formation date.

What the New Hampshire Business Entity Search Is

The New Hampshire Secretary of State keeps a public register of every corporation, limited liability company, limited partnership, and nonprofit organized in or qualified to do business in New Hampshire. That register is searchable online for free through New Hampshire QuickStart Business Search. Because state law makes these filings public records, anyone - not just the business owner - can look up an entity, view its status, and see who its registered agent is. For the national picture of how these registries work, see our guide to business entity searches and the glossary.

People use the New Hampshire search for four main jobs: checking whether a proposed name is available before forming an LLC, verifying that a company they are dealing with is really registered and active, finding an entity's registered agent so legal documents can be served, and confirming good standing before a loan, sale, or contract. The record you see is drawn straight from the entity's filed documents, so it reflects what the state has on file rather than marketing material.

How to Run a New Hampshire Entity Search

Open New Hampshire QuickStart Business Search and choose how you want to search. The system supports three approaches, and it helps to start broad and then narrow:

• Search by entity name. Enter the full or partial name. Most name searches match on the beginning of the name or on a keyword, so try shortened forms if an exact match does not appear.
• Search by entity ID number. If you already have the state-assigned ID, this returns the exact record with no ambiguity.
• Search by registered agent. You can list the entities tied to a particular registered agent, which is useful for legal service and due diligence.

Select a result to open the detailed record. Because names are matched loosely, run several variations of a proposed name - dropping punctuation, entity designators such as "LLC," and common words - so you catch anything the state might consider too similar. The public search is a reliable first check, but the New Hampshire Secretary of State makes the final call on whether a name is distinguishable when you file.

What Information the Search Returns

The detailed record for an entity generally shows its exact legal name, the state-assigned ID number, the entity type (LLC, corporation, nonprofit, limited partnership, or foreign entity), and its current status - for example active, delinquent, dissolved, or withdrawn. It also lists the formation or registration date and the entity's home jurisdiction if it was formed in another state.

Just as important, the record shows the registered agent and registered office address, and often the principal office address and the entity's filing history. That history is where you can see the original Articles of Organization or Certificate of Formation, later amendments, and annual report filings. None of this includes an EIN - the IRS does not publish EINs - or private financial data; the register is limited to what an entity is legally required to file with the state.

Checking Name Availability Before You File

The most common reason to search is to confirm a business name is open. New Hampshire law requires a new entity's name to be distinguishable from names already on the register, and the New Hampshire Secretary of State will reject a filing whose name is too close to an existing one. Running the name through the search first saves a rejected filing and lost fees. Confirm the name also does not conflict with a federal trademark, which is a separate issue from state name availability.

If your exact name and close variants return no active or reserved matches, the name is probably available. When you are not ready to file immediately, most states let you reserve an available name for a set period for a small fee through the same online system; check the New Hampshire Secretary of State fee schedule for the current reservation cost. A clear search result is a strong signal, but it is not a guarantee - only the filing office's acceptance of your formation document secures the name. See how to form an LLC in New Hampshire for the full filing steps.

Verifying Status and Good Standing

The search also tells you whether an entity is in good standing - meaning it has kept up with required filings such as its annual or periodic report and has maintained a registered agent. An "active" status with no delinquency notation generally indicates good standing. Lenders, buyers, and partners often require proof of good standing before closing a deal, and an entity may need it to register as a foreign LLC in another state.

For formal proof, you can order a Certificate of Good Standing (sometimes called a Certificate of Existence) from the New Hampshire Secretary of State for a fee; the free online status is fine for a quick check but is not the official certificate. If an entity has fallen out of good standing, it typically must file its overdue reports and pay any penalties to be reinstated. Letting compliance lapse can lead to administrative dissolution, which is why keeping your annual report current matters - see how to dissolve an LLC for what happens when an entity is closed involuntarily.

Common Mistakes and How to Read a Record

A few errors trip up people using the New Hampshire search. The first is treating a clear name search as a legal clearance: the register only covers entities on file with the New Hampshire Secretary of State, so a name can be free here yet still collide with a federal trademark or a DBA registered at the county level. The second is misreading status - an entity marked delinquent, revoked, or administratively dissolved is not a company you should assume is in good standing, even if a website still shows it as open for business.

When you open a record, read past the name to the status line, the registered agent, and the filing history. Cross-check the entity's stated address and agent against what the company tells you, and note the formation date to gauge how long it has operated. For a transaction of any size, pair the free lookup with an official Certificate of Good Standing and, if the entity is taxed as an S-corporation or partnership, confirm its EIN and tax status directly with the business. Careful reading turns a quick search into real due diligence.

Taxes, Licenses, and Other New Hampshire Searches

The New Hampshire Secretary of State search covers entity registration, not tax accounts or operating licenses, which live with other agencies. The New Hampshire Department of Revenue Administration handles state tax registration - income, sales and use, and withholding - and issues the permits a business needs to collect tax. Many cities, counties, and licensed professions maintain their own registries and verification tools, so a full background check on a business may mean consulting several sources. See New Hampshire business licenses and New Hampshire LLC tax filing for those steps.

A federal EIN is issued by the IRS and is not searchable to the public, but you will need one to open a bank account, hire employees, or elect S-corporation status. If you are researching a company for a transaction, combine the entity search with the entity's filed reports and, where relevant, professional-license verification to build a complete picture.

Frequently Asked Questions

How do I search for a business in New Hampshire?

Use the New Hampshire Secretary of State's free online business entity search. You can search by entity name, entity ID number, or registered agent name, then open a result to see the entity's status, type, formation date, and registered agent.

Is the New Hampshire business entity search free?

Yes. The New Hampshire Secretary of State's online entity search is free to use for basic lookups. Ordering an official Certificate of Good Standing or certified copies of filings carries a separate state fee.

What information does the New Hampshire search show?

It shows the entity's legal name, ID number, type, current status, formation or registration date, home state for foreign entities, and the registered agent and office address, plus the entity's filing history.

Can I check business name availability with the New Hampshire search?

Yes. Search your proposed name and close variants. New Hampshire requires a new name to be distinguishable from existing entities, so if no active or reserved match appears the name is likely available to file.

How do I get a New Hampshire Certificate of Good Standing?

Request one from the New Hampshire Secretary of State, usually through the same online portal, for a fee. It formally confirms the entity is active and current on required filings, which lenders and other states often require.

Related

• Business entity search (cluster hub)
• How to form an LLC in New Hampshire
• New Hampshire registered agent requirements
• New Hampshire Articles of Organization
• New Hampshire annual report
• How to get an EIN
• New Hampshire business licenses

Sources

1. New Hampshire Secretary of State - New Hampshire QuickStart Business Search.
2. New Hampshire Secretary of State - Business services and filings.
3. New Hampshire Revised Statutes Chapter 304-C - Limited Liability Companies (LLC formation and names).
4. New Hampshire Secretary of State - Starting a business.
5. New Hampshire Department of Revenue Administration - Business Profits Tax (BPT).
6. New Hampshire Department of Revenue Administration - business tax registration.
7. IRS - Limited Liability Company (LLC) (default federal tax classification).
8. IRS - Get an Employer Identification Number (EIN) (free; one per responsible party per day).
9. Legal Information Institute - Limited liability company (LLC).
10. Legal Information Institute - Registered agent.
11. U.S. Small Business Administration - Register your business.
12. IRS - State Government Websites (state tax and business links).

LegalGlass provides general information for educational purposes and is not a law firm or a substitute for advice from a licensed attorney or tax professional. Laws, fees, and thresholds change; verify current requirements with the New Hampshire Secretary of State and New Hampshire Department of Revenue Administration before acting.