How to Do a New Hampshire LLC Name Search (2026 Guide)

Last Updated April 30, 2026 by the LLCForge Editorial Team. Verified against current state filing data and official Secretary of State sources.

Before you file a Certificate of Formation in New Hampshire, your LLC name has to clear the state’s database. The search lives inside NH QuickStart at quickstart.sos.nh.gov, and a name isn’t actually yours until your formation paperwork is approved (usually 1-3 business days for online filings). Pick a name that’s already in use, and the Corporation Division kicks back your filing. That’s a wasted $100 filing fee and a week of lost time.

How to Search New Hampshire LLC Names: Step-by-Step

Step 1: Open the NH QuickStart business lookup

Go to quickstart.sos.nh.gov. On the homepage, click “Business Search” in the navigation. You don’t need an account to search. The portal pulls from the same database the Corporation Division uses to approve filings, so what you see is what they see.

Step 2: Pick the right search type

QuickStart gives you two main options: “Business Name” and “Business ID.” Stick with Business Name. Then choose between “Starts With” and “Contains.” Run both. “Starts With” catches the obvious clones. “Contains” catches the sneaky ones, like an existing “Granite State Roofing LLC” when you’re trying to register “Granite State Construction LLC.”

Step 3: Search the core part of your name

Type the distinctive part only. Drop “LLC,” “Inc,” “Company,” and any articles like “The.” If your name is “Mount Monadnock Coffee Roasters LLC,” search “Monadnock Coffee” or just “Monadnock.” This pulls up everything in that family, including dissolved entities that might still block your filing.

Step 4: Check entity status, not just the name

Click into each result. Look at the “Status” field. Active, In Good Standing, and Not in Good Standing all block your name. Dissolved or Voluntarily Dissolved entities sometimes free up the name, but New Hampshire holds names for a period after dissolution. If you see a dissolved match within the last few years, call the Corporation Division at (603) 271-3246 before you file.

Step 5: Run variations and homophones

NH’s distinguishability standard isn’t just spelling. Punctuation, capitalization, and the LLC designator itself don’t make a name distinguishable. “Smith Construction LLC” and “Smith Construction L.L.C.” are the same name to the state. Test plurals (“Roofer” vs “Roofers”), spacing (“NorthEast” vs “North East”), and substitutions (“and” vs “&”).

Step 6: Check the federal trademark database

State availability and trademark availability are different problems. Search the USPTO’s TESS database at tmsearch.uspto.gov for your name. A registered trademark in your industry can force you to rebrand later, even if New Hampshire approves your filing.

New Hampshire LLC Naming Rules

Required designator

Under RSA 304-C, every New Hampshire LLC name must end with one of these: Limited Liability Company, L.L.C., L. L. C., or LLC. The state accepts all four formats. Pick whichever you want printed on contracts and bank documents. You can mix case (LLC, llc, L.L.C.) but the designator has to be there.

Distinguishability requirement

Your name must be distinguishable on the records of the Secretary of State from every other registered entity, every reserved name, and every registered trade name. The following do NOT make a name distinguishable:

• The entity designator (LLC vs Inc vs Corp)
• Punctuation, spacing, or capitalization changes
• Articles like “the,” “a,” or “an”
• Adding or removing “and,” “&,” or “+”
• Changing singular to plural

Prohibited words

You can’t use words that imply a purpose your LLC isn’t authorized to carry out. Names suggesting government affiliation (“FBI,” “Treasury,” “State Department”) get rejected. Names that imply you’re a different entity type, like using “Corporation” or “Incorporated” in an LLC name, also get bounced.

Restricted words requiring approval

Some words trigger extra review or require licensing proof:

• Bank, banking, trust, credit union: Need approval from the NH Banking Department
• Insurance, insurer, assurance: Need approval from the NH Insurance Department
• Engineer, engineering, architect, surveyor: Require licensed professionals as members or managers
• Doctor, attorney, CPA, dentist: Require professional licensing and may push you toward a Professional LLC (PLLC)
• University, college, academy: May need Department of Education sign-off

What If Your New Hampshire LLC Name Is Already Taken?

It happens. New Hampshire has over 100,000 active business entities, and the common names are gone. Here’s what works.

Variation strategies

• Add a geographic modifier: “Seacoast,” “Lakes Region,” “Monadnock,” “White Mountain,” or your town name
• Add a descriptor: “Group,” “Partners,” “Holdings,” “Studio,” “Workshop,” “Collective”
• Use a different industry term: Swap “Construction” for “Builders,” “Consulting” for “Advisors”
• Try a coined word: Made-up names clear easier and trademark easier

Reserve the name while you prepare

If you’ve found a clear name but you’re not ready to file, submit an Application for Reservation of Name with $15. That holds the name for 120 days. The reservation is non-renewable in NH, so don’t reserve too early. File the form by mail to the Corporation Division or through QuickStart.

Use a DBA (trade name)

If your legal LLC name is taken in a less appealing form, you can register a Trade Name (NH’s version of a DBA) for $50. Your LLC stays “Doe Holdings LLC” on legal documents, but you operate as “Granite Coffee Co.” publicly. Trade names also have to clear distinguishability checks.

Check trademarks before you commit

Even after you clear the NH database, run the name through USPTO’s TESS and a basic Google search. A coffee shop in Oregon with a federal trademark on “Granite Coffee” can stop you from using it nationally, even if you only operate in Concord.

After You Confirm Your New Hampshire LLC Name

Once your name clears, file the Certificate of Formation with the NH Secretary of State. The filing fee is $100. Online filings through QuickStart usually process in 1-3 business days. From there you’ll need a registered agent with a physical NH address, an EIN from the IRS, and an operating agreement.

Walk through the full process here: how to start an LLC in New Hampshire. For the broader rules, fees, and annual report requirements, see the New Hampshire LLC guide. Sort out your registered agent with the NH registered agent guide, and draft your internal rules using the NH operating agreement guide.

Frequently Asked Questions

How long does a New Hampshire LLC name reservation last?

120 days from the date the Secretary of State accepts your reservation. The reservation is non-renewable, so if you don’t form the LLC in that window, you have to reapply (and the name might not be available anymore).

Does my LLC name have to match my domain name or DBA?

No. Your legal LLC name is what’s on the Certificate of Formation. Your domain, your trade name, your social handles, and your storefront sign can all be different. Many NH LLCs operate under a registered Trade Name that’s shorter or more brandable than the legal entity name.

What makes two names “distinguishable” in New Hampshire?

Real differences. A different word, a different made-up word, or a meaningfully different phrase. Adding “The,” changing “and” to “&,” swapping LLC for Inc, or pluralizing a word does NOT count. The Corporation Division applies this strictly.

Can I use a name that belongs to a dissolved New Hampshire LLC?

Sometimes. New Hampshire holds dissolved entity names for a period after dissolution before releasing them. Recently dissolved names (within the last year or two) often still block new filings. Call the Corporation Division at (603) 271-3246 to confirm before you file.

Can I check name availability without paying anything?

Yes. The QuickStart business search is free. You only pay if you reserve the name ($15) or file the Certificate of Formation ($100). Search as many variations as you want before spending a dollar.

What happens if I file a Certificate of Formation with a name that’s already taken?

The Corporation Division rejects the filing and you lose the $100 fee (or have to refile, depending on processing). You’ll get a rejection notice explaining the conflict. This is why running the QuickStart search first matters: a 5-minute check saves a $100 mistake and a week of delay.

This content is for informational purposes only and does not constitute legal or tax advice. Always consult a qualified professional for guidance specific to your situation.