How to Do a Delaware 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 Delaware, your LLC name has to clear the Division of Corporations name database. The free search tool lives at icis.corp.delaware.gov/ecorp/. A name only locks in once your formation document is accepted, and standard processing can take 2 to 3 weeks unless you pay for expedited review. Pick a name another entity already holds, and your filing gets rejected. Here’s how to check properly the first time.

How to Search Delaware LLC Names: Step-by-Step

1. Open the Delaware Division of Corporations search tool

Go to icis.corp.delaware.gov/ecorp/ and click “Entity Search.” This is the free public lookup. You don’t need an account to use it. The same portal handles entity searches for corporations, LLCs, LPs, and statutory trusts, so anything Delaware has on file shows up here.

Don’t rely on Google or third-party business name lookups. Only the Division’s own database is authoritative for distinguishability decisions.

2. Enter your proposed name without the designator

Type the core name only. Skip “LLC,” “L.L.C.,” or “Limited Liability Company” in the search box. Delaware’s distinguishability test ignores entity designators when comparing names, so searching “Blue Harbor” gives you a wider net than searching “Blue Harbor LLC.”

Use the “Starting With” option for a broad sweep. Then run a “Contains” search to catch names where your phrase appears mid-string.

3. Read the results carefully

The search returns entity name, file number, entity kind, residency, and status. Pay attention to status: an entity marked “Cancelled,” “Forfeited,” or “Voided” still holds the name unless it has been formally released. Don’t assume a dissolved company frees up its name.

Click any entity name for details. You’ll see the formation date, registered agent, and current standing.

4. Test variations and near-matches

Delaware looks at the whole name, not just word order. “Atlantic Capital Partners” and “Capital Partners Atlantic” are likely treated as distinguishable, but “Atlantic Capital Partners” vs. “Atlantic Capital Partner” probably isn’t. Search singulars, plurals, and common abbreviations. Replace “and” with “&” and run the check again.

5. Check restricted words before you commit

If your name includes “bank,” “trust,” “insurance,” or anything finance or healthcare adjacent, you’ll need approval from the relevant Delaware regulator before formation. The Division won’t approve these names without supporting documentation.

6. Reserve the name (optional) or file the Certificate of Formation

If you’re not ready to file but want to lock the name, submit a Name Reservation through the same eCorp portal for $75. It holds for 120 days. If you’re ready to form now, skip the reservation and go straight to filing the Certificate of Formation, which secures the name on acceptance.

Delaware LLC Naming Rules

Designator requirement

Per 6 Del. C. § 18-102, every Delaware LLC name must contain the words “Limited Liability Company” or one of the abbreviations “L.L.C.” or “LLC.” You can use any of the three. “Ltd. Liability Co.” isn’t on the approved list.

Distinguishability standard

Your name has to be distinguishable upon the records from any other entity registered in Delaware: corporations, LLCs, LPs, statutory trusts, registered series, and reserved names. Differences that don’t count as distinguishable include:

• Adding or removing the entity designator (LLC vs. Inc.)
• Changing punctuation or spacing
• Singular vs. plural of the same word
• “The” at the start of the name
• Substituting “and” for “&”

Differences that typically do count: a different distinctive word, a meaningfully different word order, or a clearly different industry descriptor.

Prohibited words

Delaware doesn’t publish a long list of outright bans, but your name can’t imply you’re a government agency or use language that misrepresents the entity’s purpose. Profanity and obviously deceptive names get rejected.

Restricted words requiring approval

Certain words trigger extra review or require pre-approval from a regulator:

• Bank, banking, trust: Requires approval from the Delaware Office of the State Bank Commissioner.
• Insurance, assurance, indemnity: Requires Delaware Department of Insurance clearance.
• University, college, academy: Higher-education terms can draw scrutiny from the Department of Education.
• Olympic, Olympiad: Federally protected; can’t be used.

If you want any of these in your name, contact the regulator before you file. The Division of Corporations won’t process the formation otherwise.

What If Your Delaware LLC Name Is Already Taken?

Try targeted variations

If “Harbor Capital LLC” is gone, you can’t fix it by switching to “Harbor Capital L.L.C.” Delaware will treat that as the same name. Real options:

• Add a meaningful descriptor: “Harbor Capital Advisors LLC,” “Harbor Capital Group LLC.”
• Add a geographic qualifier: “Wilmington Harbor Capital LLC,” “Mid-Atlantic Harbor Capital LLC.”
• Rework the core: “Blue Harbor Capital LLC,” “Harbor Point Capital LLC.”

Run each variation back through the eCorp search before settling.

Reserve the name once you find a winner

Delaware lets you reserve an available name for 120 days for a $75 fee. File the reservation online through eCorp. If you need more time, you can renew. Reservation makes sense if you’re still drafting your operating agreement, lining up an EIN, or waiting on a regulator’s approval letter for a restricted word.

Operate under a trade name (DBA)

Delaware doesn’t have a state-level DBA filing. Trade names are registered at the county level with the Prothonotary’s office in each county where you do business. So your LLC’s legal name might be “DE Acquisitions 2024 LLC,” but you can operate publicly as “Harbor Capital” if you register that trade name in New Castle, Kent, or Sussex County.

Trademark is separate from name availability

Clearing Delaware’s database doesn’t mean you own the name. Someone else may hold a federal trademark on it. Run a search at uspto.gov/trademarks/search before printing business cards. State-level distinguishability and federal trademark rights are two different legal questions.

After You Confirm Your Delaware LLC Name

Once your name clears, file the Certificate of Formation with the Division of Corporations ($110 base filing fee), appoint a Delaware registered agent, and apply for an EIN with the IRS. Delaware also requires an Annual Franchise Tax of $300 due each June 1.

For the full sequence, see our Delaware LLC guide and the step-by-step Delaware formation walkthrough. You’ll need a Delaware registered agent before filing: read our Delaware registered agent guide. After formation, draft your Delaware LLC operating agreement.

Frequently Asked Questions

How do I know if a Delaware LLC name is actually available?

Run the proposed name through the Division of Corporations entity search at icis.corp.delaware.gov/ecorp/. If no active or inactive entity uses a substantially identical name, it’s likely available. The Division makes the final call when you submit your Certificate of Formation. A name that looks clear in the public search can still be rejected if a Division reviewer decides it’s not distinguishable.

How long does a Delaware name reservation last?

120 days. The fee is $75, filed through the eCorp portal. You can renew the reservation for additional 120-day periods if you need more time. Most filers skip reservation and just form the LLC, since formation locks in the name immediately on acceptance.

Can my LLC’s legal name be different from the brand I use publicly?

Yes. Your Certificate of Formation establishes the legal name. To operate under a different brand, register a trade name with the Prothonotary’s office in each Delaware county where you conduct business. The trade name has to be filed locally, not with the Division of Corporations.

Do I need to match my LLC name to my domain name?

No legal requirement, but it makes branding cleaner. Check domain availability before you finalize the LLC name. Plenty of Delaware LLCs file under one legal name, register a separate trade name, and run a website on yet another domain. The three don’t have to match.

What makes two names “distinguishable” in Delaware?

A different distinctive word, a meaningful word reordering, or a clear difference in the dominant phrase. Adding “LLC,” changing punctuation, swapping singular for plural, or adding “The” at the front does not make names distinguishable. Reviewers compare the full name’s sound and impression, not just spelling.

Can I reuse a name from a dissolved Delaware LLC?

Sometimes, but not automatically. If the prior entity is in “Cancelled,” “Forfeited,” or “Voided” status, the name often remains tied to that record. The Division may still reject your filing as not distinguishable. Call or email the Division of Corporations before you file to confirm whether the name has been released.

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.