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Delaware LLC · Step 1 of 8 · Verified June 2026

Delaware LLC Name Search — Step 1 of 8

Your name is the first thing the state checks, and a name conflict is the most common reason a Delaware filing gets rejected. The rules are simple: include a proper LLC designator and be distinguishable from every other entity on file. Here's how to get it right the first time — with a checker to flag problems before you file.

Ahmad Adil Written & verified by Ahmad Adil, LLC School·Updated June 2026
Quick Answer

A Delaware LLC name must contain "Limited Liability Company," "LLC," or "L.L.C." and be distinguishable from every existing entity registered with the Division of Corporations. Check availability free on the Division of Corporations entity search. You can optionally reserve a name for 120 days for $75, but most people just file.

Step 1 — Fast Facts
Required designator
LLC / L.L.C.
Name search
Free
Must be
Distinguishable
Reservation
$75 / 120 days
Approved when
Certificate files
Search at
corp.delaware.gov
Next step
Step 2 →

Delaware LLC Naming Rules

Delaware's naming rules (6 Del. C. § 18-102) are among the most straightforward in the country. Get these right and your name should sail through:

  • Include a designator — the name must contain "Limited Liability Company," or an abbreviation such as LLC or L.L.C.
  • Be distinguishable — it must differ from every existing entity already on file with the Division of Corporations.
  • Use permitted characters — letters, numbers, and common punctuation are fine.
  • Don't use corporate designators — words like "Corporation," "Incorporated," "Inc.," or "Corp." are for corporations, not LLCs.
  • Restricted words need approval — terms implying a bank, trust, or university may require additional consent or licensing.

Delaware Name Compliance Checker

Type your proposed name to instantly flag the most common problems before you run the official search:

Name Compliance Checker
Designator + restricted-word check

This tool checks formatting only. Final availability is confirmed by the Delaware Division of Corporations when you file or search their live database.

Always run the official search before filingThe Division of Corporations' entity search is the only authoritative source for availability. If your name conflicts with an existing entity, your Certificate of Formation will be rejected — and if you paid for expedited service, that fee may be wasted. Check first, file second.

Reserving a Name (Optional)

If you've settled on a name but aren't ready to file — say you're still lining up partners or funding — you can reserve it for 120 days for $75 with the Division of Corporations. Most founders skip this and simply file their Certificate of Formation, since the name is locked in the moment the LLC is approved. Reservation mainly helps when there's a gap between choosing a name and forming.

State approval isn't trademark protectionClearing the Delaware database means no other Delaware entity has your exact name — it does not mean you own the name nationally. Before you invest in branding, search the USPTO trademark database and check domain and social handles so you don't build on a name someone else already owns.

Ahmad Adil's Take: Delaware names are easy — the only thing that trips people up is assuming a name is free just because it "sounds available." Run the official search, confirm an exact-match isn't taken, and add your LLC designator. I'd skip the $75 reservation unless you genuinely can't file for a few weeks; the name is yours the instant your Certificate of Formation is approved. Spend that energy instead on a quick trademark and domain check — that's where real naming conflicts actually bite.
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Frequently Asked Questions

Delaware LLC Name — FAQ

What do I have to include in a Delaware LLC name?
The name must contain "Limited Liability Company," "LLC," or "L.L.C." and be distinguishable from every other entity on file with the Delaware Division of Corporations. Corporate designators like "Inc." or "Corp." are not allowed for an LLC.
How do I check if a Delaware LLC name is available?
Use the free entity name search on the Delaware Division of Corporations website. Enter your proposed name to see whether an identical or non-distinguishable name already exists. This is the authoritative check before you file.
Does "distinguishable" mean my name must be unique?
It must be distinguishable on the record from existing names — a small wording difference can be enough, but adding only a designator or minor punctuation may not be. When in doubt, the Division of Corporations makes the final call, so search first.
Can I reserve a Delaware LLC name?
Yes — you can reserve a name for 120 days for $75. Most people skip it and file directly, since the name is secured the moment the Certificate of Formation is approved. Reservation is useful mainly when you need to hold a name before filing.
Do I need a separate trademark?
Possibly. A Delaware filing only clears the name within Delaware's business registry. For nationwide brand protection, search and register a federal trademark with the USPTO and secure your domain and social handles before investing in branding.
Can I use a DBA or trade name in Delaware?
Yes. You can operate under a "doing business as" name. As of June 2, 2025, Delaware trade-name registration is handled through the Division of Revenue's OneStop system. A DBA lets your LLC use a different public-facing name without forming a new entity.
What happens if my name is rejected?
If your name conflicts with an existing entity, the Division of Corporations will reject the filing and you'll need to refile with a different name — losing time and possibly an expedited fee. Running the official search first is the easiest way to avoid this.
Ahmad Adil, founder of LLC School
About the Author
Ahmad Adil

Ahmad Adil is the founder and CEO of LLC School. The naming requirements here — the LLC/L.L.C. designator rule, the "distinguishable on the record" standard, the $75 / 120-day reservation, and the 2025 move of DBA registration to the Division of Revenue — reflect Delaware's entity statutes (6 Del. C. § 18-102) and Division of Corporations practice. This is educational information, not legal advice.

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