Register a Business Name in New Castle County, DE
This page includes a paid link to a private filing service. ClerkSifter may earn a commission. The office information on this page is independent of it.
This service isn't handled by the Clerk of the Peace. Here's where to go instead.
6 Del. C. § 3101 requires the certificate to be filed with the Division of Revenue, and § 3103 sets the fee: the Division “shall collect from the person filing the certificate a fee of $25”. The Clerk of the Peace issues marriage licenses and has no role in business registration.
One Stop asks which of three applies to you — pick the wrong one and you land in the wrong workflow:
- Register a Trade Name (with existing business license) — you already hold a Delaware business license, or a trade-name-only license.
- Start a New Delaware Business — you are not yet registered with the Division of Revenue.
- Trade Name Only — you are not required to hold a Delaware license and need the trade name alone.
Delaware's Division of Revenue dropped the notarization requirement: "Notarization is no longer required as of February 2, 2026." Applications are now filed online.
Source: Delaware Division of Revenue, Trade Names FAQs ↗ — “Notarization is no longer required as of February 2, 2026. All applications are processed online.” (as of 26 September 2026)
⚠️ This office does not process DBA registration. Use the agency linked above. The office below is your county's Clerk of the Peace — useful for other services.
Filing a DBA somewhere else in Delaware? See the Delaware DBA guide for statewide requirements and fees.