Jurisdictional Tax Parameters
Register a trade name (DBA) for your Delaware sole proprietorship.
Official State Document Mirror
Clicking download will instantly open the live application form hosted on the official government registry server.
Filing Authority Mapping
Follow these steps to register your trade name:
- Search the Delaware Trade Name database for availability.
- Complete the Registration of Trade Name form.
- Pay the $25 filing fee.
- Submit by mail or online.
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