The Internal Revenue Service issues employer federal identification numbers and administers federal payroll and income taxes, including social security, Medicare, federal unemployment insurance and federal income tax withholding.
There are several agencies that administer a variety of taxes for businesses in the State of California. This links to a list of agencies that can assist you in determining your tax obligations and provide you with information about tax reporting and taxpayer rights.
This search provides access to domestic stock, domestic nonprofit and qualified foreign corporations, limited liability company and limited partnership information of record with the California Secretary of State
All active Domestic Corporation Annual Reports and Franchise Taxes are due annually on or before March 1st. All Domestic and Foreign Limited Liabiility Company, Limited Partnership and General Partnership Annual Taxes are due on or before June 1st.
To lookup information on a Delaware entity follow this link. Note: the search results will return both active and inactive entities from their database.