Apply for a New Business Tax Certificate online or at the Business Tax Office. Refundable business registration fee plus special fees.The California Department of Insurance's (CDI) Certificate of Authority Application forms are now available in Adobe's Portable Document Format (PDF). Contact us for business insurance in Oakland, CA today! Free fillable forms: City of Oakland. Non-Federal Agency (CA) Sign up. Blank Application Forms. The below forms may be dropped at a secure drop box, at one of our offices, during regular business hours, am to pm. The form must be completely filled out. Have you sold or given away any asset(s) for less than their value in the last 2 years?