Combined Contract Schedules for Construction and Professional Services Contracts. To use the latest web form version please click on this link.Apply for a New Business Tax Certificate online or at the Business Tax Office. Refundable business registration fee plus special fees. Free fillable forms: City of Oakland. Non-Federal Agency (CA) Sign up. All Purchasing forms can be emailed. If sent to you from a specific person; please email the form directly back to that person for efficiency. Our free, downloadable ecommerce terms and conditions template is fully customizable, including the title, and applies to all of the following online stores. A copy of Contractor's City of Oakland Business Tax License which must be kept current for the duration of the Agreement and shall be.