Use a California business purchase agreement to record the sale of a business. Download your free template today.Free Consultation - Call (408) 436-0789 - SAC Attorneys LLP helps companies with business matters in Corporate and Business law. View current agendas and minutes for all boards and commissions. In addition to drafting and review of purchase and sale agreements and bills of sale, other laws may come into play and determine the form of the transaction. Identify the parties involved in the transaction. 2. Apply for a New Business Tax Certificate online or at the Business Tax Office. Refundable business registration fee plus special fees.