Filing Requirements and Related Questions. What is the tax rate for S corporations?Who needs a Business License? Anyone operating or doing business in the City of Oakland is required to file and pay an annual business tax. A key agenda item at an Annual Shareholder Meeting of a California Corporation or California SCorp is the review of financial statements. Filing requirements. Submit Form 2553 within two months and 15 days from your incorporation date to elect S corporation tax status, which enables pass-through taxation. It is a business entity separate from its members. Welcome to Spartanburg County School District Two website. Our core principle is Students First.