If your business is a sole proprietorship or partnership, you’ll file a T1 business income tax form—the same income tax return you use to file your personal income taxes. If your business is a corporation, you have to file a T2, or corporate income tax return.  Corporation, being a Limited Liability, have a much more Comprehensive Return, including Income Statement, Balance Sheet, and Statement of Retained Earnings, among other Schedules and Reporting Requirements.