If you were given the authority to propose a simple tax system that continues to raise capital to cover government costs, what would be your suggestions for appropriate systems and tax methods?

Your system can be directed toward a variety of taxpayers such as small business owners, investors, or employees, with various incomes, expenses, and family situations. Your suggestions should not parallel any governmental tax system that may currently exist. This discussion expects that you have no prior tax background. There is no right or wrong answer; I just want to hear your thoughts and possibly some creative ideas.