The taxes that are paid on a personal income is quite different from the tax that is paid on the income of a firm or company. For a formal company, the owners must pay both taxes on their income and taxes on their salary or dividend from the firm. The amount of tax an individual will pay will vary based on the level of income they have and it can also vary based on the jurisdiction of the income. It is generally a product of the tax rate times the taxable income. It is important to note that the rate may increase as the taxable income increases as well. There are various amounts of credits that can be applied to reduce the tax liability. It is wise for the tax payer to get a professional to assist them with tax preparation or they should become knowledgeable in the various deductions that ca applies to them.