answer pay taxes The income amount refers to the balance of all taxable income obtained by the taxpayer in a certain period less various expenses allowed to be deducted in accordance with the law during the tax period, which is the calculation of enterprise income tax according to the tax law Tax amount Tax basis of. The term "taxable income" as mentioned in the draft tax law refers to the total income of an enterprise in each tax year, the balance after deducting non taxable income, tax exempt income, various deductions and losses allowed to be made up in previous years, which is the taxable income and is used as the basis for calculation enterprise Basis of income tax amount.