Taxable income refers to the income earned by an individual or a company that is subject to taxation by the government. There are several other words that can be used interchangeably to mean taxable income. Some of these synonyms include total income, imposable income, gross income, assessable income, and taxable earnings. These terms all refer to the amount of income that is subject to taxation at the applicable tax rate. Therefore, whether you are filling out your tax returns or looking to discuss taxable income, be sure to use these alternative synonyms to aid in your conversations.