Taxable revenue refers to the total income earned by a business, individual or entity that is subject to taxation. This includes all sources of income such as wages, salaries, interest, dividends and capital gains, which are used to calculate an individual's or company's overall tax liability. Taxable revenue is typically determined based on the applicable tax laws in a particular jurisdiction, and may be reduced through various deductions, credits, exemptions or other allowances provided by the government.