A tax bill is a document sent by the government to individuals or businesses that outlines how much money they owe in taxes. It includes information about what types of income are being taxed, any deductions taken, and the total amount owed based on current tax rates. Tax bills can be issued at different times throughout the year depending on the type of taxpayer or the method of payment used. Generally, individuals receive a tax bill once per year when filing their income tax return, while businesses may receive multiple tax bills throughout the year for various types of taxes such as payroll, sales, and property taxes.