There are several types of assessments for income tax: self-assessment, where taxpayers pay taxes based on their own returns; regular assessment, where the tax authority informs taxpayers of taxes owed based on their returns; best judgement assessment, where the tax authority estimates taxes owed if a taxpayer's return is incomplete or inaccurate; income escaping assessment, where the tax authority assesses previously unreported income; and precautionary assessment, where the tax authority determines responsibility for tax when it is unclear who received the income.